NCT01872663

Brief Summary

The aim of this study will be to investigate the effects of using physical therapy resources in the postoperative morbidly obese individuals undergoing gastroplasty. It is believed that the application of these various features of physiotherapy after abdominal surgery may contribute differently in restoring lung function and prevention of pulmonary complications and can thus identify the resources that can contribute more effectively in post-operative bariatric surgery.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
140

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Aug 2013

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

June 4, 2013

Completed
3 days until next milestone

First Posted

Study publicly available on registry

June 7, 2013

Completed
2 months until next milestone

Study Start

First participant enrolled

August 1, 2013

Completed
4 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2013

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2013

Completed
Last Updated

December 3, 2013

Status Verified

December 1, 2013

Enrollment Period

4 months

First QC Date

June 4, 2013

Last Update Submit

December 2, 2013

Conditions

Keywords

Morbid obesityBariatric surgeryPulmonary atelectasisSpirometryContinuos Positive Airway PressurePhysical therapy speciality

Outcome Measures

Primary Outcomes (1)

  • Pulmonary function

    Spirometry was carried out according to the guidelines of the American Thoracic Society (ATS) and European Respiratory Society (ERS) (2005). Three types of maneuver were used in order to evaluate the lung volumes and flows: Slow Vital Capacity (SVC), Forced Vital Capacity (FVC) and Maximum Voluntary Ventilation (MVV). The maneuvers were carried out until three acceptable and reproducible curves were obtained, not exceeding more than eight attempts. The values extracted from each maneuver were selected according to Pereira (2002), and the predicted values calculated using the equation proposed by Pereira et al. (1992) for Brazilians.

    2 days after surgery

Secondary Outcomes (3)

  • Prevalence of atelectasis

    2 days after surgery

  • Thoracoabdominal mobility

    2 days after surgery

  • Peak cough flow

    2 days after surgery

Study Arms (7)

Incentive spirometry (Voldyne®)

EXPERIMENTAL

Individuals will be treated with incentive spirometry, Voldyne Model 5000® in the immediate and the first postoperative day, twice a day, in sessions of 6 sets of 15 repetitions each, with an interval of four hours between them.

Procedure: Incentive spirometry

Continuous positive airway pressure

EXPERIMENTAL

Individuals will be treated with flow generator(Whisperflow, Caradyne, Ireland)and valve PEEP type spring-loaded which remain 10 cmH2O, in the immediate and the first postoperative day, twice a day, in sessions 30 minutes each, with an interval of four hours between them.

Procedure: Continuous positive airway pressureProcedure: Expiratory Positive Airway Pressure

Expiratory Positive Airway Pressure

EXPERIMENTAL

Subjects will be treated with oronasal mask affixed to the face, with the PEEP valve set at 10 cmH2O, in the immediate and the first postoperative day, twice a day, in sessions of 6 sets of 15 repetitions each, with an interval of four hours between them.

Procedure: Continuous positive airway pressureProcedure: Expiratory Positive Airway Pressure

Intermittent positive pressure breathing

EXPERIMENTAL

Subjects will be treated with application of Müller Resuscitator (Engesp®) through a nozzle, using a pressure endotracheal 20-30 cmH2O, refering to 2-3 kgf/cm², adjusted throttle valve oxygen, according to the patient's comfort and the micronebulizer coupled only saline as the diluent. The procedure will be performed in the immediate and the first postoperative day, twice a day, in sessions of 6 sets of 15 repetitions each, with an interval of four hours between them.

Procedure: Continuous positive airway pressureProcedure: Intermittent positive pressure breathing

Bi-level positive airway pressure

EXPERIMENTAL

Individuals will be treated with positive pressure in the BiPAP mode (Bi-level positive airway pressure) in the immediate and the first postoperative day, twice a day, in sessions 30 minutes each, with an interval of four hours between them.

