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1、二、犬的靜脈注射經(jīng)口投藥排除空氣前肢靜脈處剪毛（前臂皮下靜脈）扎止血帶進(jìn)針回血固定拔針后肢靜脈扎止血帶固定The first step in catheter placement is proper preparation of the leg. After the hair is clipped it is cleansed with the same disinfectant that is used to prepare pets for surgery. If the leg is not prepped properly an infection can be introduced

2、into the venous system.This is the cephalic vein coursing from the foot on the right to the elbow on the left (the arrows mark the vein and direction of blood flow). It is bulging (this one is bulging much more than usual, which is why we picked it for this picture) because one of our assistants is

3、gently occluding the flow of blood by holding the vein at the elbow.special Teflon coated catheter is precisely inserted into the vein and threaded all the way in. We use different sized catheters depending on the size of the vein, this one is an 18 gauge. As you can imagine, this takes significant skill (not all veins are this large) After we are sure of proper placement we carefully wrap the catheter to the leg with several layers of tape. Most pets leave the catheter alone, but due to the fact that there are a limited number of veins to use, we commonly place a coll

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