Fetal myocardial performance index in pregnancies with idiopathic mildly increased amniotic fluid volume.
PURPOSE
To evaluate modified myocardial performance index (MPI), or Tei index, in fetuses of pregnancies with idiopathic mildly increased amniotic fluid index (AFI).


METHODS
We studied 25 cases (24-40 weeks) with idiopathic mildly increased AFI, and 25 gestational age- and fetal gender-matched healthy controls. Fetal echocardiographic variables and Doppler-derived indices were recorded, including left and right MPI, left isovolumetric contraction time (IVCT), left ejection time (ET), left isovolumetric relaxation time (IVRT), aortic and pulmonary arterial peak systolic velocity (PSV), left and right E/A ratios, middle cerebral artery (MCA) pulsatility index (PI), and umbilical artery (UA) PI.


RESULTS
The mean left MPI (0.52 vs 0.41, P < .0001) and right MPI (0.50 vs 0.42, P < .001) were higher, and mean IVCT (37.7 vs 25.9, P < .0001) was longer in cases than in controls. However, there were no significant differences between the two groups in IVRT (45.2 vs 43.2, P = .381), ET (160.2 vs 170.0, P = .079), aortic PSV (P = .073), left E/A (P = .080), pulmonary artery PSV (P = .061), right E/A (P = .054), MCA PI (P = .259), UA PI (P = .685), and cerebroplacental ratio (P = .645).


CONCLUSION
Pregnancies with idiopathic mildly increased AFI were associated with a significant increase in the fetal MPI of both left and right ventricles.
['Hashemi Attar|Amirhossein|A|', 'Hafezi|Fatemeh|F|https://orcid.org/0000-0002-5256-6984']
D000328:Adult D000653:Amniotic Fluid D004452:Echocardiography D005260:Female D005333:Fetus D006321:Heart D006801:Humans D008297:Male D020768:Middle Cerebral Artery D011247:Pregnancy D016216:Ultrasonography, Prenatal D014469:Umbilical Arteries
myocardial performance index idiopathic Tei index amniotic fluid index polyhydramnios