Partitioning the work-sparing effects of partial ventilatory support in airflow obstruction
نویسنده
چکیده
Sweeping conclusions regarding the utility or nonutility of elevating expiratory pressure are not warranted. The effects of manipulating airway pressure in the setting of airflow obstruction depend heavily on the nature and severity of disease, as well as on the presence of airflow limitation during tidal breathing.
منابع مشابه
Neurally adjusted ventilatory assist
PURPOSE OF REVIEW Compared with the conventional forms of partial support, neurally adjusted ventilatory assist was repeatedly shown to improve patient-ventilator synchrony and reduce the risk of overassistance, while guaranteeing adequate inspiratory effort and gas exchange. A few animal studies also suggested the potential of neurally adjusted ventilatory assist in averting the risk of ventil...
متن کاملClinics in Chest Medicine
MECHANICAL VENTILATION IN OBSTRUCTIVE LUNG DISEASE James W. Leatherman MD Severe airflow obstruction is one of the most common causes of acute respiratory failure encountered in medical ICUs. Although most patients with life-threatening exacerbations of asthma or chronic obstructive pulmonary disease (COPD) respond to a noninvasive approach, in certain instances, endotracheal intubation and mec...
متن کاملThe pattern of breathing in patients with chronic airflow obstruction.
1. The pattern of breathing in 12 patients with severe irreversible airflow obstruction has been studied during ventilatory stimulation by rebreathing CO2. Mean maximum tidal volume response was only 1.23 +/- 0.30 litres (mean +/- SD); this represented 65% of mean measured vital capacity and 82% of mean measured inspiratory capacity. During the course of rebreathing mean total breath duration w...
متن کاملDetection ofDepressed Ventilatory Drive in Patients with Obstructive Pulmonary Disease
Impaired pulmonary mechanics or depression of the respiratory centers can limit the ventilatory response to inhaled carbon dioxide in patients with chronic obstructive pulmonary disease (COPD). We devised a method able to detect depressed neurogenic and chemical ventilatory drive during expiratory airflow obstruction. In 14 normal subjects, we impeded expiratory airflow while measuring the resu...
متن کاملEffects of nasal pressure support on ventilation and inspiratory work in normocapnic and hypercapnic patients with stable COPD.
OBJECTIVES To assess and compare the effect of nasal continuous positive airway pressure (nCPAP), inspiratory pressure support (PSV), and bilevel positive airway pressure (biPAP) on ventilatory parameters and inspiratory work (WOB) in normocapnic and hypercapnic patients with stable COPD. METHODS While administering nasal pressure support to 10 normocapnic and 10 hypercapnic patients with COP...
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عنوان ژورنال:
- Critical Care
دوره 8 شماره
صفحات -
تاریخ انتشار 2004