| E.1 Medical condition or disease under investigation |
| E.1.1 | Medical condition(s) being investigated |
- Rhegmatogenous retinal detachment requiring cryocoagulation and episcleral explant. - Glaucoma requiring cryocoagulation of the ciliary body.
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| 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 |
| To determine the beneficial effect of a single dose of 150 µg clonidine as an adjuvant to chirocaine in retrobulbar block. |
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| E.2.2 | Secondary objectives of the trial |
| To obtain an estimate of the pharmacokinetic properties of clonidine after retrobulbar injection. |
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| E.2.3 | Trial contains a sub-study | No |
| E.3 | Principal inclusion criteria |
- Age ≥ 18 years. - Informed consent. - Rhegmatogenous retinal detachment requiring cryocoagulation and episcleral explant. - Glaucoma requiring cryocoagulation of the ciliary body.
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| E.4 | Principal exclusion criteria |
- Hypersensitivity to clonidine or any other ingredients in the product. - Severe bradyarrhythmia as a result of sick sinus syndrome or 2nd or 3rd degree AV block. - Use of oral clonidine. - Cerebrovascular disease, heart failure, coronary insufficiency, occlusive peripheral vascular disorder. - Lapp lactase deficiency or glucose-galactose malabsorption. - Bipolar disorder. - All (other) contraindications and warnings mentioned in the Summary of Product Characteristics of Catapresan.
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| E.5 End points |
| E.5.1 | Primary end point(s) |
Maximal pain level. Time of maximal post-operative pain. Amount of escape medication used. Time of use.
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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 | No |
| E.6.5 | Efficacy | Yes |
| E.6.6 | Pharmacokinetic | Yes |
| 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 | Yes |
| E.8.1.4 | Double blind | No |
| E.8.1.5 | Parallel group | Yes |
| 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 |
| Local anesthesia without the adjuvant. |
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| E.8.3 |
The trial involves single site in the Member State concerned
| Yes |
| E.8.4 | The trial involves multiple sites in the Member State concerned | No |
| 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 | Information not present in EudraCT |
| E.8.7 | Trial has a data monitoring committee | Yes |
| 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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| If the results (after completion of either block 1 or block 3) with respect to the reported pain level and time of (maximal) post-operative pain are worse (i.e. Δt = ─2 h) in group 2 (clonidine) than in group 1 (control) the study will be terminated. |
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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 | 2 |
| E.8.9.1 | In the Member State concerned months | 0 |
| E.8.9.1 | In the Member State concerned days | 0 |
| E.8.9.2 | In all countries concerned by the trial years | 0 |
| E.8.9.2 | In all countries concerned by the trial months | 0 |
| E.8.9.2 | In all countries concerned by the trial days | 0 |