Aortic valve stenosis with reduced ejection fraction MedDRA version: 19.0 Level: PT Classification code 10002918 Term: Aortic valve stenosis System Organ Class: 10007541 - Cardiac disorders
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Inclusion criteria 1. Low-flow (SV index 18 years 3. Signed informed consent 4. Heart rate > 60 beats per minute Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 15 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 10
Exclusion criteria
Exclusion criteria: 1. Other moderate-severe valvular heart disease other than AS 2. Unwilling to participate in the study 3. Mental disorder precluding informed consent 4. Poor echocardiographic window 5. Chronic atrial fibrillation 6. Sinus node dysfunction 7. Bradycardia < 60 BPM 8. Complete AV block or permanent cardiac pacemaker 9. Hypotension <90/50 mmHg 10. Concomitant treatment with diltiazem or verapamil 11. Liver dysfunction with ALAT twice upper limit of normal. 12. Pregnancy
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Main Objective: The purpose of this study is to examine the safety and feasibility of oral admission of Ivabradine to patients with low-flow low-gradient severe Aortic stenosis (AS) and to compare the ability of Ivabradine with Dobutamine in differentiating true-severe AS from pseudo-severe AS. Primary objective In a population of patients with low-flow low-gradient severe AS with LVEF<50% to compare a. Changes in heart rate b. Changes in invasively measured SV, pulmonary wedge pressure (PCWP), mean pulmonary artery pressure (mPAP) and mean arterial pressure (MAP) c. Changes on echocardiography in LVEF, SV, global longitudinal strain, diastolic E/e’, mean and peak gradient, RV function and pulmonary pressure estimated by the tricuspid regurgitation gradient. After intravenous administration of Ivabradine compared to conventional low dose Dobutamine infusion ; Secondary Objective: Safety 1. In a population of patients with low-flow low-gradient severe AS to monitor a. Occurrence of bradycardia with heart rate <40 beats per min. b. Occurrence of symptoms (shortness of breath, angina, dizziness) c. Occurrence of cardiac arrhythmias on continuous ECG monitoring. ; Primary end point(s): a. Changes in heart rate b. Changes in invasively measured SV, pulmonary wedge pressure (PCWP), mean pulmonary artery pressure (mPAP) and mean arterial pressure (MAP) c. Changes on echocardiography in LVEF, SV, global longitudinal strain, diastolic E/e’, mean and peak gradient, RV function and pulmonary pressure estimated by the tricuspid regurgitation gradient. ;Timepoint(s) of evaluation of this end point: Will be evaluated every half our during the first 8 hours after administration. | — |
Secondary
| Measure | Time frame |
|---|---|
| Secondary end point(s): 1. In a population of patients with low-flow low-gradient severe AS to monitor serious adverse events a. Occurrence of bradycardia with heart rate <40 beats per min. b. Occurrence of symptoms (shortness of breath, angina, dizziness) c. Occurrence of cardiac arrhythmias on continuous ECG monitoring. ; Timepoint(s) of evaluation of this end point: Patients will be hemodynamically monitored at our intensive care unit during the first 8 hours after administration of Ivabradine. This will take place at the intensive care unit of our hospital. If any sign of adverse events occur monitoring will continue Potential serious adverse events (expected and unexpected) will be registered. As part of the safety objective (see 3.2), serious adverse events (described section 3.2) will be reported to the Principal investigator of this study (Sponsor) and the Danish Medicines Agency. In case of suspected unexpected serious adverse events the Danish Medicines Agency will be informed prior to 7 days. | — |
Countries
Denmark
Contacts
Odense University Hospital