ECG Tutorial   
line11.gif (1202 bytes)


Heart Rate
PR Interval
QRS Interval
QT Interval


To determine the QT Interval.

The QT interval begins at the onset of the QRS complex and terminates at the end of the T wave. It represents the time of ventricular depolarization and repolarization. It is useful as a measure of repolarization and is influenced by electrolyte balance, drugs, and ischemia. The QT interval is inversely related to heart rate. A QT interval corrected for heart rate can be calculated.

Copyright 1999 University of Pennsylvania School of Veterinary Medicine
Faculty Sponsor: Dr. Virginia Reef
Student: Jeff Horst  V'02
Date this page was last updated: July 29, 2002