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In this trial, the investigators will assess the effect of metoprolol in patients with hypertrophic cardiomyopathy who underwent alcohol septal ablation. The investigators will evaluate the quality of life, exercise tolerance, echocardiographic parameters and laboratory marker of heart failure and myocardial injury.
In this trial, the investigators will assess the effect of metoprolol in patients with hypertrophic cardiomyopathy who underwent alcohol septal ablation.
The investigators will evaluate the quality of life, exercise tolerance, echocardiographic parameters and laboratory marker of heart failure and myocardial injury.
The investigators will enroll 50 patients that will meet all the inclusion criteria and will agree to participate in the trial. In patients with preceding beta-blocker medication, it will be discontinued and a washout period of one month will be provided. The investigators will assess baseline characteristics and then divide patients randomly into two arms based on their date of birth (even/odd days of the month).
Arm A will be given metoprolol 50 mg daily for three months, after this period the effect will be evaluated and metoprolol discontinued. A month-long washout period will follow and after an additional three months without metoprolol medication, patients will be reevaluated.
Arm B will be without metoprolol for three months and will be evaluated thereafter. Then the patients will be given metoprolol 50 mg daily for three months followed by a reevaluation.
The investigators will evaluate the effect of metoprolol by multiple methods at the end of the 5th and 9th months of the trial. Quality of life will be assessed by a questionnaire (The Kansas City Cardiomyopathy Questionnaire), exercise tolerance by a spiroergometry (VO2 max). A conventional echocardiographic examination and an examination focused on exercise-induced left ventricular outflow tract obstruction will be performed. The investigators will also measure NTproBNP from a blood sample as a laboratory marker of heart failure and high sensitive troponin as a marker of myocardial injury.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| metoprolol-no metoprolol | Experimental | After a washout period of one month following discontinuation of preceding beta-blocker medication patients will be given metoprolol 50 mg daily. The effect will be evaluated after three months of treatment. After that, another one-month washout period will commence followed by three months without metoprolol medication. Then, a final reevaluation will be performed. |
|
| no metoprolol-metoprol | Experimental | After a one-month washout period following discontinuation of preceding beta-blocker medication patients will continue another three months without a metoprolol medication. After that, an evaluation will be performed. Then they will be given metoprolol 50 mg daily for three months followed by a reevaluation. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Metoprolol | Drug | metoprolol 50 mg daily for three months |
|
| Measure | Description | Time Frame |
|---|---|---|
| Change in exercise tolerance with and without metoprolol | VO2max during bicycle ergometer exercise test | At baseline, after three months of metoprolol medication, after three months without metoprolol medication |
| Measure | Description | Time Frame |
|---|---|---|
| Change of quality of life with and without metoprolol: The Kansas City Cardiomyopathy Questionnaire | The Kansas City Cardiomyopathy Questionnaire, score 0-100 (higher score means better outcome) | After three months of metoprolol medication, after three months without metoprolol medication |
| Change of concentration of biomarker of heart failure with and without metoprolol |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Josef Veselka, MD, PhD | Motol University Hospital, Department of Cardiology | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Motol University Hospital | Prague | Czech Republic | 15000 | Czechia |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 22068434 | Background | Gersh BJ, Maron BJ, Bonow RO, Dearani JA, Fifer MA, Link MS, Naidu SS, Nishimura RA, Ommen SR, Rakowski H, Seidman CE, Towbin JA, Udelson JE, Yancy CW; American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines; American Association for Thoracic Surgery; American Society of Echocardiography; American Society of Nuclear Cardiology; Heart Failure Society of America; Heart Rhythm Society; Society for Cardiovascular Angiography and Interventions; Society of Thoracic Surgeons. 2011 ACCF/AHA guideline for the diagnosis and treatment of hypertrophic cardiomyopathy: a report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines. Circulation. 2011 Dec 13;124(24):e783-831. doi: 10.1161/CIR.0b013e318223e2bd. Epub 2011 Nov 8. No abstract available. | |
| 14607462 |
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| ID | Term |
|---|---|
| D002312 | Cardiomyopathy, Hypertrophic |
| D000092242 | Ventricular Outflow Obstruction, Left |
| ID | Term |
|---|---|
| D009202 | Cardiomyopathies |
| D006331 | Heart Diseases |
| D002318 | Cardiovascular Diseases |
| D001020 | Aortic Stenosis, Subvalvular |
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| ID | Term |
|---|---|
| D008790 | Metoprolol |
| ID | Term |
|---|---|
| D050198 | Phenoxypropanolamines |
| D011412 | Propanolamines |
| D000605 | Amino Alcohols |
| D000438 | Alcohols |
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We will enroll 50 patients and divide them into two arms. Initially, arm A will be given metoprolol and arm B will not. We will evaluate the two groups after a sufficient time period (three months) and after that, patients will cross-over to the other treatment strategy for three months followed by a final evaluation.
