Types of Miscarriage
There are different types of miscarriage with differing amounts of pain
or severity. All miscarriage is sad and means the loss of your precious
baby. Whatever your situation, even if you are worried and unsure if
you are having a miscarriage you should contact your doctor or hospital.
Going to the hospital and being told you've had a miscarriage at any
time can be a confusing and frightening experience. But when you are
given facts and information that you've never heard of it can be
shocking and it's hard to take in everything you are told.
Unfortunately sometimes too we can come across doctors and nurses who
don't explain things properly and our minds can be racing so much that
we don't ask them to clarify further. We hope some of the explanations
below will go some way to helping you understand your situation. Should
you need further information please contact us.
Complete Miscarriage
This occurs when all the products of conception are passed from the
womb. This type usually occurs before 6-8 weeks of pregnancy or after
14-16 weeks, but rarely in the intervening period. If a complete
miscarriage occurs, particularly after 14 weeks, the woman needs to go
to the hospital for observation. Usually an ultrasound scan will be
carried out to confirm that the womb is empty and that no further
tissues remain inside. Where some tissue remains, the retained products
of conception will need to be removed. This is done by a short
procedure in hospital called an ERCP (or sometimes referred to as a a
D&C) and will be carried out under general anesthetic.
Threatened miscarriage
Occasionally a woman will bleed in pregnancy and have cramping pains
without miscarrying, and will carry the baby to full term. This is not
usually associated with any abnormalities later in the pregnancy or in
the baby.
An inevitable miscarriage
Sometimes if a woman has been threatening to miscarry, the inevitable
will occur, ie. the neck of the womb (the cervix) starts to dilate and
open up. Once this occurs it is unlikely that the pregnancy will be
preserved. Bleeding and pain are common symptoms of this. The pain is
due to contraction of the womb as it tries to evacuate the pregnancy.
Sometimes there can be nausea and vomiting. The woman may notice large
pieces of tissue, which appear like blood clots, being passed from the
vagina. This can be a very frightening experience. An inevitable
miscarriage will either progress to an incomplete or a complete
miscarriage. This situation usually requires hospital admission.
Incomplete miscarriage
Sometimes not all the products of conception are passed from the womb.
This situation is called an incomplete miscarriage. Usually, when the
woman is admitted to hospital an ultrasound scan will be carried out.
If there are remains of tissue present in the womb then the woman will
usually be taken to theatre for an ERPC (see above). The woman is
usually discharged from hospital after a few hours.
Missed miscarriage
In this situation what happens is that the embryo fails to develop
fully and, instead of being passed out of the womb in a miscarriage
situation, it is retained inside. Sometimes the symptoms of pregnancy
such as nausea and breast tenderness will disappear abruptly as the
womb becomes progressively smaller. Often there is no bleeding, but
occasionally the woman may notice a dark brown vaginal discharge. In
this situation an ultrasound examination is needed to confirm that it
is a missed miscarriage. Sometimes there may be no signs at all that
anything is wrong.
There are two options of treatment in this situation. One is to allow
nature to take its course and the woman will inevitably spontaneously
miscarry within the next few weeks. However this may not happen for a
few weeks, and it can be very distressing for a woman in this
situation. Allowing nature to take its course may not be an acceptable
option. The alternative is to carry out an ERPC. This will be carried
out in hospital under general anesthetic. If the womb is larger than 12
weeks a drug called prostaglandin in the form of a vaginal pessary is
inserted near the womb. This helps the woman to spontaneously expel the
retained contents of the womb.
Occasionally, intravenous treatment may also be required. This process
is completed by carrying out a curettage to ensure that no further
tissue remains in the womb. If the womb is less than 12 weeks,
medication is taken beforehand and removal of retained products of
conception occurs under general anesthetic.
Ectopic (or Tubal) Pregnancy
This situation occurs when the fertilised ovum implants outside of the
womb, ie. in a tube or near an ovary. This condition is referred to as
an ectopic pregnancy. Because the embryo will not survive outside of
the womb, it is unfortunately inevitable that this type of pregnancy
will not be viable (also, it can be a difficult condition to diagnose).
Bleeding can often be very heavy and is a very serious event and can be
life-threatening for the woman if she does not seek medical attention.
An ectopic pregnancy is usually confirmed by ultrasound. Usually it
means a laparotomy (operation in the abdomen) to remove the ectopic
pregnancy from the tube. Occasionally it can be difficult to preserve
the tube on the affected side. For further information see link to
Ectopic Pregnany Trust.
Anembryonic Miscarriage (formerly
called Blighted Ovum)
If you have had a miscarriage and your pregnancy loss has been
described as a Anembryonic Miscarriage (or blighted ovum), you may be
shocked and confused. In a pregnancy like this no embryo is seen.
