What is the relationship between the infusion speed setting?

The setting of this speed is actually directly related to the performance of the drug, if the speed is too fast, it will definitely cause physical harm, and the impact on the body is particularly great.

It is related to physical fitness. Young people can adjust the speed appropriately, and older people should slow down. Because young people are more likely to absorb medicines than older people.

It is related to the setting speed of the infusion tube, and each infusion device has a tube on it to control the flow speed of the liquid.

This has a certain relationship, if your blood vessels are relatively thin, you can adjust this speed slower, you will not feel uncomfortable, if you are particularly anxious, you can speed up a little.

The formula is as follows:

Inputs per hour (ml) = 4 drops per minute

Number of drops per minute (gtt min) = total ml of fluid infusion Total time of infusion (h) 4].

Time required for infusion (h) = total ml of fluid infusion (4 drops per minute).

There are three types of drip coefficients of infusion sets commonly used in clinical practice in China, and the following formula can be inferred according to the drip coefficient of infusion sets:

Number of milliliters entered per hour (ml h) (drop min) 60 min h) drop coefficient (drop ml).

Therefore, when the drop coefficient is drop ml, substituting the above formula respectively can be obtained:

1. If the drop coefficient is 10 drops ml, then: the number of ml (drop number min) entered per hour is 6.

2. If the drop coefficient is 15 ml, then: the number of ml (drop min) entered per hour is 4.

3. If the drop coefficient is 20 ml, then: the number of ml (drop min) entered per hour is 3.

The drop coefficient of each infusion set is fixed, so when any variable between the number of milliliters per hour and the number of drops per minute is known, the other variable can be obtained by using the above three formulas.

Equation 1: Knowing the total amount of input liquid and the estimated time to finish the infusion, find the number of drops per minute

Number of drops per minute = total amount of fluid, drip coefficient, time taken for infusion.

For example, a patient needs to be transfused with 1500ml of fluid, and the infusion is planned to be completed in 10 hours. It is known that the infusion set drip coefficient is 20, and the number of drops per minute is obtained.

The known amount of this question is the total amount of liquid input and the estimated time of infusion, and the number of drops per minute is required to be calculated, then the result is calculated by applying Equation 1 as follows: number of drops per minute = total amount of liquid Drip coefficient Time taken for infusion.

Drops per minute = 1500 20 (10 60) = 50 drops.

Time taken for infusion (h) = total amount of fluid infusion drip coefficient (60 drops per minute) or: time taken for infusion (min) = total amount of fluid drip coefficient number of drops per minute.

A patient started a fluid infusion at 10:00 a.m. and asked for 40 drops. It is known that the infusion coefficient of the infusion set is 20, and it is a few points to ask the patient to input 1000ml of liquid.

The known amount of this question is the total amount of liquid input and the number of drops per minute, and it is required to calculate the estimated time to finish the infusion. Then apply Equation 2 to calculate the result as follows:

Time taken for infusion (h) = total amount of fluid drip coefficient (60 drops per minute).

Time taken for infusion (h) = 1000 20 (40 60) or time taken for infusion (min) = total amount of fluid, drip coefficient Number of drops per minute.

Time taken for infusion (min) = 1000 20 40 = 500min

It takes about an hour for the patient to inject 1000ml of fluid, i.e. 18:18 p.m.

Effects of too fast infusion:

Usually the correct infusion speed of the general drug is 40-60 drops in minutes.

If the speed is too fast, it means that we quickly inject the liquid into the middle of the cycle, so the amount of blood in his circulation increases rapidly.

After the increase, the patient may have a heavy heart load and circulatory overload, so the patient may have chest tightness, cough, and even cough up some pink frothy sputum.

This is a very typical manifestation of acute pulmonary edema, which we call circulatory overload.

The unit of 500 is milliliters, to 60 drops in minutes, then it is necessary to know how many milliliters each drop is, then: the number of minutes required = 500 (60 * how many milliliters per drop).

