| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated | 
| heart failure patients (III-IV NYHA) |  | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 9.1 |  
| E.1.2 | Level | HLGT |  
| E.1.2 | Classification code | 10019280 |  
| E.1.2 | Term | Heart failures |  | 
| 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 evaluate the effects of fondaparinux on biochemical parameters and clinical events according to different duration of treatment in heart failure patients (III-IV NYHA).  Primary end-point: circulating D-dimer plasma levels 2 months after enrolment |  | 
| E.2.2 | Secondary objectives of the trial | 
| Secondary endpoints:    circulating thrombin-antithrombin complexes (TAT), prothrombin fragment 1+2 (F1+2), interleukin-6 (IL-6), C-Reactive Protein (CRP), Tumor necrosis factor-alpha (TNF-alpha) at discharge and 1, 2 and 12 months after enrolment.    Circulating D-dimer plasma levels at discharge and 1, 12 months after enrolment.     Total mortality, cardiovascular mortality and need of re-hospitalization 12 months after enrolment.     Pulmonary emboly and/or deep vein thrombosis    Minor and major bleeding. |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| Diagnosis of heart failure according to the Framingham criteria(III-IV NYHA)    patients aged ≥ 60 years     Patients with a planned hospital stay of at least 4 days |  | 
| E.4 | Principal exclusion criteria | 
| Ischemic or haemorrhagic stroke within 12 months prior to admission;  Creatinin clearance < 20 ml/min;   Cerebral metastasis;  Acute bacterial endocarditis;  neoplastic or connective tissue disease;   a recent history(3 months) of brain, spinal, or ophthalmological surgery;  an indwelling intrathecal or epidural catheter; oral anticoagulant therapy; an indication for anticoagulant prophylaxis or therapy;  life expectancy of less than one month; use of any experimental drug within 30 days before admission;  major psychiatric disorders; Abuse of alcohol and / or drugs in the last year. |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Circulating D-dimer plasma levels 2 months after enrolment |  | 
| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis | No | 
| E.6.2 | Prophylaxis | Yes | 
| 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) | 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 | 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 | 
| stesso farmaco con durata differente della terapia |  | 
| 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.8.4.1 | Number of sites anticipated in Member State concerned | 1 | 
| 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 | 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 |  | 
| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 3 | 
| E.8.9.1 | In the Member State concerned months | 0 | 
| E.8.9.1 | In the Member State concerned days |  | 
| E.8.9.2 | In all countries concerned by the trial years | 3 | 
| E.8.9.2 | In all countries concerned by the trial months | 0 |