spontaneous abortion


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Related to spontaneous abortion: induced abortion, missed abortion

spontaneous abortion

[spän′tā·nē·əs ə′bȯr·shən]
(medicine)
An unexpected, premature expulsion of the fetus. Also known as miscarriage.
References in periodicals archive ?
This rates reach up to 14% in national data.2 Due to its high frequency and identification of a small potential for prevention, spontaneous abortion has significant impact on public health.3
We indirectly determined if artificial abortion was a cause of spontaneous abortion of subsequent pregnancy.
Spontaneous abortion is defined as a clinically recognized pregnancy loss before the 20th week of gestation, or an extraction of an embryo weighing 500 g or less.
[14] Few studies have also reported the serum VEGF levels to be significantly higher in recurrent spontaneous abortions in comparison to normal pregnancy.
An improper follow-up, a previous history of spontaneous abortion, a family history of PTBs, height and smoking were the most important risk factors for PTB.
In logistic regression analyses, patients aged 20-24 were more likely than those 35-49 to have certainly had an induced abortion rather than possibly had an induced abortion or had a spontaneous abortion (odds ratio, 2.1).
The VSD findings raise interesting questions about the biologic plausibility of strain-specific risks for spontaneous abortion, and risks of receiving a second vaccine containing the same strain in a subsequent season.
When found in spontaneous abortions, these abnormalities are suggestive of, although not diagnostic for, chromosomal abnormalities; however, little correlation has been made between findings and specific chromosomal anomalies.
They evaluated 485 women who had experienced a spontaneous abortion in 1 of 2 time periods: September 1, 2010 to April 28, 2011 and September 1, 2011 to April 28, 2012.
The World Health Organization (WHO) has defined spontaneous abortion as the loss of a fetus before 20 weeks or that is weighing less than 500 grams (4).
"Although antibiotic use to treat infections has been linked to a decreased risk of prematurity and low birth weight in other studies, our investigation shows that certain types of antibiotics are increasing the risk of spontaneous abortion, with a 60% to two-fold increased risk."
Such changes in vaginal microbial flora have serious consequences such as prevention of fertilization and induction of spontaneous abortion in pregnant women, as well as increased risk of preterm birth and low birth weight [4-8].