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LSG associated with lower readmission rates than LRYGB in outpatient bariatric surgery settingsSleeve gastrectomy shows lower readmission rates after bariatric surgery

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Key Takeaway
Note that LSG is associated with significantly lower readmission rates than LRYGB in outpatient bariatric surgery settings.

This meta-analysis evaluated outcomes for patients undergoing primary bariatric surgery, specifically laparoscopic sleeve gastrectomy (LSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB). The study population consisted of 1581 patients who underwent these procedures with same-day discharge (SDD) and remote monitoring (RM). The analysis aimed to compare the safety and efficacy of these two common surgical interventions in an outpatient framework.

The primary outcome measured was the readmission rate. For the specific subgroup of patients managed with both same-day discharge and remote monitoring, the reported readmission rate was 3.35% (95% CI, 2.57%-4.36%). When comparing the two surgical techniques directly, LSG demonstrated a significantly lower readmission rate of 2.66% compared to LRYGB, which had a readmission rate of 5.28% (P =.012).

Secondary outcomes included major complications and overall complication rates. Major complications, defined as Clavien-Dindo grade ≥3, were reported at 1.58%. This rate was found to be comparable between the LSG and LRYGB procedures. The overall complication rate for both surgical types was reported as 3.80%.

Safety and tolerability data indicate that both procedures are viable in outpatient settings. While LRYGB had a higher readmission rate than LSG, meta-regression analysis suggested these differences were not necessarily due to inherent surgical safety risks. Instead, the higher readmission rates in the LRYGB group were driven by manageable functional issues, specifically dehydration.

These findings contribute to the understanding of outpatient bariatric surgery protocols. While both procedures are supported by favorable safety profiles, the data suggests that LSG may offer a more stable profile regarding immediate post-operative readmissions in an outpatient model compared to LRYGB. However, because the underlying studies were observational, these results indicate an association between procedure type and readmission rather than a direct causal link.

Methodological limitations include the reliance on observational data for the meta-analysis, which can introduce potential biases. Additionally, while the difference in readmissions was statistically significant (P =.012), the underlying causes were identified as manageable functional issues like dehydration rather than surgical complications. These results suggest that clinical management of LRYGB patients may require specific focus on hydration to mitigate avoidable readmissions.

Clinically, these findings imply that both LSG and LRYGB are viable options for same-day discharge programs. Providers should note that while LSG is associated with lower readmission rates, the higher rate in LRYGB patients is often manageable through proactive monitoring of functional issues like dehydration. Future research may clarify whether specific post-operative protocols can further equalize readmission rates between these two surgical techniques.

How this fits prior evidence

How this fits prior evidence This meta-analysis addresses a gap in the clinical management of outpatient bariatric surgery by comparing LSG and LRYGB outcomes. While previous coverage noted that bariatric surgery is associated with a significantly lower incidence of gallbladder cancer in people living with obesity, this study focuses on the immediate post-operative safety and readmission rates for both procedures in an outpatient setting.

For many people living with obesity, bariatric surgery is a life-changing step toward better health. Because these surgeries are major procedures, patients often worry about what happens immediately after they leave the operating room. They want to know if they can go home safely and how likely they are to need to return to the hospital for complications or issues that arise during recovery.

A large review of data from 1,581 patients helped clarify these risks. The researchers looked at two common types of surgery: laparoscopic sleeve gastrectomy (LSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB). Both procedures are performed in settings where patients can be sent home the same day with remote monitoring to track their progress from afar.

The findings showed that while both surgeries were generally safe, there was a measurable difference in hospital readmissions. Patients who had the sleeve gastrectomy (LSG) had a lower readmission rate of 2.66 percent. In contrast, patients who underwent the gastric bypass (LRYGB) had a higher readmission rate of 5.28 percent. This means that, statistically, more people undergoing the bypass procedure ended up needing to go back to the hospital shortly after their initial surgery compared to those who had the sleeve.

However, it is important to look at why these numbers differ. The researchers found that the higher readmission rate for the gastric bypass was not necessarily due to dangerous surgical failures or major complications. Instead, many of these cases were caused by manageable functional issues, such as dehydration. Both types of surgery showed similar rates of major, serious complications (about 1.58 percent). This suggests that while one procedure might lead to more trips back to the hospital, those trips are often for manageable reasons rather than signs of a failed operation.

It is important to keep these findings in perspective. Because this was a meta-analysis of observational studies, it shows an association between the type of surgery and readmission rates, but it does not prove that one surgery is inherently more dangerous than the other. Every patient's body reacts differently to surgery. For now, this means that both procedures are considered safe options for outpatient care with remote monitoring. Patients should talk to their doctors about which procedure fits their specific health needs and how they can best manage recovery at home.

What this means for you:
Sleeve gastrectomy showed lower readmission rates than gastric bypass, though most extra hospital visits were manageable.

Study Details

Study typeMeta analysis
Sample sizen = 1,581
EvidenceLevel 1
PublishedAug 2026
View Original Abstract ↓
BACKGROUND: Bariatric surgery, primarily laparoscopic sleeve gastrectomy (LSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB), is an effective treatment for obesity. As the demand for healthcare increases, same-day discharge (SDD) supported by remote monitoring (RM) is being explored to optimize resources without compromising safety. This systematic review and meta-analysis aimed to evaluate the safety and clinical outcomes of SDD with RM for primary bariatric surgery. METHODS: Following PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines and PROSPERO registration (CRD420251124540), a comprehensive search was conducted across PubMed, Scopus, and Web of Science. Six observational studies involving 1581 patients (LSG: 1164; LRYGB: 417) met the inclusion criteria. Outcomes included pooled readmission and complication rates, which were analyzed using a generalized linear mixed model. RESULTS: The overall pooled readmission rate for the RM subgroup was 3.35% (95% CI, 2.57%-4.36%). Subgroup analysis revealed a significantly lower readmission rate for LSG (2.66%) than for LRYGB (5.28%, P = .012). Major complications (Clavien-Dindo grade ≥3) were rare at 1.58% and were comparable between procedures. The overall complication rate was 3.80%. Meta-regression indicated that surgery type was not a significant moderator for major or overall complications, suggesting that the higher readmission rate for LRYGB was largely driven by manageable functional issues, such as dehydration. CONCLUSION: Both LSG and LRYGB appear to have favorable safety profiles in an outpatient setting with RM, with LSG demonstrating an advantage of significantly fewer readmissions in the early postoperative period.
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