Brazilian Journal of Pulmonology

ISSN (on-line): 1806-3756 | ISSN (printed): 1806-3713

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Comparisons among parameters of maximal respiratory pressures in healthy subjects

Comparação entre parâmetros de pressões respiratórias máximas em indivíduos saudáveis

Cristina Martins Coelho, Rosa Maria de Carvalho, David Sérgio Adães Gouvêa, José Marques Novo Júnior

J Bras Pneumol.2012;38(5):605-613

Abstract PDF PT PDF EN Portuguese Text

Objective: To investigate four parameters defining maximal respiratory pressures and to evaluate their correlations and agreements among those parameters for the determination of MIP and MEP. Methods: This was a cross-sectional study involving 49 healthy, well-nourished males and females. The mean age was 23.08 ± 2.5 years. Measurements were carried out using a pressure transducer, and the estimated values for the parameters peak pressure (Ppeak), plateau pressure (Pplateau), mean maximal pressure (Pmean), and pressure according to the area (Parea) were determined with an algorithm developed for the study. To characterize the study sample, we used descriptive statistics, followed by repeated measures ANOVA and Bonferroni post hoc test or by the Friedman test and the Wilcoxon post hoc test, as well as by Pearson's or Spearman's correlation coefficients, depending on the normality of the data. The agreement between the variables was assessed with Bland  Altman plots. Results: There were significant differences among all of the parameters studied for MIP (Ppeak = 95.69 ± 27.89 cmH2O; Parea = 88.53 ± 26.45 cmH2O; Pplateau = 82.48 ± 25.11 cmH2O; Pmean = 89.01 ± 26.41 cmH2O; p < 0.05 for all) and for MEP (Ppeak = 109.98 ± 40.67 cmH2O; Parea = 103.85 ± 36.63 cmH2O; Pplateau = 98.93 ± 32.10 cmH2O; Pmean = 104.43 ± 36.74 cmH2O; p < 0.0083 for all). Poor agreement was found among almost all of the parameters. Higher pressure values resulted in larger differences between the variables. Conclusions: The maximal respiratory pressure parameters evaluated do not seem to be interchangeable, and higher pressure values result in larger differences among the parameters.

 


Keywords: Respiratory system; Muscle strength; Respiratory function tests.

 


Effects of the implementation of a hand hygiene education program among ICU professionals: an interrupted time-series analysis

Efeitos da implementação de um programa de educação de higienização das mãos entre profissionais de uma UTI: análise de séries temporais interrompidas

Diana Marcela Prieto Romero1,a, Maycon Moura Reboredo1,2,b, Edimar Pedrosa Gomes1,2,c, Cristina Martins Coelho1,d, Maria Aparecida Stroppa de Paula1,e, Luciene Carnevale de Souza1,f, Fernando Antonio Basile Colugnati2,g, Bruno Valle Pinheiro1,2,hDiana Marcela Prieto Romero1,a, Maycon Moura Reboredo1,2,b, Edimar Pedrosa Gomes1,2,c, Cristina Martins Coelho1,d, Maria Aparecida Stroppa de Paula1,e, Luciene Carnevale de Souza1,f, Fernando Antonio Basile Colugnati2,g, Bruno Valle Pinheiro1,2,h

J Bras Pneumol.2019;45(5):e20180152-e20180152

Abstract PDF PT PDF EN Portuguese Text

Objective: To evaluate the effects that a hand hygiene education program has on the compliance of health professionals in an ICU. Methods: This was a quasi-experimental study with an interrupted time-series design, conducted over a 12-month period: the 5 months preceding the implementation of a hand hygiene education program (baseline period); the 2 months of the intensive (intervention) phase of the program; and the first 5 months thereafter (post-intervention phase). Hand hygiene compliance was monitored by one of the researchers, unbeknownst to the ICU team. The primary outcome measure was the variation in the rate of hand hygiene compliance. We also evaluated the duration of mechanical ventilation (MV), as well as the incidence of ventilator-associated pneumonia (VAP) at 28 days and 60 days, together with mortality at 28 days and 60 days. Results: On the basis of 959 observations, we found a significant increase in hand hygiene compliance rates-from 31.5% at baseline to 65.8% during the intervention phase and 83.8% during the post-intervention phase, corresponding to prevalence ratios of 2.09 and 2.66, respectively, in comparison with the baseline rate (p < 0.001). Despite that improvement, there were no significant changes in duration of MV, VAP incidence (at 28 or 60 days), or mortality (at 28 or 60 days). Conclusions: Our findings indicate that a hand hygiene education program can increase hand hygiene compliance among ICU professionals, although it appears to have no impact on VAP incidence, duration of MV, or mortality.

 


Keywords: Hand disinfection; Health personnel; Pneumonia, ventilator-associated; Respiration, artificial; Guideline adherence.

 


 

 


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