Severe hypocalcemia simulating ST-elevation myocardial infarction
Erkki Ilveskoski1, Samuel Sclarovsky, Kjell Nikus
1Department of Cardiology, Tampere University Hospital Heart Center, PO Box 2000, FI-33521 Tampere, Finland. erkki.ilveskoski@uta.fi
Insights
Severe hypocalcemia mimicking ST-elevation myocardial infarction (STEMI) was observed in a patient with vitamin D deficiency. Prompt calcium replacement normalized ECG findings, highlighting a rare cause of STEMI-like presentation.
Area of Science:
- Cardiology
- Endocrinology
- Medical Diagnostics
Background:
- ST-elevation myocardial infarction (STEMI) requires urgent reperfusion therapy.
- Diagnosis relies on electrocardiogram (ECG) showing ST-segment elevation, typically due to coronary artery occlusion.
- Mimicking ECG changes can arise from non-coronary causes.
Observation:
- A 65-year-old male presented with ECG abnormalities suggestive of STEMI.
- Coronary angiography revealed patent coronary arteries, ruling out acute occlusion.
- Laboratory investigations identified severe hypocalcemia linked to vitamin D deficiency.
Findings:
- ECG changes normalized following intravenous calcium replacement therapy.
- The patient recovered fully and was discharged in stable condition.
- This case adds to the limited reports of hypocalcemia-induced ST-segment elevation.
Implications:
- Hypocalcemia should be considered in the differential diagnosis of STEMI-like ECG presentations.
- Vitamin D deficiency-related hypocalcemia can present with critical cardiac manifestations.
- Further research is needed to elucidate the mechanism of ECG changes in hypocalcemia.
Abstract:
ST-elevation myocardial infarction (STEMI) is an emergency situation in which immediate measures for myocardial reperfusion are needed. The diagnosis is based on the recognition of ST-segment elevation in the electrocardiogram (ECG). In case of coronary artery occlusion, ST-segment elevation is caused by an injury current from the ischemic myocardium. Rarely, other mechanisms may lead to ECG changes mimicking STEMI. In our case, a 65-year-old man was presented to our institution with ECG abnormalities suggestive of STEMI. However, coronary angiography showed open arteries. Laboratory tests revealed severe hypocalcemia caused by a deficiency of vitamin D. After calcium replacement therapy, the ECG normalized, and the patient was discharged in good condition. Only a few case reports on hypocalcemia-induced ST-segment elevation exist, and the mechanism remains unknown.
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