. Author manuscript; available in PMC: 2018 Dec 1.

Published in final edited form as: J Artif Organs. 2017 Apr 8;20(4):381–385. doi: 10.1007/s10047-017-0958-5

Table 1.

Hemodynamics with Pump Speed Modulation

Speed modulation [±%]	Speed (mean) [rpm]	Pump flow (mean) [L/min]	AoP (mean) [mm Hg]	AoP (pulse) [mm Hg]	AoP (dP/dt) [mm Hg/sec]	Pulsatility Index	EEP [mm Hg]	SHE [ergs/cm]	PAP (mean) [mm Hg]	PAP (pulse) [mm Hg]
0	3,060	9.4 ± 1.1	91.6 ± 6.4	5.6 ± 2.2	67 ± 23	0.18 ± 0.06	91.6 ± 6.4	9 ± 19	32.5 ± 7.7	9.6 ± 3.7
15	3,010	9.8 ± 1.1	89.9 ± 4.2	12.0 ± 4.1^*	91 ± 27	1.05 ± 0.14^†	90.9 ± 4.5	1,346 ± 479^*	32.3 ± 7.9	12.3 ± 0.5
25	3,020	10.4 ± 1.5	88.9 ± 4.6	15.9 ± 5.3^*	121 ± 28^*	1.51 ± 0.20^†	91.5 ± 5.7	3,381 ± 1,477^*	31.8 ± 8.5	15.7 ± 0.8^*

AoP, systemic arterial pressure (obtained from a catheter within the carotid artery); dP/dt, the first derivative of the pressure; EEP, energy-equivalent pressure; SHE, surplus hemodynamic energy; PAP, pulmonary arterial pressure.

p < 0.05 compared with 0% speed modulation.

^†

p < 0.01 compared with 0% speed modulation.