نتایج جستجو برای: lung hyperinflation
تعداد نتایج: 309153 فیلتر نتایج به سال:
It is still not known whether persistent increases in functional residual capacity (FRC) and residual volume (RV) after lung transplantation are due to preexisting hyperinflation. Therefore, the aim of this study was to determine the effects of chronic lung hyperinflation on static lung volumes after heart/lung (HLT) and bilateral lung transplantation (BLT). Static lung volumes were measured in...
The prognostic role of resting pulmonary hyperinflation as measured by residual volume (RV)/total lung capacity (TLC) in chronic obstructive pulmonary disease (COPD) remains poorly understood. Therefore, this study aimed to identify the factors related to resting pulmonary hyperinflation in COPD and to determine whether resting pulmonary hyperinflation is a prognostic factor in COPD. In total, ...
In normal subjects breathing at rest, lung volume at end-expiration corresponds with the elastic equilibrium volume, or relaxation volume (Vr), of the respiratory system. If expiratory duration is not long enough, then inspiration may begin before the system has returned to Vr, such that end-expiratory lung volume is higher than Vr. This condition is named dynamic pulmonary hyperinflation and "...
Hyperinflation is the consequence of a dysbalance of static forces (determining the relaxation volume) and/or of the dynamic components. The relaxation volume is determined by an equilibrium between the elastic recoil of the lungs and of the chest walls. The dynamic components include the pattern of breathing, upper airway resistance and postinspiratory activity of inspiratory muscles. The resp...
Background and Purpose: The present study aimed to evaluate the consistency with which physiotherapists apply manual hyperinflation to a test lung using the AirViva-2 or Mapleson-B resuscitation circuit, and their ability to modify the technique as pulmonary characteristics change. Method: A quasi-experimental, randomized, repeatedmeasures design was used to study 16 volunteer physiotherapists ...
Background Significant cardiovascular morbidity and mortality exists in COPD, independent of traditional risk factors, although the mechanisms are poorly understood. Lung hyperinflation, the presence of supra-normal residual volumes (RVol) at the end of expiration, is one postulated mechanism. We sought to investigate the impact of COPD on cardiac structure and function compared to a control gr...
The natural history of lung hyperinflation in patients with airway obstruction is unknown. In particular, little information exists about the extent of air trapping and its reversibility to bronchodilator therapy in those with mild airway obstruction. We completed a retrospective analysis of data from individuals with airway obstruction who attended our pulmonary function laboratory and had ple...
Background: Physiotherapists use manual hyperinflation (MHI) as a treatment for the recruitment of collapsed lung and mobilization of excess pulmonary secretions .Purpose: To investigate the acute effect of manual hyperinflation (MHI) on oxygenation and volume of secretions cleared in mechanically ventilated patients. Subjects and Methods: Manual hyperinflation was delivered in 30 medically sta...
Aim. To develop a method for determining the lung inflation by indexes of forced expiratory flowvolume spirometry. Materials and methods. In 43 patients with mild persistent uncontrolled asthma in combination osmotic airway hyperresponsiveness, function were assessed spirometry using bronchodilation test bodyplethysmography. Results. From entire set parameters, regression analysis, two equatio...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید