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The Effect of Adding Smartphone-based Platform to the Bariatric Surgery Preparation Process

The Effect of Adding Smartphone-based Platform to the Bariatric Surgery Preparation Process

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04451499
Enrollment
40
Registered
2020-06-30
Start date
2020-12-28
Completion date
2023-02-23
Last updated
2025-12-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bariatric Surgery Candidate, Nutritional and Metabolic Diseases

Keywords

Bariatric surgery, Nutrition, Smartphone-based education platform, Pre-surgery preparation

Brief summary

A randomized controlled trial on 40 bariatric surgery candidates who will be randomized into two arms (app vs. control). All the participants will receive the standard care of 3-6 preparation to bariatric surgery meetings with a dietitian, and only those participants who will assigned to the experimental group will get access to our study's smartphone app site during this period. Evaluations will be performed at baseline, at the end of the intervention phase (after 3-6 meetings as needed) and at 1 and 2 years post-surgery (data will be collected at 1 and 2 years post-surgery by phone calls). Data which will be collected for this study include:demographics and medical data, anthropometrics including body composition analysis, handgrip Strength, physical activity, hydration state, bariatric surgery knowledge questionnaire, quality of life by visual analogue scale, compliance to dietary and lifestyle BS recommendations, readiness for surgery, the subject's experience regarding the smartphone app, surgical data and adherence to post-surgical follow-up by the bariatric team.

Detailed description

A randomized controlled trial on 40 bariatric surgery candidates who will be recruited while attending to the bariatric clinics and by advertisement about the study. Patients will be randomized into two arms (app vs. control) using an online software. All the participants will receive the standard care of 3-6 preparation to bariatric surgery meetings with a dietitian, and only those participants who will be assigned to the experimental group will get access to our study's smartphone app site during this period. The study specific smartphone app site will be based on current literature plus investigators experience and will include a wide knowledge on types of surgeries, dietary guidelines pre- and post-surgery, fluids type and amount, knowledge on supplementation use pre and post-surgery, general dietary knowledge, psychological information, physical activity, recommendation and tips for long-term surgery success, emphasis will be made on long-term follow-up meetings with the bariatric team and practical information on the preparation to the hospitalization process. The smartphone app site will contain video-based modules and encouraging messages. In addition, patients will be encouraged to use the platform to ask questions and receive answers regarding any aspect of the surgery. Evaluations will be performed at baseline, at the end of the intervention phase (after 3-6 meetings as needed) and at 1 and 2 years post-surgery (data will be collected at 1 and 2 years post-surgery by phone calls). Data which will be collected for this study include:demographics and medical data, anthropometrics including body composition analysis, handgrip Strength, physical activity, hydration state, bariatric surgery knowledge questionnaire, quality of life by visual analogue scale, compliance to dietary and lifestyle BS recommendations, readiness for surgery, the subject's experience regarding the smartphone app, surgical data and adherence to post-surgical follow-up by the bariatric team.

Interventions

OTHERSmartphone app

The study specific smartphone app site will be based on current literature plus investigators experience and will include a wide knowledge on types of surgeries, dietary guidelines pre- and post-surgery, fluids type and amount, knowledge on supplementation use pre and post-surgery, general dietary knowledge, psychological information, physical activity, recommendation and tips for long-term surgery success, emphasis will be made on long-term follow-up meetings with the bariatric team and practical information on the preparation to the hospitalization process. The smartphone app site will contain video-based modules and encouraging messages. Patients will be encouraged to use the platform to ask questions and receive answers regarding any aspect of the surgery.

Sponsors

Ariel University
CollaboratorOTHER
Assuta Medical Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Pre-surgery: 18 years old or older, BMI ≥ 40 kg/m² or BMI≥35 kg/m² with comorbidities. * Planned surgery types: LSG, RYGB and OAGB * Reading and speaking Hebrew.

Exclusion criteria

* Previous bariatric surgery. * Planned surgery types: LAGB or BPD-DS. * Patients who underwent more than 1 preparation to bariatric surgery meeting with a dietitian. * Patients with an active psychiatric disorder (uncontrolled) or have other contraindications to bariatric surgery such as addiction to alcohol or drugs. * Diabetic patients taking Insulin. * Patients who do not own a smartphone.

Design outcomes

Primary

MeasureTime frameDescription
Changes in bariatric surgery nutrition-knowledge scoreBaseline and up to 3 months (end of the intervention phase)Bariatric surgery nutrition-knowledge score will be measured by a validated questionnaire

Secondary

MeasureTime frameDescription
Changes in body compositionBaseline and up to 3 months (end of the intervention phase)Body composition will be measured using multi-frequency bioelectrical impedance analysis
Changes in functionalityBaseline and up to 3 months (end of the intervention phase)Handgrip muscle strength-test will be measured by a digital hand dynamometer
Changes in hydration stateBaseline and up to 3 months (end of the intervention phase)Patients will be asked to match the color that best describes their urine color according to a standardized urine color scale
Changes in step countBaseline and up to 3 months (end of the intervention phase)Physical activity will be measured by pedometers
Changes in compliance to dietary and lifestyle bariatric surgery recommendationsBaseline, up to 3 months (end of the intervention phase) and 1 and 2 years post-surgeryPatients will be asked if they kept the recommended behaviors by a questionnaire
Changes in weightBaseline, up to 3 months (end of the intervention phase) and 1 and 2 years post-surgeryWeight loss
Readiness for surgeryUp to 3 months (end of the intervention phase)Patients will be asked to rate their subjectively overall readiness to the surgery from 0-100 using a VAS scale
The subject's experience regarding the smartphone appUp to 3 months (end of the intervention phase)Patients in the intervention arm will be ask about the ease of use
Surgical timeDuring surgerySurgery time in minutes
Adherence to post-surgical follow-up by the bariatric team1 and 2 years post-surgeryPatients will be ask how many meetings they had with the bariatric team since the surgery
Changes in quality of life: VAS scaleBaseline, up to 3 months (end of the intervention phase) and 1 and 2 years post-surgeryPatients will be asked to rate their overall state of health from 0-100 using a VAS scale

Countries

Israel

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026