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Automated Computerized-based Intervention to Identify Hypomagnesemia in Primary Care Patients With Arrhythmia.

Maite López-Garrigós^1,2,3, Miguel Ahumada^4,5, María Leiva-Salinas⁶

¹Clinical Laboratory, Hospital Universitario de San Juan, San Juan de Alicante, Spain.

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Summary

Early diagnosis of hypomagnesemia in arrhythmia patients is crucial. An automated lab system intervention successfully identified cases, proving useful and affordable for timely magnesium supplementation.

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Area of Science:

Clinical Chemistry
Cardiology
Laboratory Medicine

Background:

Hypomagnesemia is frequently underdiagnosed, delaying essential magnesium supplementation.
Early identification of low serum magnesium is critical for managing patients with cardiac arrhythmias.

Purpose of the Study:

To implement and evaluate an automated laboratory intervention for detecting hypomagnesemia in patients diagnosed with arrhythmia.
To assess the utility and cost-effectiveness of this diagnostic approach.

Main Methods:

A cross-sectional laboratory study utilizing a Laboratory Information System (LIS).
The LIS automatically ordered serum magnesium tests for primary care patients with an arrhythmia diagnosis.
Prevalence of hypomagnesemia (serum magnesium <1.7 mg/dL) and cost per case were calculated.

Main Results:

Out of 430 patients with arrhythmia, 41 (9.5%) presented with hypomagnesemia.
Patients with hypomagnesemia were significantly older (66.3±13.2 years) than those with normal magnesium levels (61.6±12.5 years).
The reagent cost per identified hypomagnesemia case was 3.15€.

Conclusions:

An automated, computer-based intervention effectively identifies hypomagnesemia in arrhythmia patients.
This method is a useful and affordable strategy for improving diagnosis and enabling timely magnesium supplementation.