Procedure: Continuous positive airway pressureProcedure: Expiratory Positive Airway PressureProcedure: Bi-level positive airway pressure

Breath Stacking

EXPERIMENTAL

Subjects will be treated with a siliconized mask connected to a unidirectional valve and adapted to the patient's face, allowing only the inspiration and the expiratory limb remains occluded, while the volunteer is instructed to perform successives inspiratory efforts, in the immediate and the first postoperative day, twice a day, in sessions of 6 sets of 15 repetitions each, with an interval of four hours between them.

Procedure: Breath Stacking

Control

NO INTERVENTION

Individuals will be treated with conventional physiotherapy according to the routine service of physiotherapy of the hospital.

Interventions

The use of positive pressure airway seeking the prevention or treatment of hypoxic respiratory failure, improved arterial oxygenation, restoration or maintenance of lung volume reduction and atelectasis, decrease the work of breathing, decreased dyspnea index and increased residual volume.

Bi-level positive airway pressureContinuous positive airway pressureExpiratory Positive Airway PressureIntermittent positive pressure breathing

The volume of incentive spirometry (Voldyne ®) is able to provide increased transpulmonary pressure gradient, which can prevent or reverse atelectasis.

Incentive spirometry (Voldyne®)

The method allowed to obtain a maximum lung expansion with minimal patient compliance.

Breath Stacking

The use of positive pressure airway seeking the prevention or treatment of hypoxic respiratory failure, improved arterial oxygenation, restoration or maintenance of lung volume reduction and atelectasis, decrease the work of breathing, decreased dyspnea index and increased residual volume.

Bi-level positive airway pressureContinuous positive airway pressureExpiratory Positive Airway Pressure

The use of positive pressure airway seeking the prevention or treatment of hypoxic respiratory failure, improved arterial oxygenation, restoration or maintenance of lung volume reduction and atelectasis, decrease the work of breathing, decreased dyspnea index and increased residual volume.

Intermittent positive pressure breathing

The use of positive pressure airway seeking the prevention or treatment of hypoxic respiratory failure, improved arterial oxygenation, restoration or maintenance of lung volume reduction and atelectasis, decrease the work of breathing, decreased dyspnea index and increased residual volume.

Bi-level positive airway pressure

Eligibility Criteria

Age25 Years - 55 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • BMI between 40 and 55 Kg/m²
  • Aged between 25 and 55 years
  • Submitted to Roux-en-Y type gastric by-pass by laparotomy
  • Normal preoperative pulmonary function test

You may not qualify if:

  • Hemodynamic instability
  • Hospital stay longer than three days
  • Presence of postoperative complications
  • Smoking

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Universidade Metodista de Piracicaba (UNIMEP)

Piracicaba, São Paulo, 13400911, Brazil

Location

Related Publications (1)

  • Brigatto P, Carbinatto JC, Costa CM, Montebelo MI, Rasera-Junior I, Pazzianotto-Forti EM. Application of positive airway pressure in restoring pulmonary function and thoracic mobility in the postoperative period of bariatric surgery: a randomized clinical trial. Braz J Phys Ther. 2014 Nov-Dec;18(6):553-62. doi: 10.1590/bjpt-rbf.2014.0054. Epub 2015 Jan 9.

MeSH Terms

Conditions

Pulmonary AtelectasisRespiratory Tract DiseasesPathological Conditions, Signs and SymptomsObesity, Morbid

Interventions

Continuous Positive Airway PressureIntermittent Positive-Pressure Breathing

Condition Hierarchy (Ancestors)

Lung DiseasesObesityOverweightOvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and Symptoms

Intervention Hierarchy (Ancestors)

Positive-Pressure RespirationRespiration, ArtificialAirway ManagementTherapeuticsRespiratory Therapy

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
FACTORIAL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
PhD

Study Record Dates

First Submitted

June 4, 2013

First Posted

June 7, 2013

Study Start

August 1, 2013

Primary Completion

December 1, 2013

Study Completion

December 1, 2013

Last Updated

December 3, 2013

Record last verified: 2013-12

Locations