From: Rett syndrome: a wide clinical and autonomic picture
Valsalva
Classical
(n = 86)
Z-RTT
(n = 19)
Hanefeld
(n = 12)
Congenital
(n = 1)
ARTT-NOS
(n = 17)
Mean (SD)
5.5 (9.8)
0.6 (0.7)
1.3 (1.9)
0.2 (−)
3 (7.8)
Range
0–53.2
0–2.1
0–6.8
–
0–32.8