Video tutorial
Left hand tense the skin at the lower end of the puncture site, right hand holding the wing of the scalpel needle, the needle beveled face up, into the needle (20 ° with the skin). Here to tell you the skills of choosing blood vessels:
1, the elderly: hand, foot dorsal intravenous infusion method. Elderly and frail and suffer from a variety of chronic diseases patients with hand and foot veins are more small superficial, less subcutaneous fat, poor elasticity, lack of vascular tissue to support the greater mobility, puncture difficulties. Therefore, before puncture to carefully understand the characteristics of blood vessels or physiological abnormalities, must pay attention to, to make it fully exposed, see the walk feel the depth and thickness. According to the peripheral nerves of the hands and feet are more sensitive to pain stimulation, the needle should be fast, stable, accurate and rather shallow than deep method of gradual entry, to avoid pain caused by vasoconstriction and reduce the success rate of puncture. Before inserting the needle than the length of the needle body and blood vessels to determine the length of the needle; puncture patients do not need to clench their fists, using the natural relaxation method, the natural relaxation method is significantly better than the method of clenched fists, with the advantages of fast injection, fast return of blood, high rate of blood in one shot, and significantly reduce the pain of the needle. Intravenous infusion should be their left hand holding the patient's hand or foot, with the thumb taut skin to fix the lower end of the blood vessels in order to reduce blood vessel sliding, such as the site of the difficult to puncture the success of the person, you can choose the hand and foot dorsal 1/2 to the finger of the blood vessels at the retrograde puncture.
2, pediatric scalp - venous retrograde infusion method. Usually pediatric scalp venous infusion of retrograde venous puncture to the cardiac end, but long-term infusion of children due to vascular damage, a short period of time can not be restored, such as the puncture of the blood vessel infusion, due to the increase in the local blood volume, intravascular pressure increases, the liquid can be infiltrated through the original eye of the needle to the tissue interstitial space resulting in localized swelling, and some drugs such as seepage to the subcutaneous tissue necrosis can result in undue pain to the child. Because the pediatric scalp veins are reticular shunts and no venous valves, retrograde infusion will not slow down.