A 6 year old patient in PICU is intubated secondary to hypox…

A 6 year old patient in PICU is intubated secondary to hypoxemic respiratory failure and currently on PC-CMV-CT.  Vt is 7mL/kg, PEEP is 15 cmH20, IT is 0.8 seconds, FiO2 is 100%.  The SpO2 remains 85% despite these settings.  CXR reveals acute bilateral fluffy infiltrates.  The resident turns to the RCP and says, what can we try next?  

A sociologist wants to study racial discrimination in hiring…

A sociologist wants to study racial discrimination in hiring. They debate whether to distribute a survey asking employers about their hiring methods or to conduct an experiment that involves sending fake resumes to employers to see who gets an interview. Which method would best examine racial discrimination in hiring and why?