Jaideep Singh Bhalla retweetledi

#ACVC 2026: Mixed shock: the reality behind cardiogenic shock
An outstanding session by Dr. David Morrow. Morrow highlighting a critical and often under-recognized concept:
👉 Pure cardiogenic shock is rare. Mixed shock is common.
🔍 Key messages:
SVR is not always elevated in cardiogenic shock
→ Wide variability, often with vasoplegia (SIRS component)
Mixed shock = low CO + inappropriately low SVR
→ A combination of cardiac failure + vasodilatory physiology
📊 Epidemiology (SHARC data):
.Cardiogenic shock (isolated): ~65%
.Mixed shock: ~17%
.Mortality highest in mixed shock (~48%)
🧠 Common phenotypes:
-Cardiogenic shock → secondary vasoplegia
-Cardiac arrest → stunned myocardium + vasodilation
-Sepsis + cardiac dysfunction
-Toxic cardiomyopathy (e.g., Ca-blockers, BBs)
-Post-cardiotomy vasoplegia
⚙️ Pathophysiology:
Inflammation (SIRS) plays a central role
Microcirculatory dysfunction + iNOS activation
Loss of vascular tone despite vasopressors
⚠️ Clinical implication: 👉 Hemodynamics must be interpreted dynamically, not assumed
👉 SVR ≠ always high → avoid “one-size-fits-all” approach
🛠️ Management principles: Phenotype-guided therapy
Combine:
Vasopressors (norepinephrine first-line)
Inotropes when needed
Careful fluid strategy
Consider:
.Methylene blue / hydroxocobalamin in refractory vasoplegia
.CIRCI (steroids) in selected patients
📌 Take-home message: Cardiogenic shock is not purely cardiac.
Recognizing the vasoplegic component is key to survival.
#ACVC26 #CardiogenicShock #MixedShock #CriticalCare #Hemodynamics #ShockManagement




English













