What does depressed T wave indicate?
T-wave inversion in the anterior precordial leads may be seen in cases of acute pulmonary embolism, while flat- tened T waves with prominent U waves and ST-segment depression may reflect hypokalemia or digitalis therapy.
What causes an abnormal T wave?
These abnormalities are thought to be due to sympathetic discharge from the central nervous system. Specific disease entities associated with cerebral T waves include subarachnoid hemorrhage, massive ischemic stroke, subdural hematoma, and traumatic brain injury.
What does a flattened T wave mean?
Flattened T waves are a non-specific finding, but may represent. Ischaemia (if dynamic or in contiguous leads) or. Electrolyte abnormality, e.g. hypokalaemia (if generalised)
Can anxiety cause inverted T-waves?
(HealthDay)—Depression and anxiety are independently, yet oppositely, associated with electrocardiographic (ECG) T-wave inversions, according to a study published in the Dec. 15 issue of The American Journal of Cardiology.
What does the T wave on the ECG represent?
Introduction. The T wave on the ECG (T-ECG) represents repolarization of the ventricular myocardium. Its morphology and duration are commonly used to diagnose pathology and assess risk of life-threatening ventricular arrhythmias.
Is Flat T wave normal?
V1: Inverted or flat T-wave is rather common, particularly in women. The inversion is concordant with the QRS complex.
What does it mean when the T wave is negative?
T-wave inversion means that the T-wave is negative. The T-wave is negative if its terminal portion is below the baseline, regardless of whether its other parts are above the baseline. T-wave inversions are frequently misunderstood, particularly in the setting of ischemia. Normal T-wave inversion. An isolated (single) T-wave inversion in lead V1
How are T waves abnormal in Wellens syndrome?
There are two patterns of T-wave abnormality in Wellens syndrome: Type A = Biphasic T waves with the initial deflection positive and the terminal deflection negative (25% of cases) Type B = T-waves are deeply and symmetrically inverted (75% of cases) Note: The T waves evolve over time from a Type A to a Type B pattern
When is an upright T wave considered abnormal?
Loss of precordial T-wave balance. Loss of precordial T-wave balance occurs when the upright T wave is larger than that in V6. This is a type of hyperacute T wave. The normal T wave in V1 is inverted. An upright T wave in V1 is considered abnormal — especially if it is tall (TTV1), and especially if it is new (NTTV1).
Are there any persistent juvenile T wave patterns?
Persistent Juvenile T-wave Pattern T-wave inversions in the right precordial leads may persist into adulthood and are most commonly seen in young Afro-Caribbean women. Persistent juvenile T-waves are asymmetric, shallow (<3mm) and usually limited to leads V1-3.