TY - CHAP M1 - Book, Section TI - PELVIC FLOOR ULTRASOUND A1 - Dietz, Hans Peter A2 - Fleischer, Arthur C. A2 - Toy, Eugene C. A2 - Lee, Wesley A2 - Manning, Frank A. A2 - Romero, Roberto J. Y1 - 2015 N1 - T2 - Sonography in Obstetrics and Gynecology: Principles & Practice, 7e AB - DefinitionsBallooning: enlargement of the levator hiatus to 25 cm2 or more on Valsalva.Bladder neck descent: the extent of caudal movement of the bladder neck on maximal Valsalva, relative to the symphysis pubis.Detrusor wall thickness: thickness of the bladder wall, measured at less than 50-mL bladder volume at the dome, from leading edge (mucosa) to leading edge (peritoneum).Funneling: opening of the bladder neck on Valsalva.Levator avulsion: detachment of the puborectalis muscle from its insertion on the pelvic sidewall (inferior pubic ramus).Levator hiatus: the plane of minimal hiatal dimensions between symphysis pubis and inferior pubic rami anteriorly and the puborectalis loop laterally and posteriorly.True rectocele: diverticulum of the anterior rectal wall, which is defined by a 90-degree discontinuity of the anterior rectal wall at the junction of the anal canal and rectal ampulla, resulting in a herniation of rectal contents into the vagina on Valsalva. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - obgyn.mhmedical.com/content.aspx?aid=1106711039 ER -