| Effect of postural changes on pulsus alternans: an echocardiographic study. | |
| | |
MedLine Citation:
|
PMID: 436499 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
We describe a patient who had severe left ventricular dysfunction and pulsus alternans following an episode of severe viral myocarditis. Pulsus alternans was mild with the patient in the supine and squatting positions but increased dramatically on standing. Echocardiograms were used to study changes in left ventricular dimension and function with changes in posture. On standing, there was a decrease in the left ventricular diameter and an increase in the absolute and relative shortening fraction and the velocity of shortening on the strong beats, and there was a decrease in end-diastolic dimension and the measurements of ventricular contractility on the weak beats. The marked increase in pulsus alternans during standing may have been induced by increased sympathetic stimulation following the decrease in ventricular loading conditions, while the great beat-to-beat differences in end-diastolic dimension suggest, in addition, the importance of Starling's mechanism. |
| | |
Authors:
|
B S Lewis; N Lewis; M S Gotsman |
Related Documents
:
|
9119539 - Assessment of left ventricular dimensions and functions in athletes and sedentary subje... 19531259 - Comparison of contrast enhanced three dimensional echocardiography with mibi gated spec... 22574539 - Comparison of rate assessment between resting heart rate and 24-hour holter monitoring ... 3714159 - Radionuclide cardiac ejection fractions: a useful disparity between lao and lpo views. 2632559 - Multigated radionuclide ventriculography during in-hospital phase of acute myocardial i... 7383109 - Importance of left ventricular chamber size in determining the response to hydralazine ... 7250889 - Comparison of two radionuclide techniques for detecting disease of right and left coron... 6476979 - Cardiac electrophysiological effects of cibenzoline by acute and chronic administration... 15227039 - Direct myocardial revascularization without extracorporeal circulation: technique and i... |
Publication Detail:
|
Type: Case Reports; Journal Article |
Journal Detail:
|
Title: Chest Volume: 75 ISSN: 0012-3692 ISO Abbreviation: Chest Publication Date: 1979 May |
Date Detail:
|
Created Date: 1979-07-25 Completed Date: 1979-07-25 Revised Date: 2004-11-17 |
Medline Journal Info:
|
Nlm Unique ID: 0231335 Medline TA: Chest Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 634-6 Citation Subset: AIM; IM |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Cardiomyopathies / diagnosis*, physiopathology Echocardiography Electrocardiography Heart / physiopathology* Humans Male Myocardial Contraction Pulse* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: False aneurysm of the right atrium.
Next Document: Psoriasis, sacroiliitis, and aortitis: an echocardiographic mimic of aortic root dissection.