Cardiogenic shock classification
|
Cardiogenic Shock Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Cardiogenic shock classification On the Web |
|
American Roentgen Ray Society Images of Cardiogenic shock classification |
|
Risk calculators and risk factors for Cardiogenic shock classification |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: João André Alves Silva, M.D. [2]
Overview
Classification
In cardiogenic shock, the root abnormality is the inability of the heart to pump out enough blood to maintain normal organ perfusion and blood pressure. However, this failure may be due to different factors, which allow us to classify cardiogenic shock into two categories:[1][2]
- Intrinsic - this includes the conditions affecting the heart or the structures that allow it to function properly. In this category, the affected structures may be: the myocardial muscle, responsible to pump out the blood; the heart valves allowing the blood in and out of the heart chambers; the conduction system, responsible for the transmission of the electrical signals that allow the myocardium to contract in a coordinated fashion or, a combination of the previous. Examples of such factors are: myocardial infarction, mitral regurgitation and electrolyte imbalances.
- Compressive - this includes the conditions in which an "healthy heart" is prevented from working properly and pumping the blood through the vascular system by a mechanism not related to it. The degree of impact that an extrinsic factor must have on the heart will depend on the condition of this last one. An "healthy heart" might take a more aggressive outside influence without compromising its function, while a heart already weakened by another disease, such as atherosclerosis, might fail more promptly. An example of such factor is cardiac tamponade.
Often times both factors are affecting the heart's ability to perform its function, at which times it might be hard to identify clearly the underlying mechanism of the cardiogenic shock.[3]
References
- ↑ Longo, Dan L. (Dan Louis) (2012). Harrison's principles of internal medici. New York: McGraw-Hill. ISBN 978-0-07-174889-6.
- ↑ Myers, Jeffrey (2002). Principles of pathophysiology and emergency medical care. Albany: Delmar/Thomson Learning. ISBN 978-0766825482.
- ↑ Myers, Jeffrey (2002). Principles of pathophysiology and emergency medical care. Albany: Delmar/Thomson Learning. ISBN 978-0766825482.