Resident work hour limits and patient safety

Area of Science:

• Surgical Patient Safety
• Healthcare Policy
• Medical Education

Background:

• Resident physician work hour limits were implemented in New York in 1998 and nationwide in 2003.
• A key assumption was that these limits would enhance patient safety.
• This study investigates the policy's impact on surgical patient safety indicators in New York.

Purpose of the Study:

• To evaluate the effect of resident physician work hour limits on surgical patient safety.
• To analyze trends in specific Patient Safety Indicators (PSIs) following policy implementation.

Main Methods:

• An interrupted time series analysis was conducted using Nationwide Inpatient Sample data (1995-2001).
• The study compared PSI trends in New York teaching hospitals (intervention group) with control groups (New York nonteaching hospitals and California teaching hospitals).
• Key PSIs analyzed included accidental puncture or laceration (APL), postoperative pulmonary embolism or deep venous thrombosis (PEDVT), foreign body left during procedure (FB), iatrogenic pneumothorax (PTX), and postoperative wound dehiscence (WD).

Main Results:

• Analysis included approximately 2.6 million New York discharges annually.
• A statistically significant increase in APL and PEDVT rates was observed post-policy implementation in New York teaching hospitals.
• No significant changes in FB, PTX, or WD rates were found in New York teaching hospitals, nor were any changes observed in the control groups.

Conclusions:

• Resident work hour limits in New York teaching hospitals were not associated with improved surgical patient safety.
• Worsening trends in APL and PEDVT rates were noted following the enforcement of work hour limits.
• The findings suggest that current resident work hour policies may not be achieving their intended patient safety benefits.