Bariatric Surgery Candidate Clinical Trial
Official title:
Pre-operative Inspiratory Muscle Training Effectiveness and Pulmonary Function in Patients Submitted to Bariatric Surgery
Obesity is defined as a body mass index greater than or equal to 30 kg / m2 and represents a public health problem that affects the world population. It is associated with a higher frequency of cardiovascular, metabolic diseases, and respiratory morbidities, which affect the quality of life of patients. Its treatment comprises different strategies, however, due the conventional treatments, surgical treatment has been the most sought after today. Objectives: To evaluate the effectiveness of preoperative inspiratory muscle training in the evolution of respiratory muscle strength in patients undergoing bariatric surgery. Methodology: Randomized clinical trial. All patients will be assessed in the pre operative period and randomized into 2 groups: control group and intervention group. The main variables are maximum inspiratory and expiratory muscle strength (MIP and MEP), peak cough flow (PCF) and pain. Control group will perform proposed respiratory physiotherapy, aerobic exercises and use of incentive inspirometry, the intervention group will perform proposed physiotherapy, aerobic exercises and use of Powerbreathe for inspiratory muscle training. Both groups will perform 10 non consecutive face-to-face physiotherapy sessions ( up 30 days before surgery). After the surgical intervention, they will be evaluated on the first and 30th postoperative days in relation to the same variables and pulmonary complications. Statistical Analysis: Sample calculation performed through a previous study: 42 patients per group. After the intervention, they will be evaluated on the second postoperative day for days of hospitalization and pulmonary complications. Statistical Analysis: Sample calculation performed through a previous study: 42 patients per group. After the intervention, they will be evaluated on the second postoperative day for days of hospitalization and pulmonary complications. Statistical Analysis: Sample calculation performed through a previous study: 42 patients per group. Categorical variables will be summarized in absolute and relative frequencies (percentages). Information regarding numerical variables will be expressed as means, standard deviations or medians, and interquartile range, depending on the distribution of the variable. All variables will be tested in relation to their distribution. To analyze the results between groups will be used the mixed linear models and for intragroup analysis, two-way ANOVA (time and group) for the following variables: MIP and MEP, PCF and pain. Expected results: Preoperative inspiratory muscle training can maintain/improve respiratory muscle strength until the moment prior to surgery, thus better preparing the patient for the condition of surgical stress, in addition to decreasing the incidence of pulmonary complications during the hospitalization period and / or in the 30 postoperative days.
Status | Recruiting |
Enrollment | 84 |
Est. completion date | June 7, 2024 |
Est. primary completion date | July 5, 2023 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years to 70 Years |
Eligibility | Inclusion Criteria: - Accept to participate in the study - Age over 18 years - Any gender - Elective bariatric surgery Exclusion Criteria: - Mechanical ventilation for more than 48 hours after the surgical procedure - Hemodynamic instability at the time of the first evaluation and persistent in the evaluation after 1 hour |
Country | Name | City | State |
---|---|---|---|
Brazil | Centro de Reabilitação Stimullus | Pouso Alegre | Minas Geraes |
Lead Sponsor | Collaborator |
---|---|
Universidade Cidade de Sao Paulo |
Brazil,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change over time in Inspiratory muscle strength - maximum inspiratory pressure (MIP) | To measure MIP, patients will be instructed to perform a maximal inspiratory effort from residual volume (RV), using a previously calibrated analog manovacuometer (range +/- 300cmH20). The highest value obtained after three repetitions will be recorded. The obtained values will be compared to the predicted values ( Predicted equations by Neder et al.) | All patients will be assessed at baseline ( protocol admission), in the 10th session of preoperative protocol ( average 30 days), 1st postoperative day ( average 7 days after the last pre op.session) and 30th postoperative day ( 30 days after surgery) | |
Primary | Change over time in Expiratory muscle strength - maximum expiratory pressure (MEP) | To measure MEP, patients will be instructed to perform a maximal expiratory effort from total lung capacity (TLC) using a previously calibrated analog manovacuometer (range +/- 300cmH20). The highest value obtained after three repetitions will be recorded. The obtained values will be compared to the predicted values ( Predicted equations by Neder et al.) | All patients will be assessed at baseline ( protocol admission), in the 10th session of preoperative protocol ( average 30 days), 1st postoperative day ( average 7 days after the last pre op.session) and 30th postoperative day ( 30 days after surgery) | |
Primary | Change over time in Peak Cough Flow (PCF) | For PCF measurements, you will be asked to the patients to cough with maximum effort after a deep inspiration using a peak flow meter. The highest value obtained from three repetitions will be recorded. The obtained values will be compared to the predicted values for healthy Brazilian population. | All patients will be assessed at baseline ( protocol admission), in the 10th session of preoperative protocol ( average 30 days), 1st postoperative day ( average 7 days after the last pre op.session) and 30th postoperative day ( 30 days after surgery) | |
Secondary | Change over time in Pain | The pain will be measured by visual numeric scale (VNS). The scale ranges from 0 to 10, with 10 being the worst possible pain. | All patients will be assessed at baseline ( protocol admission), in the 10th session of preoperative protocol ( average 30 days), 1st postoperative day ( average 7 days after the last pre op.session) and 30th postoperative day ( 30 days after surgery) |
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