Table 3.

Capillary structure and function in pediatric HD patients

Nailfold capillary density (capillaries/mm2)
	Basal	Post-hyperemia	Maximal post-venous occlusion	P values*
HD patients—Initial	19.2 ± 5.2	21.0 ± 5.6	25.1 ± 6.3	<0.01
—6 months	18.3 ± 5.2	19.9 ± 6.0	22.8 ± 7.6	<0.01
Controls	24.6 ± 7.8	26.6 ± 7.3	31.8 ± 8.4	<0.01
P-value**	<0.01	<0.01	<0.01	<0.001
Capillary function
	% Recruitment		% Perfusion
HD patients—Initial	13.3 ± 16		84.4 ± 14
—6 months	10.1 ± 11		88.2 ± 11
Controls	11.6 ± 15		84.2 ± 11
P-values**	0.38		0.53

*Maximal versus basal and post-hyperemia.

**Controls versus HD patients.