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Doctor insights on: Why Do Ob Docs Measure Cervical Length

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Why do ob docs measure cervical length?

Why do ob docs measure cervical length?

Helps to check: Checking the cervical length give an approximation of how likely you are to still carry the pregnancy and not get close to delivery. If the cervix length is 3cm or more, there is less likely a premature delivery. But this is only a guide. If you start having strong contractions this could change quickly. Also some women go the whole pregnancy with a cervical length of 2cm.

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Dr. David Stamilio
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Cervical Length Measurement (Definition)

Cervical Insufficiency An "insufficient" cervix is a weakened cervix that predisposes a woman to mid-term miscarriage or early (premature) delivery. This has also been called cervical incompetence. If your doctor suspects an insufficient cervix, he or she may suggest an ultrasound to examine the thickness of your cervical tissue. The ultrasound may be performed when you are planning a pregnancy or are in the early stages of a pregnancy. A hysterosalpingogram, or HSG, may also help determine the appearance of the cervical canal ...Read more


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I had my anatomy Scan yesterday @ 22 weeks and was told my cervix was funneling but that my cervix measured 32. Should I be worried about preterm labor? My doc said she will check cervical length again in 4 weeks. I am afraid that that is too long to wait

Its not too worrisom: Despite the funnel, a cervical length of 32 mm is still pretty long, and suggestive that your risk of preterm birth is not substantially elevated. Rechecking it in 4 weeks is reasonable but it is not a strongly dangerous finding. The most important finding is closed length, and a 32 mm length at 22 weeks is fine.

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At 30 weeks. I have a cervix length of 2.6cm. It was about 3cm at 22 weeks. Is this normal? Its closed n firm. OB checking internally weekly till term

At 30 weeks. I have a cervix length of 2.6cm. It was about 3cm at 22 weeks. Is this normal? Its closed n firm. OB checking internally weekly till term

Yes: This is normal. You will have some thinning of the cervix as you get closer to the time of delivery. It is supposed to be closed and firm at 30 weeks, but it is normal if it gets somewhat shorter.

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Hi, I'm 22 weeks preg now. My cervix length is 2.9 cm. My doc has askd me to take progesterone tablets. Should I be worried? Pls help. I'm very tensed.

Hi, I'm 22 weeks preg now. My cervix length is 2.9 cm. My doc has askd me to take progesterone tablets. Should I be worried? Pls help. I'm very tensed.

No: The cervix is a bit shortened and the progesterone is a tool to minimize the risk of further shortening. It sounds like your doctor is on top of things and will watch you closely

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37 weeks pregnant usg acc to period date 38wk. Baby head mobile cervix length 3.7 cm. Doc says this is reason to go for c sec in 38/39 week. Needed? Wait

37 weeks pregnant usg acc to period date 38wk. Baby head mobile cervix length 3.7 cm. Doc says this is reason to go for c sec in 38/39 week. Needed? Wait

Reason for csec?: KhU--what is the reason for the csec? Cervical length is not usually something we do cesareans for--if this is your first baby, you may not "thin out" until the very end. Now, we do not define a term pregnancy until 39 weeks. And post-term or "late" pregnancy is not until 42 weeks. I would advise waiting for now unless there are other indicators that things are wrong with the pregnancy.

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Doc suggests cerclage for cervix as cautionary measure since I am having twins. Is this common?

Doc suggests cerclage for cervix as cautionary measure since I am having twins. Is this common?

NO!: There is no data to suggest that cervical cerclage helps prolong twin or other multifetal pregnancies. Do not listen to anyone telling you otherwise - in fact seek another physician to care for your high-risk pregnancy if your current doctor has this attitude. A maternal-fetal medicine specialist is your best bet. Nothing can prevent preterm birth in twins for more than 48 hours.

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Can you tell me how to find a ob doc that would do a has anyone lost there baby with amniocentesis test 4 DNA reasons?

Can you tell me how to find a ob doc that would do a has anyone lost there baby with amniocentesis test 4 DNA reasons?

