Importance of group B streptococcus (GBS) test in pregnant women

This is an automatically translated article.

Group B streptococcus (GBS) is a type of bacteria that can be found in the vagina and rectum of pregnant women. This bacteria is also present in the vagina and rectum of 25% of healthy women. While the bacteria are harmless to the carrier, if left untreated, it can be passed to the baby during childbirth.

1. Subjects to be tested for Streptococcus B


Group B strep testing is done for all pregnant women. If you're a carrier of GBS, you won't have any symptoms (it's not related to strep A, the type that causes throat infections) - which means you won't know you're a carrier.
That has the potential to cause trouble until delivery, because a baby who gets GBS during birth is at risk for serious infection (although only one in 200 babies is born to a GBS-positive mother. ).
But as long as you are given IV antibiotics during labor, any risk to your baby is completely eliminated. If your doctor doesn't offer GBS testing in late pregnancy, ask for it.

Xét nghiệm GBS cho bà bầu được thực hiện cho tất cả phụ nữ đang mang thai
Xét nghiệm GBS cho bà bầu được thực hiện cho tất cả phụ nữ đang mang thai

2. When to test for GBS for pregnant women?


This test is usually done between 35 and 37 weeks of pregnancy (testing before 35 weeks is not accurate in predicting who will carry GBS at the time of labor).

Trắc nghiệm: Xét nghiệm Triple test là gì? Cần thực hiện khi nào?

Triple test và một trong những xét nghiệm sàng lọc trước sinh quan trọng nhất trong thai kỳ, giúp chẩn đoán nguy cơ dị tật thai nhi, là cơ sở để các bác sĩ chỉ định thực hiện các xét nghiệm sàng lọc xâm lấn như chọc ối, sinh thiết gai nhau. Theo dõi bài viết sau để biết Triple test là gì và nên thực hiện khi nào?

Some hospitals and birthing centers offer a rapid GBS test that can screen women during labor and provide results within an hour, replacing a few weeks before. Ask your doctor if that is an option at the facility where you will be accommodated.
If you've had a baby with GBS in the past, your doctor may skip the test and start treatment during labor.
And even if you weren't tested but were born with some risk factors associated with group B strep (premature birth, rupture of membranes earlier than 18 hours before birth, or fever during labor), your doctor Your doctor will show you IV Antibiotics to make sure you don't infect your baby.

3. How is the strep B test done?


During the pelvic exam, your doctor will test for group B strep during pregnancy by taking a separate swab of your vagina and a swab of your rectum. The swabs will be sent to a lab for analysis.
GBS may also be present in urine cultures obtained during prenatal testing. If it does, it will be treated immediately with oral antibiotics and again in labor with IV antibiotics.

Các bước thực hiện xét nghiệm strep B
Các bước thực hiện xét nghiệm strep B

4. What if I test positive for Group B Streptococcus?


If the vaginal discharge test results are positive for GBS, this simply means that you are a healthy carrier.
Not all babies born to a mother who test positive for GBS will be infected. About 1 in 200 infants born to mothers who have Group B Streptococcus infection and are not treated with antibiotics will develop signs and symptoms of Group B Strep infection. However, there are symptoms that may indicate You have a higher risk of having a baby with Group B Streptococcus.
These symptoms include :
Water breaks prematurely before 37 weeks Water breaks prematurely 18 hours or more before delivery Fever during labor Urinary tract infection with Group B Streptococcus during pregnancy History of previous birth Here the baby has Group B Streptococcus In this case, your doctor will use antibiotics to protect your baby from Group B Streptococcus at birth.
Vinmec International General Hospital is one of the hospitals that not only ensures professional quality with a team of leading medical doctors, modern equipment and technology, but also stands out for its examination and consultation services. comprehensive and professional medical consultation and treatment; civilized, polite, safe and sterile medical examination and treatment space. Customers when choosing to perform tests here can be completely assured of the accuracy of test results.

Please dial HOTLINE for more information or register for an appointment HERE. Download MyVinmec app to make appointments faster and to manage your bookings easily.

Article referenced source: Vietnam Pasteur Institute
Share
Patients Stories