Síndrome del túnel carpiano en 4 embarazadas. Controversia entre electrofisiología y ecografía

Carpal tunnel syndrome (CTS) is a mononeuropathy often associated with pregnancy. This has been related to oedema caused by natriuresis and with newly formed tissue secondary to inflammation and collagenosis. Diagnosis is based on clinical and electrophysiological (EDX) features, and recently by ultrasonography. We describe 4 women who developed CTS in their last months of pregnancy. We studied the clinical, EDX and ultrasonographic features. The clinical and EDX evaluation showed mild CTS in two patients, and moderate CTS in the other two. The ultrasonographic examination demonstrated substantial enlargement, usually related to moderate or severe CTS. Unlike findings in the general population, the clinical and EDX parameters were not well correlated with ultrasonographic findings to specify the true severity of CTS in our patients. In this group of patients, we should probably assume that ultrasonographic parameters should be treated with caution.