Let's Test Your Cardiac Knowledge With This Quiz

Reviewed by Editorial Team
The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.
Learn about Our Editorial Process
| By Lveal
L
Lveal
Community Contributor
Quizzes Created: 7 | Total Attempts: 38,158
| Attempts: 1,304 | Questions: 20
Please wait...
Question 1 / 20
0 %
0/100
Score 0/100
1. What are the two different polypeptide chains for CK?

Explanation

The correct answer is M,B. This suggests that CK (Creatine Kinase) is composed of two different polypeptide chains, one being M and the other being B. The presence of these two chains indicates that CK is a heterodimeric protein, consisting of two different subunits.

Submit
Please wait...
About This Quiz
Lets Test Your Cardiac Knowledge With This Quiz - Quiz

Dive into cardiac science with our quiz titled 'Let's test your Cardiac knowledge'. Assess key concepts such as troponin levels, sensitivity equations, and CK-MB usage across different age groups. This quiz is ideal for medical students or professionals looking to validate or expand their cardiac care knowledge.

Personalize your quiz and earn a certificate with your name on it!
2. BNP greater than >400 could mean CHF.

Explanation

A BNP (B-type natriuretic peptide) level greater than 400 can indicate congestive heart failure (CHF). BNP is a hormone released by the heart when it is under stress or strain, and elevated levels suggest the presence of heart failure. Therefore, it is true that a BNP level greater than 400 could indicate CHF.

Submit
3. What is the most sensitive and specific marker available today for AMI?

Explanation

Troponin is the most sensitive and specific marker available today for Acute Myocardial Infarction (AMI). Troponin is a protein found in cardiac muscle cells, and its presence in the bloodstream indicates damage to the heart muscle. It is highly specific to cardiac tissue, making it a reliable marker for diagnosing AMI. Additionally, troponin levels rise within a few hours of the onset of symptoms, allowing for early detection of a heart attack. Other markers like CKMB, myoglobin, and CK may also be elevated in AMI, but troponin is considered the gold standard due to its superior sensitivity and specificity.

Submit
4. CK-MB can not be used in neonates.

Explanation

CK-MB, also known as creatine kinase-MB, is an enzyme that is used as a marker for heart muscle damage. However, it is not reliable in neonates, which are newborn infants. This is because the levels of CK-MB in neonates can be elevated due to various factors unrelated to heart muscle damage, such as birth trauma or muscle breakdown. Therefore, CK-MB cannot be used as a reliable indicator of heart muscle damage in neonates.

Submit
5. The likelihood that a test will give a negative result when the disease is absent is termed specificity

Explanation

The explanation for the given correct answer is that specificity refers to the ability of a test to correctly identify individuals without the disease as negative. In other words, it measures the likelihood of a test giving a negative result when the disease is actually absent. Therefore, the statement that "the likelihood that a test will give a negative result when the disease is absent is termed specificity" is true.

Submit
6. Myolglobin rises how soon after onset of AMI?

Explanation

Myoglobin is a protein found in muscle tissue and is released into the bloodstream when there is muscle damage. In the case of an acute myocardial infarction (AMI), also known as a heart attack, the heart muscle is damaged. Therefore, myoglobin levels start to rise in the bloodstream as early as 2 hours after the onset of an AMI. This early rise in myoglobin levels can be helpful in diagnosing a heart attack quickly.

Submit
7. Which marker is the first to rise after AMI?

Explanation

Myoglobin is the first marker to rise after an acute myocardial infarction (AMI) because it is a small, oxygen-binding protein found in cardiac muscle. When there is damage to cardiac muscle cells during an AMI, myoglobin is released into the bloodstream. It can be detected in the blood within hours of the onset of symptoms, making it an early indicator of myocardial injury. Troponin, CK, and CK-MB are also markers used to diagnose AMI, but myoglobin is the first to rise.

Submit
8. When does CK-MB peak?

Explanation

CK-MB refers to creatine kinase MB, which is an enzyme found predominantly in the heart muscle. It is released into the bloodstream following a myocardial infarction (heart attack). The CK-MB levels start to rise within a few hours after the onset of a heart attack and typically peak around 24 hours. After the peak, the levels gradually decrease over the next few days. Therefore, the correct answer is 24 hours.

Submit
9. How many hours do troponin begin to rise?

Explanation

Troponin is a protein that is released into the bloodstream when there is damage to the heart muscle. It is a marker used to diagnose heart attacks. The question is asking how long it takes for troponin levels to begin to rise after a heart attack. The correct answer is 4 hours, meaning that within 4 hours of a heart attack, troponin levels in the blood will start to increase. This is an important time frame to consider when diagnosing and treating patients with suspected heart attacks.

Submit
10. How long do the cTNI concentrations stay elevated? 

Explanation

The correct answer is 9 DAYS. This suggests that cTNI concentrations stay elevated for a period of 9 days. This could indicate a prolonged release of cardiac troponin I, which is a protein released into the bloodstream after damage to the heart muscle. Elevated cTNI levels can be indicative of a heart attack or other cardiac conditions. The prolonged elevation of cTNI levels for 9 days suggests a significant and potentially serious cardiac event.

