Study to assess the tolerability of an intravenous infusion of 0.5 and 1.0 mg (actual 0.8 mg) BIBT 986 BS per hour over 32 hours as well as pharmacokinetics and the effect on blood coagulation parameters

Inclusion Criteria:

• Healthy male subjects as determined by results of screening
• Signed written informed consent in accordance with Good Clinical Practice (GCP) and local legislation
• Age >= 18 and <= 55 years
• BMI >= 18.5 and <= 29.9 kg/m2

Exclusion Criteria:

• Any finding of the medical examination (including blood pressure, pulse rate, and electrocardiogram) deviating from normal and of clinical relevance
• Gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunologic or hormonal disorders
• Surgery of gastrointestinal tract (except appendectomy)
• Diseases of the central nervous system (such as epilepsy) or psychiatric disorders or neurological disorders
• Relevant history of orthostatic hypotension, fainting spells or blackouts
• Abnormal PT, TT, aPTT (must be within the normal range after no more than one repeated test), thrombocytes < 150000/μl (two repeats of the first test)
• Evidence of hematuria either macroscopically detectable or microscopic on urinalysis (normal microscopic results after no more than one repeated test)
• Evidence of blood dyscrasia, hemorrhagic diathesis, severe thrombocytopenia, cerebrovascular hemorrhage, bleeding tendencies associated with active ulceration or overt bleeding of gastrointestinal, respiratory or genitourinary tract or any disease or condition with hemorrhagic tendencies (e.g. cerebral aneurysm, dissecting aorta, Central nervous system (CNS) trauma, retinopathy, nephrolithiasis)
• Recent or contemplated diagnostic or therapeutic procedures with potential for uncontrollable bleeding (e.g. spinal puncture, lumbar block anaesthesia, surgery of CNS or eye or surgery resulting in large open surfaces) within 14 days before or after drug administration of this clinical trial
• Occult blood in 1 of 3 subsequent faecal samples collected for the pre-study examination
• Chronic or relevant acute infections
• History of allergy/hypersensitivity (including drug allergy) which is deemed relevant to the trial as judged by the investigator
• Intake of drugs with a long half-life (> 24 hours) (< 1 month prior to administration or during the trial)
• Use of any drugs, within 14 days prior to administration or during the trial
• Participation in another trial with an investigational drug (< 2 months prior to administration or during trial)
• Smoker (> 10 cigarettes or >3 cigars or >3 pipes/day)
• Alcohol abuse (> 60 g/day)
• Drug abuse
• Blood donation or loss > 400 mL, < 1 month prior to administration or during the trial
• Excessive physical activities < 5 days prior to administration of study drug or during trial
• Clinically relevant laboratory abnormalities
• Veins unsuited for i.v. puncture and administration of prolonged infusions on either arm (e.g. veins which are difficult to locate, access or puncture, veins with a tendency to rupture during or after puncture, etc.)