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Ann Thorac Surg 1996;62:242-245
© 1996 The Society of Thoracic Surgeons

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Original Articles: General Thoracic

One Hundred Consecutive Thymectomies for Myasthenia Gravis

Division of Cardiothoracic Surgery, Department of Surgery, and Department of Neurology, University of North Carolina School of Medicine, Chapel Hill, North CarolinaUSA

Background. Between June 1977 and November 1993, 100 consecutive thymectomies for myasthenia gravis were performed at University of North Carolina Hospitals in Chapel Hill.

Methods. A consistent, planned protocol involving preoperative, intraoperative, and postoperative care was followed. All thymectomies were performed through a median sternotomy with removal of all visible thymus and perithymic fat in the anterior mediastinum.

Results. There was no perioperative mortality or long-term morbidity. Mean postoperative hospital stay was 6.3 days (range, 3 to 18 days). Ninety-six percent of the patients were extubated the day of the operation, and all patients were extubated within 24 hours. Mean postoperative intensive care unit stay was 1.2 days (range, 1 to 4 days). After a mean follow-up of 65 months (range, 1 to 199 months), 78% of all patients are improved by at least one modified Osserman classification when their current status is compared with their worst preoperative disease severity. In fact, 69% of patients with mild disease preoperatively (class I, II, or III maximal severity) are in pharmacologic remission (asymptomatic without regular medication), whereas 29% of patients with severe disease (class IV or V) are in remission (p = 0.0001).

Conclusions. Our programmatic approach to thymectomy through a sternotomy has shown minimal morbidity and mortality. It is beneficial to myasthenics at both ends of the age and severity spectrum.

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Discussion
Ann. Thorac. Surg. 1996 62: 245. [Extract] [Full Text]

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