Developing a kinematic understanding of chest compressions: the impact of depth and release time on blood flow during cardiopulmonary resuscitation

Table 4 Physiological outcomes reported by depth and release time from statistical model 4

Measurement	1.25″			1.9″ Depth			p value
Measurement	100 ms	200 ms	300 ms	100 ms	200 ms	300 ms	WF (overall)	Depth
AOP (mmHg)	26.2 ± 1.18	27.0 ± 1.18	26.0 ± 1.18	28.1 ± 1.3	30.16 ± 1.32	27.27 ± 1.3	<0.001	0.0916
RAP (mmHg)	21.05 ± 0.63	21.19 ± 0.63	21.03 ± 0.63	17.12 ± 0.7	17.51 ± 0.66	17.5 ± 0.65	0.0650	<0.001
CPP (mmHg)	2.35 ± 1.16	3.17 ± 1.16	1.92 ± 1.16	9.09 ± 1.26	10.25 ± 1.3	7.91 ± 1.26	<0.001	<0.001
EtCO₂ (mmHg)	22.58 ± 2.71	23.385 ± 2.7	23.84 ± 2.7	31.73 ± 2.9	26.02 ± 3.0	26.47 ± 2.9	0.0045	0.0615
AOR flow (L/comp)*10⁴	5.88 ± 1.55	6.14 ± 1.55	4.84 ± 1.55	7.52 ± 1.62	7.06 ± 1.65	6.63 ± 1.62	0.057	0.309
IVC flow (L/comp)*10⁴	0.88 ± 2.33	2.01 ± 2.33	1.23 ± 2.33	16.27 ± 2.39	14.20 ± 2.40	14.20 ± 2.39	0.067	<0.001
CAR flow (L/comp)*10⁴	2.12 ± 0.36	1.90 ± 0.36	1.66 ± 0.36	4.53 ± 0.39	4.61 ± 0.40	3.64 ± 0.39	<0.001	<0.001
JUG flow (L/comp)*10⁴	115.7 ± 129.0	114.3 ± 129.0	114.5 ± 129.0	198.9 ± 129.9	194.9 ± 130.2	108.3 ± 129.9	<0.001	0.134
RENA flow (L/comp)*10⁴	0.35 ± 0.15	0.30 ± 0.15	0.29 ± 0.15	0.29 ± 0.19	0.30 ± 0.19	0.13 ± 0.19	0.003	0.766
RENV flow (L/comp)*10⁴	0.13 ± 0.11	0.13 ± 0.11	0.03 ± 0.11	0.36 ± 0.12	0.19 ± 0.12	0.26 ± 0.12	0.003	0.079

All flows are reported as mean ± standard error. p values less than 0.05 are in italics
* Q × 10⁴ indicates that all flows (Q) have been multiplied by 10⁴, resulting in units of [100 μL/Comp]. To calculate units of [L/Comp] multiply reported values by 10⁻⁴

ISSN: 1475-925X