Initial Management of Cardiogenic Shock

Definition and Diagnostic Criteria

The European Society of Cardiology characterizes cardiogenic shock by hypotension (systolic arterial pressure <90 mmHg for >30 minutes or mean arterial pressure <60 mmHg) despite adequate filling, or requirement of vasopressors to maintain arterial pressure 2, 3
The American College of Cardiology notes that signs of tissue hypoperfusion, such as altered mental status, cold extremities, livedo reticularis, urine output <30 mL/h, and lactate >2 mmol/L, are also characteristic of cardiogenic shock 1, 4
The American Heart Association defines hemodynamic criteria, including cardiac index <2.2 L/min/m² and pulmonary capillary wedge pressure >15 mmHg, as indicative of cardiogenic shock 4, 3

The European Heart Journal recommends immediate evaluation with ECG and echocardiography in all patients with suspected cardiogenic shock, as well as continuous monitoring of ECG and arterial pressure 2
The American College of Cardiology suggests that invasive monitoring with an arterial line should be established in these patients 2, 5

The European Society of Cardiology recommends dobutamine as the first-line inotropic agent to increase cardiac output (2-20 μg/kg/min) in patients with cardiogenic shock 2, 1
The American Heart Association notes that the choice of inotropic agent should be guided by arterial pressure, concurrent arrhythmias, and availability 4

The European Heart Journal recommends immediate coronary angiography (within 2 hours of hospital admission) with intention to revascularize in patients with cardiogenic shock complicating acute coronary syndrome 2, 3
The American College of Cardiology suggests that temporary mechanical circulatory support should be considered when vital organ function cannot be maintained by pharmacological means 1
The American Heart Association recommends management by a multidisciplinary team with experience in shock, and considers transfer to a tertiary care center with 24/7 cardiac catheterization laboratory and mechanical circulatory support availability 1, 6

The European Society of Cardiology advises against delaying echocardiographic and ECG evaluation, which are fundamental for diagnosis and initial management 2, 3
The American Heart Association warns against relying solely on arterial pressure for diagnosis, as tissue hypoperfusion must be present as a consequence of cardiac dysfunction 1, 4
The American College of Cardiology recommends against delaying revascularization in cases of acute myocardial infarction, which is crucial for improving survival 2, 5