Blood pressure and cerebrospinal fluid norepinephrine in combat-related posttraumatic stress disorder.
OBJECTIVE
Central nervous system norepinephrine (NE) is normally involved in blood pressure regulation, but it is pathophysiologically elevated in posttraumatic stress disorder (PTSD).


METHODS
We monitored blood pressure while performing serial cerebrospinal fluid (CSF) sampling for 6 hours to determine CSF NE concentrations in men with combat-related PTSD (n = 11) and in healthy men (n = 8).


RESULTS
CSF NE concentrations strongly and positively correlated with mean diastolic blood pressure in the healthy men (R = 0.93, p <.002) but not in the patients (R = 0.10, p =.77). Within individuals, mean arterial pressure, systolic blood pressure, diastolic blood pressure and pulse pressure were poorly correlated over time in patients with PTSD but highly correlated over time in the healthy men, indicating that measurement of these hemodynamic parameters are poorly prognostic of subsequent measurements of the same parameter in patients with PTSD.


CONCLUSIONS
These data demonstrate the loss of the normal direct relationship between CSF NE and blood pressure in combat veterans with PTSD. Whether this dysynchrony mechanistically relates to the hemodynamic abnormalities in PTSD or, like some of the psychobehavioral symptoms, can be corrected with anti-noradrenergic pharmacotherapy remains to be determined.
Strawn
Jeffrey R
JR
Department of Psychiatry, College of Medicine, University of Cincinnati, Cincinnati, Ohio, USA. strawnjr@uc.edu
Ekhator
Nosakhare N
NN
Horn
Paul S
PS
Baker
Dewleen G
DG
Geracioti
Thomas D
TD
D000328:Adult; D001794:Blood Pressure / Q000502:physiology*; D001795:Blood Pressure Determination; D015992:Body Mass Index; D003130:Combat Disorders / Q000134:cerebrospinal fluid* / Q000175:diagnosis* / Q000503:physiopathology; D003971:Diastole / Q000502:physiology; D047830:Gulf War; D006801:Humans; D008297:Male; D009638:Norepinephrine / Q000134:cerebrospinal fluid* / Q000502:physiology; D011569:Psychiatric Status Rating Scales; D013313:Stress Disorders, Post-Traumatic / Q000134:cerebrospinal fluid* / Q000175:diagnosis* / Q000503:physiopathology; D013599:Systole / Q000502:physiology; D047829:Vietnam Conflict
D009638:Norepinephrine