Cardiogenic shock in ACS. Part 1: prediction, presentation and medical therapy

Area of Science:

• Cardiology
• Critical Care Medicine
• Pathophysiology

Background:

• Ischemic cardiogenic shock is a life-threatening condition with high mortality, often driven by complex pathological processes.
• Patients developing shock frequently have multi-vessel coronary artery disease and impaired left ventricular function.
• Early coronary anatomy definition is vital for guiding treatment strategies and improving survival outcomes.

Purpose of the Study:

• To outline the pathophysiology of ischemic cardiogenic shock.
• To emphasize the importance of early diagnosis and intervention.
• To discuss current treatment approaches and their limitations.

Main Methods:

• Review of the pathophysiology of ischemic cardiogenic shock.
• Analysis of factors contributing to shock development and progression.
• Discussion of therapeutic strategies, including reperfusion, inotropes, vasopressors, and mechanical support.

Main Results:

• Early reperfusion may limit infarct size but can be hindered by ischemia-reperfusion injury.
• Shock progression is influenced by ischemic myocardium volume, stroke volume, and peripheral vascular resistance.
• Effective management requires early recognition and targeted treatment to restore mean arterial pressure and prevent end-organ dysfunction.

Conclusions:

• Survival in ischemic cardiogenic shock hinges on prompt identification and aggressive, targeted therapy.
• While inotropes and vasopressors raise blood pressure, they can increase myocardial oxygen demand.
• Mechanical circulatory support is a critical option for patients with refractory shock (MAP <55 mmHg, lactate >11 mmol/l).