11th EORNA Congress Valencia, Spain | 16 - 18 May 2024 ePoster Guided View 38 Objectives: To analyse the influencing factors of inadvertent hypothermia in patients undergoing off-pump cardio hybrid operation, construct a nomogram and a CART decision tree model respectively, and compare the predictive performance of the two models. Methods: A total of 429 cases of off-pump cardio hybrid operation patients’ data were collected from January 2019 to December 2022 in the hospital, and meaningful influencing factors were screened out using one-way analysis, and influencing factors without multicollinearity among them were included in stepwise multifactorial regression analysis, The nomogram and the CART decision tree model were constructed respectively.Accuracy,precision,recall,F1 value and AUC are used to compare the performance of the two models. Results: Inadvertent intraoperative hypothermia occurred in 310 of 429 patients, with an incidence of 72.26%. The accuracy of the nomogram model was 0.80, precision was 0.75, recall was 0.96, F1 value was 0.84, and AUC was 0.91.The accuracy of the CART decision tree model was 0.87, precision was 0.93, recall was 0.89, F1 value was 0.91, and AUC was 0.92. Conclusion: The AUC of the CART decision tree model was significantly higher than that of the nomogram model (P＜0.001), which can provide a reference for the development of preventive measures of inadvertent intraoperative hypothermia for nursing staff. 493 Patients Recovery Room discharge and modified Aldrete score: an observational study about timing in a multidisciplinary surgical single centre. Nicolò Panattoni1, Emanuele DI Simone2, Alessandro Spano3, Aurora De Leo4, Ylenia Giuliani5, Fabrizio Petrone5 1IRCCS Istituti Fisioterapici Ospitalieri, Nursing Research Unit IFO, Rome, Italy, 2Sapienza University of Rome, Department of Clinical and Molecular Medicine, 3IRCCS Istituti Fisioterapici Ospitalieri, Nursing Research Unit IFO, 4IRCCS Istituti Fisioterapici Ospitalieri, Nursing Research Unit IFO, 5IRCCS Istituti Fisioterapici Ospitalieri, Nursing, Technical, Rehabilitation, Assistance and Research Direction Background: Implementing an objective scoring scale during the patient’s post-operative awakening phase, as through the modified Aldrete Score (mAS), could increase safety in the patient’s discharge from the Recovery Room (RR) and the relative transfer to the ward. Objectives: The study aims to report the discharge time from the RR through the final scores measured by the mAS. Methods: The study has an observational design and was conducted in September 2022 and authorized by the Local Ethics Committee (IRCCS IFO protocol n. 1735/22 – July 12th, 2022). Patients were enrolled consecutively in the postsurgical phase, to whom the mAS was administered. The exclusion criteria were related to the paediatric population, emergency surgery, and expected postoperative course in the intensive care unit. Results: The sample (165 patients) was composed of 64.8% (n=107) female and 35.2% (n=58) male (mean age of 59.35 SD ±16.9). The body mass index calculated was normal for 55.2% (n=91), overweight for 33.3% (n=55), and obese for 11.5% (n=19). The surgical approaches (principally urological and breast) were “open” for 57% (n=94), 17% (n=28) robotic surgery and laparoscopic for 26% (n=28). About the ASA score, 73.9% (n=122) was classified as ASA 2. Most interventions lasted up to 2 hours (73.9% n=122), and the general anaesthesia approach was used for 84.2% (n=139). The main results regarding RR discharge timing and mAS are summarised in the following table. Conclusion: 84.9% (n=140) of patients were discharged from RR after 45’, scoring 10. Likely, these patients reached the threshold of dischargeability (score ≥8) as early as 5 minutes after awakening in RR. These results, although with limitations, may suggest how systematic and routine use of the mAS at postoperative awakening could significantly reduce the time patients stay in RR while still ensuring patient safety, as known in the literature.
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