in complicated forms of various diseases for a more accurate diagnosis and identify the causes of their appearance may require blood from a vein in an amount of up to 10 ml.From how much quality will be carried out blood sampling procedure depends research results.
If capillary blood can take the laboratory, the blood sample from a vein should be performed by a qualified nurse in sterile therapy room, with the use of special tools.
It is important that the patient is prepared for the donation of blood, as there are a number of factors that could adversely affect the outcome of the study.Avoid physical stress before the procedure (brisk walking, running, climbing stairs), to fast before the test, do not smoke or drink alcohol, to maintain emotional calm.
Before taking blood from a vein, nurses must provide patients tested, 15-minute break.During the actual procedure, the patient must sit and seriously ill may lie.If the patient eat, smoke or drink alcoholic beverages, the specimen collection may be
most convenient to take the blood out of the veins of the forearm, as here, they are located on the surface and are clearly visible.There can be used the following vein: the outer surface, ulnar, median surface, radial, median Vienna elbow, the inner surface.
Vienna differently fixed in the tissue, so it is best to take blood from vessels less mobile, since they are more convenient for the puncturing needle.These blood vessels are median Vienna and elbow outer surface.
In the absence of a full experience of taking blood should not be performed from the inner surface veins, as it is located next to the worms and the artery.Inaccurate an injection may harm the patient.
If not enough elbow veins visible (for example, in obese people), it is possible to carry out sampling of blood from the veins back surface of the hands and the popliteal cavity.
Infants blood taken from a vein located in temples.When a baby's cry, they swell significantly, allowing more secure to make the puncture needle.Also, blood from a vein may be taken from the baby's heel.
should be avoided to make the fence at the location of scars, bruises, from the veins used for transfusion medical solutions.In patients with diabetes, in violation of the peripheral circulation, angiopathy, should not take blood from a leg vein.
procedure performed in disposable rubber gloves.Otherwise, the gloves should be pretreated with rubbing alcohol.
blood collection from a vein, the following tools and accessories: Vakutainers (disposable plastic blood collection system), disposable syringes and needles with a diameter of 0.55-0.65 mm in cross-section, elastic cord, tube, sterile rubber gloves, balls of woolsoaked in alcohol.
Taking blood from a vein in the following manner:
the middle third of the shoulder harness is applied to stop the blood flow.
place elbow treated sequentially with two balls of cotton, pre-moistened with alcohol.The patient at this time clenching and unclenching his fist.
is sought fullest Vienna and fixed by tightening the skin.The patient has to squeeze his hand into a fist.
Firmly holding the tip of the needle up and cut parallel to the skin should be carefully puncture the vein and along the vessel, insert the needle on the third length.
To substitute needle cannula tube and let the blood in the right quantity.
Remove wiring.The patient should unclench his fist.
needle is removed, and the puncture site is covered with a cotton ball prospirtovannym.
patient should bend at the elbow arm for clamping the vein to stop bleeding.
To test tube in which the blood from a vein, you must attach a direction.