Influence of temperature on sonographic images of the median nerve for the diagnosis of carpal tunnel syndrome: a case control study

Table 4 Comparison of Doppler findings of ulnar artery between hands with carpal tunnel syndrome (CTS) and healthy hands

Variables	Patients with CTS (hands = 84)		Healthy volunteer (hands = 97)		p value^a
Variables	Mean	SD	Mean	SD	p value^a
Resistive index
30 °C	0.95	0.12	0.94	0.17	0.94
32 °C	0.9	0.13	0.91	0.15	0.36
34 °C	0.88	0.17	0.89	0.14	0.40
p value^b	0.0039		0.0350
TAMEAN (cm/s)
30 °C	5.26	3.55	4.61	3.49	0.37
32 °C	4.27	3.90	3.60	3.10	0.32
34 °C	6.86	4.52	6.86	4.60	0.87
p value^b	< 0.0001		< 0.0001

TAMEAN, Time-averaged mean velocity
^aComparison of differences between groups after adjusting for age and gender (generalized estimating equation)
^bComparison of differences within group among 30 °C, 32 °C, 34 °C (repeated measures analysis of variance)

ISSN: 1471-2342