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Calcium supplementation resolves chest pain and ECG abnormalities in a patient with hypoparathyroidismCalcium Eases Chest Pain in Hypoparathyroidism Case

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Key Takeaway
Recognize that hypoparathyroidism can cause ECG changes mimicking acute coronary syndrome, which may resolve with calcium.

This case report describes a single patient presenting with chest pain and evolving ECG changes associated with hypoparathyroidism. The report focuses on the clinical presentation of hypoparathyroidism and the subsequent response to calcium supplementation.

Following calcium supplementation, the patient experienced successfully alleviated chest pain and complete normalization of ECG findings. Specifically, the treatment resulted in the resolution of deep T-wave inversions and QT-interval prolongation. These findings suggest that hypoparathyroidism can present with ECG manifestations mimicking acute coronary syndrome.

The primary limitation of this evidence is the small sample size of a single case report, which precludes the establishment of definitive diagnostic rules or general clinical guidelines. However, the case highlights the importance of recognizing hypoparathyroidism as a potential cause of cardiac symptoms and ECG abnormalities. Clinicians should consider the role of calcium status in patients presenting with atypical chest pain and significant ECG changes.

How this fits prior evidence

This case report addresses a gap in the clinical recognition of hypoparathyroidism as a cause of cardiac symptoms. While previous coverage noted that Sanjad–Sakati syndrome requires urgent calcium correction, this report specifically highlights the role of calcium in resolving ECG abnormalities like deep T-wave inversions and QT-interval prolongation in hypoparathyroidism. It does not relate to the findings regarding vertebral fracture risks or the lack of fracture prevention benefit from calcium in low-risk adults.

A case report describes a patient with hypoparathyroidism who came to the hospital with chest pain and an electrocardiogram (ECG) that looked like a heart attack. The ECG showed deep T-wave inversions and a prolonged QT interval, which are changes that can also occur with acute coronary syndrome. The patient received calcium supplementation, and both the chest pain and the ECG abnormalities completely resolved.

This was a single case report, meaning it describes just one person's experience. The patient's symptoms and ECG changes went away after calcium treatment, but this does not prove that calcium caused the improvement. It is possible that other factors were involved. Because it is only one case, the findings cannot be applied broadly to all people with hypoparathyroidism.

The main takeaway is that healthcare providers should be aware that hypoparathyroidism can cause ECG changes that mimic a heart attack. Recognizing this could help avoid unnecessary procedures or treatments. However, this report is not enough to change clinical practice or establish new guidelines.

If you have hypoparathyroidism and experience chest pain or ECG changes, it is important to seek medical attention. Always discuss any symptoms or treatment concerns with your doctor, as this case report does not provide personal medical advice.

What this means for you:
In one case, calcium supplementation was linked to relief of chest pain and ECG changes in hypoparathyroidism, but more research is needed.

Common questions

What did the case report find?

In a single patient with hypoparathyroidism, calcium supplementation was followed by relief of chest pain and normalization of ECG changes, including deep T-wave inversions and QT-interval prolongation. This suggests a possible link, but it is not proof because it is only one case.

Who was in the case report?

The case report involved one patient with hypoparathyroidism who presented with chest pain and evolving ECG changes. The patient received calcium supplementation, and the symptoms and ECG findings resolved. Since it is a single case, the results may not apply to everyone.

Is calcium supplementation safe for hypoparathyroidism?

The case report did not report any adverse events or safety concerns related to calcium supplementation. However, because this is a single case, it does not provide enough information to fully assess safety. Always consult your doctor before starting or changing any treatment.

Study Details

Study typeSystematic review
EvidenceLevel 1
PublishedSep 2026
View Original Abstract ↓
ObjectiveTo promptly identify electrocardiographic (ECG) manifestations, including deep T-wave inversions and QT-interval prolongation, secondary to hypoparathyroidism and to improve its diagnostic accuracy and therapeutic management.MethodsWe conducted a comprehensive analysis of the integrated treatment for a patient presenting with chest pain and evolving ECG changes secondary to hypoparathyroidism, supplemented by a review of the relevant literature.ResultsIn this case, a patient diagnosed with hypoparathyroidism presented with chest pain and dynamic ECG alterations. Following a confirmed diagnosis, treatment with calcium supplementation successfully alleviated the patient's chest pain and resulted in the complete normalization of the previously abnormal ECG findings.ConclusionClinical presentations mimicking angina pectoris, accompanied by secondary ECG changes such as deep T-wave inversions and QT-interval prolongation, are relatively uncommon in patients with hypoparathyroidism. A thorough evaluation combining clinical presentation, characteristic signs, and laboratory investigations can significantly reduce the rate of misdiagnosis.
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