Resp Care
-
Oxidative stress has been known for having a key role in pathogenesis of many diseases. The aim of this study was to investigate the oxidative stress and also the relationship between antioxidant system statuses and lung function in patients with COPD and smokers and non-smokers subjects. ⋯ Decreased total antioxidant capacity in plasma of subjects with COPD and smokers suggests an increased oxidative stress in this group. However, no relationship was found between lung function and antioxidant systems status in COPD subjects.
-
Randomized Controlled Trial
Different tracheotomy tube diameters influence diaphragmatic effort and indices of weanability in difficult to wean patients.
To determine the effects of different tracheotomy tube sizes on diaphragm effort and weanability indices. ⋯ In tracheotomized difficult to wean subjects the decrease of the tracheotomy tube size was associated with an increased PTP(di), f/V(T), and TT(di), that were otherwise normal, using a higher diameter. The in vitro study showed that the resistances increased similarly for tracheotomy tube and endotracheal tube, decreasing the diameter and increasing the flows.
-
To determine the utility of soluble triggering receptor expressed on myeloid cells-1 (sTREM-1) levels in bronchoalveolar lavage fluid (BALF) and exhaled breath condensate (EBC) samples from patients who underwent bronchoscopy for a clinical suspicion of ventilator-associated pneumonia (VAP), to categorize patients as VAP positive and VAP negative, when compared to quantitative culture results of BALF. ⋯ EBC and BALF sTREM-1 levels did not effectively categorize patients as VAP positive or VAP negative when using direct bronchoscopic quantitative culture samples as the comparison standard.
-
The accuracy of end-expiratory lung volume measurement by the modified nitrogen wash-out/wash-in method (EELV-N(2)) depends on the precise determination of carbon dioxide elimination (V(CO(2))), which is affected by alveolar dead space (V(D-alv)). The purpose of this study was to investigate the influence of V(D-alv) on EELV-N(2). ⋯ In this surfactant-depleted model, EELV measurement by the modified EELV-N(2) method reveals a systematic underestimation at high PEEP levels that is partly due to an increase in V(D-alv).
-
Case Reports
Prolonged high-frequency oscillatory ventilation in tubercular multifocal cystic lung disease.
Multifocal cystic lung disease in infants is most commonly congenital, and is managed surgically with perioperative mechanical ventilation. Multifocal cystic lung disease in infants may be due to tuberculosis. We report a young infant with tubercular multifocal cystic lung disease and respiratory failure. ⋯ Subsequent chest imaging showed progression to multifocal cystic lung disease. The ventilation mode was changed to high-frequency oscillatory ventilation (HFOV) due to persistent CO(2) retention in the presence of cystic lung disease. The cystic lung disease reversed with antitubercular treatment and prolonged HFOV with slow wean.