A new systematic review of medical evidence has demonstrated that patients can substantially improve their surgical outcomes through targeted preparation combining diet and exercise before their procedures. The findings, published January 22 in The BMJ, analyzed data from 186 clinical trials involving over 15,500 patients.
The research, led by Dr. Daniel McIsaac from The Ottawa Hospital and the University of Ottawa, found that exercise-based prehabilitation was associated with a remarkable 50% reduction in surgical complications. Dietary interventions alone showed a 38% decrease in complications, while programs combining diet, exercise, and social support reduced complication risks by 36%.
Impact on Hospital Stays and Recovery
The study revealed significant reductions in hospital stays across different prehabilitation approaches. Patients who participated in exercise programs combined with social support spent an average of two fewer days in the hospital. Those following combined exercise and dietary interventions reduced their hospital stays by more than one day.
"If you are willing and able to regularly increase your activity levels and protein intake for a few weeks before surgery, you are likely to experience a noticeably shorter recovery time after surgery," explained Dr. McIsaac, who serves as an anesthesiologist and senior scientist at The Ottawa Hospital.
Historical Context and Current Implementation
The concept of prehabilitation traces its roots to World War II, when the British Army developed programs to enhance the fitness of military recruits. Over the past three decades, the medical community has increasingly focused on adapting these principles to improve surgical outcomes.
While the evidence supporting prehabilitation is compelling, researchers acknowledge implementation challenges across different healthcare settings. "Prehabilitation is very promising, but we still don't know how best to implement it across hospitals and health systems," noted Dr. McIsaac.
Future Directions and Patient Perspectives
Two large-scale clinical trials are currently underway to further validate prehabilitation's effectiveness, with results from one trial at The Ottawa Hospital expected in March. These studies aim to address questions about system-wide implementation and standardization of prehabilitation protocols.
Gurlie Kidd, a patient consultant at The Ottawa Hospital, emphasized the psychological benefits of pre-surgical preparation: "It is very empowering to know that there's something you can do to prepare for surgery that will help your recovery. Patients are hungry for this."
Implementation Considerations
Despite the promising results, researchers caution that most trials were conducted in single hospitals, raising questions about the generalizability of results across different healthcare settings. The medical community is now focused on developing standardized approaches that can work effectively across various hospital systems and patient populations.
