<?xml version='1.0' encoding='UTF-8'?><xml><records><record><source-app name="HighWire" version="7.x">Drupal-HighWire</source-app><ref-type name="Journal Article">17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Husain, Ashraf</style></author><author><style face="normal" font="default" size="100%">Omar, Syed A.</style></author><author><style face="normal" font="default" size="100%">Habib, Syed S.</style></author><author><style face="normal" font="default" size="100%">Al-Drees, Abdul-Majeed</style></author><author><style face="normal" font="default" size="100%">Hammad, Durdana</style></author></authors><secondary-authors></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">F-ratio, a surrogate marker of carpal tunnel syndrome</style></title><secondary-title><style face="normal" font="default" size="100%">Neurosciences Journal</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2009-01-01 00:00:00</style></date></pub-dates></dates><pages><style  face="normal" font="default" size="100%">19-24</style></pages><volume><style face="normal" font="default" size="100%">14</style></volume><issue><style face="normal" font="default" size="100%">1</style></issue><abstract><style  face="normal" font="default" size="100%">OBJECTIVE: To explore the correlation of F-ratio and F-wave minimal latency (FWML) in carpal tunnel syndrome (CTS).METHODS: This retrospective study was conducted from January 2006 to January 2007 at the clinical physiology lab, King Abdul-Aziz University Hospital, Riyadh, Saudi Arabia. Motor and sensory nerve conduction studies, FMW latencies of median and ulnar nerves, and F-ratio were carried out in 54 CTS patients and 30 controls.RESULTS: Out of 54 CTS patients, there were 14 were males (26%), and 40 females (74%), CTS was bilateral in 32 (59%), and unilateral in 22 (41%) patients. Fifty-one patients (94.4%) had involvement of the right hand, 28 patients (51.8%) had dyslipidemia and 20 patients (37%) had hypertension. The FWML (ms) in the right median nerve was 25.46+/-2.2, and 25.79+/-1.7 in the right ulnar nerve in the control group (p=0.5224), while it was 29.1+/-3.35 in the right median nerve and 26.46+/-4.35 in the right ulnar nerve in patients with CTS (p=0.0008). A similar statistically significant increase in the median nerve latency was observed in the left hand. A statistically significant reduction in the F-ratio was found consistently in all patients with CTS in both the hands (p=0.0001).CONCLUSION: The present study reveals prolongation of FWML in the median nerve, and a statistically significant reduction of F-ratio in all CTS patients. A significant inverse correlation was found between FWML and F-ratio in CTS patients. Both FWML and F-ratio support the diagnosis of CTS.</style></abstract></record></records></xml>