Differential Diagnosis for Hypermagnesemia
- Single most likely diagnosis
- Excessive magnesium sulfate administration: The patient was administered magnesium sulfate for blood pressure management, and the laboratory results show a magnesium level of 9.2 mg/dL, which is above the therapeutic range. This suggests that the patient may have received too much magnesium sulfate, leading to hypermagnesemia.
- Other Likely diagnoses
- Renal insufficiency: The patient has elevated serum creatinine, indicating renal impairment. The kidneys are responsible for excreting excess magnesium, and impaired renal function can lead to hypermagnesemia.
- Do Not Miss
- Magnesium sulfate overdose with renal failure: This is a potentially life-threatening condition that requires immediate attention. If the patient's renal function is severely impaired, the magnesium sulfate can accumulate to toxic levels, leading to respiratory depression, cardiac arrest, and even death.
- Rare diagnoses
- Familial hypocalciuric hypercalcemia: This is a rare genetic disorder that affects calcium and magnesium metabolism. However, it is unlikely to be the primary cause of hypermagnesemia in this patient, given the context of recent magnesium sulfate administration.
- Other rare causes of hypermagnesemia, such as lithium therapy or excessive dietary intake, are also unlikely in this scenario, given the patient's presentation and treatment.