Puncture

Puncture the tissue with a hollow needle or other instrument with a diagnostic or therapeutic purpose. Thus, the material is obtained from various organs, vessels, cavities or pathological formations (especially tumors) for a more accurate and in-depth study under a microscope. Diagnostic punctures are also used to introduce into the bones, vessels, cavities radiopaque and radioactive isotope-labeled substances to study the functions of systems and organs.
This method is used to measure pressure in large vessels, the heart and to examine organs with the help of special tools. It is necessary for the administration of drugs with local anesthesia and Novocain blockades. Serves for infusion of blood, its components, blood substitutes and for obtaining blood from donors.
With the help of a needle, it is possible to remove pathological contents from the cavities, such as gas, pus, ascitic fluid, as well as emptying the bladder if it is impossible to catheterize.
In the area of ​​the proposed puncture, the patient's skin is treated with an antiseptic. Puncture of superficial tissues is made without anesthesia, deep located - under local anesthesia, and sometimes under anesthesia. Use needles of different length and diameter. The patient after the puncture is under the supervision of a doctor.