EKG Final Quiz
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An electrocardiogram is a recording of the:
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Electrical activity of the heart
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Opening and closing of the valves of the heart
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Force of the blood against the walls of the blood vessels
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Contraction and relaxation of the ventricles
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About This Quiz
During the course of the year we have learnt a lot on the use and application of the EKG machine. With the finals just around the corner it is paramount to get some review questions to jog your memory. The quiz below is designed for just that. Give it a try and all the best!
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- 2.
The medical term for fainting is:
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Edema
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Syncope
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Headache
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Palpitations
Correct Answer
A. SyncopeExplanation
Syncope is the correct answer because it is the medical term used to describe fainting. Fainting, or syncope, is a temporary loss of consciousness caused by a decrease in blood flow to the brain. It can be caused by various factors such as low blood pressure, dehydration, or heart conditions. Edema refers to swelling caused by excess fluid, headache refers to a pain in the head, and palpitations refer to an irregular or rapid heartbeat.Rate this question:
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- 3.
The myocardium is the middle and contractile layer of the heart.
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True
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False
Correct Answer
A. TrueExplanation
The myocardium is indeed the middle and contractile layer of the heart. It is responsible for the pumping action of the heart, as it consists of specialized cardiac muscle cells that contract and relax to pump blood throughout the body. This layer is sandwiched between the outer epicardium and the inner endocardium, and its contraction is controlled by electrical signals from the heart's conduction system. Therefore, the statement is true.Rate this question:
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- 4.
The Er doctor requests a heart specialist to see Humpty Dumpty. The medical term for a physician who specializes in heart disease is called:
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Gastroenterologist
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OB
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Cardiologist
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Pulmonologist
Correct Answer
A. CardiologistExplanation
A cardiologist is a physician who specializes in the diagnosis, treatment, and prevention of heart diseases. In this scenario, the ER doctor specifically requests a heart specialist to see Humpty Dumpty, indicating that there is a concern related to his heart. Therefore, the correct answer is Cardiologist.Rate this question:
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- 5.
What is the measurement of the time presented by one small square on the EKG is:
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0.20 sec
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0.20 min
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0.04 sec
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4 seconds
Correct Answer
A. 0.04 secExplanation
The correct answer is 0.04 sec. This is the measurement of the time presented by one small square on the EKG. Each small square on the EKG graph represents 0.04 seconds of time. This measurement is important for accurately interpreting the electrical activity of the heart as recorded on the EKG.Rate this question:
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- 6.
The EKG strip must include all of the following except:
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Patient's name
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Patient's ID number
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Date of examination
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Health insurance information
Correct Answer
A. Health insurance informationExplanation
The EKG strip is a medical record that displays the electrical activity of the heart. It is used to diagnose various heart conditions. The strip includes important information such as the patient's name, ID number, and the date of the examination. However, it does not include health insurance information. This is because health insurance details are not relevant to the electrical activity of the heart and are not necessary for the interpretation of the EKG results.Rate this question:
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- 7.
What is the name of the smallest part of the lungs responsible for gas exchange?
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Villi
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Alveoli
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Intestine
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Pockets
Correct Answer
A. AlveoliExplanation
The correct answer is Alveoli. The alveoli are tiny air sacs located at the end of the bronchioles in the lungs. They are responsible for the exchange of oxygen and carbon dioxide between the lungs and the bloodstream. The thin walls of the alveoli allow for efficient diffusion of gases, ensuring that oxygen is taken in and carbon dioxide is expelled during respiration. Villi are finger-like projections found in the small intestine that aid in the absorption of nutrients. Intestine and Pockets are not directly related to gas exchange in the lungs.Rate this question:
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- 8.
