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An intrauterine pregnancy occurs when a fertilized egg implants and starts to develop within the uterus. The uterus is the only viable place a pregnancy can develop and progress to full term. Pregnancies that develop elsewhere within the female reproductive tract are known as ectopic pregnancies are not viable and are a medical emergency.


Intrauterine gestation is a normal finding on a first-trimester ultrasound and means that the pregnancy is taking place inside of the uterus. This is in contrast to ectopic pregnancy that can occur inside of a fallopian tube, ovary, cervix or the abdomen, according to the Mayo Clinic.


The opposite of an intrauterine pregnancy is an extrauterine pregnancy (an ectopic pregnancy) which is "bad." If you are told you have an intrauterine pregnancy - in layman terms it means you have a baby growing inside your uterus (womb).


The gestation of the fetus in an intrauterine pregnancy typically takes from 38 to 42 weeks, with an average of 40 weeks. Although pregnancy is different from one woman to the next, the first signs of pregnancy may include a missed menstrual period, breast tenderness, nausea, vomiting, or fatigue.


What Is the Meaning of an Intrauterine Pregnancy? According to HealthCentral, an intrauterine pregnancy is when a baby grows inside of the uterus, or womb. The definition of intrauterine is "inside the uterus." MedicineNet explains that a pregnancy occurs when the female body carries a developing embryo or fetus. Pregnancy is confirmed through ...


Intrauterine growth restriction (IUGR) refers to a condition in which an unborn baby is smaller than it should be because it is not growing at a normal rate inside the womb. Delayed growth puts ...


intrauterine [in″trah-u´ter-in] within the uterus. intrauterine device (IUD) (intrauterine contraceptive device) a mechanical device inserted into the uterine cavity for the purpose of contraception. These devices are made of metal, plastic, or other substances and are manufactured in various sizes and shapes. Their effectiveness is based on their ...


Intrauterine fetal demise is the clinical term for stillbirth used to describe the death of a baby in the uterus. The term is usually applied to losses at or after the 20th week of gestation.


The gestational sac is normally contained within the uterus. It is the only available structure that can be used to determine if an intrauterine pregnancy exists until the embryo is identified. On obstetric ultrasound, the gestational sac is a dark ("anechoic") space surrounded by a white ("hyperechoic") rim.


In the vast majority of cases, detection of intrauterine pregnancy means that no ectopic pregnancy is present. However, in 1 of 3000 pregnancies, an intrauterine pregnancy, and an ectopic pregnancy may coexist—in other words, a twin pregnancy with one fetus implanted in the uterus and the other in the fallopian tubes.