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': 'Anaphylactic shock is caused by which type of hypersensitivity reaction? \nSelect and explain. \nA. II, B. III, C. IV, D. I', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Anaphylactic\xa0shock is caused by type I Hypersensitivity\xa0reaction.\n\nShock\n\nShock is the clinical syndrome that results from poor tissue\xa0perfusion.\nIn this condition, tissues\xa0in the body do not receive enough oxygen and nutrients to allow the cells to\xa0function.\nThis ultimately\xa0leads to cellular death and may progress to organ failure and finally, to whole body failure\xa0and death.\n\nCommon types of shock:-\n\nHypovolemic shock\xa0→ Due to decreased blood volume from any cause.\xa0(most common type)\xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0\xa0\nCardiogenic shock → Due to the inadequate pumping action\xa0of the heart.\nSeptic\xa0shock → caused by infection\nAnaphylactic shock\xa0→ Caused by type I hypersensitivity\xa0reaction.\nNeurogenic shock → Caused by damage to the nervous system that leads\xa0to interruption\xa0of sympathetic\xa0vasomotor input.', 'role': 'assistant'}]