E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Heart rate control in patients with chronic atrial fibrillation. |
Control de la frecuencia cardíaca en pacientes con fibrilación auricular permanente. |
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E.1.1.1 | Medical condition in easily understood language |
Chronic atrial fibrillation. |
Fibrilación auricular crónica. |
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E.1.1.2 | Therapeutic area | Diseases [C] - Cardiovascular Diseases [C14] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10071668 |
E.1.2 | Term | Permanent atrial fibrillation |
E.1.2 | System Organ Class | 100000004849 |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To compare the effect of two treatment strategies with respect to the reduction of the mean daytime HR measured with Holter-ECG at three months and compare the safety of the two treatment strategies with respect to syncope, severe bradycardia and serious adverse reactions that condition hospitalization, emergency visit or result in death. |
De eficacia: Comparar el efecto de dos estrategias de tratamiento con respecto a la reducción de la FC media diurna medida con Holter-ECG a los tres meses. De seguridad: comparar la seguridad de las dos estrategias de tratamiento con respecto a sincope, bradicardia grave y reacciones adversas graves que condicionen hospitalización, visita a urgencias o produzcan la muerte. |
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E.2.2 | Secondary objectives of the trial |
To compare the effect of the two treatment strategies, and depending on the basic treatment, with respect to: - Symptoms according to the EHRA Score scale evaluated at one and three months of treatment. - Distance in the 6-minute test. - Quality of life parameters analyzed in the questionnaires SF-36 and AFEQT. - Average daytime FC measured with a Holter-ECG. - FC at rest measured with an ECG. - Maximum FC measured with a Holter-ECG. - Average FC in 24 hours measured with a Holter-ECG. - FC Delta (difference between maximum HR and mean HR) measured with a Holter-ECG. - FC in moderate exercise measured with a Holter-ECG during the 6-minute test).
To compare the safety of the two treatment strategies with respect to: - Bradycardia not serious. - Any adverse reaction to the study drugs. - Voluntary withdrawal of the drug by the patient - Hospitalizations, emergency visits and mortality due to a major cardiovascular event during treatment with the study drugs. |
Comparar el efecto de las dos estrategias de tratamiento, y en función del tratamiento de base, con respecto a: - Síntomas de acuerdo a la escala EHRA Score. - Distancia recorrida en el test de 6 minutos. - Parámetros de calidad de vida analizados en los cuestionarios SF-36 y AFEQT. - FC media diurna medida con un Holter-ECG. - FC en reposo medida con un ECG. - FC máxima medida con un Holter-ECG. - FC media en 24 horas medida con un Holter-ECG. - Delta de FC (diferencia entre FC máxima y FC media) medida con un Holter-ECG. - FC en ejercicio moderado medida con un Holter-ECG durante la realización del test de 6 minutos).
Comparar la seguridad de las 2 estrategias de tratamiento con respecto a: - Bradicardia no grave. - Cualquier reacción adversa a los fármacos del estudio. - Abandono voluntario del fármaco por parte del paciente - Hospitalizaciones, visitas a urgencias y mortalidad por un evento cardiovascular mayor durante el tratamiento con los fármacos del estudio. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Age equal to or greater than 18 years. 2. Permanent FA at the time of randomization, with no prospect of cardioversion, antiarrhythmic treatment with group I or III drugs, or pulmonary vein ablation. 3. Symptoms attributable to AF associated with the presence of at least one of the following inadequate FC control criteria: a) HR at rest> 110 bpm (on ECG performed in the 14 days prior to inclusion). b) HR at rest between 80 and 110 bpm (on ECG performed in the 14 days prior to inclusion) and at least one of the following criteria: i. HR in exercise of moderate intensity> 130 bpm (measured in an ergometry or in a Holter-ECG performed in the 60 days prior to inclusion). ii. Average daytime HR ≥ 80 bpm (measured on a Holter-ECG performed in the 60 days prior to inclusion). 4. Be receiving treatment with beta-blockers or non-dihydropyridine calcium channel blockers (verapamil or diltiazem) at the maximum dose recommended or tolerated by the patient. 5. Be able to voluntarily give their informed consent (the subject himself, his legal representative or an impartial witness). 6. Blood test carried out in the 6 months prior to inclusion, including: blood count, thyroid hormones and creatinine, in order to rule out secondary causes of poor FC control. The creatinine figure will be used to calculate the creatinine clearance in order to adjust the dose of patients who are randomized to the Digoxin group. 7. Transthoracic echocardiogram to rule out, eg, severe valvular heart disease, hypertrophic cardiomyopathy. The one performed in the year prior to inclusion in the study will be considered acceptable provided that the patient's clinical situation has been stable in that period of time. |
