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        "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">El objetivo de este trabajo ha sido comparar en pacientes asm&#225;ticos una teofilina de acci&#243;n sostenida de administraci&#243;n cada 24 horas con las de administraci&#243;n cada 12 en relaci&#243;n a&#58; la estabilidad cl&#237;nica y funcional respiratoria&#44; los efectos secundarios y las dosis requeridas en funci&#243;n de la tolerancia cl&#237;nica y las concentraciones plasm&#225;ticas&#46;</p><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Se seleccionaron pacientes con asma bronquial en fase estable que segu&#237;an tratamiento con teofilinas de 12 horas&#46; Cada sujeto recibi&#243; teofdinas de 12 y de 24 horas en un estudio prospectivo&#44; cruzado y con datos apareados durante per&#237;odos de 15 d&#237;as&#46; Se evaluaron las dosis de teofdinas&#44; teofilinemias&#44; evoluci&#243;n cl&#237;nica y funcional respiratoria&#44; y los efectos secundarios&#46;</p><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Se incluyeron 20 casos&#46; No hubo diferencias notables en las dosis medias de teofilina por kilogramo de peso requeridas para obtener concentraciones plasm&#225;ticas terap&#233;uticas entre los 2 tratamientos &#40;tratamiento A&#58; 9&#44;36<span class="elsevierStyleInf">1</span><span class="elsevierStyleHsp" style=""></span>&#177;<span class="elsevierStyleHsp" style=""></span>1&#44;88<span class="elsevierStyleHsp" style=""></span>mg&#47;kg&#47;d&#237;a&#44; tratamiento B&#58; 9&#44;6<span class="elsevierStyleHsp" style=""></span>&#177;<span class="elsevierStyleHsp" style=""></span>1&#44;7<span class="elsevierStyleHsp" style=""></span>mg&#47;kg&#47;d&#237;a&#41;&#46; La teofilinemia media en el momento previo a la administraci&#243;n de la siguiente dosis fue menor con las teofilinas de 24 horas&#44; pero dentro de los m&#225;rgenes terap&#233;uticos &#40;tratamiento A&#58; 7&#44;31<span class="elsevierStyleHsp" style=""></span>&#177;<span class="elsevierStyleHsp" style=""></span>2&#44;27<span class="elsevierStyleHsp" style=""></span>&#956;g&#47;ml&#59; tratamiento B&#58; 10&#44;66<span class="elsevierStyleHsp" style=""></span>&#177;<span class="elsevierStyleHsp" style=""></span>2&#44;86<span class="elsevierStyleHsp" style=""></span>&#956;g&#47;ml&#59; p<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#44;002&#41;&#46; No hubo diferencias en los efectos secundarios tras el per&#237;odo de ajuste ni en el FEV<span class="elsevierStyleInf">1</span> al finalizar cada per&#237;odo de tratamiento&#46; El flujo espiratorio m&#225;ximo se mantuvo estable durante todo el estudio&#46;</p><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">En los pacientes asm&#225;ticos&#44; las teofilinas retardadas de 24 horas en relaci&#243;n a las de 12 horas&#44; consiguieron con dosis similares concentraciones plasm&#225;ticas terap&#233;uticas durante las 24 horas del d&#237;a&#46;</p></span>"
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Teofilinas de liberación sostenida de 12 y 24 horas. Estudio comparativo
A comparison of 12 and 24 hours sustained-release theophylline formulas
M. Vendrell1, X. Muñoz, J. de Gracia, F. Morell, A. Anguera, C. Mayordomo
Servicio de Neumología. Hospital General Universitario Vall d’Hebron. Barcelona
L. Pou*
* Servicio de Bioquímica. Hospital General Universitario Vall d’Hebron. Barcelona
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        "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">El objetivo de este trabajo ha sido comparar en pacientes asm&#225;ticos una teofilina de acci&#243;n sostenida de administraci&#243;n cada 24 horas con las de administraci&#243;n cada 12 en relaci&#243;n a&#58; la estabilidad cl&#237;nica y funcional respiratoria&#44; los efectos secundarios y las dosis requeridas en funci&#243;n de la tolerancia cl&#237;nica y las concentraciones plasm&#225;ticas&#46;</p><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Se seleccionaron pacientes con asma bronquial en fase estable que segu&#237;an tratamiento con teofilinas de 12 horas&#46; Cada sujeto recibi&#243; teofdinas de 12 y de 24 horas en un estudio prospectivo&#44; cruzado y con datos apareados durante per&#237;odos de 15 d&#237;as&#46; Se evaluaron las dosis de teofdinas&#44; teofilinemias&#44; evoluci&#243;n cl&#237;nica y funcional respiratoria&#44; y los efectos secundarios&#46;</p><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Se incluyeron 20 casos&#46; No hubo diferencias notables en las dosis medias de teofilina por kilogramo de peso requeridas para obtener concentraciones plasm&#225;ticas terap&#233;uticas entre los 2 tratamientos &#40;tratamiento A&#58; 9&#44;36<span class="elsevierStyleInf">1</span><span class="elsevierStyleHsp" style=""></span>&#177;<span class="elsevierStyleHsp" style=""></span>1&#44;88<span class="elsevierStyleHsp" style=""></span>mg&#47;kg&#47;d&#237;a&#44; tratamiento B&#58; 9&#44;6<span class="elsevierStyleHsp" style=""></span>&#177;<span class="elsevierStyleHsp" style=""></span>1&#44;7<span class="elsevierStyleHsp" style=""></span>mg&#47;kg&#47;d&#237;a&#41;&#46; La teofilinemia media en el momento previo a la administraci&#243;n de la siguiente dosis fue menor con las teofilinas de 24 horas&#44; pero dentro de los m&#225;rgenes terap&#233;uticos &#40;tratamiento A&#58; 7&#44;31<span class="elsevierStyleHsp" style=""></span>&#177;<span class="elsevierStyleHsp" style=""></span>2&#44;27<span class="elsevierStyleHsp" style=""></span>&#956;g&#47;ml&#59; tratamiento B&#58; 10&#44;66<span class="elsevierStyleHsp" style=""></span>&#177;<span class="elsevierStyleHsp" style=""></span>2&#44;86<span class="elsevierStyleHsp" style=""></span>&#956;g&#47;ml&#59; p<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#44;002&#41;&#46; No hubo diferencias en los efectos secundarios tras el per&#237;odo de ajuste ni en el FEV<span class="elsevierStyleInf">1</span> al finalizar cada per&#237;odo de tratamiento&#46; El flujo espiratorio m&#225;ximo se mantuvo estable durante todo el estudio&#46;</p><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">En los pacientes asm&#225;ticos&#44; las teofilinas retardadas de 24 horas en relaci&#243;n a las de 12 horas&#44; consiguieron con dosis similares concentraciones plasm&#225;ticas terap&#233;uticas durante las 24 horas del d&#237;a&#46;</p></span>"
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ISSN: 03002896
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