Comparison of the efficacy of oral versus intravascular magnesium in the prevention of hypomagnesemia and arrhythmia after cabg
Rev. bras. cir. cardiovasc
;
33(5): 448-453, Sept.-Oct. 2018. tab, graf
Article
in English
| LILACS
| ID: biblio-977448
ABSTRACT
Abstract Objective:
Cardiac arrhythmias are a common challenge following open-heart surgeries. Hypomagnesemia is believed to be correlated with this condition. Prophylactic intravenous magnesium supplementation has been practiced for a long time in patients undergoing CABG. This study was designed in an attempt to compare the efficacy of oral versus intravenous routes in the prevention of hypomagnesemia and arrhythmia.Methods:
In this interventional clinical study, 82 patients were randomly assigned to 2 groups. All patients were evaluated for baseline serum magnesium level and arrhythmias. One group received 1,600 mg of oral magnesium hydroxide through nasogastric (NG) tube prior to surgery, while the other group received 2 g of magnesium sulfate during the induction of anesthesia. The serum magnesium level was monitored for 48 hours after the operation. The difference in preoperative hypomagnesemia was non-significant (Sig 0.576).Results:
During the operation, the serum magnesium level peaked around 4 mg/dL, and no hypomagnesemia was detected in any patient. Although the curve of oral group declined parallel and below that of intravenous (IV) group, no significant differences were detected during postoperative monitoring. In addition, a prevalence of arrhythmia of 13.9% and 6.5% was noticed in IV and oral groups, respectively (OR 0.428).Conclusion:
Providing 1,600 mg of oral magnesium supplement to patients is as effective as 2,000 mg of magnesium sulfate IV in preventing hypomagnesemia and arrhythmia after CABG. Thus, the authors introduce this treatment regimen as a promising and cost-effective method.
Full text:
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Index:
LILACS (Americas)
Main subject:
Arrhythmias, Cardiac
/
Postoperative Complications
/
Coronary Artery Bypass
/
Magnesium
/
Magnesium Hydroxide
Type of study:
Controlled clinical trial
/
Etiology study
/
Risk factors
Limits:
Female
/
Humans
/
Male
Language:
English
Journal:
Rev. bras. cir. cardiovasc
Journal subject:
Cardiology
/
General Surgery
Year:
2018
Type:
Article
Affiliation country:
Iran
Institution/Affiliation country:
Shiraz University of Medical Sciences/IR
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