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Titolo:
Relationship between serum potassium concentration and risk of recurrent ventricular tachycardia or ventricular fibrillation
Autore:
Michaud, GF; Sticherling, C; Tada, H; Oral, H; Pelosi, F; Knight, BP; Morady, F; Strickberger, SA;
Indirizzi:
Univ Michigan, Med Ctr, Div Cardiol, Dept Internal Med, Ann Arbor, MI 48109 USA Univ Michigan Ann Arbor MI USA 48109 nternal Med, Ann Arbor, MI 48109 USA
Titolo Testata:
JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY
fascicolo: 10, volume: 12, anno: 2001,
pagine: 1109 - 1112
SICI:
1045-3873(200110)12:10<1109:RBSPCA>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
DEFIBRILLATORS;
Keywords:
cardiac arrest; implantable defibrillator; arrhythmia recurrence;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
6
Recensione:
Indirizzi per estratti:
Indirizzo: Strickberger, SA Univ Michigan, Med Ctr, Div Cardiol, Dept Internal Med, 1500 E Med Ctr Dr,UH B1F245, Ann Arbor, MI 48109 USA Univ Michigan 1500 E Med Ctr Dr,UH B1F245 Ann Arbor MI USA 48109
Citazione:
G.F. Michaud et al., "Relationship between serum potassium concentration and risk of recurrent ventricular tachycardia or ventricular fibrillation", J CARD ELEC, 12(10), 2001, pp. 1109-1112

Abstract

Serum Potassium and Defibrillator Shocks. Introduction: Electrolyte abnormalities are considered a correctable cause of a life-threatening ventricular arrhythmia according to American Heart Association/American College of Cardiology Practice Guidelines, and ventricular tachycardia or ventricular fibrillation in the setting of an electrolyte abnormality is considered a class III indication for defibrillator implantation. However, there are littledata to support this recommendation. The purpose of this study was to determine the risk of a recurrent sustained ventricular arrhythmia in patients with a low serum potassium concentration at the time of an initial episode of a sustained ventricular arrhythmia. Methods and Results: One hundred sixty-nine consecutive patients who presented with a sustained ventricular arrhythmia and a serum potassium concentration determined on the day of the arrhythmia underwent defibrillator implantation. All patients had structural heart disease and left ventricular ejection fraction of 0.32 +/-0.15. On the day of the index arrhythmia, 30% of the patients had a serum potassium concentration <3.5 or >5.0 mEq/L, including 7% who had a serum potassium concentration <3.0 or >6.0 mEq/L. For the entire cohort of patients, freedom from a recurrent sustained ventricular arrhythmia was 18% at 5 years and was not significantly different among patients with a serum potassium concentration <3.5 mEq/L (23%), between 3.5 and5.0 mEq/L (16%), and >5.0 mEq/L (5%; P = 0.1). Conclusion: The results of the present study suggest that patients with structural heart disease and an abnormal serum potassium concentration at thetime of an initial episode of sustained ventricular tachycardia or ventricular fibrillation are at high risk for a recurrent ventricular arrhythmia; therefore, implantable defibrillator therapy may be reasonable.

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Documento generato il 27/11/20 alle ore 13:32:44