An integrated model of care between general surgery and general medicine rationalizes and enhances the care of older surgical patients.

Backgrounds: There is growing evidence on the benefits of integrated models of care between surgeons and physicians in non-orthopaedic surgery. We implemented a new General Surgery/General Medicine care model, for all emergency General Surgery patients aged 75 years and older. We compared rates of goals of care (GOC) documentation, hospital-acquired complications (HAC), mortality, and hospital length of stay (LOS).

Methods: This is a non-randomized trial, with data collected prospectively in phase 1 (2021-2022), where patients received the traditional standard of care (case-by-case referral to a General Physician), and in phase 2 (2022-2023) where patients received integrated care. Variables were compared between phase 1 and phase 2 using Generalized Linear Models (GLMs).

Results: Five hundred and forty-nine patients, 188 in phase 1 and 361 in phase 2, participated in the study. On univariate analysis, there was a significant increase in patients treated non-surgically in phase 2 (58.5% vs. 69.0%). Patients treated non-surgically had significantly shorter LOS, experienced less HACs (P < 0.001). Other variables did not significantly differ after implementation of the service. The multivariate GLM revealed a significant reduction in admissions with undocumented GOC in phase 2 (P = 0.037).

Conclusion: This study showed that an integrated care model resulted in a greater proportion of patients being treated non-surgically with a comparable rate of HAC and mortality, as well as better documentation of patients' GOC. As the number of older surgical patients will continue to rise, the call for such service to become standard of care in non-orthopaedic surgery is pressing.