The fetal middle cerebral artery-peak systolic velocity (MCA-PSV) is a noninvasive tool for detection of intrauterine fetal anemia. Premature restriction of foramen ovale (FO) may prevent proper blood supply to the fetal brain. We presented a 29-year-old Rhesus-negative mother who had been referred to our center due to positive indirect Coombs test. A single live intrauterine fetus at 30 weeks of gestation was observed with normal MCA-PSV-multiples of the median (MoM). The mother was under weekly follow up due to an isoