<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1688-1249</journal-id>
<journal-title><![CDATA[Archivos de Pediatría del Uruguay]]></journal-title>
<abbrev-journal-title><![CDATA[Arch. Pediatr. Urug.]]></abbrev-journal-title>
<issn>1688-1249</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Uruguaya de Pediatría]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1688-12492025000301313</article-id>
<article-id pub-id-type="doi">10.31134/ap.96.30</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Hidronefrosis neonatal severa asociada a hipertensión pulmonar persistente del recién nacido: un abordaje multidisciplinario]]></article-title>
<article-title xml:lang="en"><![CDATA[Severe neonatal hydronephrosis associated with persistent pulmonary hypertension of the newborn: a multidisciplinary approach]]></article-title>
<article-title xml:lang="pt"><![CDATA[Hidronefrose neonatal grave associada a hipertensão pulmonar persistente em recém-nascidos: perspectiva multidisciplinar]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Di Gifico]]></surname>
<given-names><![CDATA[Florencia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zurbriggen]]></surname>
<given-names><![CDATA[Candela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Centurión]]></surname>
<given-names><![CDATA[Julio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Berazategui]]></surname>
<given-names><![CDATA[Juan Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Sanatorio Anchorena San Martín Servicio Neonatología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<volume>96</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_arttext&amp;pid=S1688-12492025000301313&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_abstract&amp;pid=S1688-12492025000301313&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_pdf&amp;pid=S1688-12492025000301313&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Introducción: la hidronefrosis neonatal severa es una anomalía congénita que puede generar complicaciones renales y sistémicas. La hipertensión pulmonar persistente del recién nacido (HTPPN) es una condición crítica que puede agravar el pronóstico clínico. Este reporte de caso describe la evolución de un neonato con hidronefrosis severa y HTPPN, destacando la importancia del abordaje multidisciplinario.  Caso clínico:  recién nacido a término, con diagnóstico prenatal de dilatación pielocalicial leve del riñón izquierdo. Al nacer, presentó dificultad respiratoria grave, requiriendo intubación y ventilación de alta frecuencia oscilatoria con óxido nítrico. Se diagnosticó HTPPN mediante ecocardiografía. Se implementó soporte hemodinámico y antibioterapia empírica. A los 4 días de vida, se realizó nefrostomía percutánea, observándose mejoría clínica progresiva. Se documentó resolución parcial de la hipertensión pulmonar y estabilidad hemodinámica. Actualmente, el paciente continúa en seguimiento multidisciplinario con nefrología, urología y neonatología.  Conclusiones:  la hidronefrosis severa neonatal puede asociarse con HTPPN, complicando el manejo clínico. La identificación temprana y la intervención quirúrgica adecuada son claves para mejorar la evolución del paciente. Un enfoque multidisciplinario optimiza los resultados clínicos y reduce complicaciones a largo plazo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary:  Introduction:  severe neonatal hydronephrosis is a congenital anomaly that can lead to renal and systemic complications. Persistent pulmonary hypertension of the newborn (PPHN) is a critical condition that can worsen clinical prognosis. This case report describes the evolution of a neonate with severe hydronephrosis and PPHN, emphasizing the importance of a multidisciplinary approach.  Case Report:  a full-term newborn was prenatally diagnosed with mild left renal pelvis dilation. At birth, he presented severe respiratory distress, requiring intubation and high-frequency oscillatory ventilation with inhaled nitric oxide. PPHN was diagnosed via echocardiography. Hemodynamic support and empirical antibiotic therapy were initiated. On day 4 of life, a percutaneous nephrostomy was performed, leading to progressive clinical improvement. Partial resolution of pulmonary hypertension and hemodynamic stability were documented. The patient remains under multidisciplinary follow-up by nephrology, urology, and neonatology.  Conclusions:  severe neonatal hydronephrosis can be associated with PPHN, which can complicate clinical management. Early identification and appropriate surgical intervention are key to improving patient outcomes. A multidisciplinary approach optimizes clinical results and reduces long-term complications.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo:  Introdução: a hidronefrose neonatal grave é uma anomalia congênita que pode gerar complicações renais e sistêmicas. A hipertensão pulmonar persistente do recém-nascido (HPPRN) é uma condição crítica que pode agravar o prognóstico clínico. Este relato de caso descreve a evolução de um neonato com hidronefrose grave e HPPRN, destacando a importância da abordagem multidisciplinar.  Relato de Caso:  recém-nascido a termo, com diagnóstico pré-natal de dilatação pielocalicial leve do rim esquerdo. Ao nascer, apresentou dificuldade respiratória grave, necessitando de intubação e ventilação oscilatória de alta frequência com óxido nítrico. A HPPRN foi diagnosticada por ecocardiografia. Foi implementado suporte hemodinâmico e antibioticoterapia empírica. Aos 4 dias de vida, foi realizada nefrostomia percutânea, observando-se melhora clínica progressiva. Foi documentada resolução parcial da hipertensão pulmonar e estabilidade hemodinâmica. Atualmente, o paciente continua em acompanhamento multidisciplinar com nefrologia, urologia e neonatologia.  Conclusões:  a hidronefrose neonatal grave pode estar associada à HPPRN, complicando o manejo clínico. A identificação precoce e a intervenção cirúrgica adequada são fundamentais para melhorar a evolução do paciente. Uma abordagem multidisciplinar otimiza os resultados clínicos e reduz complicações a longo prazo.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Hidronefrosis]]></kwd>
<kwd lng="es"><![CDATA[Hipertensión Pulmonar]]></kwd>
<kwd lng="es"><![CDATA[Recién Nacido]]></kwd>
<kwd lng="en"><![CDATA[Hydronephrosis]]></kwd>
<kwd lng="en"><![CDATA[Hypertension, Pulmonary]]></kwd>
<kwd lng="en"><![CDATA[Infant, Newborn]]></kwd>
<kwd lng="pt"><![CDATA[Hidronefrose]]></kwd>
<kwd lng="pt"><![CDATA[Hipertensão Pulmonar]]></kwd>
<kwd lng="pt"><![CDATA[Recém-nascido]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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