Fetal middle cerebral arterial peak systolic velocity
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The fetal middle cerebral arterial (MCA) peak systolic velocity (PSV) is an important parameter in fetal MCA Doppler assessment.
Sonographic assessment
The fetal MCA should be sampled~2 mm from the origin of the fetal internal carotid artery and the angle of the ultrasound beam and the direction of blood flow should be zero degrees0°. Usually the highest value is taken.
Interpretation
- reliable between 18-35 weeks
- increased PSV can indicate moderate-to-severe anemia in non-hydrops fetuses 4
See also
- automatic online fetal MCA PSV calculator as of 2011 from www.perinatology.com
-<p>The <strong>fetal middle cerebral arterial (MCA) peak systolic velocity (PSV) </strong>is an important parameter in <a href="/articles/fetal-middle-cerebral-arterial-doppler-assessment">fetal MCA Doppler assessment</a>.</p><h4>Sonographic assessment</h4><p>The fetal MCA should be sampled~2 mm from the origin of the fetal internal carotid artery and the angle of the ultrasound beam and the direction of blood flow should be zero degrees. Usually the highest value is taken.</p><h4>Interpretation</h4><ul>- +<p>The <strong>fetal middle cerebral arterial (MCA) peak systolic velocity (PSV) </strong>is an important parameter in <a href="/articles/fetal-middle-cerebral-arterial-doppler-assessment">fetal MCA Doppler assessment</a>.</p><h4>Sonographic assessment</h4><p>The fetal MCA should be sampled~2 mm from the origin of the fetal internal carotid artery and the angle of the ultrasound beam and the direction of blood flow should be 0°. Usually the highest value is taken.</p><h4>Interpretation</h4><ul>
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