Point-of-care ultrasound in the acute abdomen and gastrointestinal emergencies: An evidence-based guide and the case for standardisation

Figure 6 Point-of-care ultrasound of free intraperitoneal fluid beyond trauma, on images acquired by the authors. A: Sagittal pelvic view showing the urinary bladder, the uterus and anechoic free fluid in the dependent pelvis; B: Sagittal pelvic view showing free fluid in the rectouterine pouch (pouch of Douglas) posterior to the uterus. Arrows indicate the labelled structures. In a high-pretest-probability obstetric population, even a small anechoic collection in a dependent recess is clinically meaningful; the significance of free fluid in other populations is interpreted in its own clinical context.