Nō to shinkei = Brain and nerve
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Comparative Study
[Comparison between Dyck's criteria and the polyneuropathy index-revised (PNI-R) in the electrophysiologic evaluation of diabetic neuropathy].
In Rochester diabetic neuropathy research by Dyck et al., abnormal value in two or more nerves was introduced into the nerve conduction criteria of diabetic neuropathy. Polyneuropathy index-revised(PNI-R) is calculated as the mean percentage of the normal of 8 parameters on the motor nerve conduction studies. They were motor nerve conduction velocities in the forearm or leg segment and F-wave latencies after wrist or ankle stimulation concerning to the median, ulnar, peroneal and posterior tibial nerves. ⋯ In conclusion, abnormal PNI-R and abnormal value in two or more nerves are both useful and coincide with each other in the detection of diabetic neuropathy. The PNI-R is an excellent quantitative index, and the PNI-R corresponds well with the number of abnormal nerves. These observations indicate that the number of nerves with abnormal value is also available as a simple and semi-quantitative index of diabetic neuropathy.
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Case Reports
[A case with diffuse vasospasm after perimesencephalic nonaneurysmal subarachnoid hemorrhage].
Perimesencephalic nonaneurysmal subarachnoid hemorrhage(PNSH), defined as bleeding in the cisterns around the midbrain with a negative four-vessel angiographic study, is uniformly associated with an excellent outcome without associated rebleeding or symptomatic vasospasm. Angiographic vasospasm is uncommon in patients with this disease, and if vasospasm is present, severe and diffuse angiographical vasospasm is rare. We report a case with PNSH who developed severe and diffuse angiographic vasospasm. ⋯ She was treated with normovolemia, and remained no neurological symptom. Follow-up MR angiography showed improvement of the angiographic vasospasm. When the presence of diffuse and severe vasospasm is detected, a diagnosis of PNSH should not be excluded.