First response to decreased blood volume
Baroreceptor reflex is an immediate compensatory mechanism in shock. There is stimulation of aerial baroreceptors and so sympathetic output is increased leading to vasoconstriction and reflex tachycardia. Ref: Textbook of medical physiology by N Geetha, 2nd edition, page no. 184
Increased hea rate
Tachypnea
Hypotension
Disorientation
Cardiovascular system