Threatened miscarriage
Updates to Article Attributes
Body
was changed:
Threatened miscarriage (or threatened abortion) is a loose term referring to pain, bleeding or contractions during the first 20 weeks of gestation, with a closed cervical os.
Epidemiology
It occurs in 20-25% of pregnancies and is associated with an increased rate of fetal loss (15-50%, compared to 2-7%).
Radiographic assessment
Ultrasound
Features suggesting a threatened abortion aremiscarriage are:
-
CRLCrown rump lenght (CRL)of 7mmof ≥7 mm and noheart beatheartbeat -
mean gestational sac diameter of
25mm≥25 mm and nofetal poleembryo - persistent absence of
aanfetal poleembryowithwith cardiac activity, 2 weeks post a scan demonstrating a gestational sac with a yolk sac - yolk sac of more than 7 mm.
- small gestational sac compared to fetal pole
- fetal bradycardia: <80-90 bpm
- small or irregular gestational sac: MSD-CRL <5 mm
- large subchorionic haemorrhage
Complications
Threatened miscarriage can go on to become any of:
-<p><strong>Threatened miscarriage</strong> (or <strong>threatened abortion</strong>) is a loose term referring to pain, bleeding or contractions during the first 20 weeks of gestation, with a closed <a href="/articles/cervical-os">cervical os</a>. </p><h4>Epidemiology</h4><p>It occurs in 20-25% of pregnancies and is associated with an increased rate of fetal loss (15-50%, compared to 2-7%).</p><h4>Radiographic assessment</h4><h5>Ultrasound</h5><p>Features suggesting a threatened abortion are:</p><ol>- +<p><strong>Threatened miscarriage</strong> (or <strong>threatened abortion</strong>) is a loose term referring to pain, bleeding or contractions during the first 20 weeks of gestation, with a closed <a href="/articles/cervical-os">cervical os</a>. </p><h4>Epidemiology</h4><p>It occurs in 20-25% of pregnancies and is associated with an increased rate of fetal loss (15-50%, compared to 2-7%).</p><h4>Radiographic assessment</h4><h5>Ultrasound</h5><p>Features suggesting a threatened miscarriage are:</p><ol>
-<a href="/articles/crown-rump-length">CRL</a> of 7mm and no heart beat</li>- +<a href="/articles/crown-rump-length">Crown rump lenght (CRL)</a> of ≥7 mm and no heartbeat</li>
-<a href="/articles/mean-sac-diameter">mean gestational sac diameter</a> of 25mm and no fetal pole</li>-<li>persistent absence of a <a href="/articles/fetal-pole">fetal pole</a> with cardiac activity, 2 weeks post a scan demonstrating a gestational sac with a yolk sac</li>- +<a href="/articles/mean-sac-diameter">mean gestational sac diameter</a> of ≥25 mm and no embryo</li>
- +<li>persistent absence of an <a href="/articles/fetal-pole">embryo</a> with cardiac activity, 2 weeks post a scan demonstrating a gestational sac with a yolk sac</li>
-<li>small gestational sac compared to fetal pole </li>- +<li>small gestational sac compared to fetal pole</li>
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