Plasma metabolomic profile in orthostatic intolerance children with high levels of plasma homocysteine

Table 5 Hemodynamic indices of VVS patients in the HUTT

Characteristics	Special group	Common group	χ²/t	P value
Cases, n	10	13	-	-
VVS-VI/CI/M, n	7/0/3	8/1/4	0.832	0.660^a
sHR, bpm	73.20 ± 15.17	73.85 ± 12.29	−0.113	0.911^b
max-uHR, bpm	125.40 ± 11.10	110.46 ± 19.78	2.136	0.045^{b, *}
△HR, bpm	52.20 ± 17.29	36.62 ± 17.94	2.098	0.048^{b, *}
△HR/sHR × 100%, %	76.49 ± 31.71	51.36 ± 26.02	2.089	0.049^{b, *}
sSBP, mmHg	111.30 ± 12.00	113.46 ± 7.21	−0.538	0.597^b
min-uSBP, mmHg	85.60 ± 10.58	91.08 ± 5.58	−1.607	0.123^b
△SBP, mmHg	−25.70 ± 13.28	−22.38 ± 9.01	−0.713	0.483^b
△SBP/sSBP × 100%, %	−22.56 ± 10.73	−19.43 ± 7.10	−0.842	0.409^b
sDBP, mmHg	63.10 ± 4.84	64.85 ± 6.15	−0.738	0.469^b
min-uDBP, mmHg	39.70 ± 8.37	43.92 ± 9.26	−1.130	0.271^b
△DBP, mmHg	−23.40 ± 10.44	−20.92 ± 10.02	−0.577	0.570^b
△DBP/sDBP × 100%, %	−36.58 ± 15.44	−31.90 ± 14.36	−0.750	0.462^b

Values represent n, mean SD, or median (interquartile range). HUTT, head-up tilt test; VVS, vasovagal syncope; VI, vasoinhibitory type; CI cardioinhibitory type; M mixed type; sHR, mean supine heart rate; max-uHR, maximum upright heart rate; △HR, change in heart rate from the supine to the upright position (max-uHR– sHR); △HR/sHR × 100%, rate of change in heart rate from the supine to the upright position; sSBP, mean supine systolic blood pressure; min-uSBP, minimum upright systolic blood pressure; △SBP, change in systolic blood pressure from the supine to the upright position (min-uSBP– sSBP); △SBP/sSBP × 100%, rate of change in systolic blood pressure from the supine to the upright position; sDBP, mean supine diastolic blood pressure; min-uDBP, minimum upright diastolic blood pressure; △DBP, change in diastolic blood pressure from the supine to the upright position (min-uDBP– sDBP); △DBP/sDBP × 100%, rate of change in diastolic blood pressure from the supine to the upright position; a, chi-square test; b, independent-samples Student’s t test; ^*P < 0.05 vs. the common group

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