Mental stress-induced hemoconcentration and its recovery: A controlled study of time course and mechanisms

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Mental stress-induced hemoconcentration and its recovery: A controlled study of time course and mechanisms. / DeBoer, D; Ring, Christopher; Curlett, AC; Ridley, M; Carroll, Douglas.

In: Psychophysiology, Vol. 44, 01.01.2007, p. 161-169.

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@article{c604903221524aee9018c4100dd18230,
title = "Mental stress-induced hemoconcentration and its recovery: A controlled study of time course and mechanisms",
abstract = "Hemoconcentration to mental stress has been implicated in acute cardiovascular events. Participants were exposed to a 30-min baseline, a 4-min stress task, and a 40-min recovery; they also undertook a 74-min no-stress control session. Hemodynamic activity was recorded and blood sampled regularly and analyzed for hematocrit, colloid osmotic pressure, and coagulation time. Hematocrit increased with stress and fully recovered after 20 min. Colloid osmotic pressure showed a similar time course. No such changes occurred in the control session. Coagulation time was not perturbed by stress. The pattern of increase in hematocrit correlated with contemporary colloid osmotic pressure and blood pressure. In recovery, only colloid osmotic pressure was strongly associated with hematocrit. The mechanisms of stress-induced hemoconcentration may differ from those responsible for recovery, which may depend primarily on colloid osmotic pressure.",
keywords = "time course, mental stress, coagulation time, colloid osmotic pressure, hemodynamic activity, hemoconcentration",
author = "D DeBoer and Christopher Ring and AC Curlett and M Ridley and Douglas Carroll",
year = "2007",
month = jan,
day = "1",
doi = "10.1111/j.1469-8986.2006.00485.x",
language = "English",
volume = "44",
pages = "161--169",
journal = "Psychophysiology",
issn = "0048-5772",
publisher = "Wiley Online Library",

}

RIS

TY - JOUR

T1 - Mental stress-induced hemoconcentration and its recovery: A controlled study of time course and mechanisms

AU - DeBoer, D

AU - Ring, Christopher

AU - Curlett, AC

AU - Ridley, M

AU - Carroll, Douglas

PY - 2007/1/1

Y1 - 2007/1/1

N2 - Hemoconcentration to mental stress has been implicated in acute cardiovascular events. Participants were exposed to a 30-min baseline, a 4-min stress task, and a 40-min recovery; they also undertook a 74-min no-stress control session. Hemodynamic activity was recorded and blood sampled regularly and analyzed for hematocrit, colloid osmotic pressure, and coagulation time. Hematocrit increased with stress and fully recovered after 20 min. Colloid osmotic pressure showed a similar time course. No such changes occurred in the control session. Coagulation time was not perturbed by stress. The pattern of increase in hematocrit correlated with contemporary colloid osmotic pressure and blood pressure. In recovery, only colloid osmotic pressure was strongly associated with hematocrit. The mechanisms of stress-induced hemoconcentration may differ from those responsible for recovery, which may depend primarily on colloid osmotic pressure.

AB - Hemoconcentration to mental stress has been implicated in acute cardiovascular events. Participants were exposed to a 30-min baseline, a 4-min stress task, and a 40-min recovery; they also undertook a 74-min no-stress control session. Hemodynamic activity was recorded and blood sampled regularly and analyzed for hematocrit, colloid osmotic pressure, and coagulation time. Hematocrit increased with stress and fully recovered after 20 min. Colloid osmotic pressure showed a similar time course. No such changes occurred in the control session. Coagulation time was not perturbed by stress. The pattern of increase in hematocrit correlated with contemporary colloid osmotic pressure and blood pressure. In recovery, only colloid osmotic pressure was strongly associated with hematocrit. The mechanisms of stress-induced hemoconcentration may differ from those responsible for recovery, which may depend primarily on colloid osmotic pressure.

KW - time course

KW - mental stress

KW - coagulation time

KW - colloid osmotic pressure

KW - hemodynamic activity

KW - hemoconcentration

U2 - 10.1111/j.1469-8986.2006.00485.x

DO - 10.1111/j.1469-8986.2006.00485.x

M3 - Article

C2 - 17241152

VL - 44

SP - 161

EP - 169

JO - Psychophysiology

JF - Psychophysiology

SN - 0048-5772

ER -