Laser Doppler blood flowmeter as a useful instrument for the early detection of lower extremity peripheral arterial disease in hemodialysis patients: an observational study

Table 2 Measurements of the lower limbs of dialysis patients in the non-PAD and PAD groups

SPP mmHg	PAD (−) (n = 106)		PAD (+) (n = 22)		p
SPP mmHg	mean	sd	mean	sd	p
SPP-Dorsal-Area	82.1	22.0	59.1	20.3	p < 0.0001
SPP-Plantar-Area	80.1	20.2	66.0	24.3	p = 0.0161
LDF	median	quartile range	median	quartile range
LDF-Dorsal-Qb	10.7	(8.4, 14.6)	12.0	(8.1, 16.3)	NS
LDF-Plantar-Qb	30.3	(19.7, 43.5)	21.5	(15.0, 26.8)	p = 0.0019
LDF-Dorsal-PA	3.1	(2.2, 4.2)	2.2	(1.3, 4.2)	NS
LDF-Plantar-PA	7.9	(5.0, 12.2)	5.2	(2.1, 7.3)	p = 0.0031
LDF-Dorsal-PR	77.1	(70.7, 83.3)	79.2	(79.2, 72.9)	NS
LDF-Plantar-PR	74.3	(74.3, 66.6)	78.3	(78.3, 69.9)	NS

Each measurement was performed in the dorsal area and palmar area, and values were indicated as an average of the right and left.
PAD peripheral arterial disease, SPP skin perfusion pressure, D dorsal area of the foot, P plantar area of the foot, LDF laser Doppler flowmetry, saturation, Qb blood flow (mL / min), PA (mL / min), pulse amplitude PR (bpm), pulse rate, NS not significant, CI confidence interval, SD standard deviation
Data are presented mean ± sd, or median (interquartile range)

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