Then the question is, why can't the doctor's hand droop naturally or be placed in other positions, but must be placed on his chest?
Before answering this question (the answer is at the end of the article), let's dig the tip of the iceberg from the vast medical history and talk about the development history of aseptic technology!
The age of terror
Before the19th century, anesthesia and aseptic operation had not been popularized in the surgical field, which was simply a very terrible era. Take caesarean section as an example. Because doctors don't have the concept of disinfection and sterility in their minds, caesarean section is simply the door of maternal death, and there are few records of maternal success.
The concept of disinfection was born.
1865, a little boy was injured by a carriage and his fractured tibia came out of the wound. The situation is very serious. Joseph Lister, the father of surgical disinfection, helped the little boy to connect the bone, then wrapped the wound with a bandage soaked in linseed oil and phenol (a disinfectant) solution, and finally the operation was successful. Since then, the concepts of disinfection and antisepsis have really entered the medical history. However, in the decades after Liszt put forward surgical disinfection, one problem has been ignored, and that is the air purification in the operating room.
The birth of clean operating room
It was not until 1930s that people began to realize that air might be the source of surgical infection. In 1960s, British doctor Charnley, the pioneer of total hip replacement, used the world's first ultra-clean ventilation system for the first time to avoid deep wound infection, which turned the operating table into a relatively sterile clean area and reduced the postoperative infection rate from 10% to 0.2%.
1966, the world's first laminar clean operating room was established in Barton Memorial Hospital, USA. Subsequently, clean operating rooms were built in various countries, and clean operating rooms in China began to appear in the 1980s.
100 laminar flow operating room with the highest cleanliness.
According to the different air cleanliness, laminar flow clean operating rooms are also divided into different grades, such as 100, 1000, 10000. The smaller the number, the higher the air cleanliness.
100 laminar flow operating room is the cleanest, which can be called the standard of space laboratory. Using air purification technology to control microbial pollution in different degrees to meet the requirements of controlling air cleanliness in space environment and being suitable for various operations. And provide appropriate temperature and humidity, create a fresh, clean and comfortable operating space environment with low bacterial count, so that the patient's tissue is damaged as little as possible during the operation, and the infection rate is greatly reduced.
The 100-level laminar flow operation center of Yunshan Yunli Hospital: building operation safety and improving operation quality.
From the customer's point of view, spruce Yunli Hospital has invested heavily in the construction of four 100 laminar flow operating rooms, one of which is a positive and negative pressure operating room. Operating room with constant temperature, humidity and pressure is clean, comfortable and sterile, which can effectively eliminate the harm of air suspended matter pollution to surgical patients, meet the different requirements of various operations, strictly put an end to surgical infection caused by the operating environment, maximize the quality of surgery, and effectively reduce iatrogenic infection during the operation, so as to get better and better after the operation.
● Complete facilities and advanced equipment.
The operating room is equipped with domestic advanced digital system, anesthesia and monitoring equipment (Shenzhen Mindray), hysteroscopy and laparoscopy system (KARL STORZ, Germany) and other advanced equipment.
The operations that can be performed include: general surgery (such as hernia repair, appendectomy, cholecystectomy, etc. ), gynecology (such as hysterectomy, tubal ligation, uterine cavity and cervical surgery, etc. ), urology (such as circumcision, urolithiasis surgery, etc. ), orthopedics (including spine, joints, pelvis, limbs, hand and foot injuries, etc. ), stomatology, plastic surgery and other departments.
● Create a platform for enjoying surgery and integrate high-quality expert resources.
* * * Enjoy the world-class surgical equipment, * * * enjoy the huge expert database of famous doctors, and help customers quickly obtain authoritative diagnosis and treatment opinions, obtain surgical treatment of famous doctors as soon as possible, and quickly arrange hospitalization. Shorten the process of medical treatment and improve the efficiency of medical treatment.
Finally, back to the question at the beginning of the article: Why do doctors put their hands on their chests when they enter the operating room?
I think, at this time, you have understood that the position on the chest is relatively sterile, because the air flow in the operating room is one-way. Therefore, in order to maintain the sterile state after disinfection and minimize surgical infection, doctors must put their arms on their chests. From this detail, we can also see how strict the requirements for "clean and sterile environment" are.