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Safety application of insulin pen

 
The insulin pen is accepted by a large number of diabetic patients because of its accurate dosage, flexible use, simple operation, and easy to carry. However, the application of the insulin pen has certain technicalities. Improper use will affect the treatment results of patients and reduce the safety of treatment.
 
Therefore, it is necessary to strengthen the correct use of the insulin pen and improve the patient's ability to inject insulin by himself, so that the efficacy of the drug can be improved and the blood glucose can reach the standard.
 
First, check the specifications and appearance of the insulin before injecting the insulin, check whether the type of insulin in the refill is the correct type required, install the insulin refill in the insulin pen correctly, and pay attention to the exhaust. Premixed insulin needs to be light. Shake gently.
 
So what should we pay attention to when using insulin pen?
 
First, the choice of injection site
 
Commonly used insulin injection sites are the abdomen (except within 5 cm of the umbilical cord, about a palm wide part on both sides of the navel), the outer side of the upper arm (outside of the deltoid muscle of the arm), the anterior and lateral sides of the thigh, and the arm. Tissue facilitates the absorption of insulin, the nerve endings are less distributed, and the uncomfortable feeling of injection is relatively less. Insulin absorption in different parts ranges from fast to slow, in order: abdomen, upper arms, thighs, and buttocks. Among them, the abdomen has the fastest absorption rate, the highest absorption rate, and is not affected by the movement of the limbs. The abdominal subcutaneous tissue is thick, which can reduce the risk of injection into the muscle layer. It is the first clinically recommended injection site.
 
Rotation of injection site
 
Insulin itself is a growth factor. Repeated injections at the same site will cause the subcutaneous fat layer in that site to proliferate, resulting in induration and liposarcoma, which will cause the absorption rate to decrease. Therefore, skin rotation must be performed frequently. The distance between the two injection points should be more than 1 cm, and the injection should not be re-injected at the previous injection site to avoid insulin malabsorption. The rotation of injection can be based on the following principles: First, choose a symmetrical position to rotate the injection. After the round is completed, change to another left-right symmetrical part. Second, the rotation of injection points in the same injection area should be regular to avoid confusion.
 
Third, injection time
 
Pre-meal injection: conventional insulin needs to be injected before meals;
 
Meal injection: fast-acting insulin does not need to be injected in advance, and meals are taken immediately after injection, otherwise hypoglycemia is likely to occur;
 
Postprandial injection: fast-acting, short-acting insulin is injected as directed by your doctor;
 
Injection before bed: Medium and long-acting insulin can keep blood sugar steady at night;
 
Fourth, the injection method
 
When choosing an abdominal injection, except for overweight and obese patients who can directly enter the needle, you need to pick up the skin with your thumb and index finger to avoid pinching the skin with multiple fingers. The depth of the needle should be under the skin to avoid reaching the muscle layer. Pain, and it will accelerate the absorption of insulin, leading to unstable blood glucose control; if the injection depth is too shallow, only to the epidermal layer, it will cause insulin to ooze and bring pain or immune response. The needle was inserted at a 45-degree angle. When choosing thigh area injection, for normal weight people, overweight adolescents and obese people should pick up the skin and insert the needle vertically. After the injection of the liquid medicine, the needle stays under the skin for more than 10s before pulling the needle, and the dry cotton swab presses the needle eye for more than 3min. After the injection, put the inner needle cap, unscrew the needle, discard the used needle, and put the pen cap back [1].
 
Five, preservation of insulin
 
Before opening, it should be stored in a refrigerator at 2 ° C-8 °. After opening, it can be stored at room temperature (about 20 ° C, not more than 25 ° C-30 ° C) for 30 days, avoiding light and overheating. Any insulin should be Avoid freezing, which can cause insulin degeneration and failure.