The name of the wave that occasionally may be seen after T wave is:
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S wave
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Z wave
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F wave
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U wave
Correct Answer
A. U waveExplanation
The U wave is a small, rounded wave that can occasionally be seen after the T wave on an electrocardiogram (ECG). It represents the repolarization of the Purkinje fibers in the ventricles of the heart. The U wave is usually not very prominent and can sometimes be difficult to distinguish from noise or artifacts on the ECG. It is most commonly seen in individuals with electrolyte imbalances, certain medications, or underlying cardiac conditions.Rate this question:
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- 9.
Rapid, flutter waves that look like saw tooth appearance on the EKG tracing are called Atrial Flutter?
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True
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False
Correct Answer
A. TrueExplanation
Rapid, flutter waves that look like saw tooth appearance on the EKG tracing are indeed called Atrial Flutter. This abnormal heart rhythm originates in the atria, causing them to contract rapidly and irregularly. The resulting EKG pattern shows distinctive flutter waves, resembling the teeth of a saw. Therefore, the statement "True" is the correct answer.Rate this question:
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- 10.
The endocardium is the innermost layer of the heart.
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True
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False
Correct Answer
A. TrueExplanation
The endocardium is the innermost layer of the heart, consisting of a thin, smooth membrane that lines the chambers and valves. It is responsible for maintaining a smooth surface for blood flow and preventing clotting. The endocardium also plays a role in regulating the contraction and relaxation of the heart muscle. Therefore, the statement that the endocardium is the innermost layer of the heart is true.Rate this question:
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- 11.
The heart normally beats each minute approximatley:
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40-60 beats
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60-80 beats
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60-100 beats
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None of the above
Correct Answer
A. 60-100 beatsExplanation
The correct answer is 60-100 beats because this range represents the normal resting heart rate for adults. A heart rate below 60 beats per minute is considered bradycardia, while a heart rate above 100 beats per minute is considered tachycardia. Therefore, the range of 60-100 beats per minute is considered the normal and healthy heart rate for most individuals.Rate this question:
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- 12.
The medical term for fainting is:
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Syncope
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Anoxia
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Stasis
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Angina
Correct Answer
A. SyncopeExplanation
Syncope is the correct medical term for fainting. It refers to a temporary loss of consciousness and posture caused by a lack of blood flow to the brain. This can occur due to various reasons such as low blood pressure, dehydration, heart problems, or sudden emotional stress. Anoxia refers to a complete lack of oxygen supply to the body's tissues, stasis refers to a slowing or stopping of the normal flow of bodily fluids, and angina refers to chest pain caused by reduced blood flow to the heart.Rate this question:
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- 13.
Who named the EKG waves?
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Bethoven
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Einthoven
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Lincoln
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Mozart
Correct Answer
A. EinthovenExplanation
Einthoven is credited with naming the EKG waves after himself. The EKG (electrocardiogram) is a medical test that measures the electrical activity of the heart. Willem Einthoven, a Dutch physiologist, developed the first practical electrocardiograph and made significant contributions to the understanding of the heart's electrical activity. As a result of his work, the different waves observed in an EKG, such as the P wave, QRS complex, and T wave, were named after him.Rate this question:
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- 14.
Myocardial infarction means:
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Stroke
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Heart attack
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Fainting
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Head ache
Correct Answer
A. Heart attackExplanation
Myocardial infarction refers to a condition commonly known as a heart attack. It occurs when there is a blockage in one or more of the coronary arteries, which supply oxygen-rich blood to the heart muscle. This blockage prevents adequate blood flow to the heart, leading to damage or death of the heart muscle tissue. Symptoms of a heart attack may include chest pain, shortness of breath, nausea, and sweating. It is a serious medical emergency that requires immediate medical attention to minimize the damage to the heart and prevent complications.Rate this question:
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- 15.
What is the name for a rate of more than 100 bpm?
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Normal sinus rhythm
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Sinus bradycardia
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Sinus tachycardia
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A-Fibrillation
Correct Answer
A. Sinus tachycardiaExplanation
Sinus tachycardia is the correct answer because it refers to a heart rate that is faster than normal, specifically more than 100 beats per minute (bpm). Sinus bradycardia, on the other hand, refers to a heart rate that is slower than normal. A-Fibrillation is a different condition characterized by an irregular and often rapid heart rate. Normal sinus rhythm refers to a heart rate within the normal range of 60-100 bpm.Rate this question:
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- 16.
