TY - GEN
T1 - Effect of tubing length pump on flow derived index during rotary blood pump support
AU - Khienwad, Thananya
AU - Deepankaew, Ronnachit
AU - Wannawat, Praemai
AU - Naiyanetr, Phornphop
N1 - Publisher Copyright:
© 2017 International Association of Science and Technology for Development - IASTED.
PY - 2017/4/5
Y1 - 2017/4/5
N2 - The variable of connecting tube length (CTL) in rotary blood pumps (RBPs) is normally existed for the external circulatory support and thus eventually incurs the different outcome as compared to the internal circulatory support. This study aims to determine the effect of the various CTL on the measured parameters from RBP. To serve this purpose, a derived indexes from RBP under mock circulatory loop (MCL) were examined. IQ which is a slope of the linear regression between the maximal time derivative of pump flow, dQ/dtmax, and its peak to peak, QP2P, was determined to evaluate the effect of 3 different CTLs; 130, 50 and 10 cm (length of inlet tube), and 130, 50 and 50 cm (length of outlet tube). Moreover, the parameters dH/dtmax, which are the maximal time derivative of pressure head (H); AOP-LVP, and its peak to peak were derived. The slope of a linear regression between dQ/dtmax and dH/dtmax decreased during reduce CTL in contrast to IQ index. Thus, this study proved that IQ index was not significant influenced by a hydraulic resistance (including CTL) and therefore can be used to monitor the cardiac function in case of both external and internal RBP support.
AB - The variable of connecting tube length (CTL) in rotary blood pumps (RBPs) is normally existed for the external circulatory support and thus eventually incurs the different outcome as compared to the internal circulatory support. This study aims to determine the effect of the various CTL on the measured parameters from RBP. To serve this purpose, a derived indexes from RBP under mock circulatory loop (MCL) were examined. IQ which is a slope of the linear regression between the maximal time derivative of pump flow, dQ/dtmax, and its peak to peak, QP2P, was determined to evaluate the effect of 3 different CTLs; 130, 50 and 10 cm (length of inlet tube), and 130, 50 and 50 cm (length of outlet tube). Moreover, the parameters dH/dtmax, which are the maximal time derivative of pressure head (H); AOP-LVP, and its peak to peak were derived. The slope of a linear regression between dQ/dtmax and dH/dtmax decreased during reduce CTL in contrast to IQ index. Thus, this study proved that IQ index was not significant influenced by a hydraulic resistance (including CTL) and therefore can be used to monitor the cardiac function in case of both external and internal RBP support.
KW - Hemodynamic parameter
KW - Mock circulatory loop
KW - Pump flow
KW - Pump speed
KW - Rotary blood pump
KW - Tubing length pump
UR - https://www.scopus.com/pages/publications/85019004723
U2 - 10.2316/P.2017.852-034
DO - 10.2316/P.2017.852-034
M3 - Conference contribution
AN - SCOPUS:85019004723
T3 - Proceedings of the 13th IASTED International Conference on Biomedical Engineering, BioMed 2017
SP - 270
EP - 276
BT - Proceedings of the 13th IASTED International Conference on Biomedical Engineering, BioMed 2017
A2 - Kiss, Rita
A2 - Thurner, Philipp J.
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 13th IASTED International Conference on Biomedical Engineering, BioMed 2017
Y2 - 20 February 2017 through 21 February 2017
ER -