Embryo is the term doctors use for your baby if you are less than 10
weeks pregnant. If you are diagnosed with anembryonic miscarriage
this means that, following ultrasound, your doctor saw the tissue which
would have formed the afterbirth in your womb and the pregnancy fluid
but no embryo. (This can also be diagnosed following pathology in the
laboratory) This does not mean that there was no embryo. The embryo is
most likely to have died very early in the pregnancy and would have
been reabsorbed into the body early in it's development. Most
embryos which are lost this way, would have had severe chromosomal
abnormalities and therefore, could never thrive. Anembryonic
Miscarriage is typically detected between 8 and 11 weeks into your
pregnancy. A D&C is usually necessary in this case.
It may be difficult to take in all the information which is presented
to you by medical staff at a time like this. However, you should feel
free to ask anything you feel you want to know. In most hospitals, you
will be offered a follow-up appointment. Take time to formulate your
questions, express you worries and get advice. Sometimes talking to
another woman who has suffered Anembryonic Miscarriage can also be of
great help.
Hydatidiform Mole
This is a rare form of failed pregnancy in which the placenta starts to
grow very abnormally and the embryo dies. Despite this, the placenta
continues to grow in a disorganised way, becoming so distended with
cysts that it resembles a bunch of grapes ("hydatidiform" meaning
blistery and "mole" meaning growth). Going to the hospital and being
told you've had a miscarriage at any time can be a confusing and
frightening experience. But when you are given facts and information
that you've never heard of it can be shocking and it's hard to take in
everything you are told. Unfortunately sometimes we can come across
doctors and nurses who don't explain things properly and our minds can
be racing so much that we don't ask them to clarify further.
In effect, the pregnancy is replaced by a benign tumour of the
placenta. For the one in 2,000 pregnant women who get this condition,
the first signs are usually vaginal bleeding, a larger than expected
womb and severe symptoms of pregnancy, especially morning sickness.
These symptoms are all due to the production of excessive amounts of
the pregnancy hormone – Human Chorionic Gonadotrophin.
The condition is detected by an ultrasound scan and urine hormone
tests. The treatment is to terminate the pregnancy as soon as possible,
although in cases like this it happens spontaneously as a miscarriage.
As a follow up you may have a urine test to ensure the "mole" was
removed and isn't regrowing.There is a slight risk of it happening
again with another pregnancy. To reduce this risk, women are usually
advised to avoid becoming pregnant again for a year.
Recurrent miscarriage
Recurrent miscarriage is diagnosed when there have been three
consecutive pregnancies which end in spontaneous miscarriage. It is a
very distressing situation and is poorly understood. Causes can include
abnormalities of the uterine cavity, such as fibroids or intra-uterine
adhesions. Cervical incompetence, where the cervix dilates and cannot
retain the pregnancy, may also be a reason. Infections in the mother
account for 15% of recurrent miscarriages. Abnormal development of the
foetus and hormonal problems account for approximately 3%. Even though
it can be a very depressing situation the probability of achieving a
successful outcome in subsequent pregnancies is still more than 50%.
For further information see link for St. Mary's Recurrent Miscarriage
Clinic, London.
Stillbirth
This is technically any pregnancy that ends after the 20th week and the
baby does not survive. Some babies die in utero and are discovered when
the heartbeat is not found. The most common causes of this are: uterine
abnormalities, a knot or other umbilical cord accident, infections of
the lining of the gestational sac or cord, and placental abruptions
that cause the placenta to pull away from the uterine wall. These
babies are usually born through the induction of labor, although some
babies are small enough to be taken by D&C procedures. For further
information on Stillbirth please follow our link to Irish Stillbirth
& Neonatal Death Society - ISANDS.
Regardless of how your miscarriage has happened or how many weeks you
had carried your baby for we can and should never compare one persons
loss to another. No one can judge the intensity of our grief or our
feelings for our lost baby except ourselves. Everyone is different, and
one parent's grief may be as painful as another's, regardless of the
circumstances.
PLEASE NOTE
The information provided on this site is simply to provide an over-view
of possible causes for your personal use and is NOT intended as a
replacement for medical advice, diagnosis or treatment. It is a general
guideline and treatments and opinions can differ between medical
practitioners and for individual cases. It is NOT advisable to take any
medications or start any treatments without consulting your doctor or
specialist practitioner. The Miscarriage Association of Ireland assumes
no liability or responsibility for any consequences resulting from the
use of any information contained in this site or from any organisations
mentioned in this site, including but not limited to errors or
omissions, accuracy of information, studies or conclusions. The
Miscarriage Association of Ireland is not responsible for, and
disclaims all liability for, damages of any kind arising out of use,
reference to, or reliance on such information. The Miscarriage
Association of Ireland does not endorse or recommend any medications,
products, treatments, services, brandnames, manufacturers,
practitioners or otherwise which may be mentioned anywhere in this site.