Search results
Results From The WOW.Com Content Network
Smaller veins may collapse as a consequence of too much suction being used when pulling back against the syringe's plunger to check that the needle is in the vein. This will pull the sides of the vein together and, especially if inflamed, they may stick together causing the vein to block.
Venous cutdown is an emergency procedure in which the vein is exposed surgically and then a cannula is inserted into the vein under direct vision. It is used for venous access in cases of trauma, and hypovolemic shock when the use of a peripheral venous catheter is either difficult or impossible. The great saphenous vein is most
Needlestick injuries may also occur when needles are exchanged between personnel, loaded into a needle driver, or when sutures are tied off while still connected to the needle. Needlestick injuries are more common during night shifts [ 14 ] and for less experienced people; fatigue, high workload, shift work, high pressure, or high perception of ...
For example, after a GSV stripping, laser ablation or after its ligation at the sapheno-femoral junction, the Giacomini vein will drain into the SSV, with a retrograde flow. When there is a GSV thrombosis or other cause of insufficiency, the Giacomini vein can divert the blood flow to the SSV and from there to the popliteal vein.
An 18G butterfly needle is inserted into the median cubital vein. Cephalic vein is not used because it bypasses the axillary vein. Then, 30 ml of the contrast is injected through the butterfly needle and spot images are taken. Alternatively, digital subtraction angiography can be used at a fram rate of 1 frame per second. [3]
A peripherally inserted central catheter, or PICC line (pronounced "pick"), is a central venous catheter inserted into a vein in the arm (via the basilic or cephalic veins) rather than a vein in the neck or chest. The basilic vein is usually a better target for cannulation than the cephalic vein because it is larger and runs a straighter course ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
The hypodermic needle reduces contamination for two reasons: First, its surface is extremely smooth, which prevents airborne pathogens from becoming trapped between irregularities on the needle's surface, which would subsequently be transferred into the media (e.g. agar) as contaminants; second, the needle's surface is extremely sharp, which ...