Failed early pregnancy
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Failed early pregnancy refers to the death of the embryo and therefore, miscarriage. The most common cause of embryonic death is a chromosomal abnormality.
Radiographic assessment
Major criteria
A pregnancy is considered non-viable on transvaginal ultrasound if:
- no fetal heart beat where:
- CRL ≥ 7 mm
- no fetal pole where:
If a fetal pole is present, fetal pole measurements override MSD measurement.
Both fetus and gestational sac are expected to grow 1mm/day. Hence, absence or inadequate growth on serial scans at least 7-10 days apart is suggestive of non-viability.
Other poor prognostic indicators include:
- no yolk sac, where:
- MSD > 8 mm
- embryo seen
- irregular gestational sac
- low position of the gestational sac
-<p><strong>Failed early pregnancy</strong> refers to the death of the <a title="embryo" href="/articles/embryo">embryo</a> and therefore, <a title="Miscarriage" href="/articles/miscarriage">miscarriage</a>. The most common cause of embryonic death is a chromosomal abnormality.</p>-<h4>Radiographic assessment</h4>-<h5>Major criteria</h5>-<p>A pregnancy is considered non-viable on transvaginal ultrasound if:</p>-<ul>-<li>no <a title="foetal heart beat" href="/articles/fetal-heart-beat">fetal heart beat</a> where:-<ul><li>-<a title="CRL" href="/articles/crown-rump-length">CRL</a> ≥ <strong>7</strong> mm</li></ul>-</li>-<li>no <a title="Fetal pole" href="/articles/fetal-pole">fetal pole</a> where:-<ul><li>-<a title="MSD" href="/articles/mean-sac-diameter">MSD</a> > <strong>25</strong> mm with no <a title="embryo" href="/articles/embryo">embryo</a>- +<p><strong>Failed early pregnancy</strong> refers to the death of the <a href="/articles/embryo">embryo</a> and therefore, <a href="/articles/miscarriage">miscarriage</a>. The most common cause of embryonic death is a chromosomal abnormality.</p><h4>Radiographic assessment</h4><h5>Major criteria</h5><p>A pregnancy is considered non-viable on transvaginal ultrasound if:</p><ul>
- +<li>no <a href="/articles/fetal-heart-beat">fetal heart beat</a> where:<ul><li>
- +<a href="/articles/crown-rump-length">CRL</a> ≥ <strong>7</strong> mm</li></ul>
- +</li>
- +<li>no <a href="/articles/fetal-pole">fetal pole</a> where:<ul><li>
- +<a href="/articles/mean-sac-diameter">MSD</a> > <strong>25</strong> mm with no <a href="/articles/embryo">embryo</a>
-</li>-</ul><p>If a fetal pole is present, fetal pole measurements override MSD measurement. </p>-<p>Both fetus and gestational sac are expected to grow 1mm/day. Hence, absence or inadequate growth on serial scans at least 7-10 days apart is suggestive of non-viability.</p>-<p>Other poor prognostic indicators include:</p>-<ul><li>no <a title="yolk sac" href="/articles/yolk-sac">yolk sac</a>, where:</li></ul><ul>-<ul>-<li>-<a title="MSD" href="/articles/mean-sac-diameter">MSD</a> > <strong>8</strong> mm</li>-<li>embryo seen</li>-</ul>-<li>irregular gestational sac</li>-<li>low position of the gestational sac</li>- +</li>
- +</ul><p>If a fetal pole is present, fetal pole measurements override MSD measurement. </p><p>Both fetus and gestational sac are expected to grow 1mm/day. Hence, absence or inadequate growth on serial scans at least 7-10 days apart is suggestive of non-viability.</p><p>Other poor prognostic indicators include:</p><ul><li>no <a href="/articles/yolk-sac">yolk sac</a>, where:</li></ul><ul>
- +<li><ul>
- +<li>
- +<a href="/articles/mean-sac-diameter">MSD</a> > <strong>8</strong> mm</li>
- +<li>embryo seen</li>
- +</ul></li>
- +<li>irregular gestational sac</li>
- +<li>low position of the gestational sac</li>
Images Changes:
Image 1 Ultrasound ( update )
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Case 1 -: with absent fetal heart beat
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