- The NIH Working Group on Asthma and Pregnancy has recommended that pregnant asthmatics are treated as aggressively as non-pregnant patients particularly during acute asthmatic attack. , Bronchodilators (except for epinephrine which is not in this study) have been found safe in pregnancy with a risk class of B and C. For these reasons, pregnancy by itself is not an exclusion criterion in this study and a pregnancy test will not be required for those who are in the childbearing age group. Requiring the test will unnecessarily delay the treatment for acute asthma. However, those who are suspected to be suffering from pregnancy-related complications like vaginal bleeding, premature labor, pre-eclampsia and others, are excluded.