Which of the following best describes postdural puncture headache?

Which opioid is short acting and metabolized by nonspecific plasma esterases?

A 32-week primipara presents to the labor floor with vaginal bleeding. Her vital signs are: BP 139/88, HR 82, RR 18, SaO2 96%. She denies pain. What is the most likely diagnosis?

Which of the following best describes the pathophysiology of preeclampsia?

Which of the following accurately describes the fetal hemoglobin?

Determine the average rate of change of the function on the given interval. f (x) =  on [4, 7]

Which of the following spinal needles is a cutting needle and most likely to cause a PDPH?

Which of the following cardiovascular changes occur in pregnancy?

EXTRA CREDIT (up to 2 pts, 1 point for yes/no and 1 point for explanation) Do researchers conduct correlation studies to establish a cause-and-effect relationship between two variables? Explain your answer. 

What are the three basic principles of protection of human research participants as identified in the Belmont report?  1 pt for each principle.