Question

216. A physician is preparing to administer a drug for which there is a label warning: "do not administer this drug to patients with second-degree
or greater heart block, or give with other drugs that may cause heart block." Which finding would be specifically indicative of heart block, and
second-degree heart block in particular?
3. Auscultation of the precordium reveals an irregular rhythm
b. Blood pressure is low
c. Heart rate is abnormally low (bradycardia), but there is normal sinus rhythm
d. ECG reveals ventricular ectopic beats
e. ECG shows an excessively prolonged PR interval, and some Pwaves are not followed by a normal QRS complex
f. ECG shows abnormally widened QRS complexes​

Answer 1

A is the correct answer,