Vol 59, No 11 (2003)
Other
Published online: 2005-12-12
Submitted: 2012-12-28
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Acute coronary syndrome: potassium, magnesium and cardiac arrhythmia

Paweł Maciejewski, Bronisław Bednarz, Tomasz Chamiec, Aleksander Górecki, Rafał Łukaszewicz, Leszek Ceremużyńsk
Kardiol Pol 2003;59(11):405-406.
Vol 59, No 11 (2003)
Other
Published online: 2005-12-12
Submitted: 2012-12-28

Abstract

Background: Cardiac arrhythmia is often present in patients with acute coronary syndrome (ACS) and may be due to the electrolyte imbalance.
Aim: To assess the prevalence and clinical significance of electrolyte imbalance in ACS.
Methods: Serum potassium and magnesium levels were measured within the first few hours in 204 consecutive patients with ACS admitted to our department over a period of 23 months. Cardiac arrhythmia was documented using continuous ECG monitoring, telemetry or standard ECG.
Results: Hypokalemia was observed in 34% of patients, and was significantly associated with the occurrence of life-threatening ventricular arrhythmias (26% of patients with potassium level <4 mmol/l vs 11.9% of patients with normokalemia, p<0.001). No relationship was found between potassium level and supraventricular arrhythmias or in-hospital mortality. Decreased magnesium serum concentration was found in 22% of patients but was not significantly associated with cardiac arrhythmias or mortality.
Conclusions: Hypokalemia and hypomagnesemia are often present in patients with ACS. The former is associated with dangerous ventricular arrhythmias. Early assessment of electrolyte serum concentration is needed in order to implement proper supplementation.

Abstract

Background: Cardiac arrhythmia is often present in patients with acute coronary syndrome (ACS) and may be due to the electrolyte imbalance.
Aim: To assess the prevalence and clinical significance of electrolyte imbalance in ACS.
Methods: Serum potassium and magnesium levels were measured within the first few hours in 204 consecutive patients with ACS admitted to our department over a period of 23 months. Cardiac arrhythmia was documented using continuous ECG monitoring, telemetry or standard ECG.
Results: Hypokalemia was observed in 34% of patients, and was significantly associated with the occurrence of life-threatening ventricular arrhythmias (26% of patients with potassium level <4 mmol/l vs 11.9% of patients with normokalemia, p<0.001). No relationship was found between potassium level and supraventricular arrhythmias or in-hospital mortality. Decreased magnesium serum concentration was found in 22% of patients but was not significantly associated with cardiac arrhythmias or mortality.
Conclusions: Hypokalemia and hypomagnesemia are often present in patients with ACS. The former is associated with dangerous ventricular arrhythmias. Early assessment of electrolyte serum concentration is needed in order to implement proper supplementation.
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Keywords

acute coronary syndrome - electrolyte imbalance - arrhythmia

About this article
Title

Acute coronary syndrome: potassium, magnesium and cardiac arrhythmia

Journal

Kardiologia Polska (Polish Heart Journal)

Issue

Vol 59, No 11 (2003)

Pages

405-406

Published online

2005-12-12

Bibliographic record

Kardiol Pol 2003;59(11):405-406.

Keywords

acute coronary syndrome - electrolyte imbalance - arrhythmia

Authors

Paweł Maciejewski
Bronisław Bednarz
Tomasz Chamiec
Aleksander Górecki
Rafał Łukaszewicz
Leszek Ceremużyńsk

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