1. Edad igual o superior a 18 años. 2. FA permanente en el momento de la aleatorización, sin perspectiva de cardioversión, tratamiento antiarrítmico con fármacos del grupo I o III, o ablación de venas pulmonares. 3. Síntomas atribuibles a FA asociados a la presencia de al menos uno de los siguientes criterios de control inadecuado de la FC: a) FC en reposo > 110 lpm (en ECG realizado en los 14 días previos a la inclusión). b) FC en reposo entre 80 y 110 lpm (en ECG realizado en los 14 días previos a la inclusión) y al menos uno de los siguientes criterios: i. FC en ejercicio de intensidad moderada > 130 lpm (medida en una ergometría o en un Holter-ECG realizados en los 60 días previos a la inclusión). ii. FC media diurna ≥ 80 lpm (medida en un Holter-ECG realizados en los 60 días previos a la inclusión). 4. Estar recibiendo tratamiento con betabloqueantes o calcioantagonistas no dihidropiridínicos (verapamilo o diltiazem) a la dosis máxima recomendada o tolerada por el paciente. 5. Ser capaz de otorgar voluntariamente su consentimiento informado (el propio sujeto, su representante legal o ante testigo imparcial). 6. Analítica de sangre realizada en los 6 meses previos a la inclusión que incluya: hemograma, hormonas tiroideas y creatinina, de cara a descartar causas secundarias de un mal control de la FC. La cifra de creatinina se utilizará para calcular el aclaramiento de creatinina con el objetivo de poder ajustar la dosis de los pacientes que se aleatoricen al grupo de Digoxina. 7. Ecocardiograma transtorácico para descartar, por ej., valvulopatías graves, miocardiopatía hipertrófica. Se considerará aceptable el realizado en el año previo a la inclusión en el estudio siempre y cuando la situación clínica del paciente haya sido estable en ese periodo de tiempo. |
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E.4 | Principal exclusion criteria |
1. Previous treatment or known contraindication to Ivabradine or Digoxin. 2. Paroxysmal or intermittent complete AV block in patients not carrying a pacemaker. 3. Decompensated heart failure requiring inotropic and / or intravenous diuretics in the week prior to randomization or in NYHA functional class IV or on the cardiac transplant waiting list. 4. Acute pericarditis, acute myocarditis or constrictive pericarditis. 5. Obstructive hypertrophic cardiomyopathy. 6. Valvular disease requiring surgical or percutaneous correction. 7. Medical causes that justify poor control of heart rate: fever, anemia, hyperthyroidism, pheochromocytoma, etc. 8. Severe hypotension (blood pressure <90/50 mmHg). 9. Concomitant treatment with potent cytochrome P450 3A4 inhibitors such as azole antifungals (ketoconazole, itraconazole), macrolide antibiotics (clarithromycin, oral erythromycin, josamycin, telithromycin), HIV protease inhibitors (nelfinavir, ritonavir) and nefazodone. 10. Severe renal insufficiency (CrCl <30 ml / Kg / min) or in a hemodialysis program. 11. Severe hepatic insufficiency. 12. Major surgery (including cardiac surgery) in the month prior to randomization. 13. Severe concomitant illness that supposes a life expectancy of less than one year. 14. Impossibility of carrying out scheduled visits to the protocol. 15. Suspected pregnancy or confirmed pregnancy. 16. Participation in a clinical trial in the previous 6 months. |
1. Tratamiento previo o contraindicación conocida a la Ivabradina o Digoxina. 2. Bloqueo AV completo paroxístico o intermitente en pacientes no portadores de marcapasos. 3. Insuficiencia cardiaca descompensada, que requiera inotrópicos y/o diuréticos intravenosos en la semana previa a la aleatorización o en clase funcional IV de la NYHA o en lista de espera de trasplante cardíaco. 4. Pericarditis aguda, miocarditis aguda o pericarditis constrictiva. 5. Miocardiopatía hipertrófica obstructiva. 6. Enfermedad valvular que requiera corrección quirúrgica o percutánea. 7. Causas médicas que justifiquen un mal control de la frecuencia cardiaca: fiebre, anemia, hipertiroidismo, feocromocitoma, etc. 8. Hipotensión grave (presión arterial < 90/50 mmHg). 