“…6,20 This formula is often used in medical physiology and rehabilitation medicine, helping us understand many common clinical pathophysiological mechanisms, such as erection of the penis, uterine delivery, compartment syndrome, and peripheral edema and can also help us carry out several medical operations, such as promoting bladder emptying, lumbosacral orthosis, laparoscopic surgery, edema control, etc. 6,20,21 In addition, the "gold standard" of measuring the intra-abdominal pressure by measurement of intravesical pressure is also based on this principle. 5,22 The accurate assessment of abdominal compliance is mainly calculated by the Laplace Law, that is, pressure = (2 × thickness × tension)/radius.…”