[The reliability of somatosensory evoked potentials in the diagnosis of thoracic outlet syndrome]. / Somatosensoriyel uyarilmis potansiyellerin torasik çikis sendromu tanisinda güvenilirligi.

OBJECTIVES: We assessed the role of somatosensory evoked potentials (SEP) in the diagnosis of thoracic outlet syndrome. METHODS: Somatosensory evoked potentials were recorded in provocative and decompressing positions in 30 patients (28 females, 2 males; mean age 32 years; range 20 to 52 years) with a diagnosis of thoracic outlet syndrome and in 30 healthy subjects showing a similar age and sex distribution. RESULTS: All recordings yielded normal ranges in both groups. No statistically significant differences were found between the positions in which SEPs were recorded and between the patient and control groups. CONCLUSION: Our data suggest that SEPs do not give diagnostic information in the identification of thoracic outlet syndrome.

Diabetic gastroparesis in association with autonomic neuropathy and microvasculopathy.

Gastroparesis is a frequent and sometimes life-threatening complication of diabetes mellitus. Autonomic neuropathy seems to be one of the most important mechanisms underlying this entity, together with the other probable pathologies. The present study was performed in order to identify an alternative to gastric scintigraphy as a screening test. The gastric emptying times of 60 subjects (Group 1: 20 insulin-dependent patients, Group 2: 20 non-insulin-dependent diabetes mellitus patients, and Group 3: 20 healthy volunteers) were monitored by gastric scintigraphy. Perception thresholds for cold, heat, and vibration were tested by a quantitative sensory test, and QTc dispersions were calculated from standard electrocardiography recordings. In addition, fasting blood glucose, hemoglobin A1c and urine beta2-microglobulin and microalbumin concentrations were determined for the patient groups. Funduscopic examination was performed by an independent ophthalmologist. Gastroparesis was determined in both patient groups, regardless of fasting blood glucose and hemoglobin A1c concentrations. A strong correlation was observed between nephropathy, retinopathy, and cardiac autonomic denervation (QTc) and gastroparesis. In conclusion, retinal and renal microvasculopathy parameters and cardiac autonomic function tests may be useful for screening diabetic patients for gastroparesis.