Blood sample collection and positioning
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| the method and needle gauge selected depend on | the vessel size, the amount of blood required, the intended use of the sample and teh technicians preference
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| forceful retraction of the syringe may result in | hemolysis of red blood cells as they pass through the needle
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| wiping the hair and skin with isopropyl alcohol achieves | removal of skin contaminants, causes vasodilatation, improves visualization of the vein.
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| the most important aspects of any venipuncture technique aare | proper restraint of the animal and proper distention and immobilization of the vessel
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| the most frequently used sites for canine blood collection are | cephalic, jugular, and lateral spahenous veins
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| the most frequently used sites for feline collection are | cephalic, jugular, femoral and medial saphenous
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| In sternal positioning venipuncture is usually done | in a cephalad direction
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| in lateral positioning venipuncture is generally done in a | caudal direction
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| cephalic venipuncture | the vein is at the top anterior of the forearm
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| jugular venipuncture | the vein is in the neck
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| lateral saphenous venipuncture | the vein is on the outside of the back leg
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| medial saphenous or femoral venipuncture | the vein is on the inside of the leg mainly used in cats. used to collect small amounts of sample
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| marginal ear venipuncture | the edge of the ear in cats. used for small sample testing ie blood smears, glucose testing. the test strip should be designed to measure a capillary and not venous blood sample
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| arterial blood sample | best used to test blood gases the best way to assess pulmonary function
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| blood gases measure | the partial pressure of carbon dioxide (PaCO2-ventilation) and oxygen (PaO2-oxygenation) in the blood
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| the most common artery used for catheter placement is the | dorsal metatarsal artery
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| advantages for using the dorsal metatarsal artery are | 1. catheter can be taped rather than sutured. 2. risk of hematoma is reduced because of the tight SC tissues and the catheter is easier to maintain and kink less
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Created by:
tnewhouse
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