International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2004
Median and ulnar nerve conduction in pregnancy.
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Eogan M, O'Brien C, Carolan D, Fynes M, O'Herlihy C
Аннотация
OBJECTIVE: A prospective, observational study assessed median and ulnar nerve conduction during pregnancy, to identify the optimum test for differentiating physiological effects of pregnancy from pathological carpal tunnel syndrome (CTS).
METHODS: Pregnant women (n=18) and age- and parity-matched non-pregnant controls (n=13) were recruited. Symptomatic and neurophysiological evaluations were performed. Median and ulnar nerve latencies and intrapalmar latency (difference between median and ulnar nerve latencies) were computed.
RESULTS: Median nerve distal latency is more prolonged in pregnant women compared with non-pregnant controls. Median nerve latency is more prolonged in pregnant women with symptoms of CTS than in asymptomatic women. The difference between median and ulnar nerve conduction (normal <0.2 ms) discriminates well between symptomatic and asymptomatic pregnant women.
CONCLUSIONS: Intrapalmar latency is proposed as a useful diagnostic test for classification of carpal tunnel syndrome during pregnancy.
METHODS: Pregnant women (n=18) and age- and parity-matched non-pregnant controls (n=13) were recruited. Symptomatic and neurophysiological evaluations were performed. Median and ulnar nerve latencies and intrapalmar latency (difference between median and ulnar nerve latencies) were computed.
RESULTS: Median nerve distal latency is more prolonged in pregnant women compared with non-pregnant controls. Median nerve latency is more prolonged in pregnant women with symptoms of CTS than in asymptomatic women. The difference between median and ulnar nerve conduction (normal <0.2 ms) discriminates well between symptomatic and asymptomatic pregnant women.
CONCLUSIONS: Intrapalmar latency is proposed as a useful diagnostic test for classification of carpal tunnel syndrome during pregnancy.