Diese Seite wurde automatisch übersetzt und die Genauigkeit der Übersetzung wird nicht garantiert. Bitte wende dich an die englische Version für einen Quelltext.

Changes in Body Composition Following Bariatric Surgery

19. November 2018 aktualisiert von: Peter Nau

Roux-en-y Gastric Bypass Versus Sleeve Gastrectomy - Analysis of the Disparate Effects on Body Composition and Associated Comorbidity Resolution

Obesity is an important public health issue worldwide. In the United States, the percentage of overweight and obese adults increased from 47 and 15%, respectively, to 69 and 36% in the last 40 years. Medically supervised attempts at weight loss are fraught with failures and recidivism. Surgical approaches to this important issue are both durable and effective. The gold standard approach to the surgical treatment of obesity and the attendant medical comorbidities is the laparoscopic roux-en-y gastric bypass (RYGB) and the laparoscopic sleeve gastrectomy (LSG). The mechanisms by which these two operations work and the associated side effects are not completely understood. It is established that the RYGB induces changes in both the fatty tissue mass (FTM) and lean body mass (LBM) post-operatively. This is associated with decreases in bone mineral density, basal metabolic rate, and potentially the ability to maintain weight loss. There is only incomplete information on the influence that the LSG has on body composition. This study proposes an evaluation of the changes in body composition that occurs following these two disparate operations. Using serial measurements by the BodPod and collecting information on the patients' dietary intake, exercise habits and comorbidity resolution, this study will help to better define the influence that the LSG has on body composition. It is hypothesized that the addition of a malabsorptive component will result in increased speed weight loss and overall weight loss which will have a negative impact in the preservation of lean tissue mass for the patient. This information can then be used by bariatric surgeons to better cater the surgical procedure and post-operative plan to the patient's body make up and medical comorbidities.

Studienübersicht

Status

Abgeschlossen

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

Procedures

  • All patients will undergo a bariatric surgery. The decision to undergo weight loss surgery and the operation chosen will both occur independent of and prior to enrollment in the study. The University of Iowa is a Bariatric Center of Excellence with three active, board-certified bariatric surgeons.
  • Serial BodPod examinations will be performed on each patient. The BodPod is a commercially available device produced by Cosmed. It uses whole-body densitometry to determine body composition. To do this, it takes small changes in the volume of air in the BodPod chamber and records the associated changes in pressure. The pressure change typically goes unnoticed and is equivalent to the change in pressure while moving from the first floor to the second floor in an elevator. The entire process takes approximately five minutes with two minutes spent within the machine. The computer will then use mathematical formulas to calculate various body composition values.
  • Laboratory analysis - There is a battery of labs that are ordered in both the pre-operative and post-operative time frame. These labs are ordered independent of the patient's participation in the study. These labs are ordered to assist in the management of the patient's medical comorbidities and to assess for adequate nutritional intake. These labs will also be recorded in the research database to assist in quantifying the degree of resolution of medical comorbidities.
  • Queries on nutritional intake and exercise will be made at each post-operative appointment. The intake of protein is an important variable and may influence maintenance of lean tissue mass. Exercise is an important component of the post-bariatric weight loss program. This also will influence the changes in lean tissue mass.

Studientyp

Beobachtungs

Einschreibung (Tatsächlich)

136

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienorte

  • Vereinigte Staaten
    • Iowa
      • Iowa City, Iowa, Vereinigte Staaten, 52242
        • University of Iowa Hospitals and Clinics

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

18 Jahre bis 65 Jahre (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Ja

Studienberechtigte Geschlechter

Alle

Probenahmeverfahren

Nicht-Wahrscheinlichkeitsprobe

Studienpopulation

The population consists of individuals who meet the NIH consensus statement for the surgical treatment of obesity. These individuals will have a BMI greater than 35 kg/m2 and a medical comorbidity or 40 kg/m2. These subjects will have voluntarily initiated a consultation for bariatric surgery and completed the pre-bariatric surgery weight management program. After failing this program, the patients will undergo surgical consultation for bariatric surgery. It is only after this consultation that the subjects will be approached for enrollement in the study.

