Blighted Ovum
A blighted ovum, also known as an anembryonic pregnancy, is one of the most common causes of miscarriage during the first trimester of pregnancy. Receiving this diagnosis can be emotionally difficult, especially for couples who have been trying to conceive.
Although a blighted ovum results in pregnancy loss, it is important to understand that it is usually caused by chromosomal abnormalities beyond the parents’ control and is not the result of something the mother did or failed to do.
This article explains what a blighted ovum is, its causes, symptoms, diagnosis, treatment options, and what it means for future pregnancies.
Medically Reviewed By
Scientist Shuaibu Omoko, the
Founder of Omokos Diagnostics and Clinical Services LTD.
Medical laboratory educator and healthcare entrepreneur with extensive experience in diagnostic laboratory services.
Editorial Note: This article has been reviewed for scientific accuracy and educational value. It is intended for patient education and should not replace advice from a qualified obstetrician, gynecologist, or other healthcare professional.
What Is a Blighted Ovum?
A blighted ovum, medically known as an anembryonic pregnancy, occurs when a fertilized egg implants in the uterus and a gestational sac develops, but the embryo either never forms or stops developing at a very early stage.
The pregnancy hormone (hCG) may continue to rise for a period, meaning pregnancy tests are often positive and early pregnancy symptoms may still occur.
Because the gestational sac continues to grow initially, many women do not realize that the pregnancy is not developing normally until an ultrasound examination is performed.
Is a Blighted Ovum a Miscarriage?
Yes.
A blighted ovum is considered an early pregnancy loss. It is one of the leading causes of miscarriage during the first trimester.
In many cases, the body eventually recognizes that the pregnancy is not viable and miscarriage occurs naturally. In other cases, medical treatment or a minor surgical procedure may be recommended.
What Causes a Blighted Ovum?
The most common cause is chromosomal abnormalities that occur when the fertilized egg divides.
These genetic abnormalities usually happen by chance and prevent the embryo from developing normally.
Other possible contributing factors include:
- Poor egg quality
- Poor sperm quality
- Random genetic errors during fertilization
- Rare chromosomal abnormalities inherited from one parent
Most cases are not caused by exercise, sexual intercourse, emotional stress, travel, or lifting everyday objects.
Risk Factors
Although a blighted ovum can occur in any pregnancy, certain factors may increase the risk, including:
- Increasing maternal age
- Previous miscarriage
- Certain chromosomal abnormalities
- Poor egg quality associated with age
Having one blighted ovum does not necessarily mean it will happen again.
Symptoms of a Blighted Ovum
Early pregnancy symptoms may appear normal because pregnancy hormones are still produced.
Symptoms may include:
- Missed menstrual period
- Positive pregnancy test
- Breast tenderness
- Nausea or morning sickness
- Fatigue
As the pregnancy stops developing, symptoms may include:
- Vaginal spotting
- Vaginal bleeding
- Lower abdominal cramps
- Passage of tissue
- Gradual disappearance of pregnancy symptoms
Some women have no symptoms until an ultrasound examination.
How Is a Blighted Ovum Diagnosed?
The diagnosis is usually made using pelvic ultrasound together with the patient’s medical history and, in some cases, serial blood tests measuring human chorionic gonadotropin (hCG).
During the ultrasound, the sonographer may observe:
- A gestational sac within the uterus.
- Absence of a visible embryo when one would normally be expected based on gestational age.
- Absence of fetal cardiac activity because no embryo has developed.
To avoid diagnosing a normal early pregnancy as a miscarriage, healthcare providers follow established ultrasound criteria and may recommend a repeat scan after several days if the findings are uncertain.
Can Ultrasound Detect a Blighted Ovum?
Yes.
Ultrasound is the primary imaging method used to diagnose a blighted ovum.
A transvaginal ultrasound often provides the clearest images during very early pregnancy because it allows better visualization of the gestational sac and developing embryo.
In some situations, a repeat ultrasound may be recommended to confirm the diagnosis before treatment decisions are made.
Treatment Options
Treatment depends on your symptoms, ultrasound findings, and personal preferences.
1. Expectant Management
Some women choose to wait for the miscarriage to occur naturally under medical supervision.