The first clear sound you hear gives the reading for the:
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Systolic pressure
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Diastolic pressure
Correct Answer
A. Systolic pressureExplanation
The first clear sound you hear corresponds to the systolic pressure. Systolic pressure is the maximum pressure exerted on the arteries when the heart contracts and pumps blood. The first sound heard is caused by the opening of the partially blocked arteries, indicating the point at which the pressure is high enough to overcome the blockage. This sound marks the beginning of the systolic phase of the cardiac cycle. Diastolic pressure, on the other hand, is the minimum pressure in the arteries when the heart is at rest and refilling with blood, and it is typically measured when the sound disappears.Rate this question:
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- 17.
Blood vessels that carry blood away from the heart are called:
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Ateries
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Veins
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Tributaries
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Canals
Correct Answer
A. AteriesExplanation
Arteries are blood vessels that carry oxygenated blood away from the heart to various parts of the body. They have thick, elastic walls that help maintain blood pressure and regulate blood flow. Veins, on the other hand, carry deoxygenated blood back to the heart. Tributaries and canals are not accurate terms for blood vessels.Rate this question:
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- 18.
Which of the following would be a reason to request a stress test?
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CHF
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Headache
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Cancer
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Chest pain (angina pectoris)
Correct Answer
A. Chest pain (angina pectoris)Explanation
A stress test is commonly requested when a patient experiences chest pain, also known as angina pectoris. Angina pectoris is a symptom of coronary artery disease, which occurs when the heart muscle does not receive enough blood flow. The stress test helps to evaluate the heart's performance during physical activity and can provide valuable information about the presence and severity of coronary artery disease. It helps the healthcare provider assess the patient's risk of a heart attack and determine the most appropriate treatment plan.Rate this question:
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- 19.
The number of R waves in a six-second strip is 9. The heart rate is:
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72 per minute
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45 per minute
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90 per minute
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54 per minute
Correct Answer
A. 90 per minuteExplanation
The number of R waves in a six-second strip is 9. Since each R wave represents one heartbeat, we can calculate the heart rate by multiplying the number of R waves by 10 (to account for the fact that there are 10 six-second intervals in a minute). Therefore, 9 R waves in 6 seconds would correspond to 90 R waves per minute, indicating a heart rate of 90 beats per minute.Rate this question:
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- 20.
What is used to check BP?
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Otoscope
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EEG
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PPE
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Sphygmomanometer
Correct Answer
A. SphygmomanometerExplanation
A sphygmomanometer is used to check blood pressure (BP). It is a medical device that consists of an inflatable cuff, a measuring unit, and a pressure gauge. The cuff is wrapped around the upper arm, and the pressure in the cuff is gradually released while listening to the sounds of blood flow using a stethoscope or electronic sensors. This allows healthcare professionals to measure systolic and diastolic blood pressure, providing important information about a person's cardiovascular health. The other options listed, otoscope, EEG, and PPE, are not used for checking blood pressure.Rate this question:
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- 21.
The female patient states "it's against my religion to get underessed in front of a male technician. "What would you do in this situation?
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Tell your supervisor
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Tell the patient to get over it
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Get a female technician
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Tell the patient to leave
Correct Answer
A. Get a female technicianExplanation
In this situation, the most appropriate course of action would be to get a female technician. Respecting the patient's religious beliefs and cultural preferences is important in providing quality healthcare. By accommodating the patient's request for a female technician, we can ensure that the patient feels comfortable and respected during the procedure. This demonstrates a patient-centered approach and promotes a positive doctor-patient relationship.Rate this question:
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- 22.
Which of the following is the concept of HIPAA?
