In the case of bradycardia due to heart block, which treatment is often required?

In cases of bradycardia due to heart block, pacing is often required to restore a normal heart rate and maintain adequate cardiac output. Heart block can impede the electrical signals in the heart, leading to a significantly slowed heart rate that may not supply sufficient blood flow to vital organs. Transcutaneous pacing or transvenous pacing may be employed to stimulate the heart to beat at an appropriate rate.

Cardioversion is typically used in scenarios involving tachyarrhythmias or unstable ventricular rhythms, not bradycardia due to heart block. Fluid resuscitation is important in cases of shock or dehydration but does not directly address the underlying problem of bradycardia caused by heart block. Antibiotics are relevant for treating infections, not cardiac rhythm abnormalities. Thus, pacing is the most effective intervention for managing bradycardia associated with heart block.