Table 2.

Ultrasonography findings^a

Measurement	Findings
Preoperative findings
Diameter of cephalic vein or basilic vein, mm	2.69 ± 0.70 (1.6–6.2)
Diameter of RA or UA, mm	2.46 ± 0.46 (1.6–3.65)
Blood flow of RA or UA, ml/min	21.22 ± 15.40 (2.42–100.41)
Blood flow of BA, ml/min	77.75 ± 40.67 (13.45–219.77)
7-d postoperative findings
Blood flow of BA, ml/min	645.1 ± 290.0 (214–1442.7)
Resistance index	0.550 ± 0.107 (0.32–0.82)

BA, brachial artery; RA, radial artery; UA, ulnar artery.

^aData are presented as mean ± SD (range). One patient had a basilic vein, not a cephalic vein, and UA, not RA.