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Billing
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Coding
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Malpractice insurance
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Privacy
Correct Answer
A. PrivacyExplanation
HIPAA stands for the Health Insurance Portability and Accountability Act. It is a concept that primarily focuses on ensuring the privacy and security of individuals' health information. HIPAA sets standards for the protection of sensitive patient data and regulates how healthcare providers, insurance companies, and other entities handle and disclose this information. It aims to safeguard the confidentiality of medical records and prevent unauthorized access or disclosure of personal health information.Rate this question:
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- 23.
Which of the following electrical events will result in contraction?
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Polarization
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Repolarization
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Depolarization
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Relaxationm
Correct Answer
A. DepolarizationExplanation
Depolarization is the electrical event that triggers muscle contraction. During depolarization, the electrical charge inside the muscle cell becomes more positive, causing the muscle fibers to contract. This occurs when the cell membrane's voltage-gated ion channels open, allowing an influx of positively charged ions, such as sodium, into the cell. This change in electrical charge initiates the release of calcium ions from the sarcoplasmic reticulum, which then leads to muscle contraction. Therefore, depolarization is the correct answer as it directly results in the contraction of muscles.Rate this question:
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- 24.
Rapid random contractions of the atria is called Atrial Fibrillation:
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True
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False
Correct Answer
A. TrueExplanation
Atrial fibrillation is a condition characterized by rapid and irregular contractions of the atria, which are the upper chambers of the heart. This causes an abnormal heartbeat and can lead to various symptoms such as palpitations, shortness of breath, and fatigue. It is a common cardiac arrhythmia and can increase the risk of stroke and other complications. Therefore, the statement "Rapid random contractions of the atria is called Atrial Fibrillation" is true.Rate this question:
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- 25.
The sources of artifacts are:
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AC interference
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Patient movement
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Loose leads or electrodes
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All of the above
Correct Answer
A. All of the aboveExplanation
The correct answer is "All of the above" because all three options mentioned - AC interference, patient movement, and loose leads or electrodes - can contribute to the occurrence of artifacts. AC interference refers to electrical noise from external sources that can interfere with the accurate recording of physiological signals. Patient movement can cause artifacts by introducing motion-related distortions in the recorded signals. Loose leads or electrodes can result in poor signal quality and introduce noise or distortions. Therefore, all of these factors can contribute to the presence of artifacts in the recorded data.Rate this question:
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- 26.
The Epicardium is the outermost layer of the heart.
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True
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False
Correct Answer
A. TrueExplanation
The epicardium is the outermost layer of the heart. It is a protective layer that covers the heart and is composed of connective tissue and a layer of epithelial cells. It helps to prevent friction between the heart and surrounding structures.Rate this question:
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- 27.
_____is the ability of cardiac cells to spontaneously initiate an electrical impulse without being stimulated from another source (such as a nerve).
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Excitability
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Conductivity
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Automaticity
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Contractility
Correct Answer
A. AutomaticityExplanation
Automaticity is the ability of cardiac cells to spontaneously initiate an electrical impulse without being stimulated from another source (such as a nerve). This means that the cells have the inherent ability to generate their own electrical activity, allowing the heart to beat independently without external input. Automaticity is an important characteristic of cardiac cells as it ensures the regular and coordinated contraction of the heart, maintaining its pumping function.Rate this question:
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- 28.
The myocardium's own blood supply is provided by:
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The splenic artery
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The hepatic artery
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The coronary artery
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The heart does not have its own blood supply
Correct Answer
A. The coronary arteryExplanation
The myocardium, which is the muscular tissue of the heart, receives its own blood supply from the coronary artery. This artery branches off from the aorta and provides oxygenated blood to the heart muscle. Without this dedicated blood supply, the myocardium would not receive enough oxygen and nutrients to function properly. The splenic artery supplies blood to the spleen, the hepatic artery supplies blood to the liver, and the heart does indeed have its own blood supply through the coronary artery.Rate this question:
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- 29.
