The technical principle of IABP is reflected here. It uses pure physical action to expand the balloon with helium during the patient's diastole, blocking 90 to 95 percent of the arterial lumen. This can lower the blood pressure at the aortic root, increase diastolic pressure and coronary perfusion flow, increase myocardial blood supply and benefit cardiac activity. Before the heart contracts, the balloon is deflated, the aortic pressure drops, the heart's afterload drops, the heart's ejection resistance decreases, and the myocardial oxygen consumption decreases.
The above-mentioned multiple functions make IABP technology have incomparable unique advantages over other treatment methods.
Drug treatment requires the combined use of several drugs, has many side effects, and may not be effective. The surgical left ventricular assist device has stricter anticoagulation requirements for patients than IABP and has higher risks. The various advantages of IABP are destined to make IABP the first choice for patients who are eligible for IABP indications after the advent of IABP technology.
New technologies are good, but any medical operation has its technical difficulties, and IABP is no exception. Based on the working principle of IABP mentioned above, the balloon must have the best physical effect in human blood vessels. Just like balloon hemostasis, the volume of the balloon after expansion must reach the target set by the doctor for the patient, otherwise the effect will be greatly reduced.
It is very important to choose a balloon catheter model that is suitable for the size of the patient's artery. There are special ones for adults and children. There are slight deviations in the values of blood vessel diameter between women and men. The patient's body shape, fatness, blood lipids and other factors will also show different blood vessel diameters.
That being said, the models of medical devices for adults cannot be distinguished by very small differences in thickness. Moreover, the four conventional models of IABP catheters have small differences in thickness but large differences in length, which shows that doctors have to choose the model according to the patient's height. This is because in addition to the thickness of the balloon catheter, the balloon catheter is placed near the opening of the left subclavian artery at the top of the human blood vessel, and the tail end is to reach the renal artery under the diaphragm. Such a large balloon is required to affect the blood flow of the human artery.
It can only be said that when many subtle differences affect the treatment effect, they can only be compensated by the doctor's experience and technical operations.
After the machine was connected, the surgeon observed the patient's blood pressure, heart rate and other conditions on site. Based on these values, Dr. Chen made minor adjustments. After several adjustments, he still felt that something was not satisfactory.
Time passed by minute by minute, and the night was so dark that you couldn't see your hand in front of you.
...
...
It's ten o'clock at night.
After a day's work, both the leaders and their subordinates are no different, with fatigue showing on their faces.
Sitting on the sofa in the dean's office, Zhang Huayao yawned loudly. On the coffee table in front of him, the dean's secretary brought him a cup of coffee to relieve his boredom.
"No more drinking." Zhang Huayao said. Dean Liang fed him too much for dinner tonight, and he felt a little too full after drinking coffee.
Hearing what he said, the secretary went to get him a cup of Longjing tea.
There was no time to drink tea. Zhang Huayao's hands flipped through the medical records page by page.
Shin You-hwan guessed it right. He was brought here by Dean Liang to help his compatriots with overseas consultations and study the patients' medical records.
Whose medical records are these? If the dean could personally invite the hospital’s experts to come to the office to look at the medical records, they must be the medical records of a wealthy and powerful person.
Continue read on readnovelmtl.com
