Recurrent miscarriage
This is defined as three or more miscarriages in a row. It used to be called ‘habitual abortion’ – what a terrible term! Repeated miscarriages are terribly distressing and can lead to sexual problems, marriage breakdown and psychiatric illness, especially depression. In most cases no cause can be found; in others there may be an explanation.
• One or both parents may carry a chromosomal abnormality that prevents foetal survival. All major women’s hospitals have genetic testing facilities and genetic counsellors who can advise about the risk of such an abnormality in future conceptions. Though there isn’t yet any specific treatment for such conditions, if another pregnancy is achieved, foetal chromosome tests can be done. If an abnormal foetus is detected, parents can decide whether or not to continue the pregnancy.
• Immune-system disorders can be associated with recurrent miscarriage. In women with systemic lupus erythematosus (SLE), the most common immune disorder in young women, there is a higher miscarriage rate. In recent years some women who have received treatment for immune disorders have since had a successful pregnancy.
• Uterine abnormalities, such as fibroids or abnormalities of the shape of its cavity, can often be corrected by surgery.
• Incompetent cervix is the most common reason for miscarriage in the second trimester of pregnancy. The cervix, sometimes for no apparent reason and sometimes following tearing during previous labour or surgery, is unable to remain closed to hold the foetus in the uterus. If this has been the reason for previous miscarriage, the cervix may be reinforced with surgical stitches early in the next pregnancy. The suture is removed just before delivery is due.
• Various hormonal problems in early pregnancy used to be considered causes of miscarriage. Recent research suggests that this is rarely the case, and that high levels of luteinising hormone (LH) before conception may be more important in miscarriage in early pregnancy. If too much LH proves a culprit, hormones that will reduce the excess can be given to decrease the risk of miscarriage. The role of hormones in miscarriage is being studied further.
After a miscarriage
Most doctors like to see you about six weeks after a miscarriage. This visit provides a good opportunity to bring up any further questions you may wish to ask. Contact your doctor if you have any unexpected bleeding or fever before your visit is due.
Most women feel low in spirits on arriving home from hospital. This ‘down’ mood may get worse over the next few days, and you may be uncontrollably miserable and weepy for a day or so. Sudden hormonal changes are aggravating your natural sadness after the miscarriage. If you know that your spirits will lift when your next menstrual cycle gets going (usually within a fortnight of the miscarriage), it will help you get through this difficult time. So will the support of your partner, family and friends, so tell them how you’re feeling: pretending you’re ‘taking it well’ to spare others’ feelings will do more harm than good.
You can resume sexual intercourse as soon as you feel like it. If you don’t want to conceive straight away, discuss contraception before leaving hospital. Many women are advised to delay the next pregnancy for several months after a miscarriage. There is no sound reason for this to be a hard and fast rule: it’s something to be decided by you and your doctor, considering the circumstances of your miscarriage.
The disappointment of miscarriage may make you think ‘Never again’, but remember that if it’s happened once you have more than a seven out of ten chance that the next pregnancy will continue, and even in recurrent miscarriage there is 60 per cent chance of a later successful pregnancy.
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