AVR, aVL, and aVF are known as the:
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Standard leads
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Chest leads
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Augmented leads
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Bipolar leads
Correct Answer
A. Augmented leadsExplanation
aVR, aVL, and aVF are known as augmented leads because they are derived from the standard leads and provide additional information about the electrical activity of the heart from different angles or perspectives. These leads are created by combining different combinations of the standard leads to help detect abnormalities or specific areas of the heart that may be affected. Augmented leads are commonly used in electrocardiography to provide a more comprehensive assessment of the heart's electrical activity.Rate this question:
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- 30.
How many electrodes are placed on the patient with Holter?
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2
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3
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4
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5
Correct Answer
A. 5Explanation
Holter monitoring is a continuous recording of the heart's activity for 24 to 48 hours. It requires the placement of electrodes on the patient's chest. Typically, a standard Holter monitor has five electrodes. These electrodes are strategically placed to capture the electrical signals of the heart from different angles and provide a comprehensive analysis of the heart's activity over the monitoring period.Rate this question:
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- 31.
Another name for the biscuspid valve is the:
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Mitral valve
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Aortic valve
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Pulmonary valve
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TRicuspid valve
Correct Answer
A. Mitral valveExplanation
The correct answer is Mitral valve. The mitral valve is also known as the bicuspid valve because it has two cusps or flaps. It is located between the left atrium and the left ventricle of the heart. It allows blood to flow from the left atrium to the left ventricle and prevents backflow of blood. The term "mitral" is derived from the resemblance of the valve to a bishop's miter, which is a type of hat.Rate this question:
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- 32.
What is the ratio of breaths to comprssions during performing CPR?
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8 to 16
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2 to 30
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1 to 15
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5 to 25
Correct Answer
A. 2 to 30Explanation
During CPR, the ratio of breaths to compressions is 2 to 30. This means that for every 2 breaths given, there should be 30 chest compressions performed. This ratio is important in order to maintain proper oxygenation and circulation during CPR, as the compressions help to circulate blood while the breaths provide oxygen to the person in need.Rate this question:
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- 33.
Which of the following pulse rates should be reported immediatley?
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Tachycardia
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Bradychardia
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120 bpm
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All of the above
Correct Answer
A. All of the aboveExplanation
All of the above pulse rates should be reported immediately because both tachycardia (abnormally fast heart rate) and bradycardia (abnormally slow heart rate) can indicate underlying health issues. A pulse rate of 120 bpm is also higher than the normal range (60-100 bpm), which could be a cause for concern. Therefore, any deviation from the normal pulse rate should be reported immediately to ensure prompt medical attention if needed.Rate this question:
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- 34.
A symmetrical inverted T wave is characteristic of:
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Ischemia
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Injury
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Necrosis
Correct Answer
A. IschemiaExplanation
A symmetrical inverted T wave on an electrocardiogram (ECG) is commonly seen in patients with ischemia. Ischemia refers to a lack of blood flow and oxygen supply to a particular area of the heart. This can occur due to a partial blockage in the coronary arteries. The inverted T wave indicates abnormal repolarization of the ventricles, which is a result of the ischemic condition. It is important to identify and treat ischemia promptly to prevent further damage to the heart muscle and reduce the risk of complications such as a heart attack.Rate this question:
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- 35.
Which side of the heart is a low-pressure system that pumps venous blood to the lungs?
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Left
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Right
Correct Answer
A. RightExplanation
The right side of the heart is a low-pressure system that pumps venous blood to the lungs. The right atrium receives deoxygenated blood from the body and then pumps it into the right ventricle. From there, the right ventricle pumps the blood to the lungs through the pulmonary artery. In the lungs, the blood picks up oxygen and gets rid of carbon dioxide before returning to the left side of the heart. The left side of the heart, on the other hand, is a high-pressure system that pumps oxygenated blood to the rest of the body.Rate this question:
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- 36.
Which of the following are possible causes of sinus tachycardia?
