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Abstract Details

Characterizing Delirium in a Parkinson’s Disease Population: Demographics, Common Etiologies and Co-Morbidities at a Single Institution
Movement Disorders
P6 - Poster Session 6 (5:30 PM-6:30 PM)
5-012
This study aims to evaluate factors associated with episodes of delirium in a large single-institution cohort of patients with Parkinson's Disease (PD). 

Literature suggests patients with Parkinson’s Disease (PD) are at increased risk of delirium. Despite being at an apparent increased risk and worse health outcomes, there is a paucity of information on predictive factors for delirium in patients with PD.
This was a single-center, IRB-approved retrospective cohort study. Patients with ICD-10 diagnoses of Parkinson’s Disease in the University of Louisville Hospital system were identified via billing tracing. Patient records were reviewed for diagnoses of delirium/encephalopathy, or for neuropsychiatric episodes meeting the DSM-V criteria for delirium. Data at time of episode(s) was collected, including demographics, ICD-10 coding, medications, and neuropsychiatric co-morbidities at time of episode, and date of PD diagnosis.
40/625 (6.5%) pts with PD diagnosis met inclusion criteria for an episode of delirium, of which 18/40 (45%) carried an ICD-10 code of delirium or encephalopathy at time of episode. Average age of first episode was 70.72, mean 3.67 years following PD diagnosis. Average number of medications was 8.2, and average dose of PD medication in levodopa equivalents at first episode was 656.3 mg. Most common presenting symptoms of first episode were altered mental status (18%) and hallucinations (18%). Most common identifiable etiologies were medication changes (25%) and UTI/urosepsis (20%). 14/40 (35%) patients had pre-existing mood disorder and 9/40 (23%) had PD dementia. Zero patients had neurostimulators.
In this retrospective study of a PD population, factors more associated with episodes of delirium include pre-existing mood disorder, PD dementia, UTI and medication changes. Many episodes did not include an ICD-10 code of delirium/encephalopathy in their diagnosis, reinforcing that delirium is under-diagnosed in patients with PD.  
Authors/Disclosures
Phil Schmitt, MD
PRESENTER 		Dr. Schmitt has nothing to disclose.
Megan Coghlan (Dartmouth Hitchcock Medical Center) Ms. Coghlan has nothing to disclose.
James R. Johnson, MD (Neurology 好色先生 Office) Dr. Johnson has nothing to disclose.
Jessica M. Fulkerson (ULSOM) Ms. Fulkerson has nothing to disclose.
No disclosure on file
Victoria N. Holiday, MD (University of Louisville College of Medicine) Dr. Holiday has nothing to disclose.
Peter Hedera, MD (Vanderbilt University) Dr. Hedera has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Alexion. Dr. Hedera has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Abbvie. Dr. Hedera has received personal compensation in the range of $5,000-$9,999 for serving as an Editor, Associate Editor, or Editorial Advisory Board Member for University of Louisville.