For different vascular conditions, slight adjustments can be made to select different needle entry angles. Normally, the needle is inserted at an angle of 15-30° to the skin.
Generally, the indwelling needle is punctured at an angle of 15-30° to the skin, and after seeing the return of blood, the angle is lowered and the needle is pushed in 0.2-0.5cm.
When advancing the needle, the patient was asked to make a fist, the left hand tensed the skin, the right hand with the thumb, finger and middle finger to clamp the catheter needle wing for puncture. When blood returns, the left hand fixes the catheterized needle, the right hand pulls out the needle core 0.5-1cm, and the left hand sends the outer sleeve all the way into the vein, and when blood returns again, the pulse band is loosened, the patient is instructed to loosen his fist, and the needle is deflated and secured with a patch.
The use of indwelling needles can reduce the pain caused by repeated venous puncture and the fear of injections, facilitate the clinical use of medication, rescue medication for acute and critical patients, and reduce the workload of nurses, so intravenous indwelling needles are widely used in clinical practice.
Healthcare professionals are qualified professionals, it is recommended that patients trust the professional quality of some healthcare personnel, without too much worry, any discomfort please consult a doctor in a timely manner.