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The peripheral vascular system is the part of the circulatory system that consists of the veins and arteries not in the chest or abdomen (i.e. in the arms, hands, legs and feet). [1] [2] The peripheral arteries supply oxygenated blood to the body, and the peripheral veins lead deoxygenated blood from the capillaries in the extremities back to ...
In the modified Allen test, one hand is examined at a time: [2] The patient is asked to clench their fist for about 30 seconds. Pressure is applied over the ulnar and the radial arteries so as to occlude both of them. Still elevated, the hand is then opened. It should appear blanched (pallor may be observed at the finger nails).
The brachial artery is the major blood vessel of the (upper) arm. It is the continuation of the axillary artery beyond the lower margin of teres major muscle. It continues down the ventral surface of the arm until it reaches the cubital fossa at the elbow. It then divides into the radial and ulnar arteries which run down the forearm.
Forearm: Anterior ulnar recurrent artery, Posterior ulnar recurrent artery, Common interosseous is very short, around 1 cm, and gives rise to the anterior, posterior, and recurrent interosseous arteries and close to the wrist it gives off the palmar carpal branch which is the ulnar contribution to the palmar carpal arch and it also gives a dorsal carpal branch which is the ulnar contribution ...
The radial artery is a common site for the insertion of an arterial line, such as for blood pressure monitoring in an intensive care unit. It is also commonly used for cerebral angiograms for the treatment of cerebral pathologies, such as strokes, [ 7 ] cerebral aneurysms [ 8 ] It is selected because it is accessible, and because of the low ...
To prevent hand ischemia, there is a "squirt test" that involves squirting blood from the radial artery, which is used in intraoperative assessment of collateral arm blood flow before radial artery harvest. [3] This is more commonly called "Allen's test" by microvascular surgeons, and is used before harvesting radial artery based free tissue ...
Blood sampling can be carried out at the time of insertion of a peripheral venous catheter or at a later time. [ 3 ] Peripheral venous catheters may also be used in the emergency treatment of a tension pneumothorax- they can be placed in the second intercostal space along the mid clavicular line in order to relieve tension before definitive ...
Three main changes are seen in the mechanism of Raynaud's phenomenon which are reduced blood flow, blood vessel constriction, and neurogenic, inflammatory, and immune responses. It is induced by mental stress and a cold atmosphere. In all cases, the primary cause is an underlying hyperactivation of the sympathetic nervous system. Although, with ...
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