PMID- 27810156 OWN - NLM STAT- MEDLINE DCOM- 20170615 LR - 20181013 IS - 1097-6833 (Electronic) IS - 0022-3476 (Linking) VI - 180 DP - 2017 Jan TI - Pulmonary Arterial Capacitance Index Is a Strong Predictor for Adverse Outcome in Children with Idiopathic and Heritable Pulmonary Arterial Hypertension. PG - 75-79.e2 LID - S0022-3476(16)31060-5 [pii] LID - 10.1016/j.jpeds.2016.10.003 [doi] AB - OBJECTIVES: To evaluate the clinical utility of pulmonary artery capacitance index (PACi) in the assessment of disease severity and prognostic value in children with idiopathic and heritable pulmonary arterial hypertension (PAH). STUDY DESIGN: PACi is defined as the ratio of stroke volume index over pulmonary pulse pressure. A retrospective study was performed to compare PACi, brain natriuretic peptide (BNP), 6-minute walk distance, New York Heart association (NYHA) functional class, and adverse outcomes (hospitalization due to heart failure, lung transplantation, and cardiac mortality) in 72 Japanese children (10 +/- 3.6 years) with idiopathic and heritable PAH. RESULTS: PACi had significant correlations with pulmonary vascular resistance index (r =-0.73, P < .0001), BNP levels (r = -0.40, P = .0008), and 6-minute walk distance (r = 0.57, P < .05). Statistically significant differences in PACi were observed between NYHA functional class II vs combined III and IV (median; 1.1 vs 0.6 mL/mm Hg/m(2), respectively, P < .05). There were 25 of 72 (35%) children who had an adverse event including initiation of hospitalization due to heart failure, lung transplantation, and death. Cumulative event-free survival rate was significantly lower when PACi was <0.85 mL/mm Hg/m(2) (log-rank test, P < .0001). CONCLUSIONS: PACi correlated with BNP and NYHA functional class and may serve as a strong prognostic marker in children with idiopathic and heritable PAH. CI - Copyright (c) 2016 Elsevier Inc. All rights reserved. FAU - Takatsuki, Shinichi AU - Takatsuki S AD - Department of Pediatrics, Toho University Omori Medical Center, Tokyo, Japan. FAU - Nakayama, Tomotaka AU - Nakayama T AD - Department of Pediatrics, Toho University Omori Medical Center, Tokyo, Japan. FAU - Ikehara, Satoshi AU - Ikehara S AD - Department of Pediatrics, Toho University Omori Medical Center, Tokyo, Japan. FAU - Matsuura, Hiroyuki AU - Matsuura H AD - Department of Pediatrics, Toho University Omori Medical Center, Tokyo, Japan. FAU - Ivy, David Dunbar AU - Ivy DD AD - Department of Pediatrics, Children's Hospital Colorado, University of Colorado School of Medicine, Aurora, CO. FAU - Saji, Tsutomu AU - Saji T AD - Department of Pediatrics, Toho University Omori Medical Center, Tokyo, Japan. LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20161031 PL - United States TA - J Pediatr JT - The Journal of pediatrics JID - 0375410 SB - IM CIN - J Pediatr. 2017 May;184:240. PMID: 28233545 CIN - J Pediatr. 2017 May;184:239-240. PMID: 28434572 MH - Child MH - Familial Primary Pulmonary Hypertension/*physiopathology MH - Female MH - Humans MH - Male MH - Predictive Value of Tests MH - Prognosis MH - Pulmonary Artery/*physiopathology MH - Retrospective Studies MH - Severity of Illness Index MH - *Vascular Capacitance OTO - NOTNLM OT - idiopathic pulmonary arterial hypertension OT - pulmonary arterial capacitance index OT - right ventricular failure OT - right ventricular-pulmonary arterial coupling EDAT- 2016/11/05 06:00 MHDA- 2017/06/16 06:00 CRDT- 2016/11/05 06:00 PHST- 2016/03/30 00:00 [received] PHST- 2016/08/03 00:00 [revised] PHST- 2016/10/03 00:00 [accepted] PHST- 2016/11/05 06:00 [pubmed] PHST- 2017/06/16 06:00 [medline] PHST- 2016/11/05 06:00 [entrez] AID - S0022-3476(16)31060-5 [pii] AID - 10.1016/j.jpeds.2016.10.003 [doi] PST - ppublish SO - J Pediatr. 2017 Jan;180:75-79.e2. doi: 10.1016/j.jpeds.2016.10.003. Epub 2016 Oct 31.