Exhaled Nitric Oxide and Exhaled Breath Temperature as Potential Biomarkers in Patients with Pulmonary Hypertension

Figure 1

Boxplot showing FENO₅₀ (fractional exhaled nitric oxide at 50 ml/sec flow) values in the studied groups. Thick line showing median, box showing 25% and 75% interquartile ranges, and error bars showing minimum and maximum values. Small circles indicate outlier values. Groups were compared by ANOVA (PAH, pulmonary artery hypertension; COPD, chronic obstructive pulmonary disease; and HF, heart failure).