Open Access
Editorial
Table 2
Side effects of magnesium sulfate. (DTRs: deep tendon reflexes; ECG: electrocardiogram; PTH: parathyroid hormone).
| Serum level | Symptoms | Signs | ECG concerns | Other |
|---|---|---|---|---|
| 4–6 mEq/L | Nausea, vomiting, headache | Decreased DTRs and hypotension due to vasodilation | – | Associated with increased potassium and decreased calcium levels |
| 6–10 mEq/L | Nausea, vomiting, lethargy and headache | Absent DTRs, bradycardia, and hypotension | Increased QRS duration and propagation of PR and QT intervals | Increased PTH release leading to decreased calcium levels |
| >10 mEq/L | Coma, paralysis, respiratory failure, and cardiac arrest | Complete heart block |
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