Association of postoperative complications with hospital costs and length of stay in a tertiary care center.

BACKGROUND: Postoperative complications are a significant source of morbidity and mortality. There are limited studies, however, assessing the impact of common postoperative complications on health care resource utilization. OBJECTIVE: To assess the association of clinically important postoperative complications with total hospital costs and length of stay (LOS) in patients undergoing noncardiac surgery. METHODS: We determined total hospital costs and LOS in all patients admitted to a single tertiary care center between July 1, 1996 and March 31, 1998 using a detailed administrative hospital discharge database. Total hospital costs and LOS were adjusted for preoperative and surgical characteristics. RESULTS: Of 7,457 patients who underwent noncardiac surgery, 6.9% developed at least 1 of the postoperative complications. These complications increased hospital costs by 78% (95% confidence interval [CI]: 68% to 90%) and LOS by 114% (95% CI: 100% to 130%) after adjustment for patient preoperative and surgical characteristics. Postoperative pneumonia was the most common complication (3%) and was associated with a 55% increase in hospital costs (95% CI: 42% to 69%) and an 89% increase in LOS (95% CI: 70% to 109%). CONCLUSIONS: Postoperative complications consume considerable health care resources. Initiatives targeting prevention of these events could significantly reduce overall costs of care and improve patient quality of care.

Location of residence associated with the likelihood of patient visit to the preoperative assessment clinic.

BACKGROUND: Outpatient preoperative assessment clinics were developed to provide an efficient assessment of surgical patients prior to surgery, and have demonstrated benefits to patients and the health care system. However, the centralization of preoperative assessment clinics may introduce geographical barriers to utilization that are dependent on where a patient lives with respect to the location of the preoperative assessment clinic. METHODS: The association between geographical distance from a patient's place of residence to the preoperative assessment clinic, and the likelihood of a patient visit to the clinic prior to surgery, was assessed for all patients undergoing surgery at a tertiary health care centre in a major Canadian city. The odds of attending the preoperative clinic were adjusted for patient characteristics and clinical factors. RESULTS: Patients were less likely to visit the preoperative assessment clinic prior to surgery as distance from the patient's place of residence to the clinic increased (adjusted OR = 0.52, 95% CI 0.44-0.63 for distances between 50-100 km, and OR = 0.26, 95% CI 0.21-0.31 for distances greater than 250 km). This 'distance decay' effect was remarkable for all surgical specialties. CONCLUSION: The present study demonstrates that the likelihood of a patient visiting the preoperative assessment clinic appears to depend on the geographical location of patients' residences. Patients who live closest to the clinic tend to be seen more often than patients who live in rural and remote areas. This observation may have implications for achieving the goals of equitable access, and optimal patient care and resource utilization in a single universal insurer health care system.

Utilization of a preoperative assessment clinic in a tertiary care centre.

OBJECTIVE: To describe the utilization of a preoperative assessment clinic (PAC) by various surgical divisions, and the types of consultations sought by those divisions. DESIGN: Cross-sectional descriptive study of PAC utilization. SETTING: A large university-affiliated tertiary care centre. PATIENTS: All patients who underwent surgical procedures by selected surgical divisions between July 1, 1996, and Mar. 31, 1998. MEASUREMENTS: The number of patients referred to the centre's PAC, utilization by surgical division, and the types of consultation obtained (general internal medicine, anesthesia, cardiology, intensive care). Adjusted rates of consultations were determined by logistic regression, controlling for age, sex, comorbidity and major versus minor procedure. RESULTS: Of 9603 surgical cases, 5725 (60%) were referred to the PAC. The adjusted rates of PAC utilization ranged from a low of 46% for cardiovascular and thoracic surgery to a high of 72% for general surgery. The adjusted rates of general internal medicine consultations ranged from 5% for oral surgery to 33% for otolaryngology. For anesthesia consultations, the rates ranged from 6% for orthopedics to 39% for general surgery. Increasing age (odds ratio [OR] = 1.14 for 10-year age increments), female sex (OR = 1.23), major surgery (OR = 1.94) and a number of comorbidity variables were significant predictors of PAC referral on multivariable analysis. CONCLUSIONS: PAC utilization varies across surgical divisions and in the types of consultation sought, even when controlling for age, sex, comorbidity and type of procedure. The potential exists for standardized PAC referral guidelines to reduce these variations.