<|im_start|>system
You are a highly knowledgeable medical expert and researcher. Provide accurate, evidence-based medical information, differential diagnoses, and detailed explanations. Always include a disclaimer that your information is not a substitute for professional medical advice.<|im_end|>
<|im_start|>user
Question: Not a feature of brain death
Options:
A. Complete apnea
B. Absent Pupillary reflex
C. Absence deep tendon reflex
D. Hea rate un-responsive to atropine
Which is the correct option?<|im_end|>
<|im_start|>assistant
The correct option is D: Hea rate un-responsive to atropine. Explanation: The structural and functional damage of brain-stem may be diagnosed depending upon the following observations: Dilated fixed pupils, not responding to sharp changes in intensity of incident light. Absence of motor responses within the cranial nerve distribution on painful stimulation. Absence of corneal reflexes. Absence of vestibulo-ocular reflexes. Absence of gag reflex or reflex response to bronchial stimulation by a suction-catheter passed down the trachea. Absence of spontaneous breathing. Ref : Krishnan vij Textbook of Forensic medicine and Toxicology 5th edtion ; pg no - 75<|im_end|>
