This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pathology
Obstructive shock is due to - 
Select and explain. 
A. Mechanical impediment to blood flow, B. Cardiac pump failure, C. Peripheral pooling of blood, D. Hypovolemia
A: Mechanical impediment to blood flow
Answer: A: Mechanical impediment to blood flow 
Explanation: Obstructive shock is a form of shock associated with physical obstruction of the great vessels or the hea itself.Pulmonary embolism and cardiac tamponade are considered forms of obstructive shock. Obstructive shock come under cardiogenic shock Robbins 9 th edition page no. 94