Syncope Due to Impending Cardiac Tamponade in Hashimoto's Thyroiditis.

Unlabelled: Pericardial effusion develops in 25 to 35% of patients with severe hypothyroidism. These effusions can be large, but rarely if ever cause tamponade. We report here a 36-year-old woman who presented with recurrent syncopal attack, which turned out to be a case of Hashimoto's thyroiditis complicated by massive pericardial effusion with impending tamponade.

A long-term analysis of the spinal somatosensory evoked potential of rats with sciatic constriction injury.

Background: This study was undertaken to evaluate the long-term effect of a peripheral neuropathic pain model, chronic constriction injury (CCI) of the sciatic nerve, through analyses of electrophysiologic change, sciatic nerve function, and pain behavior.

Methods: CCI of the sciatic nerve was induced in twelve rats as described by Bennett and Xie. Three parameters were monitored: spinal somatosensory evoked potential (SSEP) elicited by supramaximal stimulation of the posterior tibial nerve and recorded from the thoracolumbar junctional space; thermal hyperalgesia assessed by measuring paw withdrawal latency (PWL); and sciatic function index (SFI).