Flow velocity paradoxus and pulsus paradoxus in obstructive sleep apnea syndrome.

Shiomi, T; Guilleminault, C; Maekawa, M; Nakamura, A; Yamada, K · Chest · 1993

case_report · Level V

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Abstract

Echo-Doppler monitoring was performed simultaneously with two-dimensional and M-mode echocardiography, polysomnography and blood pressure recording in an obstructive sleep apnea patient. Increase in tricuspid flow and decrease of mitral flow velocity was demonstrated during each diastole prior to pulsus paradoxus, while aortic flow velocity decreased with pulsus paradoxus during obstructed breathing during sleep.

Medical subject headings