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[Cardiac failure caused by cardiomyopathy disclosing pheochromocytoma. Perioperative treatment]
C Chardigny1, D Bensasson, J P Couetil
1Service d'Anesthésie-Réanimation Chirurgicale, Hôpital Broussais, Paris.
Insights
A case of cardiomyopathy caused by an undiagnosed pheochromocytoma was successfully treated by tumor removal. This intervention resolved the heart failure, improving the patient's prognosis.
Area of Science:
- Cardiology
- Endocrinology
- Oncology
Background:
- Pheochromocytoma, a rare neuroendocrine tumor, can cause secondary cardiomyopathy.
- Undiagnosed pheochromocytoma can lead to severe congestive cardiac failure, even requiring consideration for cardiac transplant.
- Medical management with beta-blockers and ACE inhibitors may be insufficient for pheochromocytoma-induced cardiomyopathy.
Observation:
- A patient presented with severe cardiomyopathy and congestive cardiac failure (ejection fraction 11%) secondary to an unrecognized pheochromocytoma.
- Despite aggressive medical therapy, the patient's condition remained critical, necessitating surgical intervention.
- Surgical excision of the pheochromocytoma was performed with planned mechanical circulatory support.
Findings:
- Complete surgical removal of the pheochromocytoma led to rapid clinical improvement of cardiac failure within days.
- While cardiac function improved significantly, some myocardial impairment persisted for ten months post-surgery.
- The study highlights the potential for complete recovery from pheochromocytoma-induced cardiomyopathy after tumor resection.
Implications:
- This case underscores the importance of considering pheochromocytoma in the differential diagnosis of unexplained cardiomyopathy.
- Successful surgical management of pheochromocytoma can reverse cardiac dysfunction, offering a favorable prognosis for patients.
- Perioperative monitoring, including the use of beta-blockers and assessment of mixed venous oxygen saturation (SvO2), is crucial for managing these complex cases.
Abstract:
A case of cardiomyopathy secondary to an unrecognised pheochromocytoma is reported. It was cured by successful outset with congestive cardiac failure with an ejection fraction of 11%. Following medical treatment including a beta-blocker and converting enzyme inhibitors, the situation remained so disturbing that cardiac transplant was envisaged. It was nevertheless decided to first remove the tumour, with mechanical circulatory assistance cover if necessary. Surgical excision proved to be relatively easy. Cardiac failure disappeared clinically within a few days, though a degree of myocardial impairment revealed by paraclinical investigations persisted after ten months. The pathophysiology, beneficial effect of beta-blockers and the SvO2 usefulness blood during the perioperative period are discussed. The prognosis of the cardiomyopathy, considered up to the present to be uncertain, new seems favourable once it is possible to completely excise the tumour.