Apomorphine is a well established treatment for the management of sudden, unexpected and refractory levodopa-induced “off” states in fluctuating Parkinson’s disease either as bolus injections or as continuous infusions. Incidents of atrial fibrillation associated with the administration of the drug have been reported in the past but no incidents of ventricular arrhythmias. We report a case of ventricular bigeminy recorded in a female patient after the administration of apomorphine.
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Continuous infusion of levodopa or apomorphine provide constant dopaminergic stimulations are good alternatives to deep brain stimulation to control motor fluctuations in patients with advanced Parkinson’s disease (PD). Apomorphine provides motor benefit similar to dopamine, but its long-term use is limited by compliance, mostly injection site skin reactions. Administration of levodopa/carbidopa by continuous duodenal infusion allows replacement of all oral medications and permits achievement of a satisfactory therapeutic response paralleled by a reduction in motor complication severity. However, this procedure is more invasive than apomorphine as it requires a percutaneous endoscopic gastrostomy Clinical experience with infusions shows that continuous dopaminergic stimulation of dopaminergic medications reduces dyskinesia and widens the therapeutic window in advanced PD.
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