Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
A COMPUTER-CONTROLLED AORTIC AND MITRAL-VALVE OCCLUDER
Autore:
SOLOMON SB; NIKOLIC SD; FRATER RWM; YELLIN EL;
Indirizzi:
UNIV CALIF SAN FRANCISCO,CARDIOVASC RES INST SAN FRANCISCO CA 94143 ALBERT EINSTEIN COLL MED,DEPT CARDIOTHORAC SURG BRONX NY 00000 ALBERT EINSTEIN COLL MED,DEPT PHYSIOL & BIOPHYS BRONX NY 10467
Titolo Testata:
Annals of biomedical engineering
fascicolo: 1, volume: 25, anno: 1997,
pagine: 172 - 179
SICI:
0090-6964(1997)25:1<172:ACAAMO>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
VENTRICULAR FILLING DYNAMICS; CANINE LEFT-VENTRICLE; DIASTOLIC FUNCTION; RELAXATION; HEART;
Keywords:
VENTRICULAR RELAXATION; AFTERLOAD; MITRAL FILLING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
S.B. Solomon et al., "A COMPUTER-CONTROLLED AORTIC AND MITRAL-VALVE OCCLUDER", Annals of biomedical engineering, 25(1), 1997, pp. 172-179

Abstract

To study cardiac mechanics, it is important to study the beat-to-beatchanges in the heart. Left ventricular diastolic filling properties are determined by a passive component and an active component due to ventricular relaxation that occur simultaneously. To separate the activeand passive components of ventricular filling, we designed a computer-controlled mitral valve occluder that prevents left ventricular filling. A computer-controlled aortic occluder was designed to change afterload conditions that could affect the components of ventricular filling. Experiments in six dogs demonstrated that these devices effectivelycontrol ventricular inflow and ejection on a beat-to-beat basis. The computer-controlled aortic and mitral occluders have a more accurate triggering and occlusion timing system than the previously reported techniques. This computer-controlled device enabled us to separate the passive component of filling from the active component, ventricular relaxation, and to alter afterload simultaneously, which will allow us to develop a better understanding of how ventricular filling and ejectionis controlled on a beat-to-beat basis.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/10/20 alle ore 16:17:51