1. Massage the skin for 2 minutes before operation to make the skin red and
accelerate blood circulation at the injection site. Promote capillary dilation,
promote drug absorption, reduce local drug concentration as soon as possible,
reduce the incidence of subcutaneous bleeding. At the same time can increase the
comfort of patients, reduce the patients nervous psychology!
2. Site selection: for subcutaneous injection of LMWH, the abdomen, the
lower margin of deltoid muscle of the upper arm and the abdomen can be selected
as the preferred site.
Abdominal hypodermic injection of low molecular heparin sodium to take the
supine kneeling position: because the patient is rich in subcutaneous tissue,
the injection range is relatively large, supine kneeling position easy to make
abdominal wall muscle relax, make the formation of wrinkles, capillary
relaxation and bending, not easy to damage, reduce the occurrence of
Methods: select periumbilical U shape, area, under the navel 5 CMP. About
10 cm (except the umbilical week 1 cm), each time interval injection in turn
according to the order twice injection point distance above 2 cm, left, to avoid
injury, induration and scar left thumb and forefinger knead dead skin forms
folds, and maintain and finished injection and relax skin, right hand holding
syringe clingy vertical needle into the skin, fat injection depth, according to
the patients in general for the length of the needle 1/2 ~ 2/3, sure no slow
injection after 30 s.
Injection at the lower edge of deltoid muscle of the upper arm: the patient
was placed in a comfortable position, and the needle inclined to the surface of
the skin was punctured 30° ~ 40 ° rapidly, with a depth of 1/2~2/3. The
injection was slowly pushed after no blood was returned.
3, generally do not exhaust gas before injection, one is to ensure complete
use of the liquid, accurate dosage, to ensure the efficacy; Second, it can
effectively reduce the appearance of ecchymosis at the injection site. Inside
the syringe injection, a small amount of air to the syringe, handheld needle,
rapid Pierce, avoid excessive force, injection too deep, it is beautiful deep
fat layer, and fixed injection needles, withdrawing without h. slow injection
solution, finally left the little push air to avoid residual liquid in the
needle, pull out the needle in order to avoid out of the solution, should press
the piston. Effective communication with the patient during the injection and
diversion of attention can relieve the pain caused by the low dosage of the
4. Needle extraction: stay for 10s after injection and then vertically
remove the needle. Please pull out the needle according to the original needle
entry Angle and gently to avoid damaging capillary tissue.
5. Apply pressure for 5 to 10 minutes, preferably at a depth of 1cm or
less. Avoid injecting patients with abdominal belt, belt.
6. After the injection, observe the pain at the injection site. Do not rub
or apply hot compress. Observe the skin condition of the injection site within
12~24h. Observe the patient's whole body condition, such as the color and
character of stool, whether there is bleeding of gums and nasal wings, etc. If
abdominal scleroma, ecchymosis >2cm, and obvious pain should be alert to the
occurrence of bleeding. If subcutaneous bleeding formation of 2cm*3cm
ecchymosis, at this time, the patient appropriate to reduce activities, cold
compress, in order to reduce the amount of bleeding and reduce peripheral nerve
sensitivity, reduce pain!