Oct 8, 2024 · U wave Overview. The U wave is a small (0.5 mm) deflection immediately following the T wave. U wave is usually in the same direction as the T wave. U wave is best seen in leads V2 and V3. Source of the U wave. The source of the U wave is unknown. Three common theories regarding its origin are: Delayed repolarisation of Purkinje fibres

The U wave is a wave on an electrocardiogram (ECG). It comes after the T wave of ventricular repolarization and may not always be observed as a result of its small size. 'U' waves are thought to represent repolarization of the Purkinje fibers .

Feb 2, 2025 · The U wave is the wave that begins with the second heart sound and after the T wave returns to the baseline or close to it. 1 It is a low-amplitude and low-frequency deflection that occurs after the end of the T wave 2 .

Oct 24, 2024 · U wave elevation on an electrocardiogram (ECG) is a rare finding that can be associated with various cardiac and non-cardiac conditions. The U wave is the small deflection following the T wave on the ECG, and its elevation can be indicative of underlying health issues.

The U wave is a small bump that follows the T wave on an ECG, with the peak of the U wave occurring ~90-110 ms after the end of the T wave. Oftentimes, the U wave is too flat to be perceived. It is unclear what causes the U wave.

Oct 5, 2024 · U-waves are generally concordant with the T-wave and <25% of the T-wave height. U-waves must be distinct from the preceding T-wave, with a brief isoelectric baseline after the preceding T-wave (which may be best seen in Leads II and V5).

Statements concerning the U wave should be included in the ECG interpretation when the U wave is inverted, when it is merged with the T wave, or when its amplitude is greater than that of the T wave.

U waves are usually best seen in the right precordial leads especially V2 and V3. The normal U wave is asymmetric with the ascending limb moving more rapidly than the descending limb (just the opposite of the normal T wave).

• U waves are prominent if > 1-2mm or 25% of the height of the T wave. • The most common cause of prominent U waves is bradycardia. • Abnormally prominent U waves are characteristically seen in severe hypokalaemia.

Learn about the mechanism of U wave formation in ECG, including prominent and inverted U waves, and their significance in cardiac assessments.