Biomedical subjects

R E Steg

Publications and source records attributed to R E Steg.

21 records · Page 2Linked to original sources

PubMed1989

Age-related amplitude variations of the posterior tibial nerve spinal SEP P21 component.

The effects of aging on the amplitude of the surface-recorded tibial nerve spinal somatosensory-evoked potential P21 component (L5-T12 electrode derivation) were studied in 79 subjects. The results of this investigation indicate that a significant moderately negative correlation (r = -0.46) exists between subject age and the amplitude of component P21. These findings suggest that the absence of a P21 potential in an elderly patient does not necessarily represent evidence of neural pathology.

Adolescent↗

PubMed1989

Clinical diagnostic imaging. Cerebral venous thrombosis.

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Adult↗

PubMedDate not supplied

Hyperacute ischemic stroke missed by diffusion-weighted imaging.

We present two cases of hyperacute ischemic stroke that were initially missed by diffusion-weighted imaging; abnormalities in locations corresponding to focal neurologic deficits were discovered by MR angiography and perfusion-weighted imaging. Within hours, follow-up diffusion-weighted scans revealed partial conversion of the hypoperfused regions to complete stroke. These cases illustrate the potential for a nonresolving stroke-in-evolution to go undetected by diffusion-weighted imaging at hyperacute timepoints.

Acute Disease↗