Breath Analysis in Pulmonary Arterial Hypertension

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Breath Analysis in Pulmonary Arterial Hypertension Cikach Frank S. , BS, Adriano R. Tonelli, MD, Jarrod Barnes, PhD, Kelly Paschke, BA, Jennie Newman, LPN, David Grove, PhD, Luma Dababneh, MD, Sihe Wang, MD, Raed A. Dweik, MD, FCCP  CHEST  Volume 145, Issue 3, Pages 551-558 (March 2014) DOI: 10.1378/chest.13-1363 Copyright © 2014 The American College of Chest Physicians Terms and Conditions

Figure 1 Canonical discriminant analysis was performed in a training cohort of 17 patients with PAH (purple △) and in 19 control subjects (green ○). This PAH “breathprint” was then used to classify an independent validation cohort of 14 patients with PAH (blue △) and 15 control subjects (red ○). *Misclassified individuals. PAH = pulmonary arterial hypertension. CHEST 2014 145, 551-558DOI: (10.1378/chest.13-1363) Copyright © 2014 The American College of Chest Physicians Terms and Conditions

Figure 2 Representative areas of the average selected ion flow tube-mass spectrometry for the PAH and control groups. Labeled peaks correspond to selected compounds listed in Table 3. A, Ammonia peak comes from the O2+ precursor ion spectrum. B, Other molecules peaks from the H3O+ precursor ion spectrum. The concentrations of a specific compound are calculated based on its counts relative to the precursor counts. *Precursor ion peak. PH = pulmonary hypertension. See Figure 1 legend for expansion of other abbreviation. CHEST 2014 145, 551-558DOI: (10.1378/chest.13-1363) Copyright © 2014 The American College of Chest Physicians Terms and Conditions