9. Tratamiento concomitante con inhibidores potentes del citocromo P450 3A4 tales como antifúngicos azólicos (ketoconazol, itraconazol), antibióticos macrólidos (claritromicina, eritromicina por vía oral, josamicina, telitromicina), inhibidores de la proteasa del VIH (nelfinavir, ritonavir) y nefazodona. 10. Insuficiencia renal grave (ClCr < 30 ml/Kg/min) o en programa en hemodiálisis. 11. Insuficiencia hepática grave. 12. Cirugía mayor (incluida la cardiaca) en el mes previo a la aleatorización. 13. Enfermedad concomitante grave que suponga una expectativa de vida menor a un año. 14. Imposibilidad de realizar las visitas programadas en el protocolo. 15. Sospecha de embarazo o embarazo confirmado. 16. Participación en un ensayo clínico en los 6 meses previos. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Reducción de la Frecuencia Cardiaca media diurna registrada en Holter-ECG a los tres meses de tratamiento con Ivabradina o Digoxina. |
Reduction of the mean daytime heart rate registered in Holter-ECG after three months of treatment with Ivabradine or Digoxin. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
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E.5.2 | Secondary end point(s) |
1. Percentage of patients who experience a reduction in the scale of AF symptoms according to the EHRA Score modified at month and 3 months of treatment with Ivabradine or Digoxin. 2. Increase in the distance in the walking test 6 minutes after 3 months of treatment with Ivabradine or Digoxin. 3. Increase in the score obtained in global quality of life parameters analyzed by the SF-36 questionnaire after 3 months of treatment with Ivabradine or Digoxin. 4. Increase in the score obtained in parameters of quality of life quality of life associated with AF analyzed by the AFEQT questionnaire at 3 months of treatment with Ivabradine or Digoxin. 5. Reduction of the average daytime HR recorded in Holter-ECG after one month of treatment with Ivabradine or Digoxin. 6. Reduction of resting HR recorded on one ECG at one month and at 3 months of treatment with Ivabradine or Digoxin. 7. Reduction of the maximum HR recorded in Holter-ECG at one month and at 3 months of treatment with Ivabradine or Digoxin. 8. Reduction of the mean HR in 24 hours recorded in Holter-ECG at one month and at 3 months of treatment with Ivabradine or Digoxin. 9. Reduction of the HR delta (difference between maximum HR and mean HR in 24 hours) recorded in Holter-ECG at one month and at 3 months of treatment with Ivabradine or Digoxin. 10. Reduced HR in moderate exercise (maximum HR measured by Holter-ECG during the 6-minute walk test) during 3 months of treatment with Ivabradine or Digoxin. |
1. Porcentaje de pacientes que experimentan una reducción en la escala de síntomas de FA de acuerdo al EHRA Score modificado al mes y a los 3 meses de tratamiento con Ivabradina o Digoxina. 2. Incremento en la distancia recorrida en el test de caminar 6 minutos a los 3 meses de tratamiento con Ivabradina o Digoxina. 3. Incremento en la puntuación obtenida en parámetros de calidad de vida global analizados por el cuestionario SF-36 a los 3 meses de tratamiento con Ivabradina o Digoxina. 4. Incremento en la puntuación obtenida en parámetros de calidad de vida calidad de vida asociados a FA analizados por el cuestionario AFEQT a los 3 meses de tratamiento con Ivabradina o Digoxina. 5. Reducción de la FC media diurna registrada en Holter-ECG al mes de tratamiento con Ivabradina o Digoxina. 6. Reducción de la FC en reposo registrada en un ECG al mes y a los 3 meses de tratamiento con Ivabradina o Digoxina. 7. Reducción de la FC máxima registrada en Holter-ECG al mes y a los 3 meses de tratamiento con Ivabradina o Digoxina. 8. Reducción de la FC media en 24 horas registrada en Holter-ECG al mes y a los 3 meses de tratamiento con Ivabradina o Digoxina. 9. Reducción del delta de FC (diferencia entre la FC máxima y la FC media en 24 horas) registrada en Holter-ECG al mes y a los 3 meses de tratamiento con Ivabradina o Digoxina. 10. Reducción de la FC en ejercicio moderado (FC máxima medida por Holter-ECG durante la realización del test de caminar 6 minutos) los 3 meses de tratamiento con Ivabradina o Digoxina. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Three months after the start of treatment. |
A los tres meses de iniciado el tratamiento. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | Yes |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 9 |
E.8.5 | The trial involves multiple Member States | No |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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LVLS |
Última visita del último paciente |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | |
E.8.9.1 | In the Member State concerned months | 36 |
E.8.9.1 | In the Member State concerned days | |