Inputs per hour (ml) = 4 drops per minute

Number of drops per minute (gtt min) = total ml of fluid infusion Total time of infusion (h) 4].

Time required for infusion (h) = total ml of fluid infusion (4 drops per minute).

Preparation of infusions

Fresh water for injection should be used for the preparation, and high-quality raw materials for injection should be used as raw materials. According to the quality of the raw materials, the dilute blending method and the concentration blending method are used respectively, and the operation method is the same as that of the injection.

Thinning method. When the quality of raw materials is good, the concentration of liquid medicine is not high, and the amount of liquid is not too large, the dilute mixing method can be used. After the required concentration is prepared, the pH can be adjusted, and the activated carbon added if necessary is stirred, and filtered after about 30 minutes. This method generally does not require heating.

Thick blending. The preparation of liquid medicine is mostly made by the concentration method, and the method is the same as that of injection. In mass production, heating and dissolving can shorten the operation time and reduce the chance of contamination, and the concentration method can filter out impurities with low solubility.

Inputs per hour (ml) = 4 drops per minute

Number of drops per minute (gtt min) = total ml of fluid infusion Total time of infusion (h) 4].

Time required for infusion (h) = total ml of fluid infusion (4 drops per minute).

Calculation of infusion rate.

Inputs per hour (ml) = 4 drops per minute

Number of drops per minute (gtt min) = total ml of fluid infusion Total time of infusion (h) 4].

Time required for infusion (h) = total ml of fluid infusion (4 drops per minute).

I think it should be calculated like this: (500*15) (60*60)=7500 3600=hours.

Every time you get sick, the infusion is a long waiting process, and the impatient patient will adjust the infusion speed very quickly. But in fact, the infusion speed should be set according to different conditions, and if the infusion speed is too fast, it will have some impact on the patient. So, how should we adjust our infusion speed during infusion?

One. We all know that there is a process for the fusion of a high concentration of liquid with a low concentration of liquid. Therefore, for those high-concentration liquids, we should try to reduce the speed of infusion to ensure that the patient does not feel uncomfortable during the infusion.

If the speed is adjusted very fast during the infusion, it will have a certain impact on the patient. Examples include pain, vomiting, and so on. Therefore, for the sake of your own health, you should adjust the infusion speed according to the situation of the infusion fluid.

Two. The patient's physical condition should be appropriately slowed down when the patient himself has some heart disease, weak constitution and other conditions. Especially for patients with heart disease, if the infusion speed is too fast, there will be a hidden danger of heart disease.

In order to pursue the speed of infusion, but pay it with his own life, some of the gains outweigh the losses.

Three. The patient's condition and the type of illness of the patient themselves are also one of the conditions that affect the speed of infusion. For example, in summer, many people are more prone to dehydration, so the infusion speed should be accelerated during the infusion.

And for people with strong body resistance, it can also speed up the infusion. However, the patient suffers from high blood pressure, and the infusion should be avoided as much as possible. Otherwise, the patient will feel very uncomfortable.

Therefore, we should try to adjust an appropriate drip speed during infusion. Giving too fast an infusion can cause a lot of problems, and when gentle, it can cause nausea, red face, red ears, and chest tightness. In severe cases, it can cause vomiting, rapid heartbeat, and even shock.

For the sake of our own health, we should reasonably adjust the infusion speed according to the specific situation.

The infusion rate for adults is 40-60 drops, and for children and the elderly due to incomplete organ development or reduced function, 20-40 drops and 40 drops, respectively.

There are many reasons to adjust the speed of infusion, sometimes the speed of infusion is determined according to the drug, and it will also be adjusted according to different age groups or physical diseases, there are many reasons!

The drip rate is 5-3 ml per minute.

1 hour = 60 minutes.

Drip infusion of 100ml of liquid, required to be completed in an hour, using division, column formula can be obtained

100/60=5/3 ml/min

So the drip rate is 5-3 ml per minute.