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: Anaesthesia
Which of the following is NOT an indication for blind nasal intubation? 
Select and explain. 
A. TM joint ankylosis, B. Impossible laryngoscopy, C. CSF otorrhea, D. Base of skull fracture
D: Base of skull fracture
Answer: D: Base of skull fracture 
Explanation: Blind intubation techniques are those methods of airway management that are done without visualization of the larynx or glottis. Blind nasal intubation is contra-indicated in the presence of a base-of-skull fracture, e.g., with 'raccoon eyes' or with CSF dripping from the nose, as the endotracheal tube can enter the brain. Indications for blind nasal intubation include impossible laryngoscopy, TM joint problems or trismus due to any cause.