Quantification of expiratory reserve volume during the technique of slow and complete exhalation with an open glottis (ELTGOL)

• Grant number: 12/12020-3
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: October 01, 2012
• End date: September 30, 2013
• Field of knowledge: Health Sciences - Physiotherapy and Occupational Therapy
• Principal Investigator: Fernanda de Cordoba Lanza
• Grantee: Cintia Santos Alves
• Host Institution: Universidade Nove de Julho (UNINOVE). Campus Memorial. São Paulo , SP, Brazil

Abstract

Several authors have described the benefits of the technique of slow expiration with the glottis open (ELTGOL) for patients with chronic lung disease, and the main outcome of these studies has been the amount of secretion eliminated and the rheological characteristics of mucus. However, although the technique has been described and studied for over 20 years, some findings have yet to be clarified, and the amount of volume that can be mobilized by this technique. Objectives: To evaluate and quantify changes in expiratory reserve volume (ERV) in patients with chronic lung disease during the application of the technique ELTGOL. Method: a cross-sectional study, with non-probabilistic sample of patients referred to the outpatient. Inclusion criteria: patients with chronic pulmonary disease (COPD, asthma, bronchiectasis, cystic fibrosis) between 30 and 75 years, who are able to perform the technique and spirometry ELTGOL. Shall be excluded: patients with unstable chest found in the physical assessment, medical diagnosis of osteoporosis. Spirometry will be performed to determine the degree of obstruction by the technique of forced vital capacity. It will also show a slow vital capacity to determine the inspiratory capacity (IC) and expiratory reserve volume (ERV). This maneuver is performed during the execution of ELTGOL technique to determine the variation of the ERV and IC implementation. To determine the expected value of spirometry the patient will be weighed and measured in trademark Welmy scale ranging from 0 to 140kg with a ruler and height 1.0 to 2.0 m. The technique ELTGOL be performed with the patient in lateral decubitus according to recommendations. The patient is positioned in right lateral decubitus, and asked to start the expiration smoothly through a nozzle from the tidal volume, and that makes the extension of this phase to expel all air from the lungs. At this point the exhaled volume is measured. The physiotherapist will be positioned behind the patient and assist the expiration promoting the compression in the chest and abdomen. ELTGOL The technique is applied in three consecutive exhalations by a physical therapist trained to do so. Statistical analysis: Taking into account the 20% variation in expiratory reserve volume, found in a similar study in technique with the same principles of ELTGOL, determining power of 90% and error ALFA 0.05 will need 18 subjects for each group. Whereas loss of 15% in patient selection will be required 21 patients for each group. It is hoped that this study was to determine the change in lung volume during application of ETLGOL.(AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

LANZA, FERNANDA C.; ALVES, CINTIA SANTOS; DOS SANTOS, ROBERTA LOURES; DE CAMARGO, ANDERSON ALVES; DAL CORSO, SIMONE. Expiratory Reserve Volume During Slow Expiration With Glottis Opened in Infra lateral Decubitus Position (ELTGOL) in Chronic Pulmonary Disease: Technique Description and Reproducibility. Respiratory Care, v. 60, n. 3, p. 406-411, MAR 2015. (12/12020-3)