A 5-month-old with frequent regurgitation since birth now ha…

A 5-month-old with frequent regurgitation since birth now has 3 weeks of forceful vomiting, weight drop from 40th to 15th percentile, irritability with back arching during feeds, and one episode of blood-tinged spit-up. Born full-term, previously healthy. Which combination of findings is MOST concerning and warrants urgent investigation?

You are the NNP called to assess a cyanotic 3-day old in the…

You are the NNP called to assess a cyanotic 3-day old in the regular nursery who is tachypneic with no grunting, flaring, or retracting. She does not increase her SpO2 above 70% despite giving 100% blow-by oxygen for 5 minutes. Which medication would you order and why?