What does MCA PSV mean?

Objectives: To establish reference ranges for middle cerebral artery peak systolic velocity (MCA PSV) and to certify their value in the management of Rhesus alloimmunized pregnancies. Material and methods: A reference range of MCA PSV with gestation was constructed by studying 342 pregnancies at 25-40 weeks.

How is MCA PSV calculated?

A linear model exists, established in 2000 by Mari et al.: log(MCA PSV)= 2.31 + 0.046 * GA , where MCA PSV = middle cerebral artery peak systolic velocity, and GA = gestation age in weeks.

What does MCA Doppler mean?

What are MCA Dopplers? MCA stands for “middle cerebral artery” and PSV stands for “peak systolic velocity.” MCA Dopplers are effectively an ultrasound that detects the speed blood is going through the babies’ brains. It’s non-invasive and requires some skill to get the reading at the correct angle.

What is MCA in pregnancy?

Fetal middle cerebral arterial (MCA) Doppler assessment is an important part of assessing fetal cardiovascular distress, fetal anemia or fetal hypoxia. In the appropriate situation it is a very useful adjunct to umbilical artery Doppler assessment.

What is normal MCA?

In the normal cognitive group, we found that the mean value of right MCA PI was 0.87 (±0.15) and the left MCA PI was 0.86 (±0.18); while in the group with impaired cognitive, we found that the mean value of right MCA PI was 1.18 (±0.22) and left MCA PI was 1.21 (±0.17).

What is PSV in blood test?

Objective The fetal middle cerebral artery peak systolic velocity (MCA PSV) has been suggested as a potential test to predict the fetal hematocrit level.

What does PSV mean in ultrasound?

Peak systolic velocity (PSV) is an index measured in spectral Doppler ultrasound. On a Doppler waveform, the peak systolic velocity corresponds to each tall “peak” in the spectrum window 1.

What is MCA PSV mom?

Formula: MCA-PSV= e (2.31 + 0.046 GA), where MCA-PSV is the peak systolic velocity in the middle cerebral artery and GA is gestational age. In fetuses with anemia the MCA PSV appears to increase above the normal range because of decreased blood viscosity and increased cardiac output associated with the anemia.