E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Patients with suspected coronary artery disease and clinically referred for coronary CTA. |
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E.1.1.1 | Medical condition in easily understood language |
Patients with possible heart disease |
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E.1.1.2 | Therapeutic area | Analytical, Diagnostic and Therapeutic Techniques and Equipment [E] - Diagnosis [E01] |
MedDRA Classification |
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 |
Demonstrate that with contemporary cardiac CT scan protocols good opacification of the coronary arteries can be achieved, that is similar to low-osmolar contrast media injected at the same iodine delivery rate. |
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E.2.2 | Secondary objectives of the trial |
investigate the effect of iso-osmolar contrast media on heart rate and variability in relation to image quality. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
Age >18 yrs • Body weight 50 – 125 kg
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E.4 | Principal exclusion criteria |
• Pregnancy • Renal dysfunction defined as eGFR<45 ml/min • Allergies to iodine contrast media, manifest thyreotoxicosis • Arrhythmia, including atrial fibrillation/flutter, 2nd or 3rd degree AV block, frequent ectopic beats prior to the exam (discretion of the referrer). • Prior coronary artery bypass graft surgery or coronary stents • Contraindications to the contrast media according to SPC (summary of product characteristics)
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E.5 End points |
E.5.1 | Primary end point(s) |
Intra-coronary opacification: i.e. the mid-coronary lumen attenuation expressed in Hounsfield Units (HU), primary endpoint, demonstrating non-inferiority. Mean attenuation measured in the mid LAD (7), proximal LCX (11) and mid RCA (2), averaged per patient. Requirements: • Vessel: minimal diameter 2 mm, good or moderate image quality. • ROI size: circular shape, minimum 50 pixels per sample. • ROI placement: axial images, center of the vessel, optimal image quality,
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
After the last included patient' scan is performed |
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E.5.2 | Secondary end point(s) |
Quantitative and qualitative image quality • Differential contrast attenuation: proximal, mid, distal coronary arteries. • Signal to noise (attenuation versus SD) and contrast to noise ratios (difference between coronary and myocardium versus myocardium). • Subjective image quality of the coronary arteries on a 3-point scale: good, diagnostic, poor. • Image artifacts, categorized per segment • Contrast plateau characteristics: enhancement throughout the vasculature from systemic venous system to the descending aorta and myocardium.
Cardiovascular effects • Heart rate before scan (mean over 15s); during calcium score (mean over heart cycles during scan); during CTA (mean over heart cycles during scan). • Number of ectopic beats throughout the ECG recording during and after contrast injection. • Heart rate variability (variance to the mean RR duration) • Occurrence of atrial fibrillation.
Contrast injection parameters • Injection characteristics: accomplished flow rates, resistance, etc. • Clinical effect: patient discomfort at the injection site and adverse events, contrast reactions, nausea, etc. • Contrast delivery parameters (Certega box): • Injection rate and pressure
Clinical safety • Contrast extravasation (binary). • Severe arrhythmia, with hemodynamical significance. • Allergic reactions • Renal failure
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
After the last included patient' scan is performed |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | Yes |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | No |
E.6.5 | Efficacy | No |
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) | No |
E.7.4 | Therapeutic use (Phase IV) | Yes |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
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) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | Yes |
E.8.2.3.1 | Comparator description |
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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 | 3 |
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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the duration of study participation is limited to the time of the CT scan. The scan itself is similar to a routine clinical scan, without additional risk or discomfort. Both contrast media are registered and considered equally safe. The burden of the study is limited to the time spend discussing the study an dreading the patient information. The results of the study may benefit future patients in a similar situation, and can only be performed in this specific group (group related). |
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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 | 1 |
E.8.9.1 | In the Member State concerned months | 6 |
E.8.9.1 | In the Member State concerned days | 0 |