CMT CMT Pharmacology and Cardiac Medications 2

Question 1

Which medication prolongs the QT interval and can predispose a patient to torsades de pointes?

Accepted Answer

Sotalol

Answer

Sotalol, a Class III antiarrhythmic, prolongs the QT interval and carries a risk of inducing torsades de pointes.

Question 2

A patient on heparin infusion shows a new rhythm change. What primary concern related to heparin should the CMT be aware of that affects cardiac risk?

Accepted Answer

Heparin-induced thrombocytopenia (HIT) can cause thrombotic events

Answer

HIT is a serious complication where heparin causes platelet aggregation, leading to potentially fatal thrombosis including coronary events.

Question 3

Beta-blockers such as metoprolol affect the cardiac monitor tracing by:

Accepted Answer

Prolonging the PR interval and decreasing heart rate

Answer

Beta-blockers slow AV nodal conduction, prolonging the PR interval and reducing heart rate on the ECG tracing.

Question 4

Which antiarrhythmic drug is typically used for acute management of stable wide-complex ventricular tachycardia?

Accepted Answer

Amiodarone

Answer

Amiodarone IV is a first-line agent for stable ventricular tachycardia due to its broad spectrum of antiarrhythmic activity.

Question 5

A patient receiving IV potassium replacement is on continuous cardiac monitoring. The CMT should monitor for:

Accepted Answer

Peaked T waves and widened QRS

Answer

Hyperkalemia produces peaked (tall, narrow, tent-shaped) T waves and QRS widening, which can progress to fatal arrhythmias.

(CMT) Certified Cardiac Monitor Technician Practice Test

(CMT) Certified Cardiac Monitor Technician Practice Test

CMT CMT Pharmacology and Cardiac Medications 2