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Pathophysiology and Advanced Hemodynamic Assessment of Cardiogenic Shock
Michael I Brener1, Hannah R Rosenblum1, Daniel Burkhoff1,2
1COLUMBIA UNIVERSITY MEDICAL CENTER, NEW YORK, NEW YORK.
Insights
Cardiogenic shock (CGS) is a severe condition with high mortality. This review clarifies CGS pathophysiology, risk assessment, and foundational mechanics for better clinical understanding and management.
Area of Science:
- Cardiology
- Critical Care Medicine
Background:
- Cardiogenic shock (CGS) affects over 100,000 individuals annually in the US, with a 30-day mortality rate nearing 50%.
- Despite advancements in critical care and mechanical therapies, CGS remains a significant clinical challenge.
Purpose of the Study:
- To deepen clinicians' understanding of cardiogenic shock (CGS).
- To focus on the pathophysiology, definition, etiologies, and risk assessment of CGS.
- To introduce the pressure-volume loop framework for analyzing ventricular mechanics and interactions in CGS.
Main Methods:
- Review of existing literature on cardiogenic shock.
- Examination of the pressure-volume loop framework to understand ventricular function.
- Contextualization of CGS within specific clinical scenarios and treatment modalities.
Main Results:
- The review details the definition, causes, and risk factors for CGS.
- It explains the pressure-volume loop as a tool for understanding CGS pathophysiology.
- Subsequent discussions will cover CGS in specific contexts and its treatments.
Conclusions:
- A comprehensive understanding of CGS pathophysiology is crucial for effective clinical management.
- The pressure-volume loop framework provides essential insights into the mechanics of CGS.
- This review serves as a foundation for understanding advanced CGS management strategies.
Abstract:
Cardiogenic shock (CGS) is common and highly morbid. According to the National Inpatient Sample, there are more than 100,000 cases per year, and 30-day mortality approaches 50% despite improvements in critical care practices and novel mechanical therapies targeted at restoring normal hemodynamics. This issue aims to enhance clinicians' understanding of CGS, and this review specifically focuses on the underlying pathophysiology. We examine the definition and etiologies of CGS, approaches to risk assessment, and the pressure-volume loop framework that is the foundation for conceptualizing ventricular mechanics, ventricular-vascular interactions, and the derangements observed in CGS. This overview will also contextualize subsequent chapters that discuss nuances of CGS encountered in particular scenarios (ie, post-myocardial infraction, acutely decompensated chronic heart failure, post-cardiac surgery), address pharmacological and mechanical treatments for CGS, and review CGS in a case-based format.
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