THITINAN TANSATHIT, M.D.
Obstertrics and Gynaecology Maternal Fetal Medicine
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Fetal Health Checkup
Expectant mothers typically begin to feel fetal movements between the 16th and 20th weeks of pregnancy. Initially, these movements may feel like a gentle tapping sensation, similar to a fish nibbling inside the abdomen, or light muscle twitches. As the pregnancy progresses, fetal movements will include kicks, punches, rolls, and somersaults.
In the initial stages, fetal movements are subtle and infrequent. However, as the pregnancy enters the second trimester (4-6 months gestation), the baby will move more actively, making movements more noticeable and frequent for the mother. At this stage, the fetus is still relatively small, and there is ample amniotic fluid, so the mother may not feel every movement. Simply ensuring that the baby moves every day is sufficient.
After 28 weeks of pregnancy, fetal movements become more distinct. It is important to monitor fetal movement during periods when the baby is typically most active. To do this, the mother should sit or recline in a comfortable position, ensuring the baby is positioned close to her body. The fetal movements should be counted over two hours, during which there should be at least eight movements.
If the baby moves fewer than eight times within this timeframe, medical attention should be sought for further evaluation. It is recommended that fetal movements be counted daily until delivery. Another method is to count movements within one hour after a meal, with a minimum of four movements per hour.
After 24 weeks of pregnancy, fetal movement can be safely encouraged using simple methods:
The baby’s sleep-wake cycle typically lasts 20-40 minutes, after which they will resume activity. If fetal movement is not detected, the mother should monitor movements for another hour.
Certain medications, such as antihistamines, decongestants, or muscle relaxants, may cause fetal drowsiness.
Reduced movement may indicate issues such as oxygen deprivation, umbilical cord compression, intrauterine growth restriction (IUGR), or low amniotic fluid levels. If fetal movement is significantly reduced, immediate medical attention is required.
For further monitoring of fetal development, 4D ultrasound scans can provide detailed insights at every stage of pregnancy.
Monitoring fetal movements is crucial, as it reflects the baby’s overall well-being. Expectant mothers should prioritize daily fetal movement tracking to ensure the health and safety of their unborn child.
Obstertrics and Gynaecology Maternal Fetal Medicine