Table XIXs.

Perineal sympathetic skin response in spinal cord and cauda equina lesions.

Reference	Objective	No. of patients	Sex	Stimulation technique	Recording site	Results	Evidence
Courtois et al., 1998	To assess the relationship between the pSSR, lesion level and PE in chronic SCI	54	M	Supralesional electrical	Genital skin	Ab/↑ Lat: 73% in lesions above TL, 50% at TL, 23% below TL level	Class 2
Rodic et al., 2000	To assess the relationship between the pSSR, lesion level/completeness and bladder function in patients with chronic SCI or cauda lesions	90	70M	Median nerve electrical	Perineal skin	Ab: 100% in lesions above TL, 60% at TL (CLs) level; N: 100% in cauda lesions	Class 2
Schmid et al., 2003	To assess the relationship between the pSSR, lesion level and EDs in chronic SCI	32	M	Median nerve electrical	Perineal skin	Ab: 82% in lesion above TL, 20% in lesion at or below T12 level	Class 2
Tas et al., 2007	To assess the relationship between the pSSR, lesion level and sexual dysfunctions in chronic SCI	25	17M	Median nerve electrical	Perineal skin	Ab: 64% in lesion levels above TL (CLs), 8% in lesion at or below T12 level	Class 3
Secil et al., 2007	To assess the diagnostic value of the pSSR in MS and the relationship between the pSSR and sexual disorders	40	F	Median nerve electrical	Perineal skin	Ab/↑ Lat/↓ Amp: 50%	Class 2

Abbreviations: pSSR=perineal sympathetic skin response; PE=psychogenic erection; EDs=erectile dysfunctions; SCI=spinal cord injury; MS=multiple sclerosis; M=male; F=female; Ab=absent response; Lat=latency; Amp=amplitude; TL=thoracolumbar; CLs=complete lesions; N=normal results.