<prompt> In which of the following condition gastric wash is contraindicated?Oxalic acidSulphuric acidOpiateDhatura  <response>: The only absolute contraindication is corrosive poisoning except carbolic acid, owing to the danger of perforation. In the following conditions stomach wash can be done by taking proper precautions: Convulsant poisons Comatose patients Volatile poisons Upper alimentary disease e.g., esophageal varices Marked hypothermia and hemorrhagic diathesis Ref: The Essentials of Forensic Medicine and Toxicology by KS Narayan Reddy, 27th edition, Page 453. 