Noradrenaline Sintetica (Noradrenaline Tartrate)

Noradrenaline is a sympathomimetic agent used in acute cardiovascular emergencies to restore vascular tone and support cardiac function.

• Hypotension: Increases systemic vascular resistance to raise blood pressure in patients with severe low blood pressure.
• Septic shock: Improves hemodynamic stability by counteracting vasodilatory shock in sepsis.
• Cardiac arrest: Provides vasoconstrictive support during resuscitation to enhance coronary and cerebral perfusion.

• Noradrenaline acts as a direct agonist at alpha‑1 and beta‑1 adrenergic receptors. Stimulation of alpha‑1 receptors on vascular smooth muscle produces vasoconstriction, increasing systemic vascular resistance and arterial pressure. Concurrent beta‑1 activation enhances myocardial contractility and heart rate, raising cardiac output. The combined effect rapidly restores hemodynamic parameters in states of profound hypotension.

Noradrenaline may be associated with a range of adverse reactions, varying from common transient effects to serious or rare events.

Common Side Effects

• Headache: mild to moderate headache occurring during infusion.
• Tachycardia: increased heart rate due to beta‑1 stimulation.
• Palpitations: sensation of rapid or irregular heartbeat.
• Nausea: occasional nausea or vomiting.
• Peripheral ischemia: reduced blood flow to extremities causing coldness or pain.

Serious or Rare Side Effects

• Arrhythmias: potentially life‑threatening cardiac rhythm disturbances.
• Myocardial ischemia: reduced coronary blood flow leading to chest pain.
• Severe hypertension: abrupt, excessive rise in blood pressure.
• Tissue necrosis: extravasation at the injection site causing local tissue damage.
• Pulmonary edema: fluid accumulation in the lungs.

When using Noradrenaline, clinicians should observe specific precautions to minimize risks and ensure optimal therapeutic outcomes.

• Dose titration: Adjust infusion rate based on continuous blood pressure monitoring.
• Cardiac monitoring: Observe heart rhythm and rate for arrhythmias.
• Peripheral perfusion: Monitor extremities for signs of ischemia or extravasation.
• Fluid balance: Maintain adequate intravascular volume to support vasoconstriction.
• Concomitant vasopressors: Use with caution when other vasopressors are administered.
• Store at 2-8°C: Keep refrigerated, protect from light, do not freeze or shake.

Noradrenaline can interact with other agents, influencing its efficacy or safety profile.

Major Interactions (Avoid)

• Beta‑blockers: May blunt beta‑1 mediated cardiac effects, reducing efficacy.
• MAO inhibitors: Can potentiate hypertensive responses.
• Tricyclic antidepressants: Increase risk of severe hypertension.

Moderate Interactions (Monitor Closely)

• Calcium channel blockers: May enhance vasodilatory effects, requiring dose adjustment.
• Diuretics: Potential for excessive hypotension if volume depleted.
• Inhaled anesthetics: May alter vascular response, necessitating careful monitoring.