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NCT04329910

Obesity Alters Lung Mechanics in Robotic Surgery

Completed Last updated 1 April 2020
What this trial tests

trial testing no intervention in Obesity in 99 participants. Completed in 12 July 2019.

Timeline
22 November 2017
Primary endpoint
12 July 2019
12 July 2019

Quick facts

Lead sponsorUniversity of Vermont Medical Center
StatusCompleted
Study typeOBSERVATIONAL
Enrollment99
Start date22 November 2017
Primary completion12 July 2019
Estimated completion12 July 2019
Sites1 location across United States

Drugs / interventions tested

Conditions studied

Sponsor

University of Vermont Medical Center

Who can join

18 and older, any sex, with Obesity or Surgery. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

Intraoperative lung protective ventilation strategies using standardized tidal volumes based on predicted body weight have proven beneficial, but attempts to standardize positive end expiratory pressure (PEEP) settings have not robustly accounted for body habitus or dynamic surgical conditions. Laparoscopic abdominal surgery in Trendelenburg (head-down) is an increasingly common surgical modality that presents a unique physiological challenge to the pulmonary system. In order to delineate the impact of body habitus, pneumoperitoneum, and surgical positioning on intraoperative pulmonary mechanics we conducted an observational study of patients undergoing robotic assisted laparoscopic abdominal surgery in Trendelenburg position. Using esophageal manometry, we partitioned the mechanical properties of the respiratory system into its lung and chest wall components and evaluated the effects of pneumoperitoneum, surgical position, and body mass index (BMI) on transpulmonary pressures, airway and transpulmonary driving pressures, and lung elastance. We hypothesized that increasing BMI would be associated with evidence of increasing atelectasis, increased driving pressures, and elevated lung elastance and that these changes would be exacerbated by pneumoperitoneum and Trendelenburg positioning.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.

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Other trials of no intervention

Trials testing the same drug.

Other recruiting trials for Obesity

Currently open trials in the same condition.

Other University of Vermont Medical Center trials

Trials by the same sponsor.

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Data sources for this page

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Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing