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Arterial lines are most commonly used in intensive care medicine and anesthesia to monitor blood pressure directly and in real-time (rather than by intermittent and indirect measurement) and to obtain samples for arterial blood gas analysis. Arterial lines are generally not used to administer medication, since many injectable drugs may lead to ...
Catheter access, sometimes called a CVC (central venous catheter), consists of a plastic catheter with two lumens (or occasionally two separate catheters) which is inserted into a large vein (usually the vena cava, via the internal jugular vein or the femoral vein) to allow large flows of blood to be withdrawn from one lumen, to enter the dialysis circuit, and to be returned via the other lumen.
Angioscopy is a medical technique for visualizing the interior of blood vessels. In this technique, a flexible fibre bundle endoscope catheter is inserted directly into an artery. [ 1 ] It can be helpful in diagnosing (e.g., arterial embolism ). [ 2 ]
Arterial blood pressure is most accurately measured invasively through an arterial line. Invasive arterial pressure measurement with intravascular cannulae involves direct measurement of arterial pressure by placing a cannula needle in an artery (usually radial, femoral, dorsalis pedis or brachial). The cannula is inserted either via palpation ...
Prior to the description of the Seldinger technique, sharp trocars were used to create lumens through which devices could be passed. This had a high rate of complications. [4] However, with the introduction of the Seldinger technique, angiography became a relatively risk-free procedure, and the field of interventional radiology blossomed.
An elastic tourniquet used to temporarily restrict blood flow. The tourniquet distends the veins, making them more palpable and visible.. There are many ways in which blood can be drawn from a vein, and the method used depends on the person's age, the equipment available, and the type of tests required.
Depending on the type of angiogram, access to the blood vessels is gained most commonly through the femoral artery, to look at the left side of the heart and at the arterial system; or the jugular or femoral vein, to look at the right side of the heart and at the venous system.
Vascular surgery is a surgical subspecialty in which vascular diseases involving the arteries, veins, or lymphatic vessels, are managed by medical therapy, minimally-invasive catheter procedures and surgical reconstruction.