Related Experiment Videos
[Septic circulatory shock and septic cardiomyopathy]
1Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale) der Martin-Luther-Universität Halle-Wittenberg, Ernst-Grube-Strasse 40, 06120, Halle (Saale), Deutschland. karl.werdan@medizin-uni-halle.de
Insights
Septic shock involves both circulatory and cardiac dysfunction, termed septic cardiomyopathy. This condition, characterized by impaired heart function and circulation, correlates with poor prognosis and requires symptomatic treatment.
Area of Science:
- Cardiology
- Intensive Care Medicine
- Pathophysiology
Context:
- Septic shock presents complex cardiovascular challenges beyond mere circulatory collapse.
- Septic cardiomyopathy, a distinct cardiac impairment, is a key feature of septic shock.
- Understanding the multifaceted nature of septic shock is crucial for effective patient management.
Purpose:
- To elucidate the pathophysiology of septic shock, emphasizing its dual role as circulatory and cardiac shock.
- To define and quantify septic cardiomyopathy and its relationship to circulatory shock parameters.
- To explore the etiological factors contributing to septic cardiomyopathy and impaired cardiac regulation.
Summary:
- Septic shock encompasses circulatory and cardiac dysfunction (septic cardiomyopathy), marked by heterogeneous cardiac function reduction and impaired demand-oriented regulation.
- Bacterial toxins, inflammatory mediators, disseminated intravascular coagulopathy, and endotoxin-I(f) current interactions contribute to these cardiac disturbances.
- Quantification involves measuring systemic vascular resistance for circulatory shock and relative cardiac output to afterload for septic cardiomyopathy.
Impact:
- Severity of both circulatory and cardiac impairment in septic shock correlates with patient prognosis.
- Current treatments for septic shock and cardiomyopathy are primarily symptomatic.
- Further research into causal therapies for septic shock and septic cardiomyopathy is ongoing.
Abstract:
Septic shock is not only a circulatory shock but is also a cardiac shock, the consequence of a potentially reversible heart impairment known as septic cardiomyopathy. Disturbances of macrocirculation as well as microcirculation, an individually heterogeneous reduction of cardiac function, and an extensive impairment of demand-oriented regulation of heart function characterize the septic shock state. Bacterial toxins, inflammatory mediators, and a disseminated intravasal coagulopathy are responsible for these disturbances; for the impairment of cardiac regulation, the interaction of endotoxin with the cardiac pacemaker current I(f) also plays a role. Circulatory shock as well as septic cardiomyopathy should be quantified: The lowering of systemic vascular resistance characterizes the extent of circulatory shock, and the reduction of relative cardiac output in relation to afterload characterizes the extent of septic cardiomyopathy. The intensity of circulatory as well as of cardiac impairment correlates with an unfavorable prognosis. Treatment of septic circulatory shock and of septic cardiomyopathy is predominantly symptomatic; first causal approaches are under investigation.
Related Concept Videos
01:24Blood Pressure Imbalances and Circulatory Shock
Blood Pressure: Hypertension and Hypotension
Normal blood pressure is 120/80 mm Hg. Elevated blood pressure is 120-129/under 80 mm Hg. Hypertension, warranting treatment at 130/80 mm Hg, is often asymptomatic and can lead to severe cardiovascular events, aneurysms, peripheral arterial disease, chronic renal disease, or cardiac...
01:25Cardiomyopathy I: Introduction and Classification
01:23Rheumatic Heart Disease I: Introduction
01:30Cardiomyopathy II: Dilated Cardiomyopathy
01:21Myocarditis I: Introduction
01:26Imbalances in Cardiac Output
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...