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N-Terminal Pro-Brain Natriuretic Peptide concentration in blood sample |
| After three months of metoprolol medication, after three months without metoprolol medication |
| Change of concentration of a biomarker of myocardial injury with and without metoprolol | High sensitivity troponin concentration in blood sample | After three months of metoprolol medication, after three months without metoprolol medication |
| Change in exercise induced pressure gradient in left ventricular outflow tract with and without metoprolol | mmHg | After three months of metoprolol medication, after three months without metoprolol medication |
| Change in left ventricular diastolic function at rest with and without metoprolol | Echocardiographic parameters of the transmitral flow and tissue Doppler | After three months of metoprolol medication, after three months without metoprolol medication |
| Background |
| Maron BJ, McKenna WJ, Danielson GK, Kappenberger LJ, Kuhn HJ, Seidman CE, Shah PM, Spencer WH 3rd, Spirito P, Ten Cate FJ, Wigle ED; Task Force on Clinical Expert Consensus Documents. American College of Cardiology; Committee for Practice Guidelines. European Society of Cardiology. American College of Cardiology/European Society of Cardiology clinical expert consensus document on hypertrophic cardiomyopathy. A report of the American College of Cardiology Foundation Task Force on Clinical Expert Consensus Documents and the European Society of Cardiology Committee for Practice Guidelines. J Am Coll Cardiol. 2003 Nov 5;42(9):1687-713. doi: 10.1016/s0735-1097(03)00941-0. No abstract available. |
| 14105035 | Background | HARRISON DC, BRAUNWALD E, GLICK G, MASON DT, CHIDSEY CA, ROSS J Jr. EFFECTS OF BETA ADRENERGIC BLOCKADE ON THE CIRCULATION WITH PARTICULAR REFERENCE TO OBSERVATIONS IN PATIENTS WITH HYPERTROPHIC SUBAORTIC STENOSIS. Circulation. 1964 Jan;29:84-98. doi: 10.1161/01.cir.29.1.84. No abstract available. |
| 6067064 | Background | Cohen LS, Braunwald E. Amelioration of angina pectoris in idiopathic hypertrophic subaortic stenosis with beta-adrenergic blockade. Circulation. 1967 May;35(5):847-51. doi: 10.1161/01.cir.35.5.847. No abstract available. |
| 1516184 | Background | Fananapazir L, Chang AC, Epstein SE, McAreavey D. Prognostic determinants in hypertrophic cardiomyopathy. Prospective evaluation of a therapeutic strategy based on clinical, Holter, hemodynamic, and electrophysiological findings. Circulation. 1992 Sep;86(3):730-40. doi: 10.1161/01.cir.86.3.730. |
| 8496536 | Background | Gilligan DM, Chan WL, Joshi J, Clarke P, Fletcher A, Krikler S, Oakley CM. A double-blind, placebo-controlled crossover trial of nadolol and verapamil in mild and moderately symptomatic hypertrophic cardiomyopathy. J Am Coll Cardiol. 1993 Jun;21(7):1672-9. doi: 10.1016/0735-1097(93)90386-f. |
| 22633205 | Background | Nistri S, Olivotto I, Maron MS, Ferrantini C, Coppini R, Grifoni C, Baldini K, Sgalambro A, Cecchi F, Maron BJ. beta Blockers for prevention of exercise-induced left ventricular outflow tract obstruction in patients with hypertrophic cardiomyopathy. Am J Cardiol. 2012 Sep 1;110(5):715-9. doi: 10.1016/j.amjcard.2012.04.051. Epub 2012 May 24. |
| 18212300 | Background | Fifer MA, Vlahakes GJ. Management of symptoms in hypertrophic cardiomyopathy. Circulation. 2008 Jan 22;117(3):429-39. doi: 10.1161/CIRCULATIONAHA.107.694158. No abstract available. |
| 24290569 | Background | Desai MY, Bhonsale A, Patel P, Naji P, Smedira NG, Thamilarasan M, Lytle BW, Lever HM. Exercise echocardiography in asymptomatic HCM: exercise capacity, and not LV outflow tract gradient predicts long-term outcomes. JACC Cardiovasc Imaging. 2014 Jan;7(1):26-36. doi: 10.1016/j.jcmg.2013.08.010. Epub 2013 Nov 27. |
| D001024 |
| Aortic Valve Stenosis |
| D000082862 | Aortic Valve Disease |
| D006349 | Heart Valve Diseases |
| D014694 | Ventricular Outflow Obstruction |
| D009930 |
| Organic Chemicals |
| D020005 | Propanols |
| D000588 | Amines |