Obstetric dating accuracy adult cheating wives dating websites
Size can be misleading in the presence of multiple pregnancy, uterine fibroids, or a full bladder.
Tape measurement of the symphysis-fundus height may be useful up to 28-30 weeks' gestation, beyond which it becomes too inaccurate for dating.
Knowing the date of the first positive pregnancy test result allows the calculation of a minimum GA. For example, if the test was performed 4 weeks ago and the test is known to return positive results as early as 1 week after conception, then the minimum conceptional age (CA) would be 5 weeks (GA, 5 2 = 7 wk of amenorrhea).
This information can be useful in clinical practice if the test finding has been documented by a health care professional.
In rare cases, the date of coitus is known, and this may be useful in calculating the length of pregnancy.
The 3 basic methods used to help estimate gestational age (GA) are menstrual history, clinical examination, and ultrasonography.
The fallacy in this assumption is that the time of ovulation varies greatly in relation to the menstrual cycle, both from cycle to cycle and individual to individual.