Chapter 1567 【1567】Technical Compensation
The technical principle of IABP is embodied here. It uses purely physical effects to let the helium injected by the balloon expand during the diastolic period of the patient's heart, blocking 90 to 95% of the arterial lumen, so that the blood pressure can be kept in the main Arterial roots, increase diastolic blood pressure and coronary perfusion flow, increase myocardial blood supply and increase heart activity. Before the heart contracts, the air bag is deflated, the pressure of the aorta decreases, the afterload of the heart decreases, the resistance of the heart to eject blood decreases, and the oxygen consumption of the myocardium decreases.
So many of the above effects can be played together, so that IABP technology has incomparable unique advantages compared with other treatment methods.
Drug treatment requires the combined use of several drugs, which has many side effects and the effect is not necessarily good. Surgical left ventricular assist devices have stricter anticoagulant requirements than IABP, and the risk is higher. With the various advantages of IABP, it is destined that after the advent of IABP technology, clinicians are now the first choice of IABP for patients who can be within the indications of IABP.
All kinds of new technologies are good or bad, but any medical operation has its technical difficulties, and IABP is no exception. Based on the principle of action of the above-mentioned IABP, the balloon should have the best physical effect in the human blood vessel. Like the balloon to stop bleeding, the volume of the balloon after expansion must reach the goal set by the doctor for the patient, otherwise the effect will be greatly reduced .
Selecting the correct balloon catheter size for the patient's arterial vessel becomes critical. There are special ones for adults, and there are special ones for children. There is a slight deviation in the value of blood vessel diameter between women and men, and factors such as fat and thin blood lipid levels of patients will also show different sizes of blood vessel diameters.
Having said that, the models of medical devices used by adults can't tell the difference in thickness. What's more, the four conventional IABP catheter models have small differences in thickness but large differences in length, which shows that doctors should choose the model according to the height of the patient. 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 go to the renal artery under the diaphragm. Only such a large-volume balloon can affect the blood flow operation of the human body's aorta.
It can only be said that when many small gaps affect the treatment effect, they can only be made up by the doctor's experience and operation.
After the machine is connected, the surgeon observes the patient's blood pressure and heart rate on the spot. According to these values, Dr. Chen made fine adjustments. After debugging several times, I always feel that I am not satisfied.
Time passed by every minute and every second, and the night was so dark that you couldn't see your fingers.
It's ten o'clock at night.
After a day's work, there is no difference between the leader and the subordinates, with tired faces.
Sitting on the sofa chair in the dean's office, Zhang Huayao yawned big. On the coffee table in front of him, the dean's little secretary brought him a cup of coffee to relieve his troubles.
"Don't drink anymore." Zhang Huayao said, Dean Liang ate too much for dinner tonight, and he was a little too full with coffee.
Hearing what he said, the little secretary went to bring him a cup of Longjing tea instead.
Having no time to drink tea, Zhang Huayao flipped through the medical records one page at a time.
Shen Youhuan guessed it right. He was captured by Dean Liang to help his compatriots conduct overseas consultations and study patient medical records.
Who's medical record? It must be the medical records of a rich and noble person who can let the dean personally invite experts from the hospital to come to the office to read the medical records.
Thank you for your support! ! ! good night dears~