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Carbon monoxide diffusing capacity asthma and allergy

post in: Beauty, News Date:14 Nov 2017, 08:12 views:3704

Carbon monoxide diffusing capacity asthma and allergy

Pulmonary function testing has come into widespread use since the difference 1970s.

This has been facilitated by several developments.

1,2, because of miniaturization and advances in computer technology, microprocessor devices have become portable and automated with fewer moving parts.

Testing equipment, patient maneuvers, and testing techniques have become widely standardized throughout the world through the efforts of professional societies.

Widely accepted normative parameters have been established.

Definition, pulmonary function testing is a valuable tool for evaluating the respiratory system, representing an important adjunct to the patient history, various lung imaging studies, and invasive testing such as bronchoscopy and open-lung biopsy.

Insight into underlying pathophysiology can often be gained by comparing the measured values for pulmonary function tests obtained on a patient at any particular point with normative values derived from population studies. The percentage of predicted normal is used to grade the severity of the abnormality.

Practicing clinicians must become familiar with pulmonary function testing because it is often used in clinical medicine for evaluating respiratory symptoms such as dyspnea and cough, for stratifying preoperative risk, and for diagnosing common diseases such as asthma and chronic obstructive pulmonary disease. Pulmonary function tests (PFTs) is a generic term used to indicate a battery of studies or maneuvers that may be performed using standardized equipment to measure lung function.

PFTs can include simple screening spirometry, formal lung volume measurement, diffusing capacity for carbon monoxide, and arterial blood gases. These studies may collectively be referred to as a complete pulmonary function survey. Before a spirogram can be meaningfully interpreted, one needs to inspect the graphic data (the volume-time curve and the flow-volume loop) to ascertain whether the study meets certain well-defined acceptability and reproducibility standards.

 

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