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CMC Cardiac Medicine Certification

Category - CMC

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A nurse records an EKG of an asymptomatic person coming for routine check-up. After looking at the EKG, which of the following findings might the nurse say that there is nothing wrong with the EKG?

PR interval of 210 milliseconds
Fibrillatory waves
ST-T changes in precordial leads
Saw-tooth pattern

Explanation

Answer- A - After looking at the PR interval of 210 milliseconds, the nurse can say that there is nothing wrong with the EKG. First degree AV block is characterized by prolonged PR interval (greater than 200 millisecond), which can also occur as a normal variant in some individuals.

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CMC Cardiac Medicine Certification

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CMC Cardiac Medicine Certification

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