Comparison of the effects of voluntary and involuntary breath stacking techniques on respiratory mechanics and lung function patterns in tracheostomized patients: a randomized crossover clinical trial
ABSTRACT Objective: To compare the effects of voluntary breath stacking (VBS) and involuntary breath stacking (IBS) techniques on respiratory mechanics, lung function patterns, and inspiratory capacity in tracheostomized patients. Methods: This was a randomized crossover clinical trial involving 2...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Pneumologia e Tisiologia
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| Series: | Jornal Brasileiro de Pneumologia |
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| Online Access: | http://www.scielo.br/pdf/jbpneu/v46n4/1806-3713-jbpneu-46-04-e20190295.pdf |
| _version_ | 1818361786654523392 |
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| author | Luciano Matos Chicayban Alice Campos Hemétrio Liz Tavares Rangel Azevedo |
| author_facet | Luciano Matos Chicayban Alice Campos Hemétrio Liz Tavares Rangel Azevedo |
| author_sort | Luciano Matos Chicayban |
| collection | DOAJ |
| description | ABSTRACT Objective: To compare the effects of voluntary breath stacking (VBS) and involuntary breath stacking (IBS) techniques on respiratory mechanics, lung function patterns, and inspiratory capacity in tracheostomized patients. Methods: This was a randomized crossover clinical trial involving 20 tracheostomized patients admitted to the ICU and submitted to the VBS and IBS techniques, in random order, with an interval of 5 h between each. Ten cycles of each technique were performed with an interval of 30 s between each cycle. In VBS, patients performed successive inspirations for up to 30 s through a one-way valve, whereas in IBS, successive slow insufflations were performed with a resuscitator bag until the pressure reached 40 cmH2O. Respiratory mechanics, inspiratory capacity, and the lung function pattern were evaluated before and after the interventions. Results: After IBS, there was an increase in static compliance (p = 0.007), which was also higher after IBS than after VBS (p = 0.03). There was no significant difference between the pre-VBS and post-VBS evaluations in terms of static compliance (p = 0.42). Inspiratory capacity was also greater after IBS than after VBS (2,420.7 ± 480.9 mL vs. 1,211.3 ± 562.8 mL; p < 0.001), as was airway pressure (38.3 ± 2.6 cmH2O vs. 25.8 ± 5.5 cmH2O; p < 0.001). There were no changes in resistance or lung function pattern after the application of either technique. Conclusions: In comparison with VBS, IBS promoted greater inspiratory capacity and higher airway pressure, resulting in an increase in static compliance. |
| first_indexed | 2024-12-13T21:22:13Z |
| format | Article |
| id | doaj.art-57b11cff2a654247b82c9dcc93281126 |
| institution | Directory Open Access Journal |
| issn | 1806-3756 |
| language | English |
| last_indexed | 2024-12-13T21:22:13Z |
| publisher | Sociedade Brasileira de Pneumologia e Tisiologia |
| record_format | Article |
| series | Jornal Brasileiro de Pneumologia |
| spelling | doaj.art-57b11cff2a654247b82c9dcc932811262022-12-21T23:31:04ZengSociedade Brasileira de Pneumologia e TisiologiaJornal Brasileiro de Pneumologia1806-375610.36416/1806-3756/e20190295Comparison of the effects of voluntary and involuntary breath stacking techniques on respiratory mechanics and lung function patterns in tracheostomized patients: a randomized crossover clinical trialLuciano Matos ChicaybanAlice Campos HemétrioLiz Tavares Rangel AzevedoABSTRACT Objective: To compare the effects of voluntary breath stacking (VBS) and involuntary breath stacking (IBS) techniques on respiratory mechanics, lung function patterns, and inspiratory capacity in tracheostomized patients. Methods: This was a randomized crossover clinical trial involving 20 tracheostomized patients admitted to the ICU and submitted to the VBS and IBS techniques, in random order, with an interval of 5 h between each. Ten cycles of each technique were performed with an interval of 30 s between each cycle. In VBS, patients performed successive inspirations for up to 30 s through a one-way valve, whereas in IBS, successive slow insufflations were performed with a resuscitator bag until the pressure reached 40 cmH2O. Respiratory mechanics, inspiratory capacity, and the lung function pattern were evaluated before and after the interventions. Results: After IBS, there was an increase in static compliance (p = 0.007), which was also higher after IBS than after VBS (p = 0.03). There was no significant difference between the pre-VBS and post-VBS evaluations in terms of static compliance (p = 0.42). Inspiratory capacity was also greater after IBS than after VBS (2,420.7 ± 480.9 mL vs. 1,211.3 ± 562.8 mL; p < 0.001), as was airway pressure (38.3 ± 2.6 cmH2O vs. 25.8 ± 5.5 cmH2O; p < 0.001). There were no changes in resistance or lung function pattern after the application of either technique. Conclusions: In comparison with VBS, IBS promoted greater inspiratory capacity and higher airway pressure, resulting in an increase in static compliance.http://www.scielo.br/pdf/jbpneu/v46n4/1806-3713-jbpneu-46-04-e20190295.pdfMucociliary clearanceRespiratory care unitsRespiratory mechanicsPhysical therapy modalities |
| spellingShingle | Luciano Matos Chicayban Alice Campos Hemétrio Liz Tavares Rangel Azevedo Comparison of the effects of voluntary and involuntary breath stacking techniques on respiratory mechanics and lung function patterns in tracheostomized patients: a randomized crossover clinical trial Jornal Brasileiro de Pneumologia Mucociliary clearance Respiratory care units Respiratory mechanics Physical therapy modalities |
| title | Comparison of the effects of voluntary and involuntary breath stacking techniques on respiratory mechanics and lung function patterns in tracheostomized patients: a randomized crossover clinical trial |
| title_full | Comparison of the effects of voluntary and involuntary breath stacking techniques on respiratory mechanics and lung function patterns in tracheostomized patients: a randomized crossover clinical trial |
| title_fullStr | Comparison of the effects of voluntary and involuntary breath stacking techniques on respiratory mechanics and lung function patterns in tracheostomized patients: a randomized crossover clinical trial |
| title_full_unstemmed | Comparison of the effects of voluntary and involuntary breath stacking techniques on respiratory mechanics and lung function patterns in tracheostomized patients: a randomized crossover clinical trial |
| title_short | Comparison of the effects of voluntary and involuntary breath stacking techniques on respiratory mechanics and lung function patterns in tracheostomized patients: a randomized crossover clinical trial |
| title_sort | comparison of the effects of voluntary and involuntary breath stacking techniques on respiratory mechanics and lung function patterns in tracheostomized patients a randomized crossover clinical trial |
| topic | Mucociliary clearance Respiratory care units Respiratory mechanics Physical therapy modalities |
| url | http://www.scielo.br/pdf/jbpneu/v46n4/1806-3713-jbpneu-46-04-e20190295.pdf |
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