CAPNOGRAPHY DURING ENDOSCOPY – A VALUE-BASED HEALTHCARE PILOT IN A HIGH-VOLUME GASTROENTEROLOGY PRACTICE
18 March 2019 (online)
As part of a quality-improvement initiative in a high-volume university hospital GI department, the study evaluated the incidence of respiratory-related adverse events (AEs) and interventions occurring during sedation using World SIVA task force consensus definitions and the impact of capnography monitoring on these.
We compared data for patients admitted for scheduled procedures performed in the department with standard of care monitoring (control) to the data gathered for patients sequentially admitted for scheduled procedures that were monitored after full training with capnography both during the procedure and in recovery (intervention). Events were recorded during both the procedure and the recovery period. Collected data included the ASA risk score, type of procedure, procedure duration, clinician ID and any indicated SIVA defined AEs and interventions that occurred. Incidence rates and relative risks for events and interventions were determined. The primary quality improvement endpoint was the change in total incidence of mild oxygen desaturation, severe oxygen desaturation, bradycardia, and tachycardia with capnography monitoring.
Between February 2018-June 2018, 1,092 control and 1,044 intervention patients were included. In the control group there were on average 11.45 AEs per 100 procedures. In the intervention group there were on average 5.08 AEs per 100 procedures. The absolute difference between arms was -6.37 (95% [CI], -8.7 to -4.1) AEs per 100 procedures representing a 55.69% reduction (p = 0.0001). The RR for a patient experiencing the primary outcome with use of capnography was: 0.43 (95% CI, 0.31 to 0.58). Nine escalations of care were reported in the control group with none reported in the intervention group. The relative risks of experiencing both AEs and interventions during recovery were reduced significantly in the capnography arm (0.17 and 0.15, respectively).
Capnography significantly reduced the incidence of respiratory AEs in real life use at a university hospital GI procedure suite.