case_images: PMC6157181_01
case_images: (A) Ultrasound and zero pressure level line setting during amnioreduction for polyhydramnios. (B) Circuit that includes a silicone stain-gauge transducer (DX-300, Nihon Koden) for measuring pressure.
case_images: CRIOG2018-4281528.001.jpg
case_images: PMC6157181_01_CRIOG2018-4281528.001.jpg
case_images: fig1
case_images: A zero pressure level line setting was performed at the estimated vertical line using the ultrasound-guided needle tip level (Figure 1).
case_images: PMC6157181_02
case_images: PMC6157181_03