Observational studyThe Journal of asthma : official journal of the Association for the Care of Asthma2019
Respiratory waveform variation can prevent pulsus paradoxus measurement by sphygmomanometry.
Observational study in The Journal of asthma : official journal of the Association for the Care of Asthma, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed, 1 citations in OpenAlex.
- Prediction of acute asthma exacerbation severity and interrater reliability of manual pulsus paradoxus measurement.Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology · 2019Observational
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3 authors at 2 institutions in 1 country.
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Abstract
backgroundPulsus paradoxus (PP) represents increased fluctuation of systolic pressure during the respiratory cycle. PP increases in pathologic conditions, including asthma and other obstructive airways diseases. Respiratory waveform variation (RWV) represents arterial-waveform baseline variability resulting from intra-pleural pressure changes during the respiratory cycle in the presence of airway obstruction. It is not known whether RWV influences manual PP measurement using a sphygmomanometer and stethoscope.
methodsWe performed an observational study in six healthy adults. Participants performed tidal-breathing through a breathing apparatus with pre-determined inspiratory (0-45.6 cm H
resultsIn this study, PP values measured without applied airway resistance exceeded 10 mmHg, the traditional definition of PP, in five of the six participants. Manual measurement of PP would not be possible at greater RWV because the maximum diastolic pressure exceeded minimum systolic pressure during RWV.
conclusionsPP in normal adults may exceed 10 mmHg, and RWV may be of sufficient magnitude to preclude manual PP measurement.
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