EKG Set Up And Leads

It is important for healthcare professionals to always identify themselves to the patient and verify the patient's identity by checking their armband, name, and birthdate. This helps to ensure that the right patient is receiving the right care and prevents any potential errors or mix-ups. By confirming the patient's identity, healthcare professionals can provide personalized and safe care to the patient.

The U wave is not always present in a normal electrocardiogram (ECG). It is a small deflection that follows the T wave and represents the repolarization of the Purkinje fibers in the heart. The presence of a U wave can indicate certain cardiac conditions such as electrolyte imbalances or abnormal ventricular repolarization. However, it is important to note that the U wave is not always seen in every individual's ECG and its absence does not necessarily indicate a problem.

The unipolar lead recorded from the right arm is AVR (Augmented Vector Right). This lead provides a view of the electrical activity of the heart from the perspective of the right arm. It is one of the standard limb leads used in electrocardiography to assess the electrical conduction system of the heart. The lowercase "avr" is also accepted as a correct answer, as it represents the same lead.

The unipolar lead that is recorded from the left arm is AVL. AVL stands for Augmented Vector Left arm, which is one of the six unipolar leads in the standard 12-lead electrocardiogram (ECG). It is recorded by placing the positive electrode on the left arm and the negative electrode on the right arm. AVL provides information about the electrical activity of the heart from a specific angle, helping to diagnose various cardiac conditions.

The unipolar lead that is recorded from the left foot is AVF or avf. Unipolar leads are used in electrocardiography to record electrical activity from specific locations on the body. AVF is the abbreviation for augmented vector foot, which is a standard unipolar lead recorded from the left foot. The lowercase "avf" is also accepted as a valid abbreviation for the same lead.

The statement is true because if a patient has oily skin, eczema rashes, or excessive hair, it is recommended to shave the site, rub sweaty skin with alcohol, or choose a site with the least amount of hair, oil, or irritation. These actions can help to ensure better adherence of medical devices or treatments to the skin and prevent further irritation or complications.

The P wave represents the depolarization of the atria, specifically the right and left atria. This wave indicates the initiation of the electrical impulse that causes the contraction of the atria, leading to blood being pumped into the ventricles. Therefore, the P wave is the correct answer as it directly corresponds to the depolarization of the atria.

The T wave shows ventricular repolarization. After the ventricles contract during the QRS wave, they need to reset and prepare for the next electrical impulse. This resetting is known as repolarization, and it is represented by the T wave on an electrocardiogram (ECG). During the T wave, the ventricles are relaxing and getting ready for the next heartbeat.

Cardiac activity is recorded on ECG paper and is shown in waves and deflection. The electrical activity of the heart produces a series of waves and deflections on the ECG paper. These waves represent the different phases of the cardiac cycle, such as depolarization and repolarization of the atria and ventricles. The deflections indicate the direction and magnitude of the electrical impulses generated by the heart. Therefore, waves and deflection accurately represent the recording of cardiac activity on an ECG paper.

The correct answer is 25 mm/sec. This is because paper generally runs through the machine at a speed of 25 mm/sec.

The correct answer is AC interference. AC interference refers to the presence of unwanted electrical signals in the form of alternating current that can interfere with the proper functioning of electronic devices. In this case, the fractured wire, loose wire/electrode, dirty electrodes, improper grounding, or faulty electrical wiring in the surroundings can introduce AC interference, which manifests as a regular vertical spiked line on the display. This artifact is a result of the interference caused by the AC signals.

The correct answer is "all of the above." An ECG, or electrocardiogram, is a graphic representation that measures electrical impulses originating from the myocardium. It is performed using a specialized recording device that uses electrodes to detect and record the electrical activity of the heart. An ECG provides information about the heart's rate, rhythm, and conduction, making all of the given options correct.

Each horizontal small block represents a unit of time, and each block represents 0.04 seconds.

The QRS wave shows the depolarization of both the right and left ventricles. During this wave, the electrical signals spread through the ventricles, causing them to contract and pump blood out of the heart. This wave is important for the proper functioning of the heart and is typically represented as a complex wave on an electrocardiogram (ECG).

V4 is the electrode that is placed under the breast.

Wave heights are commonly referred to as amplitudes. Amplitude is a measure of the maximum displacement or distance from the equilibrium position of a wave. It represents the magnitude or intensity of the wave and is often used to describe the size or height of the wave. Therefore, in the context of wave measurements, wave heights are synonymous with amplitudes.

