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 Tracheostomy opening is put on.....tracheal rings: and explain in detail?
Ans: b (2 - 3 rings) Ref:Dhingra, 3rd ed, p. 382 & 4"'ed, p. 292Tracheostomy: Making an opening in the anterior wall of trachea & converting it into a stoma on the skin surfaceTracheotomy: Means opening the trachea, a step in tracheostomy operationTracheostomy can be divided into 3 types:HighMidLowHigh tracheostomy:Above the level of thyroid isthmus(Isthmus lies against II. III. IV tracheal rings)It disrupts Is' ring of trachea- almost always avoided.Disadvantage: Perichondritis of cricoid cartilage, subglottic stenosisOnly indication: Carcinoma larynxMid tracheostomy:Done through 2nd or 3rd tracheal ringsPreferred approachLow tracheostomy:Below the level of isthmusDisadvantage: Trachea is close to major vessels at this level & may get injuredTracheostomy tube may impinge on suprasternal notch