STROKE VOLUME Meaning and
Definition
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Stroke volume is a term commonly used in cardiovascular physiology and refers to the amount of blood pumped by the left ventricle of the heart in a single contraction or heartbeat. It is commonly expressed in milliliters (ml) and is a crucial parameter for assessing the overall functioning of the heart.
Stroke volume is influenced by several factors, primarily preload, afterload, and contractility. Preload refers to the amount of blood delivered to the heart during diastole, which stretches the ventricular walls, allowing them to contract more forcefully. Afterload, on the other hand, represents the resistance the heart must overcome to eject blood out into the circulatory system. Contractility refers to the inherent forcefulness of the heart's contractions.
An increase in preload or contractility usually leads to an increase in stroke volume, allowing more blood to be pumped out with each contraction. Conversely, an increased afterload can lead to reduced stroke volume as the heart faces greater resistance to pump blood effectively.
Measuring stroke volume is crucial in diagnosing and monitoring various cardiovascular conditions. It helps assess the heart's efficiency and its ability to meet the body's demands for oxygenated blood. Stroke volume can be measured using various imaging techniques such as echocardiography or through invasive procedures like a cardiac catheterization.
Overall, stroke volume serves as an essential indicator of heart function and plays a significant role in evaluating cardiac performance and overall cardiovascular health.
Common Misspellings for STROKE VOLUME
- atroke volume
- ztroke volume
- xtroke volume
- dtroke volume
- etroke volume
- wtroke volume
- srroke volume
- sfroke volume
- sgroke volume
- syroke volume
- s6roke volume
- s5roke volume
- steoke volume
- stdoke volume
- stfoke volume
- sttoke volume
- st5oke volume
- st4oke volume
- strike volume
- strkke volume
Etymology of STROKE VOLUME
The term "stroke volume" has its etymology stemming from Latin and English.
- The word "stroke" originated from the Old English word "strac" which means "a single movement or a blow". It can be traced back to the Old High German word "strac" and the Proto-Germanic word "strakjan", both of which imply "to hit" or "to strike".
- The word "volume" has Latin roots. It comes from the Latin word "volumen" meaning "a roll" or "something that is rolled up". It is derived from the verb "volvere" meaning "to roll" or "to turn around".
When combined, "stroke volume" refers to the amount of blood pumped out of the left ventricle of the heart with each cardiac contraction or stroke.
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