Mixed Shock Complicating Cardiogenic Shock: Frequency, Predictors, and Clinical Outcomes.

Area of Science:

• Cardiology
• Critical Care Medicine
• Hemodynamics

Background:

• Patients with cardiogenic shock (CS) are susceptible to developing mixed shock (MS), a condition marked by a distributive-inflammatory phenotype.
• Currently, an objective definition for this clinical entity is lacking.

Purpose of the Study:

• To assess the frequency, predictors, and prognostic significance of MS complicating CS.
• To utilize a newly proposed objective definition for MS in CS.

Main Methods:

• A cohort of 200 patients with CS was analyzed.
• MS complicating CS was defined by specific hemodynamic, clinical, and laboratory criteria arising at least 12 hours after initial CS diagnosis.
• Predictors and prognostic relevance were evaluated using statistical analysis.

Main Results:

• Mixed shock (MS) complicating cardiogenic shock (CS) occurred in 24.5% of patients.
• Lower systolic blood pressure, hepatic injury, and suspected infection at CS diagnosis independently predicted MS development.
• MS was associated with significantly higher in-hospital mortality (53.1% vs. 27.8%) and longer hospital stays.

Conclusions:

• An objective definition of MS complicating CS, based on longitudinal changes, identifies the condition in approximately one-fourth of CS patients.
• Predictors include markers of CS severity and inflammation at diagnosis.
• MS portends a worse prognosis, with significantly increased hospital mortality.