Hemodynamics
Hemodynamics
Hemodynamics (pronounced: hee-mo-dy-nam-ics) is the study of the physical principles that govern the circulation of blood in the body. It is derived from the Greek words "haima" (blood) and "dynamis" (power).
Etymology
The term "hemodynamics" is derived from the Greek words "haima" meaning "blood" and "dynamis" meaning "power". It was first used in the medical field in the 19th century to describe the physical forces that affect the circulation of blood in the body.
Definition
Hemodynamics refers to the physical and physiological factors that influence the flow of blood in the cardiovascular system. It includes the study of blood pressure, blood flow, and resistance, and how these factors are influenced by cardiac output and vascular resistance.
Related Terms
- Blood Pressure: The force exerted by the blood against the walls of the blood vessels.
- Cardiac Output: The amount of blood the heart pumps through the circulatory system in a minute.
- Vascular Resistance: The resistance that must be overcome to push blood through the circulatory system and create flow.
- Blood Flow: The continuous circulation of blood in the cardiovascular system.
- Cardiovascular System: The organ system that circulates blood throughout the body, consisting of the heart and blood vessels.
Hemodynamics in Medicine
In medicine, understanding hemodynamics is crucial for diagnosing and treating cardiovascular diseases such as hypertension, heart failure, and stroke. It is also important in the management of critically ill patients, where monitoring hemodynamic parameters can guide treatment decisions.
See Also
External links
- Medical encyclopedia article on Hemodynamics
- Wikipedia's article - Hemodynamics
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