Documentation of delirium in the VA electronic health record.
BACKGROUND
Delirium is a life-threatening, clinical syndrome common among the elderly and hospitalized patients. Delirium is under-recognized and misdiagnosed, complicating efforts to study the epidemiology and construct appropriate decision support to improve patient care. This study was primarily conducted to realize how providers documented confirmed cases of delirium in electronic health records as a preliminary step for using computerized methods to identify patients with delirium from electronic health records.


METHODS
The Mental Health Consult (MHC) team reported cases of delirium to the study team during a 6-month study period (December 1, 2009 - May 31, 2010). A chart extraction tool was developed to abstract documentation of diagnosis, signs and symptoms and known risk factors of delirium. A nurse practitioner, and a clinical pharmacist independently reviewed clinical notes during each patients hospital stay to determine if delirium and or sign and symptoms of delirium were documented.


RESULTS
The MHC team reported 25 cases of delirium. When excluding MHC team notes, delirium was documented for 5 of the 25 patients (one reported case in a physician's note, four in discharge summaries). Delirium was ICD-9 Coded for 7 of the 25 cases. Signs and symptoms associated with delirium were characterized in 8 physician notes, 11 discharge summaries, and 14 nursing notes, accounting for 16 of the 25 cases with identified delirium.


CONCLUSIONS
Documentation of delirium is highly inconsistent even with a confirmed diagnosis. Hence, efforts to use existing data to precisely estimate the prevalence of delirium or to conduct epidemiological studies based on medical records will be challenging.
Carol
C
Hope
Nicollete
N
Estrada
Charlene
C
Weir
Chia-Chen
CC
Teng
Kavitha
K
Damal
University of Utah and SLC Veterans Affairs Medical Center, VA Salt Lake City Health Care System, 500 Foothill Drive Bldg 182, Salt Lake City, UT 84148, USA. Brian.sauer@utah.edu.
Brian C
BC
Sauer
D000368:Aged; D059019:Clinical Coding / Q000592:standards; D003693:Delirium / Q000175:diagnosis*; D003951:Diagnostic Errors / Q000706:statistics & numerical data*; D004282:Documentation / Q000706:statistics & numerical data*; D057286:Electronic Health Records / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged