Pelvic external measurement is a type of examination that expectant mothers need to undergo during pregnancy. If pregnant women choose vaginal delivery, this should be a necessary examination, as the size and shape of the pelvis determine whether the fetus can pass through the vagina smoothly. The measurement of the pelvis includes many measurements. Do you know what measurements are included? Let's take a look at what pelvic external measurements include together?
1. Interiliac spine diameter. Assist pregnant women to lie flat on the examination bed. Touch the anterior superior iliac spines on both sides and measure the distance between the outer edges of the anterior superior iliac spines on both sides.
2. Interiliac crest diameter. The pregnant woman lies flat on the examination bed. Measure the widest distance between the outer edges of the iliac crest on both sides. 1. Two diameter lines can indirectly determine the length of the transverse diameter of the pelvic entrance.
3. Sacral and pubic outer diameter. Assist pregnant women in taking a left lateral position, with their right leg straight and left leg bent. The distance from the midpoint of the pubic symphysis to the depression below the spinous process of the fifth lumbar vertebra. Below the spinous process of the fifth lumbar vertebra, equivalent to the upper corner of the rhomboid fossa; Or equivalent to 1-1.5cm below the midpoint of the iliac crest line on both sides. This diameter line can indirectly infer the length of the anterior posterior diameter of the pelvic entrance and is the most important diameter line in pelvic external measurements.
4. Exit transverse diameter (ischial tuberosity diameter). Assist pregnant women in a supine position, with legs bent and hands tightly embracing their knees. Also known as ischial tuberosity diameter. When measuring, the examiner faces the external genitalia of the pregnant woman, touches the ischial tuberosity, and measures the distance between the inner edges of the two ischial tuberosities.
5. Angle of pubic arch. Assist pregnant women in lying down with legs bent. Hug your knees tightly with both hands. Align the tips of the left and right thumbs diagonally, place them on the lower edge of the pubic symphysis, and place the left and right thumbs flat on the descending branch of the pubic bone. Assist pregnant women in organizing their clothes, organizing their belongings, and putting them back in their original positions.
The above is the encyclopedia introduction about what pelvic external measurement includes. In short, when examining pelvic external measurements, it is required to relax the mind, actively face and cooperate with the examination. The movements should be gentle. Pay attention to keeping warm and covering the patient! I hope this article can help everyone and make expectant mothers feel more at ease!
