Xopenex inhaler for children and adults

Asthma

Asthma is very wide-spread nowadays. As for American Lung Association, more than 20 million Americans suffer from this disease. More than 10 percent of the planet population, people of different ages and lifestyles have to live with this condition. In America asthma becomes “younger” from year to year as the number of children diagnosed with…

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Post-Test Probability of Asthma Following Methacholine Challenge: DISCUSSION part 2

But could such a less selective group, more compa­rable to a practical clinical setting, be used to establish sensitivity and specificity for challenge testing? Un­fortunately, there is no gold standard for the diagnosis of bronchial asthma, as there is for coronary artery disease or pulmonary embolism, where coronary and pulmonary angiography are considered diagnostic. If…

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Post-Test Probability of Asthma Following Methacholine Challenge: RESULTS

The resulting curves are shown in Figure 1. The pretest probability is shown on the abscissa, the post- test probability on the ordinate. As an example, suppose a physician estimated that a nonsmoker had a 50 percent likelihood of asthma on the basis of history, physical examination, and laboratory infor­mation. If a methacholine challenge test…

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Post-Test Probability of Asthma Following Methacholine Challenge: METHODS

The data of Casale and associates for nonatopic asymptomatic cigarette smokers and nonsmokers with and without asthma were used for the analysis. The nonsmoking nonasthmatic group excluded patients with an atopic or allergic background or with positive skin tests. Sensitivity (SE) is defined as the fraction of patients with the disease who have a positive test….

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Post-Test Probability of Asthma Following Methacholine Challenge

Tistamine and methacholine inhalation challenge are used extensively to determine bronchial reactivity and the likelihood of asthma in patients in whom the diagnosis is not obvious. Critical analyses, however, have shown that, as with all laboratory tests, there is overlap of results for normal and abnormal subjects. This overlap forces the physician to use decision…

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