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In ECG Tracings, Extension of the P-R Interval to More

Question 89

Multiple Choice

In ECG tracings, extension of the P-R interval to more than 200 msec most likely can indicate which of the following?


A) coronary ischemia or myocardial damage
B) congenital heart defect
C) electrolyte disturbances
D) damage to the conducting pathways
E) inadequate blood supply to the heart

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