How do you suggest using bladder POCUS to evaluate for urinary retention in patients with ascites?

The most important thing is to look for free fluid extending beyond the bladder's expected margins, especially around adjacent pelvic structures. Ascites may surround or displace the bladder, making its boundaries difficult to identify. In general, the shape tends to be different. Ascites is usually ill-defined and irregular, whereas a bladder is usually defined and oval or rounded. The walls of the bladder tend to be discrete, whereas there should be no continuous wall around the ascites. Ascit...