active hyperemia的意思|示意

Active hyperemia is a medical condition that involves an increased flow of blood in an area of the body. It is often caused by a stimulus that triggers increased activity of an organ or body part, resulting in increased arterial blood flow. This increased activity can come from physical exercise, mental exertion, trauma, or fluctuations in hormones.

Active hyperemia can affect any region of the body, from the head to the limbs. It is most often seen in the heart and lungs, as these are organs that are particularly sensitive to increased activity. When this increased activity and arterial blood flow is experienced in the heart, it is known as an active coronary hyperemia. This is seen when the arteries that supply the heart with blood become more active, and more oxygen and nutrients are delivered to the heart muscles.

In the lungs, active hyperemia is seen when the airways become more active and carry more oxygen in the blood. This is usually in response to higher levels of physical activity or changes in oxygen levels due to external factors, such as altitude or extreme weather.

Active hyperemia can also occur in the skeletal muscles of the body. This is known as metabolically active hyperemia and is seen when the muscles become more active and need more energy. This type of active hyperemia is seen during intense physical activities, such as sprinting or weight lifting.

Active hyperemia is not always a sign of a serious medical condition, but it can be a sign of an underlying health problem. People experiencing active hyperemia should contact their doctor to get an accurate diagnosis and treatment plan.