Hyperaemia is a medical term that refers to an increase in blood flow to a specific organ, tissue, or area of the body. It is characterized by dilation and engorgement of the blood vessels, resulting in a reddish or deep pink appearance of the affected area.
This condition occurs due to various factors such as inflammation, injury, infection, or increased metabolic demands of the tissues. When a tissue becomes damaged or inflamed, the body's natural response is to increase blood flow to the affected area. This allows for additional nutrients and oxygen to be delivered to the tissues, aiding in their healing process.
Hyperaemia can be either active or passive. Active hyperaemia is a physiological response that occurs when there is an increase in metabolic demands of tissues due to physical activity or exercise. This type of hyperaemia is typically temporary and subsides once the activity concludes.
Passive hyperaemia, on the other hand, is a pathological condition that occurs when there is impaired venous return or obstruction of blood flow. This can be caused by factors such as blood clots, heart failure, or compression of blood vessels. Unlike active hyperaemia, passive hyperaemia can lead to long-term complications and requires medical intervention to address the underlying cause.
In summary, hyperaemia is an increase in blood flow to a specific area or organ of the body, often as a result of inflammation, injury, infection, or increased metabolic demands. It is a natural response of the body to provide necessary nutrients and oxygen to the affected tissues for their healing and function.
