SPLIT-CIRCULATION ASSIST DEVICE FACILITATES HEART-FAILURE MANAGEMENT AND INCREASES EFFECTS OF INTRAAORTIC BALLOON PUMPING

Citation
F. Miyawaki et al., SPLIT-CIRCULATION ASSIST DEVICE FACILITATES HEART-FAILURE MANAGEMENT AND INCREASES EFFECTS OF INTRAAORTIC BALLOON PUMPING, ASAIO journal, 44(5), 1998, pp. 628-633
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Engineering, Biomedical
Journal title
ISSN journal
1058-2916
Volume
44
Issue
5
Year of publication
1998
Pages
628 - 633
Database
ISI
SICI code
1058-2916(1998)44:5<628:SADFHM>2.0.ZU;2-6
Abstract
The split-circulation assist device (SCAD) comprises an intraaortic ba lloon pump (IABP), percutaneous cardiopulmonary support (PCPS) equipme nt, and two occlusion balloons that occlude the descending thoracic ao rta by alternate inflation. With the SCAD, the failing heart, assisted by IABP, maintains only the upper 25-30% of the entire circulation wi thout any interference by bypass flow from PCPS. An animal experiment indicated that a given rise in cardiac output caused an increase in ao rtic pressure in the SCAD group about three times greater than that in the control group tan ordinary combination of IABP and PCPS). Thus, b y causing greater increases in arterial pressure, the SCAD may make po ssible detection of subtle increases in cardiac output, and therefore early detection of cardiac recovery. Multiple regression analysis from the pressure and flow data obtained in another experiment indicated t hat the SCAD facilitated the prediction of cardiac outputs and loads b y preventing the bypass flow rate from influencing the aortic pressure . In addition, the SCAD may enhance cardiac assistance by increasing t he effects of IABP. Therefore, the SCAD is a useful and potent new cir culatory assist device that can facilitate both timely weaning from PC PS and heart failure management.