A Clinical Review of the Single Breath Method of Measuring the Diffusing Capacity of the Lungs.
نویسندگان
چکیده
منابع مشابه
The Role of EDD (Exercise Capacity, Dyspnea, and Diffusing Capacity of Lungs for Carbon Monoxide) Index in Pulmonary Fibrosis Secondary to Scleroderma
Introduction: Pulmonary involvement secondary to Systemic Sclerosis (SSc) is the major cause of morbidity and mortality in SSc patients. We designed this study to determine the correlation of important lung function parameters with lung High Resolution CT (HRCT) scan findings. Materials and Methods: Thirty–two consecutive diffuse SSc patients with pulmonary fibrosis were enrolled in this cross...
متن کاملPulmonary diffusing capacity: a comparison of breath-holding and steady state methods using carbon monoxide.
Three methods are in current use for measuring the diffusing capacity of the lungs for carbon monoxide (DL). Two of these are steady state methods, and they differ in the methods used to calculate the mean alveolar carbon monoxide tension. Filley, MacIntosh and Wright (1) calculate the alveolar Pco indirectly, assuming the physiological dead space for carbon dioxide to be the same as that for c...
متن کاملAn analysis of factors affecting the measurement of pulmonary diffusing capacity by the single breath method.
The diffusing capacity of the lungs (DL) is defined as the rate of a gas transferred, divided by the difference in the mean partial pressure of that gas across the alveolar-capillary "membrane." Direct determination of the diffusing capacity for oxygen (DLo2) has been limited by technical difficulties and by the problematical calculation of the mean oxygen pressure on the capillary side of the ...
متن کاملRate of nitric oxide production by lower alveolar airways of human lungs.
This report describes methods for measuring nitric oxide production by the lungs' lower alveolar airways (VNO), defined as those alveoli and bronchioles well perfused by the pulmonary circulation. Breath holding or vigorous rebreathing for 15-20 s minimizes removal of NO from the lower airways and results in a constant partial pressure of NO in the lower airways (PL). Then the amount of NO diff...
متن کاملEffect of lung inflation on pulmonary diffusing capacity at rest and exercise.
Steady state measurements of the diffusing capacity of the lung are made at operational lung volume, whereas measurements by the breath-holding method are customarily made at full inspiration. The effect of lung inflation on diffusing capacity must be taken into account before the steady state and breath-holding methods can be validly compared. At rest the single breath diffusing capacity of th...
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عنوان ژورنال:
- Diseases of the chest
دوره 48 شماره
صفحات -
تاریخ انتشار 1965