Assessment of Tissue Perfusion Pressure in Patients With Septic Shock: Beyond Mean Arterial Pressure

The relationship between arterial pressure and outcomes in septic shock is complex and heterogeneous. Focusing on critical parameters-such as TPP, the vascular waterfall, and individual treatment effects-enables a more personalized approach, focused on perfusion rather than pressure alone. Persistent hypoperfusion despite adequate macrocirculatory targets marks a pivotal moment when microcirculatory assessment becomes essential to guide therapy and avoid potentially harmful escalation of fluids or vasopressors. Bedside measurements of systolic arterial pressure, MAP, diastolic arterial pressure, Pcc, and Pmsf offer practical tools for monitoring and tailoring treatment. Future clinical trials are needed to validate these metrics and refine resuscitation strategies in septic shock.