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A heterotopic pregnancy is a complication of pregnancy in which both extrauterine pregnancy and intrauterine pregnancy occur simultaneously. [2] It may also be referred to as a combined ectopic pregnancy, multiple‑sited pregnancy, or coincident pregnancy. The most common site of the extrauterine pregnancy is the fallopian tube.
The greatest risk factors are an abnormal position of the baby within the uterus and a premature or small baby. [2] Other risk factors include a multiple pregnancy, more than one previous delivery, and too much amniotic fluid. [2] [3] Whether medical rupture of the amniotic sac is a risk is controversial.
Multimorbidity is common in older adults, estimated to affect over half of those aged 65 and over. This increased prevalence has been explained by older adults' "longer exposure and increased vulnerability to risk factors for chronic health problems". [2] The prevalence of multimorbidity has been increasing in recent decades.
Several contributors may result in placental abruption. This includes: pre-existing maternal factors (e.g., smoking, hypertension, advanced age), [51] as well as pregnancy-related factors such as multiple pregnancies or the presence of in-utero infections. Identifying risk factors beforehand in order to take steps and make quick reactions to ...
A high-risk pregnancy is a pregnancy where the mother or the fetus has an increased risk of adverse outcomes compared to uncomplicated pregnancies. No concrete guidelines currently exist for distinguishing “high-risk” pregnancies from “low-risk” pregnancies; however, there are certain studied conditions that have been shown to put the mother or fetus at a higher risk of poor outcomes. [1]
Recurrent miscarriage or recurrent pregnancy loss (RPL) is the spontaneous loss of 2-3 pregnancies that is estimated to affect up to 5% of women. The exact number of pregnancy losses and gestational weeks used to define RPL differs among medical societies. [1]
A multiple pregnancy may be the result of the fertilization of a single egg that then splits to create identical fetuses, or it may be the result of the fertilization of multiple eggs that create fraternal ("non-identical") fetuses, or it may be a combination of these factors. A multiple pregnancy from a single zygote is called monozygotic ...
Post-maturity is more likely to happen when a mother has had a post-term pregnancy before. After one post-term pregnancy, the risk of a second post-term birth increases by 2 to 3 times. [8] Other, minor risk factors include an older or obese mother, a white mother, male baby, or a family history of post-maturity. [9]