Clinical significance of ultrasound soft indices of fetus in the middle of pregnancy The incidence of chromosomal abnormalities in live births is 0.1% to 0.2%, the most common of which…
For mitral regurgitation mild do not worry too much if there is no other discomfort, generally do not need treatment, to understand the mitral and tricuspid regurgitation, should start with…
The mitral valve is a one-way valve structure for blood flow from the left atrium into the left ventricle, including the valve leaflets, annulus, and subvalvular structures such as the…
Obstetric ultrasonography can be divided into three categories: ① Class I prenatal ultrasonography: including early pregnancy and general ultrasonography of middle and late pregnancy; ② Class II prenatal ultrasonography: including…