[Response of cerebral hemodynamics to combined stress impacts].
Changes in cerebral hemodynamics (CH) was assessed with transcranial color duplex scanning in the middle cerebral artery (MSA) of 15 healthy male volunteers aged 20-23 years in response to psychoemotional stress (PES). The latter was induced by calculations, mild exercise (Martine's test), hypercapnia in inspiration of 6% CO2 and their various combinations. The results showed that a combined action of the stressors differs quantitatively and qualitatively from their isolated action. As a rule, in combination the stressors potentiated each other. The response of CH to a combined action of the stressors, PES and hypercapnia, in particular, may be also characterized by a prevalent effect of one of the stressors, in this case by a stronger action of hypercapnia.
Kulikov
V P
VP
Grechishnikov
V N
VN
Sidor
M V
MV
D000328:Adult; D002560:Cerebrovascular Circulation / Q000502:physiology*; D006801:Humans; D008297:Male; D020768:Middle Cerebral Artery / Q000000981:diagnostic imaging / Q000502:physiology; D013312:Stress, Physiological / Q000000981:diagnostic imaging / Q000209:etiology / Q000503:physiopathology*; D013315:Stress, Psychological / Q000000981:diagnostic imaging / Q000209:etiology / Q000503:physiopathology*; D017585:Ultrasonography, Doppler, Transcranial