Doctor insights on:
Ultrasound At 36 Weeks
Much more than: Later in gestation. First trimester ultrasound is most accurate at estimating gestational age within 5-7 days (depends on the center). It trails off after that. General rule: 2nd trimester scans for dating are +/- 14 days and 3rd trimester is the least accurate (+/-21 days). ...Read moreSee 1 more doctor answer
An ultraound, also known as a sonogram, is a painless and relatively inexpensive imaging test that utilizes sound waves instead of ionizing radiation. There are no side effects. Ultrasound can give us two-dimensional, and in some applications three-dimensional, images of structures and organs in virtually any part of the body. In addition to diagnostic uses, such as evaluating abnormalities in the abdomen, pelvis, and breast, ultrasounds are commonly used to guide needle and catheter placement in a variety of surgical ...Read more
Are transvaginal ultrasounds accurate for dating at 4-5 weeks (only a sac was seen) and at 11 weeks?
Yes: While the dating based on sac size is questionable, it is usually accurate to within a few days--depends on type of ultrasound. An ultrasound at 11 weeks, should be within one week. ...Read more
Prenatal?: If you're asking about a prenatal ultrasound, no not necessarily. If anything, a 10 week ultrasound may give you more detail you may not be able to see in the 6 week ultrasound. However, the 6 week ultrasound is necessary to check on the general wellbeing of that tiny fetus and make sure it is viable. ...Read moreSee 1 more doctor answer
Should be ok: Dating ultrasound scans have good accuracy at 8-11 weeks, so one done at 13 weeks should still be reliable. Dates by ultrasound are always estimates. ...Read more
Plus/ minus 2 weeks: A single ultrasound for dating is only good to estimate gestational age within 10 days to 2 weeks. Serial ultrasounds tend to be much more accurate. ...Read more
Yes, but these are: usually Braxton-Hicks or false labor contractions. Unless you're about ready to go in to labor anyway, they are unlikely to trigger true labor. If your contractions are very strong, you might want to abstain from sex for another week when you'll be at term. Then, in the unlikely event that it does trigger true labor, you're baby should be fine. Best wishes to you! ...Read more
At fertility clinic doing an transvaginal ultrasound tmrw at 6 weeks 2 days for dating and heartbeat....is it to early for heartbeat.
Probably: By the fifth week of the gestation period, the heart starts beating and divides into chambers. So you can hear a baby’s heartbeat at six week gestation. Dr looks out for more than just the heartbeat. He searches for the gestational sac and checks the size of the baby. These measurements will determine the age of the fetus ...Read more
Effacement of 50% at 36 week may not be abnormal. The cervical dilation also need to be known as well.
A first time pregnant mother can be at this stage for several weeks before labor.
For a multigravida mother, she is only one week from 37 weeks which is term. Thus if a pregnant mother goes into natural labor after 37week, they usually do fine and the same with the infant. ...Read more
Ultrasound dating accuracy? An ultrasound at 13 weeks and 3 days would have how many days error tops?
Depends: Assuming the tech measured accurately, probably not more than 3 days. ...Read more
Not likely: Ultrasound dating is quite accurate in the earlier part of pregnancy. While it may be off by 2-3 days it would be highly unlikely to be "wrong" by 2 weeks. Keep in mind that the ultrasound age indicates the number of weeks since the first day of the last menstrual period, not the date of conception. This may explain a two week difference if you arethinking about date of conception. ...Read more
Transvag better: Generally, transvag more accurate as you can get better views (usually). But if thin patient, experienced operator of the ultrasound and good views it can be very accurate. Best of luck. Dr R ...Read more
Maybe: This is in the area of overlap where crl loses accuracy and measuring fetal parts like head diameter is also not as accurate, which is why we like to do sono before 12 or after 14. ...Read more
At 7 weeks pregnant I had an ultrasound. The fetus had a heartbeat of 167. At 8 weeks it still had a heartbeat. At 9 weeks fetal demise happened. Why?
Hard to say: Generally, most miscarriages occur for genetic reasons. Speak to your doctor on the subject. ...Read more
See below: About 7 to 8 days.Get a more detailed answer ›
OK: Dating via ultrasound decreases in accuracy with increasing fetal age. ...Read more
No: Fetal pole is seen on trans vaginal ultrasound starting from week 6 ...Read more
- Talk to a doctor live online for free
- Is transvaginal ultrasound more accurate than a pelvic ultrasound?
- Ultrasound for neck
- 3 month fetus ultrasound
- Ask a doctor a question free online
- Ultrasound shows spot on liver
- Baby boy ultrasound at 12 weeks
- 2 ultrasounds in one week
- Ultrasound at 12 weeks boy
- Talk to a obstetrician and gynecologist online