STROKE VOLUMES Meaning and
Definition
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Stroke volumes (SV) refers to the amount of blood pumped by the heart with each contraction, also known as a heartbeat. It is a fundamental measure of cardiac function and is indicative of the efficiency and effectiveness of the heart in delivering oxygenated blood to the body's various organs and tissues.
The stroke volume is calculated by subtracting the end-systolic volume (the volume of blood left in the ventricles after contraction) from the end-diastolic volume (the volume of blood in the ventricles just before contraction). It is typically expressed in milliliters (ml) per beat.
Several factors influence stroke volume, including cardiac contractility (the strength of the heart muscle's contractions), preload (the amount of blood returning to the heart during diastole), and afterload (the resistance the heart must overcome to eject blood into the arterial system). An increase in contractility, greater preload, or decreased afterload will generally result in a larger stroke volume.
Stroke volume is directly related to cardiac output, which is the total volume of blood pumped by the heart per unit of time (typically expressed in liters per minute). Cardiac output is calculated by multiplying stroke volume by heart rate. By measuring and analyzing stroke volume, healthcare professionals can gain insights into a patient's cardiovascular health and diagnose conditions such as heart failure, valvular disorders, or myocardial infarction.
In conclusion, stroke volume represents the quantity of blood ejected by the heart in a single heartbeat and is a crucial parameter for understanding cardiac function and assessing cardiovascular health.
Common Misspellings for STROKE VOLUMES
- atroke volumes
- ztroke volumes
- xtroke volumes
- dtroke volumes
- etroke volumes
- wtroke volumes
- srroke volumes
- sfroke volumes
- sgroke volumes
- syroke volumes
- s6roke volumes
- s5roke volumes
- steoke volumes
- stdoke volumes
- stfoke volumes
- sttoke volumes
- st5oke volumes
- st4oke volumes
- strike volumes
- strkke volumes
Etymology of STROKE VOLUMES
The word "stroke volumes" is a medical term used to describe the volume of blood pumped out of the left ventricle of the heart with each contraction, also known as a stroke. The word "stroke" in this context comes from the Middle English word "strook" or "strūk", which means a single action or movement. It originates from the Old English word "strācian", meaning "to go, pass, journey". The term "volume" comes from the Latin word "volumen" which means "a roll" or "a scroll". In the medical context, "stroke volumes" refers to the measurement of blood flow, and the term is derived from the combination of these two words.
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