Abstract Details

Title Heart Rate Variability during Face Cooling in Concussed Adolescents

Topic Neuro Trauma and Sports Neurology

Presentation(s) P1 - Poster Session 1 (5:30 PM-7:00 PM)

Poster/Presentation
Number 023

Objective

We measured heart rate variability (HRV) during physiological stimuli in acutely concussed adolescents (CX) and after clinical recovery, and compared with healthy controls (HC).

Background

Concussion is associated with autonomic dysfunction. Face Cooling (FC) triggers the trigeminal nerve to evoke transient increases in cardiac parasympathetic (PNS) activity.

Design/Methods

11 CX (14.8±0.9 years, 6 male, 7 days since injury) and 11 HC (16.1±1.1 years, 9 male) participated. We calculated mean heart rate (HR), standard deviation of root mean square (RMSSD, measure of PNS tone) and low-frequency to high-frequency power ratio (LF/HF ratio, measure of sympathetic [SNS] tone) at rest and 3-minute FC test.

Results

CX at Visit 1 and 2 had significantly lesser increase in HR (p=0.02) and RMSSD (p=0.038) than HC on FC.

Conclusions

These data show that acutely concussed participants have an attenuated PNS response to physiological stimuli which continues after clinical recovery.

Authors/Disclosures
Mohammad N. Haider (University At Buffalo, SUNY) PRESENTER	Mr. Haider has received personal compensation in the range of $50,000-$99,999 for serving as a Consultant for Blink TBI. Mr. Haider has received personal compensation in the range of $100,000-$499,999 for serving as a Consultant for Blink CNS. Mr. Haider has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Oculogica Inc. Mr. Haider has stock in Headquarters Health. The institution of Mr. Haider has received research support from NIH. Mr. Haider has received research support from Headquarters Health. The institution of Mr. Haider has received research support from CDMRP/PRMRP.
	No disclosure on file
	No disclosure on file
	No disclosure on file
John J. Leddy, MD, FACSM, FACP (UBMD Orthopaedics & Sports Medicine)	Dr. Leddy has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Zeiss. Dr. Leddy has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for NeckCare. Dr. Leddy has stock in 360 Concussion Care. The institution of Dr. Leddy has received research support from DoD.

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