This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
In shock, characteristic feature is - 
Select and explain. 
A. Cardiac failure, B. Poor perfusion of tissues, C. Cyanosis, D. Oedema
B: Poor perfusion of tissues
Answer: B: Poor perfusion of tissues 
Explanation: Ans. is 'b' i.e., Poor perfusion of tissues SHOCK Shock is the clinical syndrome that results from poor tissue perfusion. In this condition tissues in the body do not receive enough oxygen and nutrients to allow the cells to function. o This ultimately leads to cellular death and may progress to organ failure and finally, to whole body failure and death. Common types of shock o Hypovalemic shock --> Due to decreased blood volume from any cause. (most common type) o Cardiogenic shock Due to inadequate pumping action of the hea. o Septic shock Caused by infection o Anaphylactic shock --> Caused by type I hypersensitivity reaction. o Neurogenic shock Caused by damage to nervous system that leads to interruption of sympathetic vasomotor input.