منابع مشابه
Pulsus alternans: Doppler demonstration.
A 20-year–old man presented with history of orthopnea and paroxysmal nocturnal dyspnea for 7 days. He had a history of acute febrile illness and coryza 10 days before the start of symptoms. On clinical examination, his pulse was 130 beats per minute, regular with beat-to-beat variation in pulse volume. Blood pressure was 80/48 mm Hg. Bilateral basal crepitations were noted on chest auscultation...
متن کاملMechanisms of pulsus alternans.
The mechanisms of pulsus alternans were studied in three patients by cineangiographic determinations of left ventricular volume. In two patients with left ventricular disease, pulsus altemans occurred without detectable variation in left ventricular enddiastolic pressure (LVEDP) or end-diastolic volume (EDV), although in the second case these values did alternate in the initial postextrasystoli...
متن کاملBiventricular Pulsus Alternans
Pulsus alternans is a rare hemodynamic condition characterized by beat-to-beat variability in systolic pressure. It is attributed to variations in stroke volume with alternate cardiac cycles and is typically seen in patients with advanced myopathic conditions. Left ventricular pulsus alternans is rare, and right ventricular pulsus alternans is even less common. There are only a few reports of b...
متن کاملPulsus alternans. A case study.
Mark Weber was a graduate student in the pediatric critical care nurse practitioner program at the University of Pennsylvania in Philadelphia when this article was written. He is now a nurse practitioner in the pediatric intensive care unit at West Virginia University Hospital in Morgantown, WV. enlarged size of the heart. Physical examination revealed diaphoresis, jugular venous distention, S3...
متن کاملOrthostatic factors in pulsus alternans.
IN THE past two years we have observed three patients with heart disease in whom pulsus alternans was strikingly related to posture. Ventricular alternans was present only in the erect or semierect position and disappeared with recumbency. The phenomenon could be reproduced at will, thus affording an opportunity to study some of the mechanisms concerned in its production. The three subjects wer...
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ژورنال
عنوان ژورنال: Saudi Journal of Anaesthesia
سال: 2014
ISSN: 1658-354X
DOI: 10.4103/1658-354x.130762