Gestational Sac Size Chart By Week In Cm
Gestational sac size is one of the important parameters to monitor during the first trimester of pregnancy. The gestational sac is a fluid-filled structure that surrounds the developing embryo. Its size helps to monitor the growth and development of the embryo. Here is a gestational sac size chart by week in cm.
Week 4-5
During week 4-5 of pregnancy, the gestational sac is usually around 2-3 mm in size. At this stage, the sac is still too small to be seen on an ultrasound. It is only visible through a transvaginal ultrasound.
Week 6
By week 6, the gestational sac should measure between 5-6 mm in size. At this stage, the embryo is still too small to be seen, but the sac is visible on an ultrasound.
Week 7
During week 7, the gestational sac should measure between 10-12 mm in size. This is when the embryo starts to develop limbs, and the yolk sac becomes visible on the ultrasound.
Week 8
By week 8, the gestational sac should measure between 16-18 mm in size. The embryo is now visible on the ultrasound, and its heartbeat can be detected.
Week 9
During week 9, the gestational sac should measure between 22-24 mm in size. The embryo continues to grow, and its body parts become more defined.
Week 10
By week 10, the gestational sac should measure between 30-32 mm in size. The embryo is now fully formed, and its organs start to function.
Week 11-12
During week 11-12, the gestational sac should measure between 40-42 mm in size. This is when the embryo is called a fetus, and its gender can be determined through ultrasound.
Conclusion
Monitoring the gestational sac size during the first trimester of pregnancy is important to ensure the healthy growth and development of the embryo/fetus. The gestational sac size chart by week in cm can be used as a reference to understand the growth pattern of the sac during the first trimester.