[Increase in blood potassium and subsequent normalization: effects on the electrocardiogram. Case report].
Significant variations in the ECG have been observed in a female aged 77 with heart failure and chronic atrial fibrillation during an occasional increase in blood potassium followed by normalization. The major phenomena observed during hyperkalemia, due to a severe dehydration, were a transient sinus rhythm with atrio-ventricular block followed by atrial activity disappearance and advent of interventricular and fascicular block. Therapeutic normalization of blood potassium leads to a progressive disappearance of intraventricular and fascicular block, a temporary sinus rhythm and finally the return to atrial fibrillation which was the steady state of the patient before the blood potassium imbalance.
Cecchetti
G
G
Arlotti
M
M
Cecchetti
V
V
D000368:Aged; D001145:Arrhythmias, Cardiac / Q000097:blood / Q000209:etiology* / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006333:Heart Failure / Q000097:blood* / Q000503:physiopathology; D006801:Humans; D006947:Hyperkalemia / Q000150:complications* / Q000503:physiopathology
Aumento della potassiemia e successiva normalizzazione: effetti sull'elettrocardiogramma. Descrizione di un caso.