Respiratory care
-
Postoperative pulmonary complications contribute to perioperative morbidity and mortality in addition to being associated with increased health care costs. In this review article, we outline risk factors for the development postoperative pulmonary complications, describe their impact on perioperative outcomes, and focus on the role of intraoperative ventilation strategies in decreasing postoperative pulmonary complications.
-
In patients with cystic fibrosis (CF), despite the availability of many different pharmacologic agents, lung function deteriorates and lung disease progresses and leads to hypercapnic respiratory failure in some patients. In such cases, noninvasive ventilation (NIV) seems to be a promising technique that can be used on demand. This review summarizes the current applications of NIV in clinical settings as well as findings of the clinical trials that involved the delivery of NIV on variable occasions, such as an adjunct to physiotherapy, in nocturnal hypoventilation, and acute and chronic respiratory failure. ⋯ It can stabilize lung function, although its effect on hypercapnia is not always evident. Nocturnal NIV has been used in patients with CF and with hypoventilation during sleep but without clear benefits on daytime [Formula: see text] NIV as an adjunct to chest physiotherapy may be helpful when desaturation is observed during physiotherapy and when there are signs of respiratory muscle fatigue. NIV use in CF has been increasing, mainly in adult CF centers, and offers patients an opportunity to reach lung transplantation or to overcome acute hypercapnic respiratory failure.
-
Randomized Controlled Trial
Effect of Recruitment Maneuvers and PEEP on Respiratory Failure After Cardiothoracic Surgery in Obese Subjects: A Randomized Controlled Trial.
Obesity may increase the risk of respiratory failure after cardiothoracic surgery. A recruitment maneuver followed by PEEP might decrease the risk of respiratory failure in obese subjects. We hypothesized that the routine use after heart surgery of a recruitment maneuver followed by high or low PEEP level would decrease the frequency of respiratory failure in obese subjects. ⋯ The routine use after heart surgery of a recruitment maneuver followed by 5 or 10 cm H2O of PEEP did not decrease the frequency of respiratory failure in obese subjects. A recruitment maneuver followed by 5 cm H2O of PEEP is inappropriate.
-
The spirometric response to fast-acting bronchodilator is used clinically to diagnose asthma and in clinical research to verify its presence. However, bronchodilator responsiveness does not correlate with airway hyper-responsiveness measured with the direct-acting stimulus of methacholine, demonstrating that bronchodilator responsiveness is a problematic method for diagnosing asthma. The relationship between bronchodilator responsiveness and airway hyper-responsiveness assessed with indirect-acting stimuli is not known. ⋯ These results extend previous findings that demonstrate a lack of association between bronchodilator responsiveness and methacholine responsiveness. Given the poor concordance between the spirometric response to fast-acting bronchodilator and the EVH challenge, these findings suggest that the airway response to inhaled β2-agonist must be interpreted with caution and in the context of its determinants and limitations.