Fig. 1
From: Vitamin C deficiency can lead to pulmonary hypertension: a systematic review of case reports
Mean pulmonary artery pressure (mPAP) during scurvy and after vitamin C administration. mPAP was available at baseline for 28 patients, but 1 patient died before vitamin C was given [78]. The median mPAP level was 47 mmHg during scurvy. mPAP level after vitamin C administration was available for 18 cases, with the median mPAP 20 mmHg. The lines indicate the patients with both values. The mPAP level during scurvy was 2.4 fold (median; range 1.2–4.1) higher than the level during vitamin C administration. The red dash line indicates 20 mmHg, which is the limit for concluding PH [33]