Pelvic measurement

The pelvis is the necessary passage for the fetus to be delivered. The size, shape and length of each line are directly related to the smooth progress of childbirth. Methods for clinical measurement of the pelvis include extrapelvic measurements and intrapelvic measurements. Extra-pelvic measurements can indirectly reflect the size and shape of the pelvis, and the measurement in the pelvis can directly reflect the size and shape of the pelvis. This determines whether the head basin is symmetrical, and thus determines whether the fetus can be delivered vaginally. Therefore, the pelvic measurement is prenatal examination. Essential item. Basic Information Specialist classification: maternity check check classification: physical examination Applicable gender: whether women are fasting: not fasting Included items: extra-pelvic measurement, intrapelvic measurement Tips: Follow the doctor's advice when measuring the pelvis. Normal value The normal diameter of the anterior superior iliac spine is 23-26 cm, the normal diameter of the intercondylar diameter is 25-28 cm, the outer diameter of the shame is greater than 18.5 cm, and the normal diameter of the greater trochanter is 28-31 cm. The normal diameter is 8.5-10 cm and the pubic arch angle is greater than or equal to 90 degrees. Clinical significance Whether the fetus can pass through the pelvis smoothly, is related to the size of the pelvis and the size of the fetus. Although the shape of the pelvis is normal, if the diameter of the pelvis is small, the fetus may be difficult to produce normally. However, when the pelvis is abnormal and the diameters are large enough, childbirth is not necessarily difficult. If the pelvis is normal in size and the fetus is too large, the fetus will not be commensurate with the pelvis. If the fetus is small, even if the pelvis is smaller, it can be delivered smoothly. The pelvis is large and small, and the fetus is large and small. Even if it is a mother, the size of the fetus in each pregnancy is different. People who need to be examined: pregnant women. Low results may be diseases: Abnormal bone birth canal dystocia, dystocia precautions Follow the doctor's advice when measuring the pelvis. Inspection process Examination method: The extra-bone measurement method is widely used in clinical practice, and there is also an intra-bone measurement method. Not suitable for the crowd Generally there are no people who are not suitable. Adverse reactions and risks Generally no adverse reactions.