Evaluation of the measurement of the middle cerebral artery peak systolic velocity before and after placental laser coagulation in twin-to-twin transfusion syndrome

2012 ◽  
Vol 32 (2) ◽  
pp. 127-130 ◽  
Author(s):  
Ngoc-Tu Trieu ◽  
A. S. Weingertner ◽  
F. Guerra ◽  
D. Dautun ◽  
M. Kohler ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Peak Systolic Velocity ◽  
Laser Coagulation ◽  
Before And After

scholarly journals Doppler Flow Velocity Indices (RI, PI, S/D & PSV) of Fetal Middle Cerebral Artery in Normal Pregnancies: Correlation with Gestational Age of 20 to 40 Weeks

2012 ◽  
Vol 2 (2) ◽  
pp. 77-80
Author(s):  
Md Abu Taher ◽  
Nuzhat Tasmin ◽  
AS Mohiuddin ◽  
Md Mohit Ul Alam ◽  
Md Mofazzal Sharif ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Flow Velocity ◽  
Cerebral Artery ◽  
Gestational Age ◽  
Resistance Index ◽  
Peak Systolic Velocity ◽  
Doppler Flow ◽  
Significant Difference ◽  
Before And After ◽  
Doppler Indices

This observational type of descriptive study was carried out in the Department of Radiology and Imaging, BIRDEM selecting 70 Bangladeshi pregnant babies with the aim to find out the normogram of foetal middle cerebral artery Doppler flow velocity indices and correlation between Doppler flow velocity indices [Resistance Index (RI), Pulsatility Index (PI), Systolic/Diastolic ratio (S/D) & Peak Systolic Velocity (PSV)] of foetal middle cerebral artery and gestational age in normal pregnancies of 20 to 40 weeks. It was observed that RI, PI and S/D were decreased with the advance of gestational age but PSV was increases with the advance of gestational age. Statistical analyses showed there were significant difference between mean PSV, RI and PI before and after 25 weeks of gestation. No significant difference was found between mean S/D before and after 25 weeks of gestation. It was observed from Correlation analysis between Doppler indices with independent gestational age that all the Doppler indices of foetal middle cerebra artery was positively correlated with the whole gestation period. The statistical analysis showed only PSV and RI were significantly correlated with the gestational age. Simple regression analysis between dependent Doppler index with independent gestational age before and after 25 weeks revealed that all the Doppler indices had positive relationship with the corresponding gestational age but relationship between PSV and PI (before 25 weeks) with their corresponding gestational ages were only statistically significant.DOI: http://dx.doi.org/10.3329/birdem.v2i2.12306 Birdem Med J 2012; 2(2) 77-80

scholarly journals Doppler middle cerebral artery peak systolic velocity measurement as diagnostic tool for fetal anemia after in-utero transfusions in red blood cell alloimmunisation

2020 ◽  
Vol 77 (1) ◽  
pp. 8-13
Author(s):  
Mirjana Marjanovic-Cvjeticanin ◽  
Snezana Plesinac ◽  
Jelena Dotlic ◽  
Darko Plecas ◽  
Dusica Kocijancic-Belovic ◽  
...  
Keyword(s):  
Blood Cell ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Red Blood Cell ◽  
Diagnostic Tool ◽  
Peak Systolic Velocity ◽  
In Utero ◽  
Fetal Anemia ◽  
Transfusion Therapy ◽  
Before And After

Background/Aim. Doppler sonography of fetal middle cerebral artery peak systolic velocity (MCA-PSV) can be used to predict fetal anemia and the need for in utero intravascular transfusion (IUIT) in red blood cell (RBC) alloimmunisation pregnancies. The aim of this study was to evaluate whether measurement of MCA-PSV in fetuses that had undergone one to three transfusions is a good diagnostic tool for fetal anemia. Methods. Study included 36 pregnancies treated due to RBC alloimmunisation in our tertiary referral center during the 5-year period (2012?2017). We measured MCA-PSV and hematocrit (Hct) in all patients. In seven pregnancies there was a need to perform sequential IUITs for correction of fetal anemia. In these patients we compared MCA-PSV and Hct values before and after every transfusion. Results. Hct and MCA-PSV correlated negatively before transfusion therapy (p = 0.035) and after the second transfusion (p = 0.046). Contrary, after the first (p = 0.954), before the second (p = 0.738), as well as before (p = 0.092) and after (p = 0,741) the third transfusions there were no significant correlations between Hct and MCAPSV values. Hct values before and after transfusions were positively associated (p = 0.001), but MCA-PSV were not (p = 0.296). According to performed receiver operating characteristic (ROC) analysis the cut-off point of MCA-PSV for investigated patients was 1.22 multiples of its median (MoM). Conclusion. There is a reduction in MCA-PSV accuracy for assessing fetal anemia in previously transfused fetuses. Larger studies are needed to explain the reasons for these findings and potentially set new referral values of MCA-PSV for better diagnostics of fetal anemia.

Elevated middle cerebral artery peak systolic velocity as a prenatal manifestation of heterozygous type 2 alpha-thalassemia

2013 ◽  
Vol 167 (2) ◽  
pp. 235-236 ◽  
Author(s):  
Lorraine M. Gwanmesia ◽  
Kaveh Samii ◽  
Michel Boulvain ◽  
Philippe Extermann ◽  
Roland Faigaux ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Peak Systolic Velocity ◽  
Alpha Thalassemia
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