. Author manuscript; available in PMC: 2012 Oct 1.

Published in final edited form as: J Pediatr. 2011 May 19;159(4):656–662.e1. doi: 10.1016/j.jpeds.2011.04.006

Table 1.

Supine baseline absolute values and percent change baseline during and after tilt for fainters and control subjects.

Absolute Values Measurement (units)	Baseline		Δ % from Baseline	Stable Tilt		Faint	End Tilt	Early Post-Tilt		Late Post-Tilt
Absolute Values Measurement (units)	Fainters	Controls	Measurement (Δ%)	Fainters	Controls	Fainters	Controls	Fainters	Controls	Fainters	Controls
MAP(mmHg)	80±2	83±2	MAP	7±3 *	0.3±1	−49±3 ^‡	−6±3	−9±6	−6±2	−1±3	1±2
SBP mmHg)	116±3	122±2	SBP	1±2	−3±1	−48±3 ^‡	−9±3	−10±4	−7±3	−2±2	1±2
DBP(mmHg)	63±2	64±2	DBP	13±4 *	2±2	−50±3 ^‡	−3±3	−8±6	−6±2	−1±2	0±1
PP(mmHg)	53±3	58±2	PP	−12±3	−10±1	−45±2 ^‡	−15±4	−13±5	−7±4	−3±3	−1±1
HR(bpm)	68±2	65±2	HR	46±4 ^†	33±2	−15±5 ^‡	35±4	20±6	9±3	7±3	1±2
CO (L/Min)	4±0.5	5±0.3	CO	2±5	1±4	−53±7^‡	−0.1±5	14±8	6±5	1±3	1±2
Resp. Rate (breaths*min⁻¹)	18±1	16±1	Resp. Rate	9±4 *	−11±7	30±15 *	3±9	16±9	6±5	5±3	2±3
ETCO2(mmHg)	43±1	44±1	ETCO2	−7±1	−7±2	−23±3 ^‡	−8±2	−10±2 ^‡	1±2	1±2	2±1
Mean CBFV(cm/sec)	78±3	78±3	Mean CBFV	−11±2	−10±1	−46±3 ^‡	−12±2	−13±3 *	−2±1	−1±2	−1±2
Systolic CBFV (cm/sec)	116±4	115±4	Systolic CBFV	−11±2	−11±1	−11±8	−11±2	14±3 ^†	−2±2	3±3	1±3
Diastolic CBFV(cm/sec)	54±3	55±2	Diastolic CBFV	−7±2	−5±2	−66±3 ^‡	−8±3	−21±4 ^†	−8±3	−6±4	−3±1
Pulsatile CBFV(cm/sec)	62±3	61±2	Pulsatile CBFV	−15±3	−15±2	38±13 ^†	−12±3	23±6 *	4±2	3±2	1±2
CVRi(mmHg/cm/sec)	1.1±0.1	1.2±0.1	CVRi	−2±5	−8±3	−43±7^‡	−12±4	3±6	−3±2	2±5	2±4

MAP, mean arterial pressure. SBP, systolic blood pressure. DBP, diastolic blood pressure. PP, pulse pressure. HR, heart rate. CO, cardiac output. Resp. Rate, respiratory rate. ETCO2, end-tidal CO₂. CBFV, cerebral blood flow velocity. CVRi, cerebrovascular resistance index.