Failure of the Obesity Surgery Mortality Risk Score (OS-MRS) to Predict Postoperative Complications After Bariatric Surgery. A Single-Center Series and Systematic Review

García-García, María Luisa; Martín-Lorenzo, Juan Gervasio; Lirón-Ruíz, Ramón; Torralba-Martínez, José Antonio; Garcı́a-López, José-Antonio; Aguayo-Albasini, José Luís

doi:10.1007/s11695-016-2506-4

Cited by 29 publications

(11 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…On the other hand, obstructive sleep apnea (OSA) has become one of the important risks for anesthetic management, especially in bariatric surgery, where the prevalence of OSA is higher and the incidences of postoperative intubation and ventilation are increased [ 7 , 9 ]. In our study, the proportion of patients with the complaint of OSA was greater in group S compared with group L. Accordingly, while most of the patients with OSA have not been diagnosed preoperatively, all of our patients consulted a doctor in the department of sleep medicine prior to undergoing bariatric surgery.…”

Section: Discussionmentioning

confidence: 99%

Factors affecting the early post-operative prognosis in morbidly obese surgical patients after laparoscopic sleeve gastrectomy – a retrospective cohort study

et al. 2017

View full text Add to dashboard Cite

BackgroundThe number of morbidly obese patients who have undergone bariatric surgery has been gradually increasing in Japan. These obese patients are often complicated with metabolic, cardiac, respiratory, and other diseases. The aim of this study was to analyze the perioperative clinical course in a retrospective cohort with respect to the utility of anesthesia management in order to prevent longer hospital stays after surgery.FindingsSixty-seven morbidly obese patients who had undergone sleeve gastrectomy were divided into two groups, based upon the duration of postoperative hospital stay; group S was comprised of the patients who were discharged within 5 days after surgery (n = 57) and group L was comprised of those who were discharged after 6 days or more (n = 10). The mean duration of the hospital stay was 4.8 ± 0.4 days and 7.8 ± 1.4 days in groups S and L, respectively. Multivariate logistic regression analysis showed that prolonged anesthesia was a predictor of a longer postoperative hospital stay (p < 0.05). While the difference in BMI was not significantly different, the percentage of patients with BMI ≥ 50 was 12 and 30% in groups S and L, respectively.ConclusionsLonger duration of anesthesia affected the duration of postoperative hospital stay in morbidly obese patients undergoing sleeve gastrectomy. In addition, patients with BMI ≥ 50 might be at risk of longer hospitalization after surgery.

show abstract

Section: Discussionmentioning

confidence: 99%

Factors affecting the early post-operative prognosis in morbidly obese surgical patients after laparoscopic sleeve gastrectomy – a retrospective cohort study

et al. 2017

View full text Add to dashboard Cite

show abstract

“…[8][9][10][11] Several authors have studied the OS-MRS relation with surgical complications, with contradicting results: while Sarela et al 12 and Lorente et al 13 have found an association with complications rate, several others have not replicated these results. [14][15][16][17] However, the evidence regarding the association of OS-MRS with hospital length of stay (LOS) is still scarce, and the authors of this article could only found one study in which both OS-MRS and POSSUM scores were found to be moderately accurate for predicting inpatient stay longer than 3 days. 16 In this study 474 patients submitted to gastric bypass surgery were retrospectively audited.…”

Section: Original Researchmentioning

confidence: 99%

OS-MRS as a predictor of hospital length of stay – a retrospective audit of patients submitted to elective gastric bypass surgery

