6Williams SR,Chouinard P,Arcand G,et al.Ultransound guidance speeds execution and improves the quality of supraclavicular block.Anesth Analg,2003,97:1518-1523.
7Perlas A,Chan VW,Simons M,et al.Brachial plexus examination and localization using ultrasound and electrical stimulation:a volunteer study.Anesthesiology,2003,99:429-435.
8Sia S,Bartoli M,Lepri A,Marchini O,et al.Multiple-injection axillary brachial plexus block:a comparison of two methods of nerve localizationnerve stimulation versus paresthesia.Anesth Analg,2000,91:647-651.
9Fanelli G,Casati A,Garancini P,et al.Nerve stimulator and multiple injection technique for upper and lower limb blockade:failure rate,patient acceptance,and neurologic complications.Study Group on Regional Anesthesia.Anesth Analg,1999,88:847-852.
10Ootaki C,Hayashi H,Amano M.Ultrasound-guided infraclavicular brachial plexus block:an alternative technique to anatomical landmark-guided approaches.Reg Anesth Pain Med,2000,25:600-604.