Clinical utility of aortic isthmus Doppler in the prediction of ...
网页2022年9月19日 · Abnormal aortic isthmus Doppler had a significant correlation with low cerebroplacental ratio, absent or reversed end-diastolic flow in the umbilical artery, and high pulsatility index in the ductus venosus.
Retrograde flow in aortic isthmus in normal and fetal heart disease …
网页2022年1月13日 · Reverse flow Retrograde flow (RF) of blood in the aortic isthmus can be observed in different types of fetal heart disease (FHD), including abnormalities in heart structure and function. This study sought to investigate the relationship between RF and blood flow parameters, and develop a computational fluid dynamics (CFD) model to …
Fetal aortic isthmus Doppler assessment to predict the adverse ...
网页2023年4月19日 · Fetal growth restriction (FGR) management and delivery planning is based on a multimodal approach. This meta-analysis aimed to evaluate the prognostic accuracies of the aortic isthmus Doppler to predict adverse perinatal outcomes in singleton pregnancies with FGR.
The Aortic Isthmus: A Significant yet Underexplored Watershed of …
网页2016年7月6日 · In b AoI flow is reversed in late systole and net flow is retrograde in diastole [2]. The AoI waveform changes slightly throughout gestation, reflecting both the physiological evolution of fetal ventricular function and changes in peripheral vascular impedance with gestation.
Technical aspects of aortic isthmus Doppler velocimetry in human ...
网页2009年5月28日 · Aortic isthmus retrograde diastolic blood flow signifies redistribution of fetal circulation, indicating lower upper body (cerebral) resistance compared with lower body (placental) resistance, whereas the reversal of net blood flow indicates that the fetus has problems maintaining cerebral oxygenation 3. Semiquantitative indices like PI and the ...
Aortic Isthmus Doppler Velocimetry in Fetuses with Intrauterine …
网页2019年3月29日 · After 31 weeks, there is a brief reverse flow at the beginning of diastole, which is more pronounced as gestation progresses (Fig. 4). However, it is not clear if this reverse flow represents a technical artifact or a physiological effect caused by the increase in flow from the right ventricle, which is known to occur at the end of systole ...
Fetal Aortic Isthmus and Descending Aorta | SpringerLink
网页Reverse flow during diastole identifies fetuses in danger of intrauterine death. Perinatal mortality in cases with reverse flow is reported to be high—in some series as high as 100% .
Atrial Flutter, Typical and Atypical: A Review
网页2017年5月2日 · In patients without a history of heart disease, cardiac surgery or catheter ablation, typical flutter ECG remains predictive of a right atrial re-entry circuit dependent on the inferior vena cava-tricuspid isthmus that can be very effectively treated by ablation, although late incidence of atrial fibrillation remains a problem.
Predictors of left ventricular reverse remodelling after ... - PubMed
网页Considering the known prognostic implications of LV remodelling and reverse remodelling in response to pressure overload, these results support the use of aortic isthmus ratio for timing of COA intervention, and for prognostication post-intervention.
2017 HRS/EHRA/ECAS/APHRS/SOLAECE expert consensus …
网页2017年9月15日 · A linear lesion created at the cavotricuspid isthmus is also shown. This lesion is generally placed in patients who have experienced cavotricuspid isthmus-dependent atrial flutter clinically or have it induced during EP testing.