<?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>0003-3170</journal-id>
<journal-title><![CDATA[Angiología]]></journal-title>
<abbrev-journal-title><![CDATA[Angiología]]></abbrev-journal-title>
<issn>0003-3170</issn>
<publisher>
<publisher-name><![CDATA[Arán Ediciones S.L.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0003-31702023000200004</article-id>
<article-id pub-id-type="doi">10.20960/angiologia.00429</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Hematoma retroperitoneal espontáneo en pacientes con neumonía grave por SARS-CoV-2]]></article-title>
<article-title xml:lang="en"><![CDATA[Spontaneous retroperitoneal hematoma in patients with severe SARS-CoV-2 pneumonia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villota-Tamayo]]></surname>
<given-names><![CDATA[Beatriz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Perfecto-Valero]]></surname>
<given-names><![CDATA[Arkaitz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández-Fernández]]></surname>
<given-names><![CDATA[June]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pascual-Vicente]]></surname>
<given-names><![CDATA[Teresa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villalabeitia-Ateca]]></surname>
<given-names><![CDATA[Ibabe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tellaeche-de la Iglesia]]></surname>
<given-names><![CDATA[Míriam]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aranda-Escaño]]></surname>
<given-names><![CDATA[Elena María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sarriugarte-Lasarte]]></surname>
<given-names><![CDATA[Aingeru]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Investigación Sanitaria BioCruces Hospital Universitario de Cruces Servicio de Cirugía General y del Aparato Digestivo]]></institution>
<addr-line><![CDATA[Barakaldo Bizkaia]]></addr-line>
<country>España</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Universitario de Cruces Unidad de Cirugía Hepatobiliar, del Retroperitoneo y Trasplante Hepático ]]></institution>
<addr-line><![CDATA[Barakaldo Bizkaia]]></addr-line>
<country>España</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Universitario de Galdakao Servicio de Angiología, Cirugía Vascular y Endovascular ]]></institution>
<addr-line><![CDATA[Galdakao Bizkaia]]></addr-line>
<country>España</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Hospital Universitario de Cruces Unidad de Cirugía Esofagogástrica, Bariátrica y de Pared Abdominal Compleja ]]></institution>
<addr-line><![CDATA[Barakaldo Bizkaia]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2023</year>
</pub-date>
<volume>75</volume>
<numero>2</numero>
<fpage>85</fpage>
<lpage>96</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S0003-31702023000200004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S0003-31702023000200004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S0003-31702023000200004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Recientemente se han publicado varios casos de hematomas retroperitoneales espontáneos (HRE) en el contexto de infección por SARS-CoV-2. Este estudio presenta una revisión sistemática de la literatura con el objetivo de profundizar en esta infrecuente asociación. Se identificaron 32 casos de HRE, el 28,1 % con enfermedad COVID-19 crítica. El 68,7 % recibió anticoagulación con HBPM y el 15,6 % con heparina sódica. La mediana de días hasta el diagnóstico fue de 10,5 (rango de 0-38). En el 31,2 % de los casos se optó por manejo conservador, mientras que otro 31,2 % requirió angioembolización. Se comunicaron 10 exitus (31,2 %), 6 probablemente relacionados con el HRE. Existen hipótesis acerca de la relación entre la infección por SARS-CoV-2 y los fenómenos hemorrágicos. Se han descrito dos mecanismos que explicarían la coagulopatía: la unión al receptor ACE2 y la acción directa del virus sobre el endotelio vascular. Por otra parte, la disfunción plaquetaria, la trombocitopenia inmune y la respuesta al SIRS, así como los microtraumas secundarios al esfuerzo tusígeno, la ventilación mecánica invasiva o los cambios posturales, sugieren un origen multicausal del HRE. La literatura sobre esta asociación es escasa. Dado el exceso de morbimortalidad que supone, se considera necesario profundizar en su investigación.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Recently, cases of spontaneous retroperitoneal haematomas (SRH) in the context of SARS-CoV-2 infection have been published. This study presents a systematic review with the aim of further investigating this rare association. Thirty-two cases were identified, with a 28,1 % of critical patients. A total of 68,7 % received anticoagulation with LMWH, and a 15,6 % with UFH. The median number of days to diagnosis was 10,5 (0-38). Conservative management was chosen in 31,2 %, while another 31,2 % required angio-embolisation. Ten exitus (31,2 %) were reported, 6 related to SRH. There are hypotheses on the link between SARS-CoV-2 infection and haemorrhagic phenomena. Two mechanisms have been described that would explain coagulopathy: the binding of SARS-CoV-2 to the ACE2 receptor and its direct action on the vascular endothelium. Furthermore, the platelet dysfunction, immune thrombocytopenia and SIRS, added to the endothelial disruption in retroperitoneal vessels, as well as microtrauma secondary to cough stress, invasive mechanical ventilation and/or postural changes, suggest a multicausal origin of SRH. The literature concerning this association is scarce. Given the excess morbidity and mortality involved, it is considered necessary to investigate it further.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Hematoma retroperitoneal]]></kwd>
<kwd lng="es"><![CDATA[COVID]]></kwd>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="es"><![CDATA[Angioembolización]]></kwd>
<kwd lng="en"><![CDATA[Spontaneous retroperitoneal hematoma]]></kwd>
<kwd lng="en"><![CDATA[COVID]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[Angioembolisation]]></kwd>
</kwd-group>
</article-meta>
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