Correlação entre pressão inspiratória máxima, ventilação pulmonar e tempo de ventilação em pacientes ventilados no modo pressão de suporte

• Main Authors: Baldomero Antonio Kato da Silva, Joyce Kellen Diniz Souza, Daniel Martins Pereira, Ricardo Dutra Aydos, Paulo de Tarso Camillo de Carvalho, Filipe Abdalla dos Reis
• Format: Article
• Language: Portuguese
• Published: Universidade Nove de Julho 2008-01-01
• Series: ConScientiae Saúde
• Online Access: http://www.redalyc.org/articulo.oa?id=92911262014
• ISSN: 1677-1028; 1983-9324

In this study, it is evaluated the influence of time in mechanical ventilation on maximal inspiratory pressure and pulmonary volume of pressure support ventilated patients. 12 adult patients, 4 female and 8 male, in weaning process under pressure support mode were included. Maximal inspiratory pressure, minute volume, tidal volume and time of mechanical ventilation were calculated for all patients. The statistical analysis was made by Pearson Linear Correlation Coefficient, with significant level p<0,05. It was observed a negative correlation between time of mechanical ventilation and maximal inspiratory pressure (r = -0,7142; p = 0,009), and time of mechanical ventilation and tidal volume (r = -0,601; p = 0,0387). The time of mechanical ventilation has negative influence on respiratory muscular strength and tidal volume in pressure support ventilated patients.