Which of the following is true of Class 2 antiarrhythmic drugs?
A) They tend to shorten the cardiac refractory period.
B) They increase the excitability, conduction, and automaticity of ventricular muscle.
C) They decrease heart rate, atrioventricular (AV) conduction, and automaticity of the sinoatrial (SA) and AV nodes.
D) They are mainly indicated for arrhythmias that originate below the AV node.
Correct Answer:
Verified
Q5: Which of the following statements is true
Q6: Antiarrhythmic drugs produce effective antiarrhythmic actions by:
A)
Q7: Identify an accurate statement about disopyramide.
A) Disopyramide
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Q9: Ectopic foci are often caused due to:
A)
Q11: The excessive prolongation of the QT interval
Q12: Dr.Cooper notices some irregularities in Alex's heartbeat.After
Q13: Antiarrhythmic drugs primarily affect the activity of
Q14: What happens during Phase 4 of the
Q15: Which of the following ions plays a
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