Amniocentesis Safety: Rate of loss from amniocentesis is often quoted anywhere between 1/300 to 1/500 and often it has to do with the reason why the amniocentesis is done...If there's suspicion for infection or a genetic problem...The fetus may already be predisposed to stillbirth which could be wrongfully blamed on the amniocentesis. More likely to get fluid leakage with amniocentesis (1%) than fetal loss.

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Could I go back to my ob doc just for pap smears?

Could I go back to my ob doc just for pap smears?

Yes: Obstetricians are also gynecologists. They are very well-trained for that.

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I'm 6months preg. And think I have a virus would it be okay to go to family doc instead of OB or should I go to OB?

I'm 6months preg. And think I have a virus would it be okay to go to family doc instead of OB or should I go to OB?

Family doc: Your family doctor should be capable of handling an illness even while you are pregnant. If treatment is needed or the illness is severe it might be necessary to contact the OB.

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My ob told me its safe to check my own cervix. What should I feel for if all I can make out is swollen tissue?

My ob told me its safe to check my own cervix. What should I feel for if all I can make out is swollen tissue?

Nose consistency: The cervix feels like the end of your nose when inserting a finger in the vagina. It is found in the upper part of the vagina and will cause the uterus to move when pushed side to side or forward and backward. When pregnant the cervix feels like the end of your earlobe.

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In inches how far up does your cervix go? I once had a ob small tampon get lost up their for 2 weeks then slid out on its own. Scary.

Impossible story: This is not what happened. Lost tampons are well known in medicine. They hide or get squished up under the posterior part of the cervix and get forgotten. It is impossible for a cervix to be open in any way for a tampon to get into it.

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Can ob strip membranes or stretch cervix if I am gbs+?

Can ob strip membranes or stretch cervix if I am gbs+?

Usually not best: If you are colonized with gbs, we usually do not "strip" membranes since this could lead to an ascending infection. The good news is that you will receive antibiotics in labor and the risk of obtaining an infection from your gbs presence is very low even with stripped membranes. The current recommendations are to not do it since there have been a few cases of sepsis implicated with this action.

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I went to ob yesterday and he said my cervix is inflamed thought was bacterial cervicitis how did this happen?

I went to ob yesterday and he said my cervix is inflamed thought was bacterial cervicitis how did this happen?

Several options: It could just be an imbalance of the bacteria normally found in the vagina. However, it may also be an std like chlamydia or gonorrhea. Did your doc do cultures?

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If I tore my cervix during aggressive sexual practice who should I see the ER or my oB and it's pretty bad been hurting for months?

If I tore my cervix during aggressive sexual practice who should I see the ER or my oB and it's pretty bad been hurting for months?

I vote for the Ob: My vote is for the Ob-Gyn doctor. A problem that has been happening the same way for many months is not considered an emergency, unless it is something like the chest pain of a heart attack. The ER is for emergencies or suspected emergencies.

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6mo preg. Last U/s at 23wks showed uterine scartissue near cervix ex os+in cervix. Ob says baby will push it out of the way as she grows. Harm bub/me?

6mo preg. Last U/s at 23wks showed uterine scartissue near cervix ex os+in cervix. Ob says baby will push it out of the way as she grows. Harm bub/me?

Not expected: The cervix undergoes dramatic changes during labor and delivery that often is about to change the architecture of scars and allow continued progression to normal labor, aided by the downward pressure of your baby's head. Scar tissue can also be removed in labor if needed.

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What is the difference between an ob/gyn and a fertility doc?

What is the difference between an ob/gyn and a fertility doc?

Training - Services: Fertility docs who are rei trained also provide some services that an ob/gyn doc does not (usually). For example, rei docs offer ivf, icsi, donor egg and surrogacy services that virtually no ob/gyn provides. Rei physicians spend over 90% of their time on fertility disorders unless they are university-based. Rei docs usually handle the most difficult cases too. Hope this helps.

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It's been a month since my C-section and I am having heavy bleefing again is this normal or should I call my ob doc.?

It's been a month since my C-section and I am having heavy bleefing again is this normal or should I call my ob doc.?

First period?: If you are bleeding 4 weeks after then this is most likely your first period coming right on time.

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Dr. Rebecca Thibodeau Khan
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