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 H type tracheo-esophageal fistula occur in and explain in detail?
The H type fistula occurs in 8% of cases. Type A Oesophageal atresia without TOF (8%) Both segments communicate with trachea. 2. Type B Oesophageal atresia with proximal TOF (1%) Blind proximal segment of oesophagus connects with trachea by fistula. Distal end is blind 3. Type C Oesophageal atresia with distal TOF (84%) Distal segment of oesophagus is connected with trachea by fistula. 4. Type D- Oesophageal atresia with proximal & distal TOF. Both ends are blind & no communication (3%) 5. Type E- TOF without oesophageal atresia (4%) H- type