Precautions after cord blood puncture

Umbilical cord blood puncture is generally used to check whether the fetus has chromosomal diseases. Although umbilical cord blood puncture is somewhat traumatic, generally going to a regular professional hospital for examination will reduce a lot of risks. However, after the puncture, postoperative care is very important. You need to stay in bed and rest after the operation, and you must avoid strenuous exercise at ordinary times. Once you experience any discomfort, you need to go to the hospital immediately.

Umbilical cord blood puncture precautions

The subjects for umbilical cord blood puncture are pregnant women who are determined by the doctor to need umbilical cord blood related examinations after visiting the genetic counseling clinic. Including high-risk cases where the amniotic fluid examination time was missed, cases of fetal malformation, cases of suspected viral infection, cases of suspected fetal anemia, etc. The surgery can be performed any time after 20 weeks of gestation, usually between 26 and 30 weeks of gestation.

You should pay more attention to rest in the 3 days after umbilical cord blood puncture, try to avoid strenuous exercise and avoid lifting heavy objects. If you experience any of the following symptoms, such as bleeding, watery discharge, or high fever, you should go to the hospital immediately.

Umbilical cord blood puncture process:

Sign the informed consent form for cord blood puncture and related examinations; empty the bladder before the operation, lie in supine position, and use B-mode ultrasound to locate the placenta and umbilical pedicle on the pregnant woman's abdominal wall; monitor the fetal heart rate and determine the position of the fetus; disinfect the skin of the surgical field, insert the needle under the guidance of B-ultrasound, and puncture the root of the umbilical cord on the fetal side or on the placental side; first draw 0.2-0.3 ml to confirm that it is cord blood, then draw 2-3 ml of blood, remove the puncture needle, measure the fetal heart rate again, and check whether there is bleeding from the umbilical cord and placenta at the puncture site. Detect fetal heart rate and fetal movement for 15-20 minutes; check again 1 hour after the operation and if there is no abnormality, you can leave the hospital and go home.

What is cordocentesis?

Umbilical cord puncture is actually a surgery similar to muscle acupuncture. If you relax during the surgery, there will be no obvious pain. At the same time, the operation generally requires to be performed by a doctor with experience and qualifications in prenatal diagnosis. The puncture operation itself is a minor operation with low risk, so there is no need to worry too much.

Umbilical cord blood puncture is a method of prenatal diagnosis, but it is not necessary for everyone.

After visiting the genetic counseling clinic, the doctor determines that pregnant women who need to undergo umbilical cord blood tests include: high-risk cases who missed the amniotic fluid test time and fetal malformation cases, suspected viral infection cases, suspected fetal anemia cases, etc., can all undergo umbilical cord blood tests. For older pregnant women, it is best to do an umbilical cord blood test to detect whether the fetus has chromosomal abnormalities and hereditary blood diseases.

Indications for cord blood puncture are:

1. The patient has indications for amniocentesis and the gestational age exceeds the standard for amniocentesis.

2. To make corrections or remedial diagnosis for pseudochimerism or culture failure in chorionic villus and amniotic fluid cultures.

3. Diagnosis of fetal intrauterine infection.

4. Prenatal diagnosis and risk estimation of fetal blood system diseases, such as hemolytic anemia, autoimmune thrombocytopenic purpura, hemophilia, and α and β thalassemia.