Qiao Siyu, as a surgeon, had also encountered several patients with pericardial effusion caused by pericarditis.
To put it bluntly, the human heart cannot come directly into contact with organs such as the liver or lung lobes. It is enclosed in a layer of membrane, and between this membrane and the heart muscle there is some pericardial fluid, which serves to relieve pressure and provide lubrication, all with the aim of protecting the heart.
To be even more straightforward, it's as if the heart is wrapped in something like a balloon with a bit of liquid in it—about forty to fifty milliliters for a normal person.
The condition of pericardial effusion caused by acute pericarditis is like continually injecting water into that balloon, inflating it to the point of creating great pressure, which then directly compresses the heart that should be protected.
Once the pressure reaches a certain level, the heart will inevitably stop pumping blood, leading to shock.
