A combination of the Q wave, R wave and S wave, the “QRS complex” represents ventricular depolarization. This term can be confusing, as not all ECG leads contain all three of these waves ...

Some patients with narrow QRS complexes have echocardiographic evidence of left ventricular mechanical dyssynchrony and may also benefit from CRT. We enrolled 172 patients who had a standard ...

The atrial rate is indicated by the frequency of the P waves. The ventricular rate is indicated by the frequency of the QRS complexes. In the absence of disease, the atrial rate should be the same ...

1). What is the mechanism for the progressive widening of QRS complexes and for the normal narrow QRS complexes observed in the 13 and 18 atrial-paced beats? The occurrence of overdrive atrial ...

This page lists all known medications that could potentially lead to 'Electrocardiogram QRS complex' as a side effect. It's important to note that mild side effects are quite common with medications.

The PR interval refers to the time between the first deflection of the P wave and the first deflection of the QRS complex. The QT interval describes the time between the beginning of QRS complex ...

Since CRT-induced proarrhythmia in patients with a narrow QRS complex could account in part for the increased mortality among patients randomly assigned to active therapy in this study, the ...

This page lists all known medications that could potentially lead to 'QRS complex' as a side effect. It's important to note that mild side effects are quite common with medications. The medication ...