Tall tented T waves in hyperkalemia occur primarily due to:
Acceleration of ventricular repolarization
In hyperkalaemia the increased extracellular K+ raises the resting membrane potential and accelerates phase 3 ventricular repolarisation (faster potassium efflux). The ECG consequence is a tall, tented, narrow-based T wave.
Prolonged depolarisation (QRS widening) is a later sign of more severe hyperkalaemia, delayed atrial depolarisation causes P-wave flattening, and SA-node suppression explains bradyarrhythmias — none directly explains the tall tented T.
Hence, Acceleration of ventricular repolarization.
Similar Questions
Tall, peaked P waves on ECG are most commonly associated with:
What is the main purpose of the Einthoven triangle in electrophysiology?
What does the QT interval on a normal ECG primarily represent?
A patient presents with muscle weakness, and the ECG shows flattened T waves and prominent U waves. Which electrolyte imbalance is most probable?
Sinus bradycardia is associated with:
ST elevation in leads V1 to V4 most commonly indicates infarction of which wall of the heart?
During ECG machine calibration, what is the standard voltage signal used to check the sensitivity?
Which component of the ECG lead system is responsible for detecting electrical impulses from the heart?
Left ventricular hypertrophy on ECG is commonly indicated by:
How many standard limb leads are used in a basic ECG procedure?
Important Questions from Basic Cardiovascular Investigations
Tall, peaked P waves on ECG are most commonly associated with:
What is the main purpose of the Einthoven triangle in electrophysiology?
What does the QT interval on a normal ECG primarily represent?
A patient presents with muscle weakness, and the ECG shows flattened T waves and prominent U waves. Which electrolyte imbalance is most probable?
Sinus bradycardia is associated with:
