What should I do if I can’t see it in the NT check?
NT examination (nuchal translucency examination) is an important malformation screening method in early pregnancy, but some pregnant women may encounter unclear results or cannot complete the examination. The following is a compilation and analysis of related topics and solutions that have been hotly discussed across the Internet in the past 10 days.
1. Data statistics on recent hot topics
| Ranking | Topic keywords | Number of discussions (10,000) | main focus |
|---|---|---|---|
| 1 | NT check failure reasons | 18.6 | Fetal position, equipment accuracy, gestational age calculation |
| 2 | NT Check Alternatives | 12.3 | Non-invasive DNA and amniocentesis cost-effective |
| 3 | NT value exception handling | 9.8 | Review time nodes and risk level assessment |
2. Common problems and solutions
1. Why can’t I see it in NT check?
According to medical data, about 15%-20% of pregnant women will fail their initial NT examination. The main reasons include:
| Reason type | Proportion | solution |
|---|---|---|
| Poor fetal position | 62% | Review after walking around/re-examine on another day |
| gestational age calculation error | twenty three% | Recheck last menstrual period date |
| Device resolution limitations | 11% | Replace high-level hospital examination |
2. Follow-up processing process for failed inspections
It is recommended to follow the following step-by-step solution:
•First failure:Try again after an interval of 1-2 hours. During this period, you can stimulate fetal activity by eating sweets.
•Second failure:Change to supine/side decubitus position within 3 days for review
•Three failures:Consider switching to non-invasive DNA testing (can be done at 12-22 weeks)
3. Comparison of alternatives
| Check method | Testing cycle | Accuracy | Cost range |
|---|---|---|---|
| NT Ultrasound | 11-13 weeks + 6 days | 70-80% | 200-500 yuan |
| Non-invasive DNA | 12-22 weeks | More than 95% | 1500-3000 yuan |
| amniocentesis | 16-22 weeks | 99% | 5000-8000 yuan |
4. Expert advice
1.Prime time window:Strictly control the examination between 11 weeks to 13 weeks + 6 days of pregnancy, and make an appointment 1 week in advance
2.Things to prepare:Eat properly 1 hour before the examination and prepare chocolate and other sweets for later use
3.Mentality adjustment:Failure of a single NT examination does not mean fetal abnormality. According to statistics, 85% of cases can obtain valid data after reexamination.
5. Things to note
• More than 14 weeks requires direct mid-term screening, and NT examination will be meaningless
• Obese pregnant women (BMI>30) are recommended to choose transvaginal ultrasound examination
• When multiple test failures occur, a genetics expert should be consulted promptly
Recent statistics from a tertiary hospital show that through a standardized re-examination process, the final completion rate of NT examinations can reach 97.3%. Pregnant women do not need to be overly anxious, but they need to pay attention to the timeliness of examinations and reasonably plan the time for prenatal examinations.
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