How can I calculate my gestational age?
How can I calculate my gestational age?
How can I calculate my gestational age?
In cases where the date of conception is known precisely, such as with in vitro fertilization, the EDD is calculated by adding 266 days to the date of conception. Ultrasound uses the size of the fetus to determine the gestational age (the time elapsed since the the first day of the last menstrual period).
Does subclinical hyperthyroidism affect pregnancy?
Subclinical hyperthyroidism is not associated with adverse outcomes in pregnancy. Among the long-term consequences of subclinical hyperthyroidism is progression to overt hyperthyroidism, which has adverse effects on pregnancy outcomes.
How do you calculate weeks of amenorrhea?
First, determine the first day of your last menstrual period. Next, count back 3 calendar months from that date. Lastly, add 1 year and 7 days to that date.
What is the normal range of TSH in pregnancy?
TSH levels during pregnancy
| Stage of pregnancy | Normal | Low |
|---|---|---|
| First trimester | 0.6–3.4 mU/L | < 0.6 mU/L |
| Second trimester | 0.37–3.6 mU/L | < 0.3 mU/L |
| Third trimester | 0.38–4.0 mU/L | < 0.3 mU/L |
What is fetal age vs gestational age?
Gestational age vs fetal age While gestational age is measured from the first day of your last menstrual period, fetal age is calculated from the date of conception. This is during ovulation, which means that fetal age is about two weeks behind gestational age. This is the actual age of the fetus.
Should subclinical hyperthyroidism be treated in pregnancy?
Treatment is generally not required for subclinical hyperthyroidism in pregnancy. In fact, most instances of a low TSH in early pregnancy are not pathological and are due to TSH suppressive effects of β-human chorionic gonadotrophin (β-HCG).
How is subclinical hyperthyroidism treated in pregnancy?
In nonpregnant women, the American Thyroid Association recommends an initial daily dose of 100-600 mg for PTU or 10-40 mg for methimazole. The goal of treatment during pregnancy is to maintain free-T4 in the upper normal range using the lowest possible dose of thioamide (see Figure 2).