The statement is false because it is not necessary to inform the patient that the average test takes about 15 minutes and they will feel discomfort from the electrical impulses. The average duration of the test and the level of discomfort can vary depending on the specific test and the individual patient. It is important to provide accurate and specific information to the patient based on their particular situation rather than making a general statement.

There are three bipolar leads.

A paper speed of 50 mm/sec will be requested if you have infants or fast rhythms and need to identify the P, QRS, and T waves easier. This is because a higher paper speed allows for a faster recording of the electrical activity of the heart, making it easier to distinguish the different waves.

The correct color combination of the limb leads is RA white, LA black, RL green, and LL red.

A rhythm strip refers to a continuous recording of a single lead or series of selected leads. This recording allows for the evaluation and analysis of the electrical activity of the heart over a specific period of time. By examining the rhythm strip, healthcare professionals can identify any abnormalities or irregularities in the heart's electrical signals, which can aid in diagnosing various cardiac conditions.

When a patient talks, moves, is tense, apprehensive, or uncomfortable during a recording, it can cause irregular vibrations in the recording. These vibrations are known as muscle tremors. Muscle tremors can distort the baseline of the recording, making it appear irregular. Therefore, muscle tremor is the correct answer to this question.

The PR interval is the time interval between the beginning of the P wave and the beginning of the QRS wave on an electrocardiogram (ECG). It represents the time it takes for the electrical signal to travel from the atria to the ventricles of the heart.

The QT interval is the distance between the beginning of the QRS wave and the end of the T wave.

Bipolar leads are leads that record more than one point of contact. In bipolar leads, two electrodes are used to measure the electrical activity of the heart. One electrode acts as the positive pole and the other as the negative pole. This allows for the measurement of the electrical potential difference between the two points, providing a more detailed and accurate representation of the heart's electrical activity.

If the electrodes are applied too tightly or too loosely, or if the cable is pulling on an electrode, it can cause movement or shifting of the electrodes. This movement can result in an unstable baseline on the electrocardiogram (ECG) tracing, which is known as a wandering baseline. To prevent this artifact, it is important to ensure that the lead wires are not twisted and are somewhat supported by the body.

Each vertical square on the graph paper represents voltage and is measured in 0.1 mV.

Placing the hands palm down under the buttocks can help to stabilize the tremors caused by Parkinson's disease. This position allows for better support and control of the hands and helps to reduce the shaking. By placing the hands in this position, the patient may experience a decrease in the severity of the tremors and have improved motor control.

The QRS wave represents ventricular depolarization, which is the electrical activation of the ventricles. Atrial repolarization occurs during the QRS complex, but it is not specifically represented by the QRS wave. Therefore, the given answer is incorrect.

The ST segment is the distance between the end of the QRS complex and the beginning of the T wave on an electrocardiogram (ECG).

The given answer correctly states that the colors in order are red, yellow, green, blue, orange, and purple. This is based on the sequence of colors provided in the question.

The most common artifacts in this context are wandering base line, muscle tremors, and AC interference. Wandering base line refers to the movement of the baseline in an electrocardiogram, which can be caused by loose electrodes or patient movement. Muscle tremors can cause unwanted movement in the signal, often due to patient anxiety or shivering. AC interference refers to the presence of external electrical signals in the recording, which can be caused by nearby electrical equipment or poor grounding. The other options, power outage and ink replacement light being on, are not artifacts but rather unrelated issues.

There are 9 unipolar leads in electrocardiography. Unipolar leads are used to measure the electrical activity of the heart from a single positive electrode, with the reference point being an average of all other electrodes. These leads provide a more comprehensive view of the heart's electrical activity from different angles and positions, allowing for a more accurate diagnosis of cardiac conditions.

Doctors order ECG's because they are cost efficient, non-invasive procedures that provide quick and accurate results. ECG's are essential for diagnoses and treatment as they give doctors important information about the heart's electrical activity, helping them identify any abnormalities or conditions that may require further attention.

The use of electrolyte solution in electrocardiography is important for two main reasons. Firstly, it helps conduct impulses by providing a medium through which the electrical signals generated by the heart can travel more efficiently. This allows for accurate readings and interpretation of the heart's activity. Secondly, the electrolyte solution helps adhere the sensors to the skin surface, ensuring good contact between the electrodes and the skin. This is crucial for obtaining clear and reliable signals during the electrocardiogram recording.

The correct answer is calibration pulse and standardization pulse. When the machine is checking the frequency response of impulses, it uses a calibration pulse or standardization pulse. This pulse is represented as a squared off segment on the strip. It helps to calibrate or standardize the machine and ensure accurate measurements of frequency response.