Hemodynamics, or haemodynamics, refers to the dynamics of blood flow in the circulatory system
. It explains the physical laws that govern the flow of blood in the blood vessels, which ensures the transportation of nutrients, hormones, metabolic waste products, oxygen, and carbon dioxide throughout the body to maintain cell-level metabolism, regulate pH, osmotic pressure, and temperature of the whole body, and protect from microbial and mechanical harm
. Hemodynamics is important because understanding the factors that affect blood flow can help diagnose and manage conditions that affect the circulatory system
. Hemodynamic instability refers to an unstable blood flow in the body, which is associated with several conditions and situations, such as heart disease, hypertension, and shock
