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Application of microinjection pump in the treatment of cardiovascular diseases
Jul 11, 2018

Microinjection pumps are widely used in the treatment of cardiovascular diseases and are a very mature clinical treatment technology. In recent years, some hospitals in China have begun to use microinjection pumps for clinical treatment of heart diseases. Micro-injection pump technology for the treatment of heart disease has been treated 138 cases to date, and has achieved satisfactory results.

1 Clinical data

The group received a total of 138 cases, 75 males and 63 females; aged 34 to 87 years. Among them, 103 cases were coronary heart disease, myocardial infarction and percutaneous coronary intervention, 21 cases were heart failure, 4 cases were arrhythmia, and 10 cases were hypertension. In addition to conventional drug treatment, micro-injection pumps are used, and heparin, nitroglycerin, heart-sinking, dopamine, reachable dragon, hypertonic saline, sodium nitroprusside, and nitidine are separately administered according to the needs of the disease.

2 methods and advantages

2.1 Methods (1) Micro-injection pump uses microcomputer to control the infusion rate. According to the concentration of the drug and the amount of drug required per minute, the required reference (ml/h) of the syringe pump is converted. Common drug concentration and pumping speed algorithm: heparin 100mg (2500U/2ml) + liquid to 50ml, 100U / h is 0.4ml / h; nitroglycerin 30mg + liquid to 50ml, 10μg / min is 1ml / h; reach dragon 300mg + The liquid is 50 ml, 100 μg/min is 1 ml/h; dopamine, dobutamine 120 mg + liquid to 50 ml, and 100 μg/min is 2.5 ml/h.

The pumping speed of the drug such as Hexin Shuang can be calculated according to the formula: the required drug [μg / (kg · min) × 60 (min) × body weight (kg)] / [drug concentration (mg / ml) × 1000] can be obtained The required number of ml / h. (2) Select 20ml or 50ml syringe according to your needs, mix the medicine solution according to the doctor's advice and mix well. Connect the pump tube, needle, and exhaust. Fix the syringe on the syringe pump. Take care to avoid light when using light. Syringe or dark extension tube to protect from light. Note that the amount of solvent in the drug itself is subtracted when calculating the drug concentration. (3) Turn on the syringe pump, adjust the speed, connect the venous channel, press the START button, the small wheel in the upper left corner of the screen can be seen to rotate, indicating that the syringe pump is running normally. (4) When the liquid medicine in the syringe is about to be discharged, prepare another liquid medicine in advance to prepare for timely replacement and maintain the continuity of the medicine.

2.2 Advantages (1) The application of micro-injection pump accurately calculates the dosage according to body weight, minute and hour, increases the safety factor and effective concentration of the patient's medication, improves the therapeutic effect, and is beneficial to the patient's early recovery. (2) With a small amount of liquid, the drug can be accurately, tracely and constantly introduced into the patient, that is, the dosage can be controlled, the optimal effective concentration of the drug can be ensured, and the burden on the patient can be reduced, especially in patients with renal dysfunction. Quantity, to avoid excessive infusion caused by increased heart failure. (3) It is easy to operate and easy to use, which reduces the burden on nurses and improves the quality of medical care.

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