Back الفترة بي آر (رسم قلب) Arabic Interval PR Catalan Intervalo PR Spanish מרווח PR HE Intervallo PR Italian PR 간격 Korean Odstęp PQ Polish PQ (PR) интервал Serbian ช่วงพีอาร์ Thai Інтервал PQ Ukrainian
In electrocardiography, the PR interval is the period, measured in milliseconds, that extends from the beginning of the P wave (the onset of atrial depolarization) until the beginning of the QRS complex (the onset of ventricular depolarization); it is normally between 120 and 200 ms in duration. The PR interval is sometimes termed the PQ interval.