details: when a person bleeds profusely or is suffering from blood cancer, he may require blood from outside. this process of transfer of blood from a healthy person to a sick person is called blood transfusion.
2007-12-13 22:27:15 · 3 answers · asked by sgdfdeft 1 in Health ➔ Diseases & Conditions ➔ Heart Diseases
pressure
the blood transfusion needle is rather big- some 2 mm across. when you puncture an artery it will cause serious bleeding- so better puncture a vain where the pressure is lower and the bleeding is easier to contain
sure, arteries can be punctured too (eg in heart valve surgery or removal of coronary embolisms)- since that is the best way of getting access. but there is no point in taking more risks that necessary
2007-12-13 22:34:28 · answer #1 · answered by cp_scipiom 7 · 0⤊ 0⤋
When running an IV you want to run at least an 18 guage needle. If you puncture an artery this is going to cause damage to tissue and the artery plus arteries are under tremedous pressure. A vein however is not, you will never see blood spurt from a vein. Veins are much closer to the surface than arteries too.
Hope this helps
2007-12-13 22:39:04 · answer #2 · answered by Capt_John_97 3 · 0⤊ 0⤋
Additionally, arteries tend to be deeper inside the body and harder to get to.
2007-12-13 22:39:06 · answer #3 · answered by Thatgrumpyguy 3 · 0⤊ 0⤋