The Effect of Administration of Low Dose Adrenaline During Surgery on Bleeding During Hip Surgery

Inclusion Criteria: * Age \> 18 years. * Scheduled for primary unilateral hip arthroplasty * Able to give consent Exclusion Criteria: * Allergy towards adrenaline * Current treatment with: ADP receptor inhibitors or Vitamin K antagonists (within 5 days), Factor Xa inhibitors or Thrombin inhibitors (within 1 day), heparin (excluding low molecular weight heparin for perioperative thromboprophylaxis). * Current treatment with tricyclic antidepressants * Use of MAO inhibitors (within previous 14 days) or COMT inhibitors (within 2 days). * Acute coronary syndrome / myocardial infarction within the previous 6 months. * not willing to accept blood transfusion * Participation in other clinical trial within previous 30 days * Women of childbearing age (without menopause for at least 12 months) * Glaucoma * Pheochromocytoma * Low serum K+ (\< 3.0 mmol/L) * Thyrotoxicosis * Digoxin intoxication * Alcohol og drug abuse (investigators judgement)