Doctor insights on:
Ultrasound In Third Trimester
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
Early Ultrasounds: Actually they are thought to be the most accurate. ...Read more
Do transvaginal US have the same margin of error as abdominal US in the dating pregnancy the first trimester?
Slightly less: Transvaginal sonograms are slightly more accurate in the early first trimester. Either way the margin of error is only about 3-5 days. ...Read more
What changes a due date? And why is the first trimester ultrasound more accurate than the second trimester ultrasound?
Ultrasound dating.: First trimester ultrasound is by far the most accurate in determining the precise due date (+/- 3-7 days, depending on exactly when it is performed). Second trimester sonograms are less accurate but still helpful in pegging down the due date within +/-7-12 days. Third trimester scans are not very accurate in dating the pregnancy, as growth varies (+/- 14-21 days). Menstrual dating is not very good. ...Read more
Early Ultrasounds: The early ultrasounds are considered the most accurate. ...Read more
Not sure: I am not sure i understand the question. Palpitations can occur at specific times such as late at night when you are lying down. Or they can occur after drinking coffee or alcohol. In some cases they are more common during or after exercise. Sometimes the timing helps us in treatment. (if they always occur after alcohol for instance). Then you could mean how long they last, (momentary or hours). ...Read more
See your doctor: Symptoms like these have to be evaluated in real-time by your physician. He/she has access to your examination, laboratrory data and many other diagnostic tests to get to the bottom of what's going on and offer you help. ...Read more
Maybe, maybe not: It is not uncommon to experience cramping and light bleeding early on during pregnancy. Infections of the bladder or cervix may also be a cause. Ectopic pregnancy, a potentially life-threatening complication also causes cramping early in pregnancy. Please see your doctor to be evaluated for these conditions. ...Read moreSee 1 more doctor answer
Off?: Depends what you mean by 'off.' the theoretical accuracy of a 1st trimester us is considered to be +/- 2-3 days, so in that sense they are always 'off.' if you mean wrong, as in more than 2-3 days, no one knows this - but with a skilled sonographer and a current us machine, it shouldn't be off by more than a few days very often. ...Read more
Yes: Chorionic villus sampling (cvs) is done in the first trimester between 10-12 weeks. It has a slightly higher risk of miscarriage associated with it than an amniocentesis- which is usually done after 15 weeks- because it is performed earlier in the pregnancy. Blood tests and a nuchal translucency ultrasound are noninvasive genetic screening options. ...Read moreSee 1 more doctor answer
Yes: Vaginal bleeding in the third trimester is never normal and always requires immediate evaluation by a doctor. There are many different causes that only a physical exam can detect. Bleeding can be from the placenta, which is the nutrition source for your baby. ...Read moreSee 2 more doctor answers
Tell OBs more please: Please tell us a bit more about the pregnancy, risk factors, reason for progesterone. You may add that information as a separate question or as part of comments. In the meantime i will refer this to some OB specialists for additional input. Thanks for asking this interesting question. ...Read moreSee 1 more doctor answer
IT INCREASES: Your Progesterone levels are very high when you are pregnant. With twins even higher. Your corpus luteum (the remainder of the cyst that formed your egg, then released it) continuous to produce Progesterone until the placenta takes over. When you are having two babies the levels are usually higher. You can have some side effects from this (bloating, constipation, gassiness, breasttenderness). ...Read more
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