The technical principle of IABP is reflected here. It uses pure physical effects to allow the balloon to inject helium to expand during diastole of the patient's heart, blocking 90 to 95% of the arterial lumen. This can reduce blood pressure in the main artery.
At the arterial root, it increases diastolic pressure and coronary perfusion flow, increases myocardial blood supply, and is beneficial to cardiac activity. Before the heart contracts, the air sac is deflated, the aortic pressure decreases, and the afterload of the heart decreases. The resistance to cardiac ejection decreases, and myocardial consumption decreases.
Oxygen levels then dropped.
All the above effects that can be achieved together give IABP technology unique and incomparable advantages over other treatment methods.
Drug treatment requires the combined use of several drugs, which has many side effects and may not necessarily be effective. Surgical left ventricular auxiliary devices have stricter anticoagulation requirements for patients than IABP, and the risks are higher. The various advantages of IABP are destined to be used after the advent of IABP technology.
, clinicians now use IABP as the first choice for patients who are eligible for IABP.
Various new technologies are good, but any medical operation has its technical difficulties, and IABP is no exception. Based on the above-mentioned principle of IABP, the balloon must have the best physical effect in human blood vessels, just like the balloon for hemostasis.
, the volume after balloon expansion needs to be able to reach the goal set by the doctor for the patient, otherwise the effect will be greatly reduced.
It becomes very important to choose a balloon catheter model that suits the size of the patient's arterial blood vessels. There are ones for adults, and there are ones for children. There is a slight deviation in the diameter of blood vessels between women and men, and the patient's body is fat or thin, and the blood lipids are high or low.
Factors such as these will also cause blood vessel diameters to vary in size.
To put it this way, the models of medical devices used by adults cannot tell the difference in thickness. What’s more, the four conventional models of IABP catheters have small differences in thickness but large differences in length, which shows that doctors should choose models based on 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. It takes such a large volume of balloon to affect
The operation of blood flow to the human body's aorta.
It can only be said that when there are many subtle gaps that affect the treatment effect, they can only be made up for by the doctor's experience and operation techniques.
After the machine was connected, the surgeon observed the patient's blood pressure, heart rate, and other conditions after getting on the machine. Based on these values, Dr. Chen made fine adjustments. After several adjustments, he always felt that something was not satisfactory.
Time passed by minute by minute, and the night became so dark that I couldn't even see my fingers.
It's ten o'clock at night.
After a day's work, there is no difference between the leader and his subordinates. Their faces are tired.
Sitting on the sofa chair in the dean's office, Zhang Huayao yawned greatly. On the coffee table in front of him, the dean's secretary brought him a cup of coffee to relieve his difficulty.
"No more." Zhang Huayao said. Dean Liang fed him too much for dinner tonight, and he was a little too full after drinking coffee.
After hearing what he said, the secretary went to change a cup of Longjing tea for him and brought it to him.
There was no time for tea, so Zhang Huayao flipped through the medical records in front of him.
Shen Youhuan guessed that he was captured by Dean Liang to help his compatriots conduct cross-ocean consultations and study patient medical records.
Whose medical records are there? If the hospital director can personally invite experts from the hospital to come to the office to look at the medical records, it must be the medical records of a wealthy and noble person.