Synonym: Hyperpotassemia Definition: Serum potassium (K+) > 5 mEq/l Electrophysiologic basis of ECG changes: In patients with mild hyperkalemia, potassium conductance (IKr) through potassium channels is increased, which tend to shorten the AP duration and on the ECG causing tall tented T waves. With severe hyperkalemia, effect on RMP becomes…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Basics of ECG- Interpretation of waves and intervals
A normal ECG is electrical representation of a normal heart beat or sinus rhythm. The cardiac action potential causing deporalization and repolarization of various cardiac tissues gives a pattern of rhythic change is Electrocardiograph which can be used to diagnose different diseases of the CVS. Normal Rate The beats…