The placenta is a transitional organ formed during mammalian gestation through the union of embryonic membranes and maternal uterine endometrium, facilitating maternal-fetal exchange. The fetus develops within the uterus, relying on the placenta to obtain nutrients from the mother while maintaining independence. If the umbilical cord attaches to the placental periphery, resembling a tennis racket, it is termed a racket-shaped placenta.Racquet-shaped placentas are relatively uncommon with a low incidence rate, yet they pose significant hidden risks to pregnant women.
What is a Racquet-Shaped Placenta?
The placenta is a transitional organ formed during pregnancy in mammals by the fusion of the fetal membranes and the maternal uterine endometrium. It facilitates the exchange of substances between mother and child. The fetus develops within the uterus, relying on the placenta to obtain nutrients from the mother while maintaining independence for both parties.This underscores the placenta's vital importance to the fetus, explaining why expectant parents pay such close attention to this topic. Here, we discuss the specifics of a racket-shaped placenta.
As the name suggests, a racket-shaped placenta resembles a tennis racket in form. A normal placenta is round or oval, with the umbilical cord attached to the fetal side of the placenta, positioned between the edge and the center.When the umbilical cord attaches to the placental periphery, forming a racket-like configuration, it is termed a racket-shaped placenta. This condition is relatively rare, occurring in 0.1% to 15% of cases, and is classified as an abnormal cord insertion. Diagnosis prior to placental delivery is challenging.The condition itself holds no significant clinical importance. During delivery, marginal cord insertion generally does not threaten maternal or fetal life and is typically discovered during postpartum placental examination. However, if the insertion point coincides with the lower edge of the placenta near the cervix, it may be compressed by the fetal presenting part, potentially causing fetal distress or even death.
Causes of Racquet-Shaped Placenta Formation
Having understood the fundamentals of racquet-shaped placenta, we recognize its relatively low incidence rate yet potential risks to fetal delivery. Therefore, we must strive to minimize its hazards by comprehending its formation mechanisms.A normal placenta is round or oval in shape, with the umbilical cord attached to the fetal side of the placenta, positioned between the edge and the center. If the umbilical cord attaches to the edge of the placenta, giving it a racket-like appearance, it is termed a racket-shaped placenta. While a racket-shaped placenta is classified as a placental developmental abnormality, its exact cause remains unclear. Generally, it does not affect blood supply. As long as ultrasound scans show no significant issues with the fetus, there is no need for concern, as most fetuses develop normally.A normal placenta is round or oval in shape, with the umbilical cord attached to the fetal side of the placenta, positioned between the edge and the center. If the umbilical cord attaches to the edge of the placenta, resembling a tennis racket, it is termed a racket-shaped placenta. The racket-shaped placenta itself has no clinical significance. During delivery, cord attachment at the edge generally does not affect the life of the mother or fetus and is typically discovered during the postpartum placental examination.
Precautions for Racetac Placenta
Racetac placenta is a special placental configuration where the umbilical cord attaches to the placental edge without causing cord rupture. There is no need for excessive concern. During routine care, avoid strenuous physical labor and maintain emotional stability.Importantly: While this placental type poses no risk to the baby during pregnancy, it increases the risk of umbilical cord compression during delivery, potentially causing fetal hypoxia, ischemia, and asphyxia. Therefore, regular prenatal checkups are essential to inform your healthcare provider about your condition and determine the appropriate delivery method.A racket-shaped placenta may have reduced blood supply, potentially affecting embryonic development. While generally not a major concern, it is recommended that pregnant women rest in the left lateral position, monitor fetal movements, and undergo regular check-ups. During delivery, inform the attending physician to avoid excessive traction on the umbilical cord, preventing its rupture.A spatulate placenta itself holds no clinical significance. During delivery, marginal cord insertion generally poses no threat to maternal or fetal life and is typically identified during postpartum placental examination. However, if the cord insertion point lies near the placental edge close to the cervix, it may be compressed by the fetal presenting part, potentially causing fetal distress or even death.Our Guidance: Tennis ball placenta is relatively rare, occurring at a rate of 0.1% to 15%. It is classified as an abnormal umbilical cord attachment and is difficult to diagnose before placental delivery. The placental condition does not affect vaginal delivery. Close observation during labor is essential. Therefore, expectant mothers should consume ample vegetables and fruits and engage in appropriate exercise.
Preventing a Tapered Placenta
A tapered placenta refers to the umbilical cord attaching to the edge of the placenta. During pregnancy and delivery, it is less prone to compression and rupture. However, if the cord attachment point is located in front of or to the side of the presenting part, painless intrauterine bleeding may occur during labor as cervical dilation and membrane rupture damage the umbilical vessels or the edge of the tapered placenta.This condition does not affect future pregnancies, but preconception preparation for optimal fetal development is recommended, including regular prenatal checkups. Generally, it poses no significant concerns. The optimal sleeping position for pregnant women is lying on the left side, particularly during the later stages of pregnancy. This position reduces pressure from the pregnant uterus on the aorta and iliac arteries, helping prevent lower limb edema, varicose veins, and fetal growth restriction.During pregnancy, the sleeping position significantly impacts fetal growth and development. In the first trimester (months 1-3), the fetus remains within the maternal pelvic cavity, minimizing direct external or self-imposed pressure. Thus, any comfortable position—such as supine or lateral—is acceptable. However, in the second and third trimesters, lateral positioning is preferable, as supine sleeping offers no benefits for either mother or baby.Many people know that rest is important during pregnancy, especially afternoon naps, but are unaware that sleeping position also requires attention in the later stages. The optimal sleeping position for a pregnant woman is lying on her left side, particularly during the third trimester. This position reduces pressure from the pregnant uterus on the aorta and iliac arteries, maintaining normal blood flow and ensuring adequate placental perfusion. It helps prevent conditions such as lower limb edema, varicose veins, and fetal growth restriction.If prolonged left-side lying is difficult, place a blanket, pillow, or quilt under the right hip while lying flat to tilt the pelvis leftward. This achieves the same effect as left-side lying.
Can a racket-shaped placenta allow for vaginal delivery?
Whether a racket-shaped placenta affects delivery primarily depends on the location of the umbilical cord attachment at the placental edge. If it is positioned directly above the cervical canal and the presenting part of the fetus compresses this area, it may impact labor progression and requires attention.Expert guidance indicates that a racket-shaped placenta itself holds no specific clinical significance. It is recommended to closely monitor the relationship between the umbilical cord and the presenting part of the fetus, checking for any compression of the cord or presenting part. If abnormalities are detected, a cesarean section is advised for safety. A spherical placenta is classified as a placental developmental anomaly, though its cause remains unclear. It generally does not affect blood supply. As long as ultrasound shows no obvious fetal issues, there is no need for concern, as most fetuses develop normally.Whether a placenta accreta affects delivery primarily depends on the location of the umbilical cord attachment at the placental edge. If it is positioned directly above the cervical canal and the presenting part compresses this area, it may impact labor progression and requires attention. If abnormalities are present, a cesarean section is recommended for safety.