• Panagiotis Kiekkas, Vasiliki Tsekoura, Diamanto Aretha, Adamantios Samios, Evangelos Konstantinou, Michael Igoumenidis, Nikolaos Stefanopoulos, and Fotini Fligou.
• Nursing Department, Western Greece University of Applied Sciences, Patras, Greece.
• J Clin Nurs. 2019 Jun 1; 28 (11-12): 2245-2252.

Aims And ObjectivesTo investigate the associations between nurse staffing and the incidence and severity of hypoxaemia, arterial hypotension and bradycardia of postoperative patients during their postanaesthesia care unit stay.BackgroundNurse understaffing has been associated with adverse patient outcomes in a variety of hospital settings. In the postanaesthesia care unit, nursing shortage is common and can be related to compromised prevention, detection and treatment of adverse events.DesignObservational, single-centre, prospective study that adhered to Strengthening the Reporting of Observational studies in Epidemiology checklist (see Supporting information Appendix S1); 2,207 patients admitted to the postanaesthesia care unit of a tertiary care hospital over a 5-month period were enrolled.MethodsIncidence of hypoxaemia (arterial oxygen saturation <95%), arterial hypotension (systolic blood pressure <90 mmHg) and bradycardia (heart rate <50 beats per minute), along with episode severity, was recorded. Patients were classified into three groups as follows: sufficient staffing, low and high understaffing. Risk for hypoxaemia, arterial hypotension and bradycardia was adjusted according to patient, anaesthesia and operation characteristics.ResultsThe incidence of hypoxaemia was significantly higher in the high understaffing group patients, while the incidence of arterial hypotension was significantly higher in both low and high understaffing group patients, compared to sufficient staffing group ones. In the high understaffing group patients, hypoxaemia and arterial hypotension episodes were of significantly higher severity.ConclusionsThese associations between hypoxaemia and arterial hypotension and postanaesthesia care unit understaffing indicate that care quality and patient safety can be compromised in case patient acuity is not matched with sufficient nursing resources.Relevance To Clinical PracticeHigher incidence of hypoxaemia and arterial hypotension advocates for the prevention of imbalances between patient number and care demands and the number of available nurses.© 2019 John Wiley & Sons Ltd.

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