Table 2 –

Haemodynamic and physiologic parameters for Study B comparing two elevation of the head and thorax sequences during active compression-decompression cardiopulmonary resuscitation with an impedance threshold device. All values are presented as mmHg ± SD.

Study B (n=12)	Baseline		6 Minutes CPR		11 Minutes CPR		17 Minutes CPR
	20, 30, 40	40, 30, 20	20, 30, 40	40, 30, 20	20, 30, 40	40, 30, 20	20, 30, 40	40, 30, 20
ITP Dec	2.8 ±0.6	3.5 ±0.7	−5.9 ±1.0	−3.7 ± 2.0	−4.2 ±1.4	−2.5 ±1.3	2.4 ± 1.5	−4.0 ± 2.4
AO Com/Dec	84 ±9/70 ±9	79 ±10/64 ±7	69 ± #45 ± 8	60± 12/30± 10	77 ± 11/50 ±14	61 ±18/34 ±17	85 ± 18^56 ± 18	61 ± 16/38 ± 15
RA ConVDec	5.3 ± 1.9/62 ±1.8	5.4 ± 1.9/6.4 ±1.9	56 ± 5/7.6 ± 1.8	94 ±15/6.1 ± 2.6	65 ±7/6.1 ± 1.4	82 ±25/6.1 ± 1.4	79 ±14/6.0 ± 2.0	69 ± 13/5.0 ± 3.0
I CP ConVDec	152 ±8.8	16.7 ± 1.8	172 ±5.6	16.7 ± 3.4	14.8 ±4.7	15.6±2.5	11.3 ± 5.3	15.7 ± 3.6
CorPP	63.4 ±8.7	57.7 ±7.3	37.6 ±8.8	23.8 ±11.3	43.9 ± 14.6	28.4 ± 18.1	49.7 ± 17.1	32.5 ± 16.9
CerPP Mean	61.4 ±14.1	60.9 ±10.2	46.4 ± 9.7	34.5 ± 12.6	57.4 ± 11.3	39.7 ± 18.2	68.2 ±17.0	40.3±18.5
EtC02 Mean	44.4 ± 2.7	42.5 ±0.7	50.1 ± 6.4	48.5 ± 4.3	52.1 ± 6.6	49.3±3.6	52.5 ±4.6	48.7 ± 4.2