{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,21]],"date-time":"2026-03-21T06:18:18Z","timestamp":1774073898413,"version":"3.50.1"},"reference-count":32,"publisher":"Georg Thieme Verlag KG","issue":"06","license":[{"start":{"date-parts":[[2024,10,8]],"date-time":"2024-10-08T00:00:00Z","timestamp":1728345600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"name":"Project of Clinical Key Specialty of Fujian Province"},{"name":"Xiamen Key Laboratory of Perinatal-Neonatal Infection"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Am J Perinatol"],"published-print":{"date-parts":[[2025,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>This study aimed to investigate clinical features of inhaled nitric oxide (iNO) in preterm infants with a gestational age (GA)\u2009&lt;\u200934 weeks in China.<\/jats:p><jats:p>The clinical data of 434 preterm infants with GA\u2009&lt;\u200934 weeks, treated with iNO in the neonatology departments of eight Class A tertiary hospitals in China over a 10-year period from January 2013 to December 2022, were included in this retrospective multicenter investigation. The infants were divided into three groups based on GA: 24 to 27 weeks (extremely preterm infants), 28 to 31 weeks (very preterm infants), and 32 to 33 weeks (moderate preterm infants). The use of iNO, perinatal data, incidence and mortality of indication for iNO treatment, therapeutic effects of iNO, incidence of short-term complications for iNO treatment, and mortality were compared among these three groups.<\/jats:p><jats:p>Over the past 10 years, the proportion of iNO use was highest in extremely preterm infants each year. The lower the GA, the higher the iNO use rate: 4.20% for GA 24 to 27 weeks, 1.54% for GA 28 to 31 weeks, and 0.85% for GA 32 to 33 weeks. There was no significant difference in the therapeutic effect of iNO among the three groups. The incidence of neonatal pulmonary hemorrhage, neonatal shock, late-onset diseases, retinopathy of prematurity requiring intervention, intracranial hemorrhage (grade 3 or 4), periventricular leukomalacia, neonatal necrotizing enterocolitis (\u2265stage II), and moderate to severe bronchopulmonary dysplasia was highest in extremely preterm infants and increased with decreasing GA. Mortality was negatively correlated with GA and birth weight. The highest rate of iNO treatment in 24 to 27 weeks' preterm infants was due to hypoxic respiratory failure (HRF), whereas the highest rate of iNO treatment in 32 to 33 weeks' preterm infants was due to documented persistent pulmonary hypertension of the newborn (PPHN). The rates of iNO treatment due to HRF and documented PPHN were 54.3 and 60.6%, respectively, in extremely preterm infants, significantly higher than in very preterm and moderate preterm infants (all p\u2009&lt;\u20090.05). Within the same GA group, the proportion of preterm infants treated with iNO for HRF was lower than that for documented PPHN (all p\u2009&lt;\u20090.05), but there was no statistically significant difference in mortality between HRF and documented PPHN treated with iNO (all p\u2009&gt;\u20090.05).<\/jats:p><jats:p>Among preterm infants with GA\u2009&lt;\u200934 weeks, the rate of iNO usage was highest in extremely preterm infants. However, iNO failed to improve the clinical outcome of extremely preterm infants with refractory hypoxemia, and there was no significant difference in the therapeutic effect of iNO among preterm infants with different GAs.<\/jats:p>","DOI":"10.1055\/a-2419-0021","type":"journal-article","created":{"date-parts":[[2024,10,8]],"date-time":"2024-10-08T23:38:34Z","timestamp":1728430714000},"page":"732-741","source":"Crossref","is-referenced-by-count":4,"title":["Clinical Analysis of Inhaled Nitric Oxide Therapy in Preterm Infants at Different Gestational Ages: A National Retrospective Multicenter Study"],"prefix":"10.1055","volume":"42","author":[{"given":"Guo-bao","family":"Liang","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Women and Children's Hospital, School of Medicine, Xiamen University, Xiamen, Fujian, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lian","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Women and Children's Hospital, School of Medicine, Xiamen University, Xiamen, Fujian, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sheng-qian","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Guiyang Maternal and Child Health Care Hospital, Guiyang Children's Hospital, Guiyang, Guizhou, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bao-ying","family":"Feng","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Maternal and Child Health Hospital of the Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mu-lin","family":"Yao","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Children's Hospital of Hebei Province, Shijiazhuang, Hebei, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xu-fang","family":"Fan","sequence":"additional","affiliation":[{"name":"Department of Neonatology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Meng-jiao","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Northwest Women's and Children's Hospital, Xi'an, Shanxi, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lu","family":"Zhu","sequence":"additional","affiliation":[{"name":"Department of Neonatology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jing","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhi","family":"Zheng","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Women and Children's Hospital, School of Medicine, Xiamen University, Xiamen, Fujian, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yao","family":"Zhu","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Women and Children's Hospital, School of Medicine, Xiamen University, Xiamen, Fujian, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wei","family":"Shen","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Women and Children's Hospital, School of Medicine, Xiamen University, Xiamen, Fujian, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wen-li","family":"Duan","sequence":"additional","affiliation":[{"name":"Department of Neonatology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jian","family":"Mao","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fan","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Neonatology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhan-kui","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Northwest Women's and Children's Hospital, Xi'an, Shanxi, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7934-0424","authenticated-orcid":false,"given":"Fa-lin","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Neonatology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Li","family":"Ma","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Children's Hospital of Hebei Province, Shijiazhuang, Hebei, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qiu-fen","family":"Wei","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Maternal and Child Health Hospital of the Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ling","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Guiyang Maternal and Child Health Care Hospital, Guiyang Children's Hospital, Guiyang, Guizhou, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xin-zhu","family":"Lin","sequence":"additional","affiliation":[{"name":"Department of Neonatology, Women and Children's Hospital, School 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