Which of the following could make Diltiazem contraindicated for a patient?

Which of the following could make Diltiazem contraindicated for a patient?

• A. Low potassium levels
• B. High degree heart block
• C. Heart murmur
• D. Minor arrhythmia

Answer: (B)

Diltiazem is a calcium channel blocker commonly used in the treatment of hypertension, angina, and certain cardiac arrhythmias. Its mechanism of action involves the relaxation of vascular smooth muscle and the slowing of conduction through the atrioventricular (AV) node. A high degree heart block indicates a significant impairment in the conduction system of the heart, where the signals from the atria do not effectively reach the ventricles. In cases of high degree heart block, the administration of Diltiazem can worsen the situation by further slowing down conduction through the AV node. This can lead to serious complications, such as bradycardia (slow heart rate) or asystole (absence of heartbeats), making it a critical contraindication for use. In contrast, while low potassium levels, heart murmurs, and minor arrhythmias may have their own clinical significance and potential impacts on cardiac function, they do not create the immediate, potentially life-threatening consequences associated with high degree heart block that would contraindicate the use of Diltiazem.

Diltiazem is a calcium channel blocker commonly used in the treatment of hypertension, angina, and certain cardiac arrhythmias. Its mechanism of action involves the relaxation of vascular smooth muscle and the slowing of conduction through the atrioventricular (AV) node.

A high degree heart block indicates a significant impairment in the conduction system of the heart, where the signals from the atria do not effectively reach the ventricles. In cases of high degree heart block, the administration of Diltiazem can worsen the situation by further slowing down conduction through the AV node. This can lead to serious complications, such as bradycardia (slow heart rate) or asystole (absence of heartbeats), making it a critical contraindication for use.

In contrast, while low potassium levels, heart murmurs, and minor arrhythmias may have their own clinical significance and potential impacts on cardiac function, they do not create the immediate, potentially life-threatening consequences associated with high degree heart block that would contraindicate the use of Diltiazem.