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 the single most effective step in resuscitation of babies who fail to breathe at bih? and explain in detail?
Positive pressure ventilation is the single most effective step in the resuscitation of neonates who fail to breathe at bih. Device used for PPV- 'Ambu bag'