Nuckols D A, Tsue T T, Toby E B, Girod D A
Department of Otolaryngology-Head and Neck Surgery, University of Kansas School of Medicine, Kansas City, Kansas 66160, USA.
Otolaryngol Head Neck Surg. 2000 Nov;123(5):553-7. doi: 10.1067/mhn.2000.110728.
The conventional subjective Allen's test (SAT) can be problematic because of its subjective nature. The objective Allen's test (OAT) was used before surgery to reliably and objectively assess forearm vascular flow in anticipation of harvesting a radial forearm free flap (RFFF) for use in head and neck reconstruction.
Retrospective analysis of 65 patients undergoing both preoperative SAT and OAT was completed at the University of Kansas Medical Center between December 1994 and March 1998.
The sensitivity and specificity of the SAT compared with the sensitivity and specificity of the OAT were only 65% and 76%, respectively. In 40 patients with at least 1 forearm with a positive SAT, only 1 (2.5%) patient was found by OAT to have vasculature that would not have allowed safe RFFF harvest in either forearm. In contrast, of the 25 patients with equivocal or negative SAT results in both arms, 18 (72%) were found by OAT to be safe candidates for RFFF harvests.
The OAT is an objective measure of forearm vascular flow and is superior to conventional SAT in RFFF donor-site selection.
传统的主观艾伦试验（SAT）因其主观性可能存在问题。术前采用客观艾伦试验（OAT），以可靠、客观地评估前臂血流情况，为切取游离桡侧前臂皮瓣（RFFF）用于头颈部重建做准备。
1994年12月至1998年3月期间，在堪萨斯大学医学中心对65例同时接受术前SAT和OAT的患者进行了回顾性分析。
SAT的敏感性和特异性与OAT的敏感性和特异性相比，分别仅为65%和76%。在40例至少有1侧前臂SAT结果为阳性的患者中，OAT仅发现1例（2.5%）患者的血管情况不允许在前臂任何一侧安全切取RFFF。相比之下，在双臂SAT结果为可疑或阴性的25例患者中，OAT发现18例（72%）是RFFF切取的安全候选者。
OAT是前臂血流的客观测量方法，在RFFF供区选择方面优于传统的SAT。