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Hypothermia, hypovolemia
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Hypoxia, calcium channel blocker overdose
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Fever, pain, anxiety
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Vomiting
Correct Answer
A. Fever, pain, anxietyExplanation
Sinus tachycardia is a condition characterized by a rapid heart rate originating from the sinus node in the heart. It can be caused by various factors, including fever, pain, and anxiety. When the body experiences fever, the heart rate increases as a response to the elevated body temperature. Similarly, pain and anxiety can also stimulate the sympathetic nervous system, leading to an increased heart rate. Therefore, fever, pain, and anxiety are possible causes of sinus tachycardia.Rate this question:
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- 37.
Which of the following correctly describes P wave?
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This is thought to be due to repolarization of the Purkinje conduction system
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It is the deflection produced by atrial depolarization
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It is the deflection produced by ventricular depolarization
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It is the deflection produced by ventricular repolarization
Correct Answer
A. It is the deflection produced by atrial depolarizationExplanation
The correct answer is "It is the deflection produced by atrial depolarization." The P wave on an electrocardiogram represents the depolarization of the atria, which is the electrical activation that causes the atria to contract. This is different from the QRS complex, which represents the depolarization of the ventricles. The statement about the repolarization of the Purkinje conduction system is incorrect, as the P wave does not represent repolarization.Rate this question:
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- 38.
On an EKG, what is the first negative deflection seen after the P wave?
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Q wave
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R wave
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S wave
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T wave
Correct Answer
A. Q waveExplanation
The Q wave is the first negative deflection seen after the P wave on an EKG. It represents the initial depolarization of the interventricular septum. The Q wave is followed by the R wave, which represents the depolarization of the main mass of the ventricles. The S wave represents the completion of ventricular depolarization. The T wave represents ventricular repolarization.Rate this question:
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- 39.
How many electrodes are used in a 12 lead EKG paper?
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23
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10
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12
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6
Correct Answer
A. 10Explanation
A 12 lead EKG paper uses 10 electrodes. Each lead requires two electrodes, one positive and one negative, making a total of 10 electrodes for all 12 leads. These electrodes are placed on specific locations on the patient's chest, arms, and legs to record the electrical activity of the heart from different angles.Rate this question:
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- 40.
Artifacts_____________
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Are not recorded on the EKG
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Result when there are additional voltages on the patient.
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Do not affect the quality of the recording.
Correct Answer
A. Result when there are additional voltages on the patient.Explanation
Artifacts are not recorded on the EKG because they are caused by additional voltages on the patient. These additional voltages can be caused by various factors such as patient movement, poor electrode placement, or electrical interference. While artifacts may appear on the EKG tracing, they do not represent the true electrical activity of the heart and can distort the interpretation of the EKG. Therefore, it is important to identify and minimize artifacts to obtain an accurate recording of the heart's electrical activity.Rate this question:
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- 41.
Normal sensitivity level for running EKG is:
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0.8mv
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1mv
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2mv
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1cm
Correct Answer
A. 1mvExplanation
The normal sensitivity level for running an EKG is 1mv. This means that the EKG machine is set to detect electrical activity in the heart at a level of 1 millivolt. This sensitivity level allows for accurate measurement and analysis of the heart's electrical signals, helping to diagnose any abnormalities or irregularities in the heart's rhythm.Rate this question:
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- 42.
_____________ is the ability of cardiac cells to spontaneously initiate an electrical impulse without being stimulated from another source (scuh as a nerve)
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Excitability
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Conductivity
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Automaticity
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Contractility
Correct Answer
A. AutomaticityExplanation
Automaticity refers to the ability of cardiac cells to generate electrical impulses on their own, without any external stimulation. This property allows the heart to maintain its own rhythm and initiate each heartbeat. Unlike other cells in the body, cardiac cells have the unique ability to depolarize spontaneously, creating an electrical signal that triggers the contraction of the heart muscle. This automaticity is crucial for the proper functioning of the heart and ensures a regular heartbeat.Rate this question:
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- 43.
