Ventricular interdependence during Valsalva maneuver as seen by two-dimensional echocardiography: new insights about an old method.

Détails

ID Serval
serval:BIB_BC87546E20C0
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Ventricular interdependence during Valsalva maneuver as seen by two-dimensional echocardiography: new insights about an old method.
Périodique
Journal of the American Society of Echocardiography
Auteur⸱e⸱s
Aebischer N., Malhotra R., Connors L., Kappenberger L., Parisi A.F.
ISSN
0894-7317
Statut éditorial
Publié
Date de publication
1995
Peer-reviewed
Oui
Volume
8
Numéro
4
Pages
536-542
Langue
anglais
Notes
Journal Article Research Support, Non-U.S. Gov't --- Old month value: Jul-Aug
Résumé
Two-dimensional echocardiography was used in 15 normal volunteers to assess left (LV) and right ventricular (RV) responses, as well as their interdependence, during the Valsalva maneuver. During the strain phase, LV and RV areas decreased progressively, the RV area decreasing more than the LV area. Immediately after strain release, the RV end-diastolic area increased suddenly and dramatically to 143.3% +/- 9.4% of its baseline value, whereas the LV end-diastolic area decreased further. This transiently overloaded right ventricle and associated septal shift changed LV shape and further reduced the LV cross-sectional area. Thus the resulting momentary drop in the stroke LV area may contribute, along with pulmonary blood pooling, to the abrupt systemic blood pressure drop characteristic of phase III seen in normal subjects. Real-time imaging with echocardiography during respiratory maneuvers is feasible for clinical use. Its application in patients with congestive heart failure might bring further understanding of LV and RV interrelationships in the failing heart.
Mots-clé
Adult, Echocardiography, Female, Heart Rate, Humans, Male, Middle Aged, Valsalva Maneuver, Ventricular Function
Pubmed
Création de la notice
28/01/2008 9:45
Dernière modification de la notice
20/08/2019 15:30
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