Which stage of shock is characterized by maintaining blood pressure through compensatory mechanisms?

• A. Decompensated Shock
• B. Shock
• C. Compensated Shock
• D. Cellular Hypoxia

Answer: (C)

Compensated shock is the stage where blood pressure is still maintained despite reduced perfusion because the body activates corrective mechanisms. Baroreceptors trigger sympathetic outflow, which increases heart rate and contractility and causes vasoconstriction to raise systemic vascular resistance. Hormonal responses, including catecholamines and antidiuretic hormone, help preserve intravascular volume and maintain perfusion to essential organs like the brain and heart. Clinically this appears as tachycardia with cool, clammy skin and a normal or near-normal blood pressure, though the pulse pressure may be narrow. If these compensatory mechanisms fail, blood pressure drops and perfusion worsens, leading to decompensated shock. Cellular hypoxia describes the outcome at the tissue level, not a separate stage.