Q-T interval


Q-T in·ter·val

(in'tĕr-văl) The time from Q wave (of QRS complex) to the end of the T wave as it can be measured on an electrocardiogram; corresponds to ventricular systole.

Q-T interval

The representation on the electrocardiogram of ventricular depolarization and repolarization, beginning with the QRS complex and ending with the T wave. Synonym: Q-T segmentSee also: interval