Intrapelvic measurement

The measurement in the pelvis is used to diagnose the size and shape of the pelvis, so as to determine whether the pregnant woman can deliver smoothly through the vagina. The time measured in the pelvis should be performed after 24 weeks and 36 weeks before pregnancy. The operation must be carried out under disinfection. The operation should be gentle when checking. Basic Information Specialist classification: maternity check check classification: physical examination Applicable gender: whether women are fasting: not fasting Tips: Check your relaxation, you should face it positively and actively cooperate with the inspection. Normal value 1. The shame inner diameter (also known as the diagonal diameter) is the distance from the lower edge of the pubic symphysis to the midpoint of the upper edge of the iliac crest. The normal value should be greater than 12cm. This value is subtracted by 1.5~2cm, which is the true combined diameter length. 2. When measuring the diameter of the ischial spine, the examiner touches the finger in the vagina to the ischial spine on both sides, and can only estimate the distance between them. The normal value is 10 cm. Clinical significance Abnormal results: 1. The shame inner diameter is less than 12cm. 2. The diameter of the ischial spine is less than or greater than 10 cm. Need to check the crowd: those who have pelvic stenosis or the first two weeks before the expected date of the first trimester of the pregnant woman has not entered the basin and many times of dystocia. Positive results may be diseases: dystocia, abnormal obstruction of bone birth canal Taboo before inspection: no special contraindications. Requirements for inspection: Check the feelings of relaxation, should face positively, and actively cooperate with the inspection. Inspection process 1. The patient empties the bladder. 2. Prepare disinfectant gloves, lubricating oil or disinfectant soap. 3. Pregnant women take the bladder lithotomy position, the vulva is routinely disinfected, the inspector wears sterile gloves, the food and the middle finger are coated with the lubricant, and gently penetrate into the vagina, and the movement measures the diameter gently. 4. The time measured in the pelvis should be performed after 24 weeks and 36 weeks before pregnancy. The operation must be carried out under disinfection. The operation should be gentle when checking. 5. Shame inner diameter (also known as diagonal diameter) check: When measuring, touch the middle finger of the vagina into the midpoint of the upper edge of the iliac crest, so that the upper edge of the index finger is close to the lower edge of the pubic symphysis, and the index finger of the other hand is used to mark this. After close to the point, pull out the finger in the vagina and measure the distance from the tip of the middle finger to the marked point, which is the internal diameter of the shame, and then converted into the true combined diameter. If the middle finger is not touched, it means the line is normal. 6. Ischial spine diameter examination: measured with a middle pelvis measurer, but less clinically. The internal measurement should also pay attention to the patella curvature, the width of the ischial notch and the pubic arch angle. Not suitable for the crowd People with suspicious symptoms such as abortion are contraindicated. Adverse reactions and risks Nothing.

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