You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is What is Mendelson syndrome due to: and explain in detail?
Ref: Miller text book of Anaesthesia. 6th editionExplanation:Mendelson"s sy ndrome is chemical pneumonitis caused by aspiration during anaesthesia, especially during pregnancy.Pneumonia develops rapidly, and within hours the patient may become tachypnoeic, hypoxic and febrile. There is minimal sputum.Patients are at high risk ifResidual gastric volume of greater than 25ml. withpH of less than 2.5Patients with a high risk should have a rapid sequence induction.High risk is defined as these factorsNon-elective surgical procedureLight anaesthesia/unexpected response to stimulationAcute or chronic, upper or lower GI pathologyObesityOpioid medicationNeurological disease, impaired conscious level, or sedationLi thotomy pos i t ionDifficult intubation/airwayGastrointestinal refluxHiatal hernia