Low Dose of Norepinephrine Within 24-Hour Mortality in Traumatic Patient With Hemorrhagic Shock

Overview

The aim of the work is to evaluate role of low dose of nor epinephrine administration in the early 24-hour period among traumatic patients and hemorrhagic shock. The primary outcome: evaluate mortality at first 24 hour. The secondary outcome : measure total fluid intake, observe renal functions and Hemodynamic changes.

Uncontrolled hemorrhage remains the leading cause of preventable death among patients with trauma, despite considerable improvements in trauma care Trauma- induced hemorrhage and hypovolemia can trigger an increase neurohormonal response and hypotension is not explained by hypovolemia alone but is associated with sympathy inhibitory-induced vasodilation. Trauma was defined as any exposure to nonpenetrating or penetrating kinetic energy, collision, or deceleration, Patients were alive on admission with hemorrhagic shock, defined by prehospital or admission mean arterial blood pressure less than 65 mm Hg. Management of shock after trauma remains a clinical challenge, in particular if associated with active hemorrhage and vasopressors are part of the recommended therapeutic routinely used by clinicians in Europe . Historically, the importance of permissive hypotension and the restriction of crystalloid fluid volume before hemorrhage control has been confirmed with good outcomes in patients with penetrating trauma. Vasopressors mimic the initial response to blood loss; improve venous return, coronary perfusion, and myocardial contractility. Generally, vasopressors are considered to have a negative impact on patient outcome in the management of hemorrhagic Shock, and the predominant strategy is based on permissive hypotension and low volume resuscitation. vasopressor use in hemorrhagic Shock in humans. The use of vasopressors, such as norepinephrine for the hemodynamic management of hemorrhagic shock, may be considered in the early phase of resuscitation and is a common practice among several prehospital and hospital emergency teams in Europe. Where any surgical or interventional radiographic procedures for the immediate control of bleeding and early activation of massive transfusion protocol are always not available, the effects vasopressor administration for severe hemorrhagic shock following trauma is used to restore arterial pressure in hemorrhagic shock. Norepinephrine is a sympathomimetic agent with predominantly vasoconstrictive effects. Norepinephrine exerts both arterial and venous α-adrenergic stimulation.

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