Title :
Monitoring development of suction in an LVAD
Author :
Liu, Dehou ; Boston, J.R. ; Lin, Hui-Hung ; Antaki, J.F. ; Simaan, M.A. ; Wu, Jon
Author_Institution :
Pittsburgh Univ., PA, USA
Abstract :
Excessive speed in rotary ventricular assist pumps can create negative pressure, or suction, in the left ventricle (LV). This study evaluated several parameters derived from pump current as indicators of suction and tested them using hemodynamic data from calves. A normalized 2nd harmonic parameter and variance of the current waveform showed the most consistent changes, approaching minimum as suction developed
Keywords :
biocontrol; cardiovascular system; flow control; haemodynamics; harmonic analysis; method of moments; prosthetics; pulsatile flow; pumps; waveform analysis; calves; current waveform variance; hemodynamic data; left ventricle assist device; moment analysis; normalized second harmonic parameter; pulsatility; pump current; rotary ventricular assist pumps; suction development monitoring; Analysis of variance; Blood; Condition monitoring; Data analysis; Harmonic analysis; Hemodynamics; Psychology; Shape; Testing; Transducers;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802294
