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
[{'content': 'Severe hypovalemic shock occurs when blood volume less is - \nSelect and explain. \nA. > 10%, B. > 20 %, C. >30 %, D. > 40 deg,10', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., > 40% Hvpovolemic shock Hypovolemic shock is the most common form of shock. This is due to decrease in blood volume either by loss of blood or plasma. Grading of hypovolemic shock o Mild hypovolemia --> When volume loss is less than 20%. There is generally mild tachycardia but relatively few external signs. o Moderate hypovolemia --> When volume loss is between 20-40%. Normal blood pressure is maintained in supine position, but there is postural hypotension and tachycardia on erect posture. o Severe hypovolemia -> When volume loss is > 40%. The classical signs of shock appear i.e., marked tachycardia, hypotension, disorientation. o This is due to decrease in blood volume either by loss of blood or plasma. Grading of hypovolemic shock o Mild hypovolemia --> When volume loss is less than 20%. There is generally mild tachycardiabut relatively few external signs. o Moderate hypovolemia --> When volume loss is between 20-40%. Normal blood pressure is maintained in supine position, but there is postural hypotension and tachycardia on erect posture. o Severe hypovolemia -> When volume loss is > 40%. The classical signs of shock appear i.e.,marked tachycardia, hypotension, disorientation.", 'role': 'assistant'}]