Unintentionally Retained Foreign Objects: A Descriptive Study of 308 Sentinel Events and Contributing Factors.

Objective: Unintentionally retained foreign objects (URFOs) remain the sentinel events most frequently reported to The Joint Commission. The objective of this study was to describe reports of URFOs, including the types of objects, anatomic locations, contributing factors, and harm, in order to make recommendations to improve perioperative safety.

Methods: A retrospective review was undertaken of events involving URFOs reported to The Joint Commission from October 2012 through March 2018. Inclusion criteria were events meeting Joint Commission definitions of URFO and sentinel event. Exclusion criteria were sponges used intraoperatively and guidewires. Event reports included patients undergoing surgery, child birth, wound care, and other invasive procedures.

Results: A total of 308 events involving URFOs were reported: instruments (102), catheters and drains (52), needles and blades (33), packing (30), implants (14), specimens (6), and other items (71). Many of the instruments were used in minimally invasive or orthopedic surgery. Items were most frequently retained in the abdomen or the vagina. Most URFOs occurred in the operating room. A total of 1,156 contributing factors were identified, most frequently in the categories human factors, leadership, and communication. In the majority of reports, the harm was categorized as unexpected additional care/extended stay. Five patients died as a result of the URFO.

Conclusion: We describe events involving URFOs voluntarily reported to The Joint Commission. The variety of retained items, the departments involved, and the large number of contributing factors demonstrate the complexity of patient care and the need for a multifaceted plan for prevention. We make recommendations based on these findings.