1. A pharmaceutical composition for preventing perioperative hypotension in humans, including norepinephrine, for intravenous vvedeniya.2. A pharmaceutical composition according to claim 1, characterized in that it contains from 0.1 to 100 ug / ml noradrenalina.3. A pharmaceutical composition according to claim 2, characterized in that it contains from 0.5 to 50 ug / ml noradrenalina.4. A pharmaceutical composition according to claim 3, characterized in that it comprises from 1 to 10 micrograms / ml noradrenalina.5. A pharmaceutical composition according to any one p.p.1-4 for continuous administration to humans from 0.005 / min to 0.5 g / kg / min noradrenalina.6. A pharmaceutical composition according to claim 5 for continuous administration to a human of from 0.01 to 0.1 g / kg / min noradrenalina.7. The pharmaceutical composition of claim 6 for continuously administering to a human of from 0.02 to 0.08 g / kg / min noradrenalina.8. A pharmaceutical composition according to claim 1, wherein the composition is administered to the patient for 1-5 minutes before induction of anesthesia and for as long as the patient is out of narkoza.9. A pharmaceutical product, comprising: - a pharmaceutical composition according to any p.p.1-7 u pharmaceutical composition comprising from 0.001 to 0.01 mg / ml of atropine and / or pharmaceutical composition comprising from 1 to 10 mg / ml of ephedrine in as a combined product for simultaneous or separate administration or administration spread over time, to prevent perioperative hypotension in cheloveka.10. A pharmaceutical product according to claim 9, comprising the pharmaceutical composition according to any one p.p.1-7 and a pharmaceutical composition containing from 0.001 to 0.01 mg / ml atropina.11. A pharmaceutical product according to claim 10 for continuous administration of a composition according to any one p.p.1-7 for 1-5 minutes before induction1. Фармацевтическая композиция для предотвращения периоперационной гипотенз