Weekday vs. weekend admission for STEMI does not impact in-hospital mortality

SAN DIEGO — In an analysis of the National Inpatient Sample database, in-hospital mortality for STEMI did not differ based on weekday vs. weekend hospital admission.

Among 827,196 patients with STEMI admitted for STEMI from 2007 to 2011, 595,452 were admitted on a weekday. The rate of in-hospital mortality was 6.9% during weekday admissions vs. 7% during weekend admissions (P = .553). Rates of PCI did not differ between admission day.

Researchers also analyzed admissions based on time of year. The number of STEMI admissions by month did not differ. However, in-hospital mortality appears higher during winter months. The rate of in-hospital mortality ranged from 6% to 6.7% (P < .001) from June to August compared with a range of 7.2% to 7.6% from December to February (P < .001). The average in-hospital mortality was 6.43% for summer months, 6.86% for fall months, 6.97% for spring months and 7.43% for winter months. The researchers noted that “the clinical significance of this seasonal variation is undetermined.”

The data were reported in an abstract at the Society for Cardiovascular Angiography and Interventions Scientific Sessions.

“Our study is the largest of its kind to look at the effect of admission day/month on STEMI outcomes, and our results show a higher mortality rate in the winter months,” Chowdhury Ahsan, MD, from the University of Nevada Las Vegas School of Medicine, said in a press release. “Patients included in this study transferred locations at some point while receiving care, which only stresses the vital importance of having an interconnected health care system to decrease mortality rates during winter months and delivery optimum patient care.”

Reference:

Dong A, et al. Poster Session I. Presented at: Society for Cardiovascular Angiography and Interventions Scientific Sessions; April 25-28, 2018; San Diego.

Disclosures: The researchers report no relevant financial disclosures.