Tthis study states that the Posthospital syndrome (PHS) is an acquired, transient period of health vulnerability after a hospital admission for acute illness. It is characterized by physiologic deconditioning secondary to stressors from disruption in circadian rhythm, depletion of nutritional and physiologic reserve as well as the pain and discomfort associated with hospitalization. PHS is reported as an independent risk factor for readmission and adverse postoperative outcomes. The aim of this study is to investigate whether preoperative hospitalization affects outcomes of elective endovascular repair of abdominal aortic aneurysm (EVAR).

The Healthcare Cost and Utilization Project State Inpatient Database for California (2009-2011) were queried using International Classification of Disease Codes, Ninth Edition, codes of 441.4 (abdominal aneurysm without mention of rupture), 397.1 (EVAR with graft), and 397.8 (EVAR with branching or fenestrated graft). PHS exposure is defined as any inpatient admission 30 or fewer days before elective EVAR. Primary outcomes are all-cause mortality and overall complications. Secondary outcomes include length of stay (LOS), 30-day readmission, and hospital charge. A total of 6155 patients were identified. of which 327 patients (5.6%) had more than one episode of hospital admission 30 days or less before elective EVAR.

Reference link- https://www.jvascsurg.org/article/S0741-5214(20)30182-8/fulltext