Determining perioperative complications associated with vaginal hysterectomy: code classification versus chart review

Area of Science:

• Gynecology
• Surgical Outcomes Research
• Health Informatics

Background:

• Accurate identification of complications following vaginal hysterectomy (VH) is essential for improving patient outcomes.
• Current methods using coded data may underestimate morbidity compared to manual chart review.
• This study investigates the discrepancy between coded data and chart review in identifying VH complications.

Purpose of the Study:

• To compare the accuracy of coded data versus chart review in identifying complications after vaginal hysterectomy.
• To determine the extent to which coded data underestimates or misses complications.
• To inform best practices for outcomes assessment in gynecologic surgery.

Main Methods:

• Retrospective review of medical records for 712 women who underwent VH between January 2004 and December 2005.
• Complications assessed included cardiac/respiratory arrest, heart failure, pulmonary edema, pulmonary embolism, UTI, ureteral obstruction, hemorrhage, and delirium.
• Comparison of complications identified via coded diagnostic data (ICD modification) versus comprehensive chart review.

Main Results:

• A total of 161 complications were identified across 712 patient records.
• Chart review identified 158 complications (98.1%), while coded data identified only 48 (29.8%).
• Coded data successfully identified all instances of cardiac arrest, respiratory arrest, and pulmonary embolism but missed other significant complications.

Conclusions:

• Coded data accurately captures life-threatening complications but significantly underestimates or misses other adverse events after VH.
• Sole reliance on coded data for outcomes assessment can be misleading.
• Combining coded data with chart review is recommended to enhance the validity of complication identification and outcomes assessment.