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EKG PRACTICE EXAM 3 WITH VERIFIED SOLUTIONS
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EKG PRACTICE EXAM 3 WITH VERIFIED SOLUTIONS What is the P wave in an EKG? The P wave represents atrial depolarization, which is the electrical impulse that triggers the contraction of the atria. What does the PR interval indicate in an EKG? The PR interval represents the time it tak...

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  • November 11, 2024
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  • 2024/2025
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EKG PRACTICE EXAM 3 WITH VERIFIED
SOLUTIONS
What is the P wave in an EKG?


✔✔The P wave represents atrial depolarization, which is the electrical impulse that triggers the

contraction of the atria.




What does the PR interval indicate in an EKG?


✔✔The PR interval represents the time it takes for the electrical signal to travel from the atria to

the ventricles, including the delay at the AV node.




What is the normal duration for the QRS complex?


✔✔The normal duration for the QRS complex is between 0.06 and 0.10 seconds, representing

ventricular depolarization.




What does an elevated ST segment typically indicate?


✔✔An elevated ST segment can indicate myocardial injury, particularly in conditions like acute

myocardial infarction (heart attack).




1

, What is the T wave in an EKG?


✔✔The T wave represents the repolarization of the ventricles, the process where the ventricles

recover and prepare for the next contraction.




How do you identify atrial fibrillation on an EKG?


✔✔Atrial fibrillation is characterized by an absence of distinct P waves, with rapid, irregularly

spaced QRS complexes.




What does the QT interval measure in an EKG?


✔✔The QT interval measures the time from the beginning of ventricular depolarization to the

end of ventricular repolarization, and its duration should be corrected for heart rate (QTc).




What does a long QT interval indicate?


✔✔A prolonged QT interval can indicate an increased risk of arrhythmias, such as torsades de

pointes, and may be associated with certain medications or electrolyte imbalances.




What is the significance of the U wave in an EKG?




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