Relación de la electromiografía con la ultrasonografía en el síndrome de túnel carpiano

Abstract

Objectives: to analyze the concordance between the electromyographic results and the ultrasound results obtained in patients with clinical suspicion of carpal tunnel syndrome (CTS), to establish a clinical echographic and nerve conduction relation of the cases studied and to determine the ultrasound pattern with the highest degree of relation with the symptoms of CTS. Method: Cross-sectional, descriptive and correlational study carried out at the REUMACEB Arthritis Clinic in the city of Quito. The data were obtained from medical records compatible with a diagnosis of CTS during the pandemic period from February 2020 to December 2020. Results: 40 patients were examined, 85% women; the mean age was 59.3 years. The median nerve cross-sectional area (NNMA) was 13 mm2 for the right carpus and 12.15 mm2 for the left carpus. In the EMG the right carpus was reported as the most frequent in presenting serious affectation 35%, 42.5% did not present axonal sensory damage and 90% did not present sensory motor damage. When comparing the degree of involvement of the right and left carpus, statistically significant differences were found (p = 0.04); and when comparing the degree of sensory involvement in relation to the ACTNM, significant differences were also found (p = 0.008). Conclusions: US of the median nerve appears to be a promising method in the diagnosis of CTS; when evaluating anatomical changes of the median nerve in patients with suggestive clinical signs and symptoms. More studies with larger series are needed to confirm our preliminary results.