A normal PR interval should measure:
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.08-.12 seconds
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.12-.20 seconds
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>.20 seconds
Correct Answer
A. .12-.20 secondsExplanation
A normal PR interval should measure between .12 and .20 seconds. This interval represents the time it takes for an electrical impulse to travel from the atria (the upper chambers of the heart) to the ventricles (the lower chambers of the heart). If the PR interval is shorter or longer than this range, it may indicate an abnormality in the electrical conduction system of the heart.Rate this question:
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- 44.
The heart muscle is made up of four major layers, the endocardium, the epicardium, the mitricardium, and the myocardium.
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True
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False
Correct Answer
A. FalseExplanation
The given statement is false. The heart muscle is not made up of four major layers including the mitricardium. The correct layers of the heart muscle are the endocardium, the epicardium, and the myocardium. The mitricardium is not a recognized layer of the heart muscle.Rate this question:
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- 45.
In using a holter monitor, how many hours minimum does the patient wear the monitor for?
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4 hours
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15 hours
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24 hours
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48 hours
Correct Answer
A. 24 hoursExplanation
The patient wears a holter monitor for a minimum of 24 hours. This is because a holter monitor is a portable device that continuously records the heart's electrical activity for a full day. It is used to detect and diagnose irregular heart rhythms or other cardiac abnormalities that may not be captured during a short-term electrocardiogram (ECG) test. Wearing the monitor for 24 hours allows for a comprehensive evaluation of the heart's function and can provide valuable information for the healthcare provider in making an accurate diagnosis.Rate this question:
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- 46.
The necrotic infracted area of the left ventricle after an M.I. cannot:
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Depolarize
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Repolarize
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Contract
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All of the above
Correct Answer
A. All of the aboveExplanation
After a myocardial infarction (M.I.), the necrotic infracted area of the left ventricle loses its ability to depolarize, repolarize, and contract. Depolarization is the process of the heart muscle cells generating an electrical impulse, which triggers the contraction of the heart. Repolarization is the recovery phase of the heart muscle cells after contraction. Contracting is the actual physical squeezing of the heart muscle that allows it to pump blood. Therefore, all of the above options are correct, as the necrotic area cannot perform any of these functions.Rate this question:
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- 47.
If the electrical conduction initiates in the SA Node the rhythm is said to be:
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Sinus
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Junctional
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Ventricular
Correct Answer
A. SinusExplanation
If the electrical conduction initiates in the SA Node, the rhythm is said to be sinus. The SA Node, or sinoatrial node, is located in the right atrium of the heart and is responsible for initiating the electrical impulses that regulate the heart rhythm. When the electrical conduction starts in the SA Node, it creates a normal sinus rhythm, which is the normal electrical pattern of the heart.Rate this question:
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- 48.
What is the correct order of chain of infection?
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Transmission-susceptible host-source
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Source-transmission-susceptible host
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None of the above
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Susceptible host-transportation-source
Correct Answer
A. Source-transmission-susceptible hostExplanation
The correct order of the chain of infection is source-transmission-susceptible host. In this order, the source refers to the origin of the infectious agent, such as a person or an object. Transmission refers to the transfer of the infectious agent from the source to a susceptible host, which can occur through direct contact, droplets, or other means. Finally, the susceptible host is the individual who is at risk of becoming infected. This order reflects the sequential steps in the transmission and acquisition of an infection.Rate this question:
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- 49.
The vertical axis of the EKG paper measures:
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Time
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Voltage/Amplitude
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Rhythm
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Heart rate
Correct Answer
A. Voltage/AmplitudeExplanation
The vertical axis of the EKG paper measures voltage/amplitude. This means that it represents the strength or intensity of the electrical signals generated by the heart. The EKG paper records these signals as waveforms, with the height of the waves indicating the voltage or amplitude. By measuring the voltage/amplitude, healthcare professionals can analyze the electrical activity of the heart and identify any abnormalities or irregularities.Rate this question:
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