What physical examinations cannot be done during pregnancy preparation

There are usually no absolutely impossible physical examinations during the preconception period, but some examinations involving radiation or invasive procedures are recommended to be postponed or carried out with caution. Special attention should be paid to examinations such as chest X-rays, CT scans, magnetic resonance imaging, hysterosalpingography, and cervical scraping.

1. X-ray chest film:

X-ray chest film uses ionizing radiation imaging. Although the single radiation dose is low, eggs and sperm during the preconception period are more sensitive to radiation. It is recommended that women preparing for pregnancy undergo this examination during the follicular phase of their menstrual cycle. If they are already pregnant or highly suspected of pregnancy, this examination should be avoided. Pregnant men are also advised to reduce unnecessary X-ray exposure to avoid affecting sperm quality. If examination is necessary, abdominal protection should be taken.

2. CT scan:

The radiation dose of CT scan is much higher than that of ordinary X-ray, especially abdominal and pelvic CT, which may have potential effects on reproductive cells. Unless it is an emergency, such as trauma or emergency, it is recommended to postpone the preparation period until after successful preparation or delivery. If examination is necessary, inform the doctor of the pregnancy preparation plan, and the doctor will evaluate the pros and cons and choose a low-dose regimen or alternative examination.

3. Nuclear magnetic resonance:

Nuclear magnetic resonance uses magnetic field imaging and does not involve ionizing radiation, theoretically having a relatively small impact on pregnancy preparation. But the inspection process is noisy and time-consuming, and some enhanced scans require injection of contrast agent, which may pass through the placenta. Therefore, when performing MRI during the preconception period, gadolinium containing contrast agents should be avoided and radiologists should be informed of the preconception status to adjust scan parameters.

4. Hysterosalpingography:

Hysterosalpingography is the process of injecting contrast agent into the uterus and fallopian tubes to observe patency through X-rays. This examination is invasive and involves radiation, usually used for infertility diagnosis. If there are no clear indications for infertility in pregnant women, it is not recommended to undergo routine treatment. After the examination, contraception should be used for one month until the contrast agent is completely expelled before attempting pregnancy to reduce potential risks to early embryos.

5. Cervical scraping:

Cervical scraping is a routine examination for screening cervical cancer, which involves scraping cervical cells for pathological analysis. The examination itself does not emit radiation, but the procedure may cause minor bleeding or irritation, with minimal impact on pregnancy preparation. Preparation for pregnancy can be carried out, but if discomfort or infection occurs after examination, the preparation plan should be postponed. It is recommended to do it 3-7 days after menstruation to avoid menstrual procedures.

Safety should be the primary principle for pre pregnancy physical examinations, with priority given to non radiation or low radiation examination items such as ultrasound, blood routine, urine routine, etc. Before any examination, it is necessary to proactively inform the doctor of the pregnancy preparation plan, and the doctor will adjust the examination plan according to the specific situation. Pay attention to a balanced diet, supplement with folic acid, maintain a regular daily routine, avoid exposure to harmful substances, and create good physical conditions for conception. If any abnormal conditions occur after examination, seek medical attention promptly and consult about the schedule for preparing for pregnancy.