Miguel

Oliveira

Ferreira

et al. 2020

APIC

View full text Add to dashboard Cite

Background: Obesity is an important public health problem, with a high prevalence worldwide. Bariatric surgery emerged as an effective therapeutic tool, with improvement of quality of life and a decrease in all-cause mortality. Obesity Surgery Mortality Risk Score (OS-MRS) predicts 90-day mortality after bariatric surgery, but its association with hospital length of stay (LOS) has not been elucidated. We aimed to evaluate the association between OS-MRS and LOS after gastric bypass surgery. Methodology: We retrieved clinical and demographic data of 474 patients who had been submitted to gastric bypass surgery for this retrospective audit at Hospital de Santo António, Centro Hospitalar Universitário do Porto, Porto, (Portugal), between January 2010 and May 2015. The patients were classified as Class A, B or C. The primary goal was to evaluate whether there was an association between OS-MRS and LOS after gastric bypass surgery. The study of the relationship between duration of surgery (DS) and LOS was also performed. Results: After application of exclusion criteria, 402 patients were included in the statistical analysis (172 patients Class A, 187 Class B and 43 Class C). Patients classified as OS-MRS Class A had a significant shorter LOS (3.5 ± 2.3 days) than patients classified as Class B (4.2 ± 5.1 days) and Class C (5.7 ± 12.6 days; p<0.001). A significant positive correlation between DS and LOS was observed, although the degree of that correlation was weak (ρ=0.203; p=0.001). Conclusion: A positive association of OS-MRS with hospital length of stay and duration of surgery was observed; the patients with higher OS-MRS classes had longer length of stay in the hospital and longer duration of surgery. Moreover, longer length of stay was slightly associated with longer surgery duration. Citation: Miguel DS, Ramos P, Oliveira J, Ferreira C, Cruz F. OS-MRS as a predictor of hospital length of stay – a retrospective audit of patients submitted to elective gastric bypass surgery. Anaesth pain intensive care 2020;24(1):_ DOI: https://DOI.org/10.35975/apic.v2i1. Received – 29 November 2019; Reviewed – 24 January, 8 February 2020; Revised – 24 January 2020; Accepted – 8 February 2020;

show abstract

“…Though these studies state that OS-MRS is effective in determining morbidity for morbid obesity surgery, a single-center series and systematic review by García-García, et al in 2016 reported the OS-MRS was not more effective than Clavien-Dindo in determining postoperative adverse events and complications. This article had a sleeve gastrectomy case number of 18 (5.6%) [9]. Another article reporting 233 laparoscopic sleeve gastrectomy cases stated OS-MRS was not a useful tool in predicting risk of perioperative morbidity after bariatric procedures [10].…”

Section: Grant Support and Financial Disclosuresmentioning

confidence: 99%

OR-MRS Cannot be used for Morbidity in Laparoscopic Sleeve Gastrectomy

Kucur¹

2019

J Obes Weight-Loss Medic

View full text Add to dashboard Cite

Introduction: A reliable method to predict postoperative risks may improve surgical risks and ensure preventive precautions to reduce complication risks. American Society of Anesthesiologists (ASA) is a common method to determine surgical risk, but at first glance it appears to be insufficient to determine the risk of morbid obesity surgery. The greatest advantage of Obesity Surgery Mortality Risk Score (OS-MRS) is the use of five easily obtained clinical variables. A possible disadvantage is that it may only show mortality. It was reported that OS-MRS can be used for morbidity. However, there are inconsistent results. In this study, we aimed to compare the preoperative OS-MRS results with postoperative Clavien-Dindo for ASA III patients undergoing laparoscopic sleeve gastrectomy and to show the predictive power of the OS-MRS for morbidity in this group. Material-Method: The study retrospectively included patients who underwent laparoscopic sleeve gastrectomy for morbid obesity from 2014 to 2018. All patients had OS-MRS scores recorded as clinical protocol in their files. The morbidity within 90 days in files was assessed according to the Clavien-Dindo classification. Results: Values remaining under the curve may be used to interpret OS-MRS points (p < 0.05). The cutoff value for OS-MRS points according to complications was calculated as 1. OS-MRS points above 1 may be associated with complications. The variable of OS-MRS points may be used as a parameter for complication cutoff. However, as the area under the curve (AUC) was close to 0.5, it is necessary to question the reliability. Conclusion: OS-MRS may be used for mortality in laparoscopic sleeve gastrectomy; however, it is unreliable to determine morbidity.

show abstract

Failure of the Obesity Surgery Mortality Risk Score (OS-MRS) to Predict Postoperative Complications After Bariatric Surgery. A Single-Center Series and Systematic Review

Abstract: In our study, the OS-MRS is not correlated with the appearance of early complications or mortality. Future studies must focus on systems for predicting the appearance and severity of postoperative complications classified according to the Clavien-Dindo system, and not only on mortality.

Cited by 29 publications

References 28 publications

Factors affecting the early post-operative prognosis in morbidly obese surgical patients after laparoscopic sleeve gastrectomy – a retrospective cohort study

Factors affecting the early post-operative prognosis in morbidly obese surgical patients after laparoscopic sleeve gastrectomy – a retrospective cohort study

OS-MRS as a predictor of hospital length of stay – a retrospective audit of patients submitted to elective gastric bypass surgery

OR-MRS Cannot be used for Morbidity in Laparoscopic Sleeve Gastrectomy

Contact Info

Product

Resources

About