Beschreibung

Inclusion Criteria:

  • Individuals will have a BMI greater than 35 kg/m2 and a medical comorbidity or 40 kg/m2
  • Individuals must have voluntarily initiated a surgical consultation for weight loss surgery
  • Individuals must have completed a medical supervised weight loss program

Exclusion Criteria:

  • Failure to adequately complete the pre-screening and educational program necessary to proceed with bariatric surgery
  • Those who are or become pregnant
  • Individuals with severe claustrophobia.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

Kohorten und Interventionen

Gruppe / Kohorte
Intervention / Behandlung
Bariatric Surgery - Gastric Bypass
This population will undergo a laparoscopic roux-en-y gastric bypass
Verfahren: Bariatric Surgery
Patients enrolled will undergo either a laparoscopic Roux-en-y Gastric Bypass or laparoscopic Sleeve Gastrectomy. The determination of which operation performed will be made independent of patients' enrollment in the study.
Bariatric Surgery - Sleeve Gastrectomy
This group will undergo a laparoscopic sleeve gastrectomy
Verfahren: Bariatric Surgery
Patients enrolled will undergo either a laparoscopic Roux-en-y Gastric Bypass or laparoscopic Sleeve Gastrectomy. The determination of which operation performed will be made independent of patients' enrollment in the study.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Body Composition
Zeitfenster: Pre-op, 6 months and 12 months post-op
Using the BodPod machine produced by Cosmed, changes in lean tissue mass and fatty tissue mass following either the laparoscopic roux-en-y gastric bypass or the laparoscopic sleeve gastrectomy will be assessed.
Pre-op, 6 months and 12 months post-op

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Comorbidity resolution
Zeitfenster: pre-op, 6 months post-op, 12 months post-op
Assess for correlations between the changes in body composition and the resolution of medical comorbidities when comparing the LSG and RYGB. This will be done using changes in medication regimen and changes in physical findings and laboratory values such as blood pressure and HbA1c.
pre-op, 6 months post-op, 12 months post-op
Protein intake and lean tissue mass
Zeitfenster: Pre-op, 6 months post-op, 12 months post-op
Assess for correlation between the preservation of lean tissue mass and daily protein intake and whether the type of operation (roux-en-y gastric bypass and sleeve gastrectomy) plays a role.
Pre-op, 6 months post-op, 12 months post-op
Exercise and lean tissue mass preservation
Zeitfenster: Pre-op, 6 months post-op, 12 months post-op
Test for a correlation between the changes in body composition and the amount of physical activity the patient takes part in and whether this is influenced by the type of procedure the patient had (roux-en-y gastric bypass versus sleeve gastrectomy).
Pre-op, 6 months post-op, 12 months post-op

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Peter Nau

Ermittler

  • Hauptermittler: Peter N Nau, MD, MS, University of Iowa

Publikationen und hilfreiche Links

Die Bereitstellung dieser Publikationen erfolgt freiwillig durch die für die Eingabe von Informationen über die Studie verantwortliche Person. Diese können sich auf alles beziehen, was mit dem Studium zu tun hat.

Allgemeine Veröffentlichungen

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn

1. Mai 2014

Primärer Abschluss (Tatsächlich)

1. Oktober 2018

Studienabschluss (Tatsächlich)

1. Oktober 2018

Studienanmeldedaten

Zuerst eingereicht

22. Mai 2014

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

22. Mai 2014

Zuerst gepostet (Schätzen)

28. Mai 2014

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

20. November 2018

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

19. November 2018

Zuletzt verifiziert

1. November 2018

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Schlüsselwörter

Zusätzliche relevante MeSH-Bedingungen

Andere Studien-ID-Nummern

  • 201310819

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .

Klinische Studien zur Bariatric Surgery

Suchen Sie nach ähnlichen Studien

Sponsoren und Mitarbeiter

Krankheiten

Drogeninterventionen

CROs by country

CROs in Vietnam

Bedingungen

Seltene Krankheiten

Drogeninterventionen

Nahrungsergänzungsmittel

Sponsor / Mitarbeiter

Standorte

Abonnieren