Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0012833 (dizziness)
 9,689 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Acute presentations for dementia, particularly dementia with Lewy bodies (DLB), are rare and can pose diagnostic challenges.We present a case of a 75-year-old woman who was previously fit, well and independent in all activities of daily living. She had no history of psychiatric, cognitive or memory problems. She presented with 2 weeks of sudden onset confusion, paranoia, dizziness and reduced oral intake. Thorough investigations for causes of delirium including blood tests, cerebrospinal fluid analysis obtained via lumbar puncture, electroencephalography, computed tomography, and magnetic resonance imaging were within normal limits. Further neurological examination demonstrated she had subtle Parkinsonian signs (cogwheel rigidity, bradykinesia) and was hypersensitive to small doses of antipsychotic (haloperidol and risperidone). A positive dopamine transporter scan was done confirming a diagnosis of an acute presentation of DLB. She has been commenced on a cholinesterase inhibitor (rivastigmine) and is presently settled in care.
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PMID:Acute presentation of dementia with Lewy bodies. 3153 Jul 7

Rivastigmine is a non-competitive reversible inhibitor of acetylcholinesterase which is approved as one of the fi rst-line treatment options for Alzheimer's disease. We present the case of a 33-year-old woman with acute cholinergic syndrome secondary to deliberate rivastigmine poisoning. The patient presented at the emergency department (ED) with drowsy consciousness, dizziness, vomiting, diarrhea, sweating, and hypertension (171/103 mmHg). At the scene, an empty bottle of Rivast 120 mL/Bot, containing rivastigmine 2 mg/mL, was found beside the patient. Two hours later, we noted bronchorrhea and persistent salivation along with drowsiness, agitation, fatigue, incontinence, and limbs paralysis. A notably low serum cholinesterase level (651 U/l) was identified. Acute cholinergic syndrome secondary to rivastigmine intoxication was diagnosed. Endotracheal intubation with ventilator support was required due to respiratory failure. Atropine (0.5 mg intravenous injection) was administered. She was subsequently admitted to the intensive care unit for further care. Extubation was performed on the third day. The patient insisted on being discharged on the second day after extubation, and after administration of a total of 11 mg of atropine, no signs of either intermediate syndrome or delayed polyneuropathywere noted. rivastigmine, an acetylcholinesterase inhibitor, can precipitate an acute cholinergic crisis in cases of intoxication. Typical clinical features of cholinergic excess include increased secretions in the airway and oral cavity, miosis, diarrhea, anxiety, twitching, bronchoconstriction, convulsions, confusion, and gastrointestinal and muscular cramps. The treatment for acute cholinergic crisis is administration of atropine alone or in combination with an antidote to the cholinesterase inhibitor (such as pralidoxime). Patients often recover well with atropine supplements and optimal supportive care.
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PMID:Successful Resuscitation of a Young Girl Who Drank Rivastigmine With Respiratory Failure. 3299 49


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