Reasons for Miscarriage



Posted: Tuesday, January 27, 2009

by
http://www.forwomen-health.blogspot.com/

Miscarriage brings up the feelings of depression, disappointment and anxiety. What are the reasons for miscarriage? Read on… A loss of pregnancy before 24 weeks is referred to as a miscarriage. Before 24 weeks gestation, the baby is not able to survive outside the uterus. Miscarriages are also known as spontaneous abortions, as they can occur spontaneously without warning. In most cases, miscarriages occur before the end of first trimester, means before the 12th week of pregnancy. These miscarriages are known as early miscarriages. In some less common cases, miscarriages occur during the second trimester and are known as late miscarriages. A possibility of miscarriage in the third trimester is very rare.

What are the reasons for miscarriages? Some of the physical causes of miscarriage are hormonal imbalance, chromosomal abnormalities and genetic and uterus problems. Early miscarriages may be due to minor trauma, maternal age, environmental factors, sexually transmitted diseases and drug abuse. Chromosomal abnormality is one of the most common reasons of miscarriages. About 70% of first trimester miscarriages result from chromosomal defects. Hormonal imbalance is also responsible for miscarriages in the first trimester. Hormonal imbalance is due to a deficiency of progesterone, which makes the uterine environment less receptive.

Late miscarriages in the second trimester of pregnancy are due to low-lying placenta causing bleeding, incompetent os (weakness of cervical muscles), hydramnios (excessive water) and lifting heavy weights.

Blighted ovum (pregnancy sac without fetus), multiple pregnancy, ectopic pregnancy (pregnancy developed in the fallopian tubes, ovaries or abdomen), problems with cervix and hydatidiform mole are also the reasons for miscarriages. Some other reasons are maternal age, Hughes syndrome, previous miscarriage, infections such as measles, rubella or listeria, fibroids and stress. Smoking, alcoholism, drug abuse are some of the risk factors for miscarriages. Women suffering from diabetes, sexually transmitted diseases and certain autoimmune diseases such as Systemic Lupus Erythematosus are at greater risk for miscarriages.
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