Submit
11. What is a marker for heart failure?

Explanation

BNP, or B-type natriuretic peptide, is a marker for heart failure. It is a hormone released by the heart in response to increased pressure and stretching of heart muscle cells. Elevated levels of BNP in the blood indicate the presence of heart failure. BNP levels can help diagnose and monitor the severity of heart failure, as well as guide treatment decisions. Other markers such as myoglobin, troponin, and CKMB are not specific to heart failure and are used for diagnosing other conditions such as myocardial infarction.

Submit
12. A rise in BNP is correlated with a decrease in what function?

Explanation

An increase in BNP levels is associated with a decrease in left ventricular ejection fraction. B-type natriuretic peptide (BNP) is released by the ventricles of the heart in response to increased pressure and volume overload. It acts as a marker for heart failure and is used to assess cardiac function. A rise in BNP indicates impaired left ventricular function, which leads to a decrease in the left ventricular ejection fraction. This means that the heart is not effectively pumping blood out of the left ventricle, resulting in a decrease in the amount of blood ejected with each contraction.

Submit
13. Troponin is normally detected in the bloodstream?

Explanation

Troponin is not normally detected in the bloodstream. Troponin is a protein that is found in cardiac muscle cells and is released into the bloodstream when there is damage to the heart muscle, such as during a heart attack. Therefore, the presence of troponin in the bloodstream indicates cardiac injury or damage, rather than being a normal occurrence.

Submit
14. When troponin is elevated, CK-MB help distinguish what?

Explanation

When troponin levels are elevated, CK-MB can help distinguish when the acute myocardial infarction (AMI) took place. CK-MB is an enzyme that is released into the bloodstream after a heart attack. By measuring the levels of CK-MB, healthcare professionals can determine the timing of the AMI, which is crucial for determining the appropriate treatment and interventions for the patient.

Submit
15. Which biomarker can detect minor myocardial damage and microinfarction?

Explanation

Troponin is a biomarker that can detect minor myocardial damage and microinfarction. Troponin is a protein found in cardiac muscle cells, and its levels in the blood increase when there is damage to the heart muscle. It is a highly sensitive and specific marker for myocardial injury, making it an important tool in diagnosing and monitoring heart conditions such as myocardial infarction. Myoglobin and CK-MB are also biomarkers used in diagnosing heart conditions, but they are less specific and sensitive compared to troponin.

Submit
16. What is the equation for sensitivity?

Explanation

The equation for sensitivity is calculated by dividing the number of true positives by the sum of true positives and false negatives, and then multiplying the result by 100. This equation represents the proportion of actual positive cases that are correctly identified as positive by a test. It is a measure of the test's ability to correctly identify individuals with the condition or disease.

Submit
17. How long do CK-MB stay elevated for?

Explanation

CK-MB is an enzyme that is released into the bloodstream after a heart attack. The levels of CK-MB in the blood typically start to rise within a few hours of a heart attack and reach their peak within 24 to 48 hours. After reaching the peak, the levels gradually decrease over the next 48 to 72 hours. Therefore, CK-MB levels stay elevated for 48 to 72 hours after a heart attack.

Submit
18. When does troponin peak?

Explanation

Troponin is a protein released into the bloodstream when there is damage to the heart muscle. It is commonly used as a marker to diagnose heart attacks. Troponin levels typically start to rise within a few hours after a heart attack and peak around 24-48 hours. However, in some cases, it may take up to 3 days for troponin levels to reach their peak. Therefore, the correct answer is 3 days.

Submit
19. CK-MB in normal individual is less than what percent of total CK?

Explanation

The correct answer is 3%. CK-MB is a specific form of creatine kinase that is found mainly in the heart muscle. In a normal individual, the CK-MB level is expected to be less than 3% of the total CK level. This is because CK-MB is only a small fraction of the total creatine kinase, which includes other forms like CK-MM (found in skeletal muscle) and CK-BB (found in the brain). Therefore, a CK-MB level less than 3% is considered within the normal range.

Submit
20. Match the following
Submit
View My Results

Quiz Review Timeline (Updated): Jul 25, 2024 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Jul 25, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 03, 2015
    Quiz Created by
    Lveal
Cancel
  • All
    All (20)
  • Unanswered
    Unanswered ()
  • Answered
    Answered ()
What are the two different polypeptide chains for CK?
BNP greater than >400 could mean CHF.
What is the most sensitive and specific marker available today for...
CK-MB can not be used in neonates.
The likelihood that a test will give a negative result when the...
Myolglobin rises how soon after onset of AMI?
Which marker is the first to rise after AMI?
When does CK-MB peak?
How many hours do troponin begin to rise?
How long do the cTNI concentrations stay elevated? 
What is a marker for heart failure?
A rise in BNP is correlated with a decrease in what function?
Troponin is normally detected in the bloodstream?
When troponin is elevated, CK-MB help distinguish what?
Which biomarker can detect minor myocardial damage and...
What is the equation for sensitivity?
How long do CK-MB stay elevated for?
When does troponin peak?
CK-MB in normal individual is less than what percent of total CK?
Match the following
Alert!

Advertisement