The effect of pre-anaesthetic assessment clinic: a systematic review of randomised and non-randomised prospective controlled studies

Kristoffersen, E.; Opsal, A.; Tveit, T.; Berg, R.; Fossum, M.

ABSTRACT Objectives: The aim of this systematic review was to examine the effectiveness of pre-anaesthetic assessment clinics (PACs) implemented to improve quality and patient safety in perioperative care. Design: Systematic review. Data sources: The electronic databases CINAHL Plus with Full Text (EBSCOhost), Medline, and Embase (OvidSP) were systematically searched from 1st April, 1996 to 4th February, 2021. Eligibility criteria: The main inclusion criterion was that the study, using empirical quantitative methods, addressed the effectiveness of PACs. Data extraction and synthesis: Titles, abstracts, and full texts were screened in duplicate by two authors. Risk of bias assessment, using the Joanna Briggs Institute critical appraisal checklist for quasi-experimental studies, and data extraction were performed by one author and checked by the other author. Results were synthesised narratively owing to the heterogeneity of the included studies. Results: Seven prospective controlled studies were conducted. Most studies had a high risk of bias. Three studies reported a significant reduction in the length of the hospital stay, and two studies reported a significant reduction in cancellation of surgery for medical reasons when patients were seen in the PAC. In addition, the included studies presented mixed results regarding anxiety in patients. Conclusion: This systematic review demonstrated a reduction in the length of hospital stay and cancellation of surgery when the patients had been assessed in the PAC. There is a need for high-quality prospective studies to gain a deeper understanding of the effectiveness of PACs. PROSPERO registration number: CRD42019137724