|
|
Back to 2014 Annual Meeting Abstracts
Comparative Readmission Rates for Bariatric Surgery
John M. Morton, Trit Garg*, Ulysses S. Rosas, Daniel T. Rogan, Harrison Hines, Homero Rivas
Surgery, Stanford University, Stanford, CA
BACKGROUND
Readmissions are an important quality metric for bariatric surgery. Our study aim is compare causes of readmissions, time to readmission, and characteristics of readmitted patients across all three types of bariatric surgery: laparoscopic Roux-en-Y gastric bypass (LRYGB), laparoscopic adjustable gastric band (LAGB), and laparoscopic sleeve gastrectomy (LSG).
METHODS
A total of 1,874 patients undergoing bariatric surgery at a single academic institution over a 10-year period from 2003 to 2013 were included in this retrospective analysis. Preoperative data collected included patients' demographic information, anthropometric features, and biochemical risk factors. Inpatient data such as operation duration and hospital length of stay (LOS) were recorded. Readmission data collected collected, included time to readmission, cause of readmission, and readmission hospital LOS. Data were analyzed by one-way ANOVA and chi-square tests as needed, STATA, release 12.
RESULTS
1,411 (75.3%) patients were LRYGB, 168 (8.96%) were LAGB, and 295 (15.7%) were LSG. A total of 113 patients (6.37%) were readmitted. Mean time to readmission was 124 days (median: 22; IQR: 8, 84). Of all readmissions, 64.6% were within 30 days, 22.1% from 30 to 90 days, 1.77% from 90 to 180 days, and 11.5% from 180 days to one year. Incidence of 30-day readmission was not significantly different across surgery types (LRYGB: 4.18%; LAGB: 2.38%; LSG: 3.39%, p=0.463). Mean hospital LOS for the 30-day readmission was 5.70 days, and did not differ significantly across surgery types. Most common causes of 30-day readmissions for all patients were ulcers/strictures (19.2%), vitamin/nutritional deficiencies or dehydration (17.8%), and bowel obstruction (13.7%). Causes of 30-day readmission did not vary significantly across surgery types, with LRYGB readmissions most commonly due to ulcers/strictures (23.7%), LAGB due to vitamin/nutritional deficiencies or dehydration (50.0%), and LSG due to deep venous thrombosis or pulmonary embolism (30.0%, p=0.050). Patients with 30-day readmission did not have a significantly higher operative time (170 minutes vs. 160, p=0.183), but had a significantly longer postoperative LOS (4.77 days vs. 2.63, p<0.001). There was no significant difference in age, sex, race, insurance type, or BMI.
CONCLUSIONS
Most readmissions after bariatric surgery occur within 30 days, while a measurable proportion occur within a year. There are no significant differences in 30-day readmission rates and causes of 30-day readmissions across surgery types.
Back to 2014 Annual Meeting Abstracts
|
