What is the method to measure vital capacity

We all had physical examinations when we were in school. Among the items in the physical examination, one was to measure lung capacity. The instrument used for measurement at that time was an instrument that blew into the lungs, and then the specific value would be obtained. You should know that measuring lung capacity is measuring cardiopulmonary capacity, so people with strong lung capacity have very good cardiopulmonary function. So, how can you measure your lung capacity at home?

Have you encountered any difficulties in measuring your vital capacity? For example: If you want to hold a large bottle full of water in one hand, can your little hand handle it? The other hand has to insert one end of a catheter into the bottle mouth and then blow air at the other end. Can one hand take care of both ends of the catheter? Is it possible that while you were blowing air into one end of the catheter, the other end of the catheter fell out of the bottle? Do you think it is inconvenient to fill water, insert a catheter, and blow air?

Today I will teach you how to make a simple spirometer and measure your lung capacity easily. Just slightly change the spirometer above and the measurement will become very simple. Let's modify it together:

1. Solve the problem that one hand cannot hold a large bottle. Use a plastic bottle with a handle (about 1800ml cooking oil bottle or wine bottle) to make a simple spirometer. When measuring, hold the handle of the measuring device with one hand and hold it steady.

2. When fixing the ventilation tube on the plastic bottle to make a spirometer, first fix the ventilation tube on the plastic bottle, and don't be careful that the other end of the tube falls out during measurement. Find a rubber transparent hose and drill a small hole at the bottleneck of the plastic bottle. The size of the small hole should be slightly smaller than the rubber tube. After the small hole is drilled, squeeze the rubber hose into it. In this way, depending on the elastic force of the rubber tube, the rubber hose will automatically lock in the small hole and be firmly fixed on the measuring bottle.

3. Make the spirometry scale as accurately as possible so that the measured data will be accurate. Find a drinking cup with a ruler, and pour 100ml of water into the plastic bottle at a time. Pour 100ml of water into the plastic bottle and make a mark on the horizontal surface of the bottle wall with an oil-based colored pen. After completing all this, lengthen the marks at 500ml, 1000ml and 1500ml to make it easier to read the data accurately when measuring.

After this modification, the spirometry device no longer needs a catheter during measurement. It can be held more steadily and the step of inserting a catheter is omitted. You just need to blow air, which is quick and efficient.

In short, if we want to improve our cardiopulmonary function in our daily life, we should enhance the heart's ability to pump blood and the lungs' ability to inhale oxygen. After all, these two organs are directly related to the capabilities of other organs in the body, and enhancing cardiopulmonary capacity is relatively simple, all you need to do is exercise. For example, you can jog or swim, or do chest expansion and stretching exercises at home.