2014
DOI: 10.5414/cp202065
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A thorough QT study of guanfacine

Abstract: Neither therapeutic nor supra-therapeutic doses of guanfacine prolonged QT interval after adjusting for heart rate using individualized correction, QTcNi, through 12 hours postdose. Guanfacine does not appear to interfere with cardiac repolarization of the form associated with pro-arrhythmic drugs.

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Cited by 9 publications
(13 citation statements)
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“…These findings from the different trials assessing the efficacy of GXR for ADHD are consistent with a thorough, double-blind, crossover QT study of GIR (at therapeutic [4 mg] and supratherapeutic [8 mg] doses) conducted in a sample of 83 healthy adults. 70 Moreover, as expected, TEAEs were mild, but neither therapeutic nor supratherapeutic doses of guanfacine prolonged QTcF interval through 12 hours postdose, thus supporting the view that guanfacine does not appear to interfere with cardiac repolarization of the form associated with proarrhythmic drugs. 70 …”
Section: Safety and Tolerability Of Guanfacinementioning
confidence: 58%
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“…These findings from the different trials assessing the efficacy of GXR for ADHD are consistent with a thorough, double-blind, crossover QT study of GIR (at therapeutic [4 mg] and supratherapeutic [8 mg] doses) conducted in a sample of 83 healthy adults. 70 Moreover, as expected, TEAEs were mild, but neither therapeutic nor supratherapeutic doses of guanfacine prolonged QTcF interval through 12 hours postdose, thus supporting the view that guanfacine does not appear to interfere with cardiac repolarization of the form associated with proarrhythmic drugs. 70 …”
Section: Safety and Tolerability Of Guanfacinementioning
confidence: 58%
“…70 Moreover, as expected, TEAEs were mild, but neither therapeutic nor supratherapeutic doses of guanfacine prolonged QTcF interval through 12 hours postdose, thus supporting the view that guanfacine does not appear to interfere with cardiac repolarization of the form associated with proarrhythmic drugs. 70 …”
Section: Safety and Tolerability Of Guanfacinementioning
confidence: 58%
“…También se ha comprobado la eficacia de la LDX en pacientes tratados previamente con MPH y cuya respuesta no fue adecuada, medida cuantitativamente -menos de un 30% de reducción en la ADHD Rating Scale (ADHD-RS)-, con una respuesta clínica adecuada en casi el 80% de los pacientes, que en numerosas ocasiones se acompañó de una mejoría en la manifestación de los sentimientos medida a través de la escala de expresión emocional para niños [22,23]. De igual forma, los diferentes trabajos han demostrado la alta seguridad del producto [7,13,15,19,[23][24][25][26][27][28][29][30][31][32][33][34].…”
Section: Acción Efectiva Aproximadaunclassified
“…Los incrementos conocidos de la frecuencia cardíaca tras la retirada de la GXR señalan la recomendación lógica de proceder a una retirada lenta en los casos que así se precise (por efectos adversos o ine ficacia). Aunque se han descrito unos 'supuestos casos aislados' (con una dudosa relación causa-efecto) de muerte súbita en pacientes tratados con clonidina y estimulantes, no se han comunicado casos similares con la GXR [31,32]. En caso de patología cardíaca conocida, antecedentes de muerte súbita o historia familiar o personal de un síndrome de QT largo, deberá realizarse una interconsulta a cardiología antes de comenzar el tratamiento.…”
Section: Guanfacina De Liberación Retardadaunclassified
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