Table 3.
Other Doppler parameters in normal and abnormal aortic isthmus Doppler groups (N=121)
| Parameters | Group 1aNormal AoI Doppler (N = 103) n (%) | Group 2aAbnormal AoI Doppler (N = 18) n (%) | P valueb |
|---|---|---|---|
| UA pulsatility index >95th centile | 8 (7.7) | 3 (16.6) | .22 |
| UA absent or reversed end-diastolic velocity | 13 (12.6) | 7 (38.9) | .005 |
| Middle cerebral artery pulsatility index <5th centile | 43 (41.7) | 11 (61.1) | .12 |
| Cerebroplacental ratio <1 | 27 (26.2) | 10 (55.5) | .01 |
| Ductus venosus pulsatility index >95th centile | 4 (3.8) | 4 (22.2) | .003 |
| Ductus venosus absent or reversed A-wave | 1 (0.97) | 1 (5.5) | 0.15 |
Doppler parameters compared using chi-square test.
AoI, aortic isthmus; UA, umbilical artery.
a
Values shown as numbers and percentages
b
P value <.05 was significant.
Vasudeva. Clinical utility of aortic isthmus Doppler. Am J Obstet Gynecol Glob Rep 2022.