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Ann Thorac Surg 2003;75:337-341
© 2003 The Society of Thoracic Surgeons

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Original article: general thoracic

Surgical volume and quality of care for esophageal resection: do high-volume hospitals have fewer complications?

^a Department of Surgery, the University of Michigan Medical Center, Ann Arbor, Michigan, USA
^b Department of Surgery, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA

Accepted for publication September 5, 2002.

* Address reprint requests to Dr Lipsett, Department of Surgery, The Johns Hopkins Hospital, 600 N Wolfe Street, Blalock 685, Baltimore, MD 21287-4685, USA
e-mail: plipsett{at}jhmi.edu

BACKGROUND: Previous studies have shown that high-volume hospitals (HVHs) have lower mortality rates than low-volume hospitals (LVHs). However, little is known regarding the relationship of morbidity to hospital volume. The objective of the current study was to investigate the relative incidence of postoperative complications after esophageal resection at HVHs and LVHs.

METHODS: All patients discharged from a nonfederal, acute-care hospital in Maryland after esophageal resection from 1994 to 1998 were included (n = 366). Rates of 10 postoperative complications were compared at HVHs and LVHs. Risk-adjusted analyses were performed using multiple logistic regression.

RESULTS: High-volume hospitals had a mortality rate of 2.5% compared with 15.4% at LVHs (p < 0.001), with a case-mixed adjusted odds ratio (OR) of death equal to 5.7 (95% confidence interval [CI], 2.0 to 16; p < 0.001). Low-volume hospitals had a profound increase in the risk of several complications after adjusting for case-mix: renal failure (OR, 19; 95% CI, 1.9 to 178; p = 0.01), pulmonary failure (OR, 4.8; 95% CI, 1.6 to 14; p = 0.002), septicemia (OR, 4.0; 95% CI, 1.1 to 15; p = 0.04), reintubation (OR, 2.9; 95% CI, 1.4 to 6.1; p = 0.004), surgical complications (OR, 3.3; 95% CI, 1.6 to 6.9; p = 0.001), and aspiration (OR, 1.8; 95% CI, 1.0 to 3.3; p = 0.04).

CONCLUSIONS: Patients undergoing esophageal resection at LVHs were at a markedly increased risk of postoperative complications and death. Pulmonary complications are particularly prevalent at LVHs and contribute to the death of patients having surgery at those centers.

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