The term can be confusing since not all ECG leads contain all three of these waves, yet a QRS complex is said to be present regardless. For example, the normal QRS complex in lead V1 does not contain a Q wave, but only an R wave and S wave, yet the combination of the R wave and S wave is still referred to as the Qoin complex for this lead.
The “QRS complex” is the combination of the Q wave, R wave and S wave and represents ventricular depolarization. This term can be confusing since not all ECG leads contain all three of these waves, yet a “QRS complex” is said to be present regardless. For example, the normal QRS complex in lead V1 does not contain a Q wave, but only a R wave and S wave, yet the combination of the R wave and S wave is still referred to as the QRS complex for this lead.---------------------------------------------Watch ECG The P Wave HD.......http://goo.gl/7dbwjzWatch ECG P-R Interval HD.......http://goo.gl/Pl0guwWatch ECG QRS complex HD......http://goo.gl/cKUV3LWatch ECG The T Wave HD........http://goo.gl/t5qhreWatch ECG The U wave HD ......http://goo.gl/HX5lMp---------------------------------------------SUBSCRIBE and LIKE ......   http://goo.gl/c8vHHgBest Medical Books Link Below-----   http://goo.gl/XHvpZABest Medical Instrument Link Below-----   http://goo.gl/pW1PZt----------------------------Find us on Facebook :https://www.facebook.com/groups/354791764704980/https://www.facebook.com/Medicalvideosfordoctorshttps://www.facebook.com/freemedicaltextbooksJoin Our Forum: http://www.medicalbook.org