. Author manuscript; available in PMC: 2019 Jul 1.

Published in final edited form as: J Trauma Acute Care Surg. 2018 Jul;85(1):S77–S83. doi: 10.1097/TA.0000000000001837

Table 2.

Hemodynamics during LBNP

	Baseline	−15	−20	−30	−40	−50
MAP (mmHg)
AA	77 ± 4	78 ± 6	79 ± 4	78 ± 4	76 ± 6	77 ± 4
White	74 ± 4	74 ± 4	74 ± 4	73 ± 4	72 ± 4	72 ± 4
SBP (mmHg)
AA	119 ± 6	118 ± 6	119 ± 6	117 ± 4	112 ± 8	111 ± 6
White	117 ± 6	119 ± 6	119 ± 6	115 ± 8	110 ± 6^†	106 ± 6^†
DBP (mmHg)
AA	59 ± 4	60 ± 4	61 ± 4	61 ± 4	60 ± 6	62 ± 4
White	55 ± 4	55 ± 4	56 ± 4	55 ± 4^*	57 ± 4	57 ± 4
HR (bpm)
AA	68 ± 4	68 ± 4	69 ± 4	73 ± 4^†	79 ± 4^†	86 ± 4^†
White	65 ± 4	65 ± 4	67 ± 4	71 ± 4^†	79 ± 6^†	86 ± 6^†
CRM
AA	0.90 ± 0.02	0.85 ± 0.02^†	0.81 ± 0.02^†	0.65 ± 0.02^†	0.48 ± 0.04^†	0.34 ± 0.04^†
White	0.91 ± 0.02	0.82 ± 0.02^*^†	0.77 ± 0.02^*^†	0.60 ± 0.02^*^†	0.44 ± 0.04^*^†	0.28 ± 0.04^*^†

LBNP, lower body negative pressure; MAP, mean arterial pressure; SBP, systolic blood pressure; DBP, diastolic blood pressure; HR, heart rate; CRM, compensatory reserve measure. Mean ± 95% Confidence Interval.

P≤0.05 vs. AA.

^†

P≤0.05 vs. Baseline.