A study was done to compare Inhaled Nitric Oxide versus Inhaled Epoprostenol for Acute Pulmonic Hypertension following Surgery.

Method: Single-center retrospective, observational cohort study comparing the two inhaled agents. The primary outcome was reduction of mean pulmonary artery pressure (mPAP) to < 30 mm Hg. 6 hours after ICU admission from the operating room. Secondary outcomes, included ICU and and hospital length of stay, duration of mechanical ventilation, bleeding complications, hypotension, in-hospital mortality, and cost.

McGinn, K., & Reichert, M. (2016). A comparison of Inhaled Epoprostenol for Acute Pulmonary Hypertension following cardiac surgery. Annals of Pharmocology, (50)1, 22-36. DOI: 10.1177/1060028015608865.

Question 1: Identify the specific variables being investigated. If applicable, identify the independent and dependent variable.

Question 2: Identify and critique the method used to measure each of the outcome variables. (They used comparisons between groups and analyzed using the X² or Fischer's exact tests for categorical data. Continuous data were reported as means and medians and compared using the Student t test or Mann-Whitney U test. P value<0.05.

I guess I'm not sure what the problem isjQuery22405794773781248371_1631206006378