T wave
T wave is a term used in Electrocardiography to describe the representation of the repolarization (or recovery) of the ventricles (the lower chambers of the heart) in an Electrocardiogram (ECG).
Overview[edit | edit source]
The T wave contains more information than the QRS complex; in the normal ECG, the T-wave is always upright in leads I, II, V3-V6, and variable in leads III, aVL, aVF, V1 and V2.
Physiology[edit | edit source]
The T wave represents the repolarization of the ventricles. The exact details of the repolarization process are still being studied, but it is generally accepted that the outer epicardial layers of the ventricular myocardium repolarize before the endocardial layers, and that the apex of the heart repolarizes before the base.
Clinical significance[edit | edit source]
Abnormalities in the T wave can represent a number of conditions, most importantly ischemia. Other conditions can also cause T wave abnormalities, including hypokalemia, hyperkalemia, and hypomagnesemia.
See also[edit | edit source]
References[edit | edit source]
| T wave Resources | |
|---|---|
|
 |
Search WikiMD
Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available.
Advertise on WikiMD
|
WikiMD's Wellness Encyclopedia |
| Let Food Be Thy Medicine Medicine Thy Food - Hippocrates |
Translate this page: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
தமிழ்,
తెలుగు,
Urdu,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
বাংলা
European
español,
Deutsch,
français,
Greek,
português do Brasil,
polski,
română,
русский,
Nederlands,
norsk,
svenska,
suomi,
Italian
Middle Eastern & African
عربى,
Turkish,
Persian,
Hebrew,
Afrikaans,
isiZulu,
Kiswahili,
Other
Bulgarian,
Hungarian,
Czech,
Swedish,
മലയാളം,
मराठी,
ਪੰਜਾਬੀ,
ગુજરાતી,
Portuguese,
Ukrainian
Medical Disclaimer: WikiMD is not a substitute for professional medical advice. The information on WikiMD is provided as an information resource only, may be incorrect, outdated or misleading, and is not to be used or relied on for any diagnostic or treatment purposes. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition. WikiMD expressly disclaims responsibility, and shall have no liability, for any damages, loss, injury, or liability whatsoever suffered as a result of your reliance on the information contained in this site. By visiting this site you agree to the foregoing terms and conditions, which may from time to time be changed or supplemented by WikiMD. If you do not agree to the foregoing terms and conditions, you should not enter or use this site. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.
Contributors: Prab R. Tumpati, MD
