This Mentored Patient-Oriented Research Career Development Award (K23) will provide Dr. Timothy D. Girard the opportunity to develop his career as a clinical investigator in the field of geriatric critical care and to establish an independent program of aging research focused on the clinical and molecular epidemiology of critical-illness associated cognitive impairment. Through an integrated program of didactic activities and course work in geriatrics, clinical and molecular epidemiology, and neuropsychology;intensive mentorship by local experts;and hands-on experience in the design, implementation, and analysis of a prospective clinical investigation, Dr. Girard will use this award to become a highly trained investigator in aging research. The primary scientific goal of this proposal is to identify and study the clinical and molecular predictors of long-term cognitive impairment (LTCI) after critical illness. Older patients account for the majority of ICU admissions, and cognitive impairment is a major impediment to meaningful recovery in this vulnerable population;survivors of critical illness have a 25%-75% risk of developing LTCI, a manifestation of persistent brain dysfunction associated with reduced quality of life and significant societal costs. Utilizing a prospective cohort investigation, Dr. Girard will identify those ICU patients at highest risk for LTCI and quantify the contribution of important risk factors to LTCI after critical illness. Specifically, the candidate will identify clinical risk factors for an increased incidence and severity of long-term cognitive impairment after critical illness (Aim 1). Furthermore, he will determine whether inflammation and coagulopathy are risk factors for an increased incidence and severity of LTCI after critical illness (Aim 2). Finally, Dr. Girard will determine which categories of delirium defined by clinical risk factors in critically ill patients are associated with an increased incidence and severity of LTCI after critical illness (Aim 3). This work will pave the way for the study of preventive and therapeutic interventions by ensuring that such efforts will be focused on patients at highest risk. Dr. Girard's long-term research goal is to improve the outcomes of older critically ill patients through the prevention and treatment of critical illness-associated cognitive impairment.

Public Health Relevance

Advances in intensive care medicine have improved the likelihood of survival for patients with critical illness, but studies have shown that many survivors develop persistent cognitive impairment, which reduces quality of life. This study seeks to identify risk factors for cognitive impairment after critical illness in order to guide the development of strategies to prevent and treat this potentially devastating complication of critical illness.

Agency
National Institute of Health (NIH)
Institute
National Institute on Aging (NIA)
Type
Mentored Patient-Oriented Research Career Development Award (K23)
Project #
5K23AG034257-05
Application #
8523720
Study Section
National Institute on Aging Initial Review Group (NIA)
Program Officer
Wagster, Molly V
Project Start
2009-09-01
Project End
2014-08-31
Budget Start
2013-09-01
Budget End
2014-08-31
Support Year
5
Fiscal Year
2013
Total Cost
$131,736
Indirect Cost
$9,758
Name
Vanderbilt University Medical Center
Department
Internal Medicine/Medicine
Type
Schools of Medicine
DUNS #
004413456
City
Nashville
State
TN
Country
United States
Zip Code
37212
Morandi, Alessandro; Hughes, Christopher G; Thompson, Jennifer L et al. (2014) Statins and delirium during critical illness: a multicenter, prospective cohort study. Crit Care Med 42:1899-909
Andresen, Jennifer M; Girard, Timothy D; Pandharipande, Pratik P et al. (2014) Burst suppression on processed electroencephalography as a predictor of postcoma delirium in mechanically ventilated ICU patients. Crit Care Med 42:2244-51
Brummel, Nathan E; Jackson, James C; Pandharipande, Pratik P et al. (2014) Delirium in the ICU and subsequent long-term disability among survivors of mechanical ventilation. Crit Care Med 42:369-77
Jackson, James C; Pandharipande, Pratik P; Girard, Timothy D et al. (2014) Depression, post-traumatic stress disorder, and functional disability in survivors of critical illness in the BRAIN-ICU study: a longitudinal cohort study. Lancet Respir Med 2:369-79
Brummel, N E; Girard, T D; Ely, E W et al. (2014) Feasibility and safety of early combined cognitive and physical therapy for critically ill medical and surgical patients: the Activity and Cognitive Therapy in ICU (ACT-ICU) trial. Intensive Care Med 40:370-9
Hughes, Christopher G; Girard, Timothy D; Pandharipande, Pratik P (2013) Daily sedation interruption versus targeted light sedation strategies in ICU patients. Crit Care Med 41:S39-45
Hughes, Christopher G; Morandi, Alessandro; Girard, Timothy D et al. (2013) Association between endothelial dysfunction and acute brain dysfunction during critical illness. Anesthesiology 118:631-9
Brummel, Nathan E; Girard, Timothy D (2013) Preventing delirium in the intensive care unit. Crit Care Clin 29:51-65
Pandharipande, P P; Girard, T D; Jackson, J C et al. (2013) Long-term cognitive impairment after critical illness. N Engl J Med 369:1306-16
Morandi, Alessandro; Barnett, Nicolas; Miller 3rd, Russel R et al. (2013) Vitamin D and delirium in critically ill patients: a preliminary investigation. J Crit Care 28:230-5

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