Early Norepinephrine in Trauma Patients With Hemorrhagic Shock

The goal of this clinical trial is to learn if norepinephrine works to treat trauma patients with hemorrhagic shock. It will also learn about the safety of norepinephrine. The main questions it aims to answer are: Does norepinephrine affect the short-term mortality (24-hour mortality)? Does norepinephrine affect the long-term mortality (30-day mortality), survival with favorable outcome, total volume of blood product and crystalloid given in 24 hours, estimated blood loss within 24 hours, resuscitation-related complications, and length of ICU and hospital stay? What medical problems do participants have when receiving norepinephrine? Researchers will compare norepinephrine to a placebo (a look-alike substance that contains no drug) to see if norepinephrine works to treat trauma patients with hemorrhagic shock. Participants will: Receive norepinephrine or a placebo intravenously within 1 hour after randomization, infused for 24 hours after randomization, and then discontinued. Patients are monitored for outcomes and adverse events.