Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
HEMODYNAMIC CORRELATES OF EFFECTIVE ARTERIAL ELASTANCE IN MITRAL-STENOSIS BEFORE AND AFTER BALLOON VALVOTOMY
Autore:
COLIN P; SLAMA M; VAHANIAN A; LECARPENTIER Y; MOTTE G; CHEMLA D;
Indirizzi:
HOP ANTOINE BECLERE,SERV CARDIOL,15 RUE PORTE TRIVAUX F-92141 CLAMARTFRANCE ECOLE POLYTECH,INSERM U451,LOA,ENSTA F-91125 PALAISEAU FRANCE HOP BICETRE,SERV PHYSIOL CARDIORESP F-94275 LE KREMLIN BICETR FRANCE HOP TENON,SERV CARDIOL F-75970 PARIS FRANCE
Titolo Testata:
Journal of applied physiology
fascicolo: 4, volume: 83, anno: 1997,
pagine: 1083 - 1089
SICI:
8750-7587(1997)83:4<1083:HCOEAE>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
VENTRICULAR EJECTION PERFORMANCE; PRESSURE; COMMISSUROTOMY; HUMANS; ADULTS;
Keywords:
AORTA; ARTERIAL LOAD; ARTERIAL WAVE REFLECTIONS; ARTERIAL COMPLIANCE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
30
Recensione:
Indirizzi per estratti:
Citazione:
P. Colin et al., "HEMODYNAMIC CORRELATES OF EFFECTIVE ARTERIAL ELASTANCE IN MITRAL-STENOSIS BEFORE AND AFTER BALLOON VALVOTOMY", Journal of applied physiology, 83(4), 1997, pp. 1083-1089

Abstract

This study had the purpose of documenting the hemodynamic correlates of effective arterial elastance (Ea; i.e., an accurate estimate of hydraulic load) in mitral stenosis (MS) patients. The main hypothesis tested was that Ea relates to the total vascular resistance (R)-to-pulse interval duration (T) ratio (R/T) in MS patients both before and aftersuccessful balloon mitral valvotomy (BMV). High-fidelity aortic pressure recordings were obtained in 10 patients (40 +/- 12 yr) before and 15 min after BMV. Ea value was calculated as the ratio of the steady-state end-systolic aortic pressure (ESAP) to stroke volume (thermodilution). Ea increased after BMV (from 1.55 +/- 0.63 to 1.83 +/- 0.71 mmHg/ml; P < 0.05). Throughout the procedure, there was a strong linear relationship between Ea and R/T: Ea = 1.09R/T - 0.01 mmHg/ml, r = 0.99, P = 0.0001. This ultimately depended on the powerful Link between ESAPand mean aortic pressure [MAP; r = 0.99, 95% confidence interval for the difference (MAP - ESAP) from - 18.5 to + 4.5 mmHg]. Ea was also related to total arterial compliance (area method) and to wave reflections (augmentation index), although to a lesser extent. After BMV, enhanced and anticipated wave reflections were observed, and this was likely to be explained by decreased arterial compliance. The present study indicated that Ea depended mainly on the steady component of hydraulicload (i.e., R) and on heart period (i.e., T) in MS patients.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 20:09:49