In a group of seven patients with pulmonary embolism, evidence of bronchoconstriction was found. Heparin appeared to relieve partially the observed airway obstruction. A possible common mechanism for the initiation of intravascular coagulation and the production of bronchoconstriction was considered. When other causes can be eliminated, the detection of bronchoconstriction may serve as a useful index for the early recognition of pulmonary emboli.
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Gurewich et al. (1963) studied this question.
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