The Importance of the First 24 Postoperative Hours: Does Current Evidence Support Short-Stay High-Acuity Care After...

Background: Postoperative admission to critical care facilities is frequently employed following complex abdominal and gynecologic oncology surgery; however, the clinical value of routine short-stay (≤24 h) high-acuity care remains uncertain as the existing evidence is limited, heterogeneous and derived primarily from non-randomized studies. Consequently, the present critical narrative review aims to discuss the rationale for planned short-duration postoperative high-acuity care, summarize the contemporary evidence, and identify priorities for future research. Methods: Relevant studies evaluating planned postoperative admission to critical care facilities for ≤24 h following major abdominal surgery were identified through a targeted review of contemporary literature using a structured search of MEDLINE, Scopus, Google Scholar, the Cochrane Central Register of Controlled Trials (CENTRAL) and ClinicalTrials.gov. Evidence from observational studies investigating intensive care units, high-dependency units, post-anesthesia care units, and advanced recovery pathways was critically synthesized, with particular attention to clinical outcomes, healthcare utilization, and current knowledge gaps. Results: Nine primary studies were included, predominantly observational in design, with the majority lacking a comparative study design, thereby limiting direct evaluation of the clinical effectiveness of planned short-stay postoperative high-acuity care. None of the studies were designed to evaluate a gynecologic oncology population, limiting the direct applicability of the available evidence to this setting. As such, the current evidence is better suited to critical clinical interpretation of the rationale, patient selection, and potential role of postoperative high-acuity care than to drawing definitive conclusions regarding intervention effectiveness. Overall, the available data suggest that planned short-stay high-acuity postoperative care is not consistently associated with reductions in postoperative mortality or overall morbidity but may decrease unplanned intensive care unit admissions in selected patient populations. Most studies reported little or no effect on overall hospital length of stay, whereas increased healthcare costs were primarily observed in capacity-driven or unplanned postoperative critical care pathways. Interpretation of the available literature remains limited by the predominance of observational studies, heterogeneous patient populations, variability in critical care models, and inconsistent outcome reporting. Conclusions: Current evidence does not support routine postoperative admission to critical care facilities following major abdominal surgery, while evidence specifically addressing gynecologic oncology remains insufficient to establish specialty-specific effectiveness. However, planned, time-limited high-acuity postoperative care was not associated with an observed increase in adverse clinical outcomes in the available observational studies and may offer clinical and system-level benefits in selected high-risk patients; these findings should be interpreted cautiously given the limitations of the available evidence. Prospective studies with standardized outcome reporting and clearly defined populations are needed to inform evidence-based perioperative care strategies.