<?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>1665-5044</journal-id>
<journal-title><![CDATA[Revista mexicana de neurociencia]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. neurocienc.]]></abbrev-journal-title>
<issn>1665-5044</issn>
<publisher>
<publisher-name><![CDATA[Academia Mexicana de Neurología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-50442019000500237</article-id>
<article-id pub-id-type="doi">10.24875/rmn.m19000070</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Descriptive epidemiology of intracranial hemorrhage patterns and the main complaints motivating brain computed tomography scans in Northern Portugal]]></article-title>
<article-title xml:lang="es"><![CDATA[Epidemiología descriptiva de los patrones de hemorragia intracraneal y de las quejas principales motivadoras de TAC cerebral en el Norte de Portugal]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mascarenhas]]></surname>
<given-names><![CDATA[Lino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Hospitalar de Vila Nova de Gaia/Espinho Neurosurgery Service ]]></institution>
<addr-line><![CDATA[Vila Nova de Gaia ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2019</year>
</pub-date>
<volume>20</volume>
<numero>5</numero>
<fpage>237</fpage>
<lpage>243</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-50442019000500237&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-50442019000500237&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-50442019000500237&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background/Aims: This study aimed at documenting the patterns of intracranial hemorrhage encountered by means of brain computed tomography (CT) scan and characterizing the chief complaint that led to the diagnosis.  Methods: All the brain CT scans performed in a hospital serving 334,081 inhabitants in a 1-year period were reviewed. Categories of clinical situations and imaging findings were correlated among themselves and with population data to obtain incidence rates.  Results: A total of 8516 patients (M/F ratio 0.83; mean age 63.31) underwent brain CT scans and hemorrhage was present in 448 (5.26%). Head injury was the most frequent complaint motivating brain CT scan (30.11%) and acute subdural hemorrhage the most frequent pattern encountered (37.05%). An incidence rate of intracranial hemorrhage of 134.10, a global incidence rate of head injury of 767.48, and an incidence rate of hemorrhage of 76.33/100,000/year in the context of trauma were found. Incidence rates of hemorrhagic patterns more likely to be associated with a spontaneous origin add up to 45.2/100,000/year.  Conclusion: Traumatic patterns of hemorrhage are more frequent than those of spontaneous nature and head injury the most frequent indication for brain CT scan study. Although within the ranges reported in literature, incidence rates of hemorrhage in the studied population rank low for trauma and spontaneous subarachnoid and high for intracerebral. This indicator serves to characterize the health status of the community.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes/Objetivos: Este estudio tuvo como objetivo documentar los patrones de hemorragia intracraneal encontrados mediante tomografía computarizada cerebral y caracterizar la queja principal que condujo al diagnóstico.  Métodos: se revisaron todas las tomografías cerebrales realizadas en un hospital que atendía a 334,081 habitantes en un período de un año. Las categorías de situaciones clínicas y los hallazgos de imagen se correlacionaron entre sí y con los datos de población para obtener tasas de incidencia.  Resultados: 8.516 pacientes (relación M/F 0.83; edad media 63.31) se sometieron a tomografías computarizadas cerebrales y existía hemorragia en 448 (5.26%). Traumatismo craneal fue la queja más frecuente que motivó la TC cerebral (30.11%) y la hemorragia subdural aguda el patrón más frecuente encontrado (37.05%). Se encontró una tasa de incidencia de hemorragia intracraneal de 134.10, una tasa de incidencia global de traumatismo craneal de 767.48 y una tasa de incidencia de hemorragia de 76.33 por 100,000 por año en el contexto de trauma. Las tasas de incidencia de patrones hemorrágicos más propensos a asociarse con un origen espontáneo suman 45.2 por 100,000 por año.  Conclusión: Los patrones traumáticos de hemorragia son más frecuentes que los de naturaleza espontánea, y el traumatismo craneal es la indicación más frecuente para el estudio de tomografía computarizada cerebral. Aunque dentro de los rangos reportados en la literatura, las tasas de incidencia de hemorragia en la población estudiada son bajas para traumatismo y subaracnoidea espontánea, y altas para intracerebral. Este indicador sirve para caracterizar el estado de salud de la comunidad.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Incidence]]></kwd>
<kwd lng="en"><![CDATA[Head injury]]></kwd>
<kwd lng="en"><![CDATA[Intracerebral hemorrhage]]></kwd>
<kwd lng="en"><![CDATA[Spontaneous subarachnoid hemorrhage]]></kwd>
<kwd lng="en"><![CDATA[Portugal]]></kwd>
<kwd lng="es"><![CDATA[Incidencia]]></kwd>
<kwd lng="es"><![CDATA[Traumatismo craneal]]></kwd>
<kwd lng="es"><![CDATA[Hemorragia intracerebral]]></kwd>
<kwd lng="es"><![CDATA[Hemorragia subaracnoidea espontánea]]></kwd>
<kwd lng="es"><![CDATA[Portugal]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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