Primary care utilization within a year of emergency general surgery was significantly associated with lower mortality up to 180 days later for older adults, based on data from more than 100,000 individuals.
Although previous research has shown the benefits of routine health and preventive care visits for surgery patients, many individuals in the United States live in areas with a shortage of primary care providers, wrote Sanford E. Roberts, MD, of the University of Pennsylvania, Philadelphia, and colleagues. The effect of primary care use on adverse outcomes after emergency general surgery, including mortality, remains unknown, they said.
In a study published in JAMA Surgery the researchers reviewed data from 102,384 Medicare patients aged 66 years and older who underwent emergency general surgery (EGS) between July 1, 2015, and June 30, 2018. Participants were classified into five EGS categories: colorectal, general abdominal, hepatopancreatobiliary, intestinal obstruction, and upper gastrointestinal. The mean age of the participants was 73.8 years; 8.4% were Black, 91.6% were White.
The primary outcome was mortality in hospital and at 30, 60, 90, and 180 days. In the year before hospitalization for EGS, 88,340 patients (86.3%) had visited a primary care physician.
After adjusting for multiple risk factors, the overall risk of in-hospital mortality was 19% lower for patients who had a history of primary care visits than for those without prior-year exposure to primary care (odds ratio, 0.81).
Mortality at 30 days was 27% lower overall in patients with primary care exposure, compared with those without primary care exposure (OR, 0.73). This trend continued at 60 days (OR, 0.75), 90 days (OR, 0.74), and 180 days (OR, 0.75); mortality rates at each time period were similar for Black and White patients with primary care exposure, both groups had reduced mortality, compared with those without primary care exposure.
However, when analyzed by race, in-hospital mortality was not significantly different for Black patients with and without primary care exposure (OR, 1.09), but in-hospital mortality was 21% less in White patients with primary care exposure (OR, 0.79). Interactions between race and primary care exposure related to mortality were not significantly different at any of the follow-up time points of 30, 60, 90, and 180 days.
“These findings suggest that primary care may be exerting a protective effect on postoperative morbidity and mortality,” the researchers wrote in their discussion. “This protective effect could be mediated through several different paths, such as identifying and managing a patient’s comorbidities, medically optimizing patients preoperatively, earlier detection of the primary EGS condition leading to early referral to treatment, and encouraging better lifestyle decisions,” they said.
The findings were limited by several factors including the retrospective design and inability to extract clinical data from a claims database, the researchers noted. Other limitations included potential confounding of unmeasured factors such as the other beneficial health behaviors often associated with seeking primary care.
Patients who avoid primary care may be more likely to delay presentation to the emergency department, which might promote poorer postoperative outcomes, the researchers said. Consequently, surgeons should consider primary care exposure in preoperative assessment, and perform a more comprehensive presurgical assessment as needed, the researchers said.
More studies are needed to examine trends in racial groups, but the results of the current study suggest that primary care provides similar benefits for Black and White individuals, and therefore could help reduce health disparities, they concluded.