|| Checking for direct PDF access through Ovid
During pregnancy, women undergo significant physiologic changes, with increased demands on the respiratory system. Pulmonary problems common to the population at large, including pneumonia, tuberculosis, asthma, and thromboembolic disease, may acquire heightened significance when they occur in pregnancy. Severity of disease as well as maternal mortality may be affected. Attention must also be paid to the potential for adverse effects on the fetus, from both maternal disease per se and from effects of treatment with medication.