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Relation between pulsus paradoxus and pulmonary function in patients with chronic airways obstruction

, : Relation between pulsus paradoxus and pulmonary function in patients with chronic airways obstruction. Canadian Medical Association Journal 117(12): 1389-1392

The relation of pulsus paradoxus to chronic, stable obstructive disease of the airways has not previously been described. Pulsus paradoxus was observed in 66% of 68 patients with such disease but in none of 14 healthy individuals. There was a significant correlation between the degree of pulsus paradoxus and the forced expiratory volume in 1 second (FEV1) in the subgroup of patients with bronchial asthma but not in the subgroup with chronic bronchitis or emphysema, or both. There was no correlation between the degree of pulsus paradoxus and the degree of hyperinflation in either group. Hence factors other than hyperinflation contribute importantly to the decrease in systolic pressure that occurs at full inflation of the lungs.


PMID: 589538

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