2. Medication
Your healthcare provider may prescribe medication to help the uterus expel the pregnancy tissue.
3. Surgical Management
A procedure known as dilatation and curettage (D&C) or vacuum aspiration may be recommended if:
- Heavy bleeding occurs.
- The miscarriage does not complete naturally.
- Infection is suspected.
- The patient prefers surgical management.
The most appropriate treatment should be discussed with a qualified healthcare professional.
Can You Become Pregnant Again?
Yes.
Most women who experience a blighted ovum go on to have healthy pregnancies in the future.
Your healthcare provider may advise waiting until you have physically and emotionally recovered before trying to conceive again.
If recurrent pregnancy loss occurs, additional medical evaluation may be recommended.
Can a Blighted Ovum Be Prevented?
Unfortunately, most cases cannot be prevented because they result from random chromosomal abnormalities.
However, maintaining good general health before pregnancy may support reproductive health.
Helpful habits include:
- Eating a balanced diet.
- Taking folic acid before conception as recommended.
- Avoiding smoking.
- Limiting alcohol.
- Managing chronic medical conditions.
- Attending regular antenatal care.
Frequently Asked Questions
Did I cause the blighted ovum?
In most cases, no.
A blighted ovum usually results from chromosomal abnormalities that occur by chance during fertilization and are beyond your control.
Can a blighted ovum have a heartbeat?
No.
Because the embryo does not develop normally, there is no fetal heartbeat.
Can pregnancy symptoms continue?
Yes.
Pregnancy hormones may continue to be produced for some time, so symptoms such as nausea and breast tenderness may persist temporarily.
Will this affect future pregnancies?
For most women, no.
Having one blighted ovum does not usually reduce the chances of having a healthy pregnancy in the future.
When Should You Seek Immediate Medical Care?
Seek urgent medical attention if you experience:
- Heavy vaginal bleeding (soaking through pads rapidly)
- Severe abdominal pain
- Fever or chills
- Foul-smelling vaginal discharge
- Dizziness or fainting
These symptoms may indicate complications requiring prompt medical evaluation.
Conclusion
A blighted ovum is one of the most common causes of early pregnancy loss. Although the diagnosis can be emotionally challenging, it usually results from random chromosomal abnormalities rather than anything the parents did wrong.
Ultrasound plays a vital role in confirming the diagnosis and guiding appropriate care. Most women who experience a blighted ovum are able to have healthy pregnancies in the future with appropriate medical follow-up and support.
If you have concerns about an early pregnancy or experience bleeding or abdominal pain, seek prompt evaluation from a qualified healthcare provider.
Early Pregnancy Ultrasound at Omokos Diagnostics
At Omokos Diagnostics, we provide high-quality Early Pregnancy Ultrasound, Pelvic Ultrasound, Obstetric Ultrasound, and comprehensive laboratory services to support the diagnosis and monitoring of early pregnancy. Our qualified sonographers use modern ultrasound equipment to provide accurate imaging and timely reports that assist healthcare providers in making informed clinical decisions.
Medical Disclaimer
This article is intended for educational and informational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment. If you experience vaginal bleeding, severe abdominal pain, dizziness, or any symptoms during pregnancy, seek immediate medical attention from a qualified healthcare professional. Never ignore medical advice or delay treatment because of information you have read online.
References
- American College of Obstetricians and Gynecologists (ACOG). Early Pregnancy Loss. Practice Bulletin.
- Royal College of Obstetricians and Gynaecologists (RCOG). The Management of Early Pregnancy Loss.
- National Institute for Health and Care Excellence (NICE). Ectopic Pregnancy and Miscarriage: Diagnosis and Initial Management.
- American Institute of Ultrasound in Medicine (AIUM). Practice Parameter for the Performance of Obstetric Ultrasound Examinations.
- Radiological Society of North America (RSNA) & American College of Radiology. RadiologyInfo.org – Early Pregnancy Ultrasound.
- World Health Organization (WHO). Recommendations on Antenatal Care for a Positive Pregnancy Experience.
- Doubilet PM, Benson CB, Bourne T, et al. Diagnostic Criteria for Nonviable Pregnancy Early in the First Trimester. New England Journal of Medicine. 2013;369:1443–1451.
