Gabapentin Relieves Vertigo of Periodic Vestibulocerebellar Ataxia: 3 Cases and Possible Mechanism.

Objective: The aim of this study was to report relief of optokinetic-triggered vertigo (OKTV) with low-dose gabapentin in three patients with periodic vestibulocerebellar ataxia [episodic ataxia type 4 (EA4); OMIM 606552].

Methods: Clinical observations and analysis of video-recorded eye movements were used before and after gabapentin.

Results: Gabapentin relieved vertigo of all three treated patients with EA4, particularly during activities that typically would induce vertiginous symptoms.

Central retinal artery occlusion during cardiac catheterization.

A massive embolus of the central retinal artery occurred during cardiac catheterization and selective coronary angiography. Anterior chamber paracentesis and coughing resulted in restoration of retinal blood flow and vision within two hours. In two other cases retinal arteriolar embolization was observed in patients who had minimal or no ocular symptoms after cardiac catheterization.

Computerized radiology of the colon: a potential screening technique.

We report here a new technique, computerized radiology of the colon. This technique consists of digital radiography of the colon combined with colon CT utilizing only air as a contrast agent. This technique is capable of detection of very small polyps.

Computed tomography of cervical disk disease: technical considerations with representative case reports.

The authors describe their technique for computed tomography (CT) of cervical disk herniation and related disease. The importance of correct position and slice thickness is emphasized. Representative cases of cervical disk herniation are reported to illustrate these technical considerations and the capability of CT in this disease.

Contact enhancement by xenon gas in computed tomography of the spinal cord and brain: preliminary observations.

Xenon gas has the capability of providing contrast enhancement in computed tomography (CT) by direct contact with certain organs and tissue. Preliminary observations on the applications of this type of contrast enhancement in CT study of the central nervous system (spinal cord and brain) are reported.

The rate of oxygen uptake by human red blood cells.

Oxygen uptake into intact and reconstituted human red blood cells was measured using dual wavelength, stopped flow techniques. The rate of oxygen uptake by human erythrocytes is roughly 40 times slower (t 1/2 congruent to 80 ms at 0.125 mM O2, 25 degrees C) than the corresponding rate of oxygen combination with free hemoglobin.