Grow Youthful: How to Slow Your Aging and Enjoy Extraordinary Health
Grow Youthful: How to Slow Your Aging and Enjoy Extraordinary Health

Miscarriage

What is a miscarriage?

Symptoms of miscarriage

Risk factors for miscarriage

Causes of miscarriage

Prevention of miscarriage

References

What is a miscarriage?

Miscarriage is the natural loss of a foetus before it is able to survive outside the mother. A miscarriage may be called a "spontaneous abortion", versus an "induced abortion" for the termination of a pregnancy. A stillbirth is a foetus that died before normal birth but after viable gestational age.

About half of all fertilised eggs are aborted spontaneously, usually before the woman even knows she is pregnant. (6) Between 65-75% of miscarriages occur during the first 12 weeks of pregnancy, with most of them during the first 7 weeks. The total miscarriage rate is about 15-20% among those women who know they are pregnant. The rate of miscarriage falls after the baby's heart beat is detected. (2)

A miscarriage can be confirmed with an ultrasound and by the examination of blood and tissue passed from the vagina.

Most (early) miscarriages need no treatment. Even when a miscarriage has been diagnosed, 65-80% of cases need no treatment other than observation. (5) Most tissue will pass within 2-6 weeks, but in the case of incomplete abortion, drugs such as misoprostol (a prostaglandin, brand name Cytotec) or surgical treatment called dilation and curettage (D&C) may be necessary.

Foetuses born before 24 weeks of gestation rarely survive, and those that do may be negatively affected for life.

Symptoms of miscarriage

Risk factors for miscarriage

Causes of miscarriage

Prevention of miscarriage

References

1. Everett C. Incidence and outcome of bleeding before the 20th week of pregnancy: Prospective study from general practice. 1997. BMJ 315 (7099): 32-4. doi:10.1136/bmj.315.7099.32. PMC 2127042. PMID 9233324.

2. Susan Storck. 8 November 2012.
www.nlm.nih.gov/medlineplus/ency/article/001488.htm

3. Kajii, T; Ferrier, A; Niikawa, N; Takahara, H; Ohama, K; Avirachan, S. Anatomic and chromosomal anomalies in 639 spontaneous abortuses. 1980. Human genetics 55 (1): 87-98. doi:10.1007/BF00329132. PMID 7450760.

4. Bray, I.; Gunnell, D; Davey Smith, G. Advanced paternal age: How old is too old? 2006. Journal of Epidemiology & Community Health 60 (10): 851-3. doi:10.1136/jech.2005.045179. PMC 2566050. PMID 16973530.

5. Kripke C. Expectant management vs. surgical treatment for miscarriage. 2006. American Family Physician 74 (7): 1125-6. PMID 17039747.

6. Ammon Avalos, L; Galindo, C; Li, DK. A systematic review to calculate background miscarriage rates using life table analysis. June 2012. Birth defects research. Part A, Clinical and molecular teratology 94 (6): 417-23. PMID 22511535.