title: Ultrasonic evaluation of jugular venous valve competence.
abstract: Jugular venous valve competence has been studied in the past only by invasive venography. The authors demonstrate that this valve can be noninvasively studied using real-time and pulsed Doppler ultrasound techniques and relate this to possible clinical implications. Visualization of the jugular valve with real-time ultrasound is reported and its competence documented using pulsed Doppler and M-mode techniques. The clinical relevance to the etiology of the respirator brain syndrome is discussed.
mesh_terms: D000328:Adult; D004562:Electrocardiography; D006801:Humans; D007601:Jugular Veins / Q000033:anatomy & histology / Q000502:physiology*; D008297:Male; D014465:Ultrasonics; D014463:Ultrasonography