Management of African trypanosomiasis of the CNS: polysomnography as a noninvasive staging tool
2012
Human African trypanosomiasis staging follows human African trypanosomiasis diagnosis (trypanosomes in blood and/or lymph glands, trypanosome-positive). Staging determines treatment, as stage 2 medications are toxic and/or difficult to administer. It relies on cerebrospinal fluid examination: stage 1 (no cerebrospinal fluid trypanosome, trypanosome-negative; white blood cell count ≤5/µl); stage 2 (trypanosome-positive and/or white blood cell count ≥20/µl); intermediate stage (6–19 white blood cell/µl; trypanosome-negative). Lumbar puncture is repeated biannually during the 24-month post-treatment follow-up to confirm cure or detect relapse. Sleep disorders are major at stage 2, with a two-symptom polysomnographic syndrome: sleep–wake circadian disruptions; and sleep-onset rapid eye movement sleep periods. Polysomnography (PSG) was proposed as a noninvasive diagnostic tool, and 24-h PSG recordings were performed throughout a 5-year survey in Congo. Before treatment, 76 patients were included and recorded. ...
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