The presence of severe<unk> -degree atrioventricular block (PR >0.30 s) and a narrow QRS usually indicates atrioventricular node delay. However, ambulatory ECG monitoring is useful for finding the alternative changes in QRS morphology. In addition, exercise stress test can be used to identify the ischemia as the precursor of the development of atrioventricular block.
First degree AV block other diagnostic studies
Second degree AV block other diagnostic studies
Third degree AV block other diagnostic studies
Atrioventricular block other diagnostic studies
Junctional tachycardia other diagnostic studies
Wide complex tachycardia risk factors
Atrial flutter other diagnostic studies
Ventricular tachycardia other disgnostic tests