hydrocortisone + norepinephrine

Hydrocortisone + norepinephrine is a combination therapy used primarily in the management of septic shock and other forms of vasodilatory shock. Hydrocortisone is a synthetic glucocorticoid that exerts anti-inflammatory and immunosuppressive effects by binding to the glucocorticoid receptor, inhibiting phospholipase A2, NF-kappa B, and other inflammatory transcription factors, while promoting anti-inflammatory gene expression. Norepinephrine (noradrenaline) is an endogenous catecholamine that acts as a potent vasopressor by stimulating alpha-1 and alpha-2 adrenergic receptors to induce vasoconstriction, thereby increasing systemic vascular resistance and blood pressure[4][6]. The combination has been shown to improve hemodynamic stability in patients with septic shock who require escalating doses of norepinephrine; addition of hydrocortisone can reduce 28-day mortality, improve resolution of shock, increase hemodynamic responsiveness, decrease recurrence of shock within 72 hours, shorten ICU/hospital stay, and increase ventilator-free days[1][2][3][7]. Mechanistically, hydrocortisone may also potentiate the vascular response to catecholamines like norepinephrine by inhibiting catechol-O-methyl transferase (COMT), reducing breakdown of these agents[8].