1/ Let’s talk about T waves #CardioTwitter
The T wave represents typically ventricular repolarization. It is the most labile wave on the EKG surface.
Normal T wave
✅ Morphology: Asymmetric.
✅ Amplitude: ≤6 mm in limb leads and ≤10 mm in precordial leads.
#MedTwitter
The T wave represents typically ventricular repolarization. It is the most labile wave on the EKG surface.
Normal T wave
✅ Morphology: Asymmetric.
✅ Amplitude: ≤6 mm in limb leads and ≤10 mm in precordial leads.
#MedTwitter
2/ Tall upright T wave
Tall upright T waves are usually characterized by tall and peaked shape.
✅ Amplitude: >6 mm in limb leads and >10 mm in precordial leads.
Causes: Hyperkalemia, hyperacute MI, normal variant, prinzmetal angina, aortic stenosis, LVH, RVH, others.
#ecg
Tall upright T waves are usually characterized by tall and peaked shape.
✅ Amplitude: >6 mm in limb leads and >10 mm in precordial leads.
Causes: Hyperkalemia, hyperacute MI, normal variant, prinzmetal angina, aortic stenosis, LVH, RVH, others.
#ecg
3/ Notched T wave
Possible causes: May be caused by morphological changes in the cardiomyocytes' action potential waveforms. Another causes include: Drugs (such as Dofetilide, Quinidine, Ranolazine, Verapamil), long QT syndrome, athletes, others.
#MedTwitter #MedStudentTwitter
Possible causes: May be caused by morphological changes in the cardiomyocytes' action potential waveforms. Another causes include: Drugs (such as Dofetilide, Quinidine, Ranolazine, Verapamil), long QT syndrome, athletes, others.
#MedTwitter #MedStudentTwitter
4/ Inverted T wave
Causes: Myocardial ischemia (acute or chronic), MI, BBB, hypertrophic cardiomyopathy, PE, raised intracranial pressure, persistent juvenile T wave, normal finding in children, LVH, RVH, others.
Isolated T wave inversion in lead III can be a normal variant.
Causes: Myocardial ischemia (acute or chronic), MI, BBB, hypertrophic cardiomyopathy, PE, raised intracranial pressure, persistent juvenile T wave, normal finding in children, LVH, RVH, others.
Isolated T wave inversion in lead III can be a normal variant.
5/ Biphasic T wave
Biphasic T wave can be with "terminal positivity (down-up)" or "terminal negativity (up-down)".
Causes: Myocardial ischemia, hypokalemia, reperfusion phase, others.
If biphasic T wave with terminal negativity is present in V2-V3, consider Wellens type I.
Biphasic T wave can be with "terminal positivity (down-up)" or "terminal negativity (up-down)".
Causes: Myocardial ischemia, hypokalemia, reperfusion phase, others.
If biphasic T wave with terminal negativity is present in V2-V3, consider Wellens type I.
6/ Giant Inverted T wave
✅ Morphology: Giant and symmetrical.
✅ Amplitude: ≥10 mm.
Causes: Severe ischemia, pheochromocytoma, electroconvulsive therapy, brain bleed, cocaine abuse, post-pacemaker syndrome, apical hypertrophic cardiomyopathy, others.
#MedTwitter #ecg
✅ Morphology: Giant and symmetrical.
✅ Amplitude: ≥10 mm.
Causes: Severe ischemia, pheochromocytoma, electroconvulsive therapy, brain bleed, cocaine abuse, post-pacemaker syndrome, apical hypertrophic cardiomyopathy, others.
#MedTwitter #ecg
7/ Hyperacute T wave
Hyperacute T wave have been reported in association with acute myocardial ischemia due to critical stenosis or occlusion of a coronary artery that may occur in the very early phases of myocardial infarction within the 30 minutes of onset of symptoms.
#ecg
Hyperacute T wave have been reported in association with acute myocardial ischemia due to critical stenosis or occlusion of a coronary artery that may occur in the very early phases of myocardial infarction within the 30 minutes of onset of symptoms.
#ecg
8/ The EKGs are courtesy of EKGDX App.
You can download the App here: onelink.to/7bp23c
If you want to know more about it, read the following 🧵👇
You can download the App here: onelink.to/7bp23c
If you want to know more about it, read the following 🧵👇
https://twitter.com/ekgdx/status/1582375688945836032?s=46&t=c7v3BijYEzcgm7mPQkmijg
9/ If you get here, you should know about our threads (check the following🧵👇)
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