Source: Annual Congress 2001 - Monitoring acute lung disease
Disease area: Airway diseases, Respiratory critical care

Abstract

ASV (Adapted Support Ventilation) is a unique form of pressure-targeted ventilation, which takes the prolonged time constant, the elevated lung compliance and the increased airway resistance into account, when the parameters are set. During PCV all the parameters are set by the physician, and remains the same until the next change. ASV therefore could provide a better breathing pattern, minimizing the operating lung volume, and reducing the danger of lung injury.
We compared the effect of ASV and PCV (Pressure Control Ventilation) on the respiratory system mechanics in intubated COPD patients (14) with the (Ventrak) Resp. Mech. Monitoring system with CO2 monitoring and esophageal balloon catheter.
Pressure-Time Product (PTP) (13.9±]1.3 vs 3.0±]1.96), I/E ratio (1.6±]3.3 vs. 3.2±]0.4) and PEEPi (16±]2.8 vs. 11±]2.4) was significantly higher using PCV, while the respiratory system Compliance (105±]14 vs. 233±]30.1) was lower (mean±]SD ANOVA p<0.05).
ASV provides a comparable level of minute ventilation, respiratory rate. If no patient trigger occurs ASV provide a lower I/E ratio, higher lung compliance and lower PEEPi and PTP, which suggest a lower operating lung volume. During spontaneous activity the ASV mode provides pressure supported breathes with the same pressure level as in controlled breathes, which results in a longer I/E ratio, higher tidal volume, and higher operating lung volume as during the passive breathes.

Rating:

Share or cite this content

Citations should be made in the following way:
A. Lorx, Z. Ivanyi, I. Penzes (Budapest, Hungary). Comparison between ASV and PCV in severe COPD patients. Eur Respir J 2001; 16: Suppl. 31, 1652

Member's Comments

No comment yet.

Related content which might interest you: Characterization of patients with severe COPD Source: International Congress 2018 – COPD around the world Year: 2018 Changes in FEV1 and SpO2 in patients with severe and very severe COPD Source: Virtual Congress 2021 – Lung function testing in the management of obstructive diseases Year: 2021 Predictors of poor outcome in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD) receiving noninvasive positive pressure ventilation (NPPV Source: International Congress 2015 – Outcome of noninvasive ventilatory support in acute and chronic respiratory failure Year: 2015 Care-continuity for COPD patients Source: Annual Congress 2012 - Nursing led education and follow-up strategies: impact on readmission, self care and patient experiences Year: 2012 COPD patients Source: Eur Respir Monogr 2021; 90: 154-164 Year: 2021 Comparison of survival rate following non-invasive ventilation in chronic obstructive pulmonary disease (COPD) and non-COPD patients Source: Annual Congress 2010 - Noninvasive ventilation in the acute patient: outcome and pathophysiology Year: 2010 Prognosis and evolution of COPD patients hospitalized and treated with non invasive ventilation Source: Annual Congress 2013 –New evidence for NIV in the acute setting Year: 2013 Comparison of clinical characteristics between stable COPD patients with- and without mild bronchiectasis Source: Eur Respir J 2002; 20: Suppl. 38, 257s Year: 2002 Evaluation of the individual bronchodilator response in patients with severe COPD Source: Eur Respir J 2002; 20: Suppl. 38, 246s Year: 2002 Impact of moderate and severe exacerbations in severe COPD patients Source: International Congress 2018 – How far are we in terms of predicting mortality and exacerbations in COPD? Year: 2018 Noninvasive ventilation in patients with acute exacerbation of COPD Source: Annual Congress 2007 - Acute respiratory failure and noninvasive mechanical ventilation Year: 2007 Salmeterol/fluticasone therapy improves FEV1 in mild and moderate more than in severe COPD patients Source: Eur Respir J 2004; 24: Suppl. 48, 342s Year: 2004 Severe outcomes of COVID-19 among patients with COPD and asthma Source: ERJ Open Res, 7 (1) 00594-2020; 10.1183/23120541.00594-2020 Year: 2021 Predictors of survival in severe COPD patients initiated on chronic NIV Source: International Congress 2016 – New horizons for noninvasive ventilation in acute and chronic settings Year: 2016 Comparison of the effectiveness of two schedules of pulmonary rehabilitation in patients with severe COPD Source: Eur Respir J 2006; 28: Suppl. 50, 555s Year: 2006 Survival of COPD patients after their first episode of acute exacerbation treated with non-invasive ventilation Source: Annual Congress 2011 - Recent advances in noninvasive ventilation used for treating acute respiratory failure Year: 2011 Compliance for NIMV treatment in moderate and severe OSAS patients Source: Annual Congress 2012 - Clinical predictors of OSA, adherence to CPAP and psychology Year: 2012 Assessment of non-invasive ventilation in acute severe asthma patients Source: Respiratory Failure and Mechanical Ventilation Conference 2020 Year: 2020 Predicting mortality in patients hospitalised with acute exacerbations of COPD (AECOPD) requiring assisted ventilation Source: Annual Congress 2012 - New scientific findings on noninvasive ventilation in the acute setting Year: 2012 Treatment of acute exacerbations with non-invasive mechanical ventilation (NIMV) in chronic hypercapnic COPD patients with pulmonary hypertension Source: Annual Congress 2010 - Noninvasive ventilation in the acute patient: outcome and pathophysiology Year: 2010