efeitos da manobra de hiperinsuflação manual associada à pressão positiva expiratória final em pacientes submetidos à cirurgia de revascularização miocárdica effects of manual hyperinflation maneuver associated with positive end expiratory pressure in patients within coronary artery bypass grafting
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2010
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Abstract
OBJETIVO: Verificar os efeitos da manobra de hiperinsuflação manual associada à pressão positiva expiratória final em pacientes submetidos à cirurgia de revascularização do miocárdio. MÉTODOS: Ensaio clínico randomizado realizado entre agosto de 2007 e julho de 2008 na unidade de terapia intensiva do Hospital Luterano (ULBRA). Os pacientes foram divididos em grupo intervenção, no qual foi aplicada a manobra de hiperinsuflação manual associada à pressão positiva expiratória final, e grupo controle. As variáveis ventilatórias foram mensuradas em dois momentos: pré-manobra e pós-manobra. Foram utilizados os testes t de Student para amostras independentes e pareadas, bem como os testes exato de Fisher e o qui-quadrado de McNemar. RESULTADOS: Foram incluídos 18 pacientes durante o período de estudo, com idade média de 64±11 anos, sendo que houve predomínio do sexo feminino (55,6%). O volume corrente inspirado foi de 594± 112 ml no grupo intervenção e 487± 51 ml no grupo controle (p=0,024) e o volume corrente expirado de 598± 105 ml no grupo intervenção e 490± 58 ml no grupo controle (p=0,02). A média da complacência pulmonar estática no grupo intervenção pré-manobra foi de 41,6± 12,1 ml/cmH2O e pós-manobra de 47,4± 16,6 ml/cmH2O (p=0,03). Não houve diferença significativa entre os grupos nas seguintes variáveis: saturação periférica de oxigênio, pressão arterial de oxigênio, tempo de extubação e alterações radiológicas. CONCLUSÃO: Os resultados demonstram uma tendência da manobra de hiperinsuflação manual associada à pressão positiva expiratória final promover aumento dos volumes pulmonares e da complacência estática, entretanto estes achados necessitam confirmação.
OBJECTIVE: To verify the effects of manual hyperinflation maneuver associated with positive end expiratory pressure in coronary artery bypass grafting patients. METHODS: This was a randomized trial, conducted from August 2007 to July 2008 in the intensive care unit of the Hospital Luterano (ULBRA). The patients were divided in the groups intervention - with manual hyperinflation plus positive end expiratory pressure - and controlThe ventilatory variables were measured before and after the manual hyperinflation. The t Student's test was used for independent and paired samples as well as Fisher's exact test and McNemar's Chi-square test with 0.05 significance level. RESULTS: Eighteen patients were included. The mean age was 64± 11 years and 55.6% were female. The inspired tidal volume was 594± 112ml in the intervention group and 487± 51ml in the control group (p=0.024) and the expired tidal volume was 598± 105ml in the intervention group and 490± 58ml in the control group (p=0.02). The mean pre-maneuver static pulmonary compliance in the intervention group was 41.6± 12.1 ml/cmH2O and post maneuver it was 47.4± 16.6 ml/cmH2O (p=0.03). There was no significant between groups difference in the following variables: oxygen peripheral saturation, oxygen arterial pressure, extubation time and radiological changes. CONCLUSION: The results show that the manual hyperinflation associated with positive end expiratory pressure maneuver trends to promote increased lung volumes and static compliance, however these findings require further confirmation.
OBJECTIVE: To verify the effects of manual hyperinflation maneuver associated with positive end expiratory pressure in coronary artery bypass grafting patients. METHODS: This was a randomized trial, conducted from August 2007 to July 2008 in the intensive care unit of the Hospital Luterano (ULBRA). The patients were divided in the groups intervention - with manual hyperinflation plus positive end expiratory pressure - and controlThe ventilatory variables were measured before and after the manual hyperinflation. The t Student's test was used for independent and paired samples as well as Fisher's exact test and McNemar's Chi-square test with 0.05 significance level. RESULTS: Eighteen patients were included. The mean age was 64± 11 years and 55.6% were female. The inspired tidal volume was 594± 112ml in the intervention group and 487± 51ml in the control group (p=0.024) and the expired tidal volume was 598± 105ml in the intervention group and 490± 58ml in the control group (p=0.02). The mean pre-maneuver static pulmonary compliance in the intervention group was 41.6± 12.1 ml/cmH2O and post maneuver it was 47.4± 16.6 ml/cmH2O (p=0.03). There was no significant between groups difference in the following variables: oxygen peripheral saturation, oxygen arterial pressure, extubation time and radiological changes. CONCLUSION: The results show that the manual hyperinflation associated with positive end expiratory pressure maneuver trends to promote increased lung volumes and static compliance, however these findings require further confirmation.
| Reference Key |
santos2010revistaefeitos
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| Authors | ;Laura Jurema dos Santos;Clarissa Netto Blattner;César Augusto Bini Micol;Fernanda Abreu Miceli Pinto;Andressa Renon;Renata Pletsch |
| Journal | Database : the journal of biological databases and curation |
| Year | 2010 |
| DOI |
10.1590/S0103-507X2010000100008
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| URL | |
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