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Acceptability and Feasibility of a Preoperative Very Low Calorie Diet Intervention on Surgical Weight Loss Outcomes (SAFETY)

NCT06183034 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 30

Last updated 2024-02-28

No results posted yet for this study

Summary

Class 4 obesity is defined as a BMI ≥50Kg/m2, representing approximately ≥150 pounds of excess weight. For patients with Class 4 obesity, metabolic and bariatric surgery (MBS) is the only effective treatment. However, MBS is associated with a higher rate of perioperative morbidity and mortality for patients with Class 4 obesity. Additionally, more patients with Class 4 obesity experience suboptimal weight loss. For patients with Class 4 obesity, preoperative weight loss can reduce the technical difficulty of surgical procedures, rendering MBS safer. Preoperative weight loss may also decrease visceral adipose tissue and liver volume as well as reduce weight-related comorbidities.

A very low-calorie diet (VLCD), which involves restricting caloric intake to approximately 800 kcal/day, is one strategy to help patients achieve weight loss preoperatively. Although studies show that a VLCD prior to MBS yields weight loss, reduces liver volume and rates of perioperative complications, most preoperative VLCDs are short (2-8 weeks) with variable adherence. To date, no study has systematically assessed the feasibility and acceptability of a standard 12-week VLCD among patients with BMI ≥50 pursuing MBS. No study has evaluated postoperative weight loss among patients who have undergone a preoperative VLCD.

This study will be a single arm trial designed to test the feasibility, acceptability, and preliminary efficacy of a 12-week VLCD program prior to sleeve gastrectomy (SG) and associated weight loss up to 1 year following MBS. The investigators will enroll 24 patients aged 18-70, with a BMI≥50Kg/m2, and are approved for SG. Participants will consume up to 5 meal replacement protein shakes and 2 cups of vegetables daily for 12 weeks. Participants will attend weekly in-person office visits with the clinicians at the Hartford Hospital Medical and Surgical Weight Loss Center in Glastonbury, CT to assess weight loss, physical and mental health, feasibility and acceptability of and adherence to the VLCD. The investigators hypothesize that a 12-week VLCD is feasible in this population, defined as ≥70% (18 out of 24 participants) completing the program. The investigators hypothesize that better attendance at the weekly visits and higher adherence to the diet recommendations will provide greater weight loss preoperatively and percent total weight loss at the completion of VLCD, on the day of MBS, and at 3, 6, and 12 months post-surgery. Findings from this study may lead to additional projects that aim to develop and implement an optimal pre-surgery and post-surgery clinical care model for bariatric patients.

Conditions

Interventions

OTHER

Very Low Calorie Diet

Participants will receive a very low calorie diet as described in the arm/group

Sponsors & Collaborators

  • Hartford Hospital

    lead OTHER

Study Design

Allocation
NA
Purpose
OTHER
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
70 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-03-05
Primary Completion
2025-10-31
Completion
2025-12-30

Countries

  • United States

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06183034 on ClinicalTrials.gov