3/25/2010

Post Polio Booklet

POST-POLIO BOOKLET 12/10  PDF

Daria A. TrojanMDMSc, McGill University, .... post-polio centers—to concentrate clinicalexpertise and .... conduction block, multiple sclerosis, myasthenia gravis, ... physiatrist, neurologist, and physical and occupational therapists. ... overuse (exertion to the point of muscle pain and fatigue




Title: Anticholinesterase-responsive neuromuscular junction transmission defects in post-poliomyelitis fatigue

[ Full Text Here ] Author(s): Daria A. Trojan, Daniel Gendron and Neil R. Cashman
Original Publication: Journal of the Neurological Sciences, 114 (1993) 170-177
Abstract/Extract: Disabling generalized fatigue and muscle fatiguability are common features of post-poliomyelitis syndrome (PPS). In 17 fatigued PPS patients, we measured jitter on stimulation single-fiber electromyography (S-SFEMG) for at least 3.5 min before and after i.v. injection of 10 mg edrophonium. We observed reduction in jitter (defined as a significant difference in jitter means before and after edrophonium, unpaired t-test P < 0.05) in 7 patients, no change in 8, and a significant increase in 2 patients. Blinded to their edrophonium results, the 17 patients were treated with pyridostigmine 180 mg/day for 1 month, with a subjective improvement of fatigue in 9 patients, and with a significant reduction in Daria A. Trojan, Daniel Gendron and Neil R. Cashman Hare fatigue scores in the entire group of 17 patients (pre = 2.71, and post = 1.71; Wilcoxan signed rank sum test, P < 0.05). Edrophonium-induced reduction of jitter on S-SFEMG was significantly associated with pyridostigmine-induced subjective improvement of fatigue (Fisher's exact test, P < 0.04). A significant reduction in fatigue with pyridostigmine was observed only in the 7 patients who experienced a significant reduction in jitter with edrophonium (Wilcoxan signed rank sum test,P = 0.03). In addition, the 9 pyridostigmine responders experienced a significant reduction in jitter means pre- and post-edrophonium (100% vs. 88%, Bonferroni corrected, P < 0.01). We conclude that neuromuscular transmission as measured by jitter on S-SFEMG can improve with edrophonium in a proportion of PPS patients, and that generalized fatigue and muscle fatiguability in some patients with PPS may be due to anticholinesterase-responsive NMJ transmission defects.
http://www.ott.zynet.co.uk/polio/lincolnshire/library/cs_t.html

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