Therefore, this is a normal sinus rhythm with atrial bigeminy. The RR intervals are only slightly irregular because of the much longer PR interval of the premature atrial complex.

The QT/QTc intervals are normal (400 msec/440 msec). A P wave (+) is present before each of these narrow QRS complexes with a stable PR interval (0.36 sec).

The absolute QT interval on this ECG is approximately 640 ms which is quite long, but the QTc when accounting for the slow heart rate is about 380 ms which is normal.

Artificial intelligence (AI) can detect signs of existing or emerging A-fib in ECGs that exhibit normal sinus rhythm, Mayo Clinic researchers have found. Their retrospective analysis, published online ...

The QT interval is a measurement on the ECG that represents how long it takes for the heart to recover after it contracts before it's ready to contract again.

Beat-to-beat analysis of ECG was performed with an algorithm developed and validated in the Holter Laboratory of Lariboisiere Hospital as previously described in detail. 27, 30 The algorithm ...

An asymptomatic male patient with definite LQTS with a normal ECG and QTc who was flagged by the AI. Photo Credit: J. Martijn Bos and Michael Ackerman. A new artificial intelligence (AI) solution ...