What are the methods of routine blood collection and how many diseases can X-ray check?

1? X-ray examination

X-ray examination is a medical technology that uses the penetrating power, fluorescence and photography of X-rays to develop various structures on the fluorescent screen or rubber after penetrating the human body. Through X-ray examination, chest diseases, such as the most common infectious diseases, bronchitis and pneumonia, as well as lung abscess, atelectasis, pleural effusion or lung space-occupying consolidation, can be easily diagnosed at a glance, and a definite diagnosis can be obtained. Of course, for some complex diseases, other special examinations should be supplemented when necessary, such as angiography and tomography. In addition to the most conventional chest radiograph, we can also do lateral and oblique positions to understand the lesion site, the relationship between the lesion and the heart, or the size of each atrium and ventricle of the heart from different angles.

Sometimes the doctor will let the child have a chest X-ray first. When the chest X-ray penetrates the chest of the sick child and shines on the fluorescent screen, the doctor can directly observe the lesion. Its advantages are fast and economical, and it can rotate the body position according to the condition, understand the various conditions of the lesion, get the X-ray report quickly and make a diagnosis in time. The disadvantage is that children and doctors have been exposed to x-rays for a long time, which has to be said to be harmful to the health. In addition, due to the limitation of fluorescent screen and lamp conditions, especially the radiologist's own experience, it is subjective to some extent; Children who rotate for a long time, especially young children, do not cooperate, which also directly affects the observation results. However, when taking chest films, the shooting time is short (only 1 ~ 2 seconds), children and doctors receive less X-ray dose, and the printed films can also be reviewed by higher-level doctors. Its biggest disadvantage is that it is time-consuming. There is only one posture, and it is impossible to rotate the child at any time to understand the relationship between the lesion and related tissues. In addition, the chest radiograph needs to be developed, the price is higher than that of the chest radiograph, and it often takes 1 ~ 2 days to produce results. Therefore, the two basic methods have their own characteristics, and sometimes the combination will greatly improve the diagnostic rate.

2? routine blood test

Blood routine is a laboratory examination in medicine and an effective means for doctors to diagnose diseases. Refers to the determination of blood cells in peripheral blood, including the determination of red blood cells, hemoglobin, white blood cells, white blood cell classification and platelets. When doctors diagnose diseases, the most commonly used laboratory tests are blood tests.

Peripheral blood generally takes blood from earlobe or fingertip, and newborns sometimes take blood from heel. After the blood collection site was disinfected with alcohol cotton ball, the blood flowed out of the wound with a puncture needle about 2 mm deep, and then blood was collected with a capillary tube, and the blood was blown into a certain proportion of diluent, and all indexes were determined with a blood cell counter.