kidney
Flow is the amount of blood flowing through an organ, tissue or vessel at a given time. Perfusion is the flow per given volume or mass of tissue. Thus a large organ could have greater flow but less perfusion then a small one such as an ovary because the ovary receives much more blood per gram of tissue.
No, the adjustment of blood flow to each tissue in proportion to its requirements at any point in time is termed tissue autoregulation. Autoregulation refers to the ability of an organ or tissue to regulate its own blood flow independent of systemic factors.
When blood flow is restricted or blocked to an organ, it can lead to tissue damage or organ failure due to lack of oxygen and nutrients. This can result in cell death and potentially life-threatening complications if not addressed promptly. Treatment often involves restoring blood flow through medications, procedures, or surgery.
Lateral ischemia refers to reduced blood flow or oxygen supply to the lateral part of an organ or tissue. This can lead to tissue damage or dysfunction in the lateral area affected by the restricted blood flow.
The decrease in size of an organ or tissue is known as atrophy. This can occur due to disuse, lack of nourishment, reduced blood flow, or hormonal changes. Atrophy can lead to functional impairment of the affected organ or tissue.
The term most often used is infarction for a complete lack of blood flow to a particular organ (most often used when referring to a muscle such as the heart or skeletal muscle), or ischaemia for severely reduced blood flow. If you are simply referring to a reduced amount of oxygen then tissue hypoxia may apply.
If blood supply to an organ is cut off, it can lead to tissue damage and cell death due to lack of oxygen and nutrients. This condition is known as ischemia. If left untreated, it can result in serious consequences such as organ failure or tissue necrosis. Treatment usually involves restoring blood flow to the affected organ as quickly as possible.
The irrigation of an organ refers to the supply of blood to that organ, which is essential for delivering oxygen and nutrients while removing waste products. This process is primarily facilitated by the organ's blood vessels, such as arteries and veins. Proper irrigation is crucial for maintaining the organ's function and health, as inadequate blood flow can lead to tissue damage or organ failure.
Operative procedures that improve blood supply to an organ include vascular bypass surgery, angioplasty, and thrombectomy. These procedures are designed to bypass or clear blockages in the blood vessels supplying the organ to restore adequate blood flow and prevent tissue damage.
Blood flow and tissue perfusion are NOT the same thing. An increase in blood flow does not always mean that there is a parallel increase in tissue perfusion. While blood flow is generally understood as an increase in the total amount of blood flowing into an anatomic structure or region, tissue perfusion is the amount of blood that actually flow through the capillaries of the vascular bed of that structure or region. The important thing to remember is that nutrients and oxygen are delivered to the cells via the capillaries.
The term perfusion is used to indicate the flow of blood by means of vessels of an organ. It is the movement of the blood through the blood streams.
The type of blood flow that is needed for muscle tissue is skeletal muscle blood flow. Skeletal muscle blood flow is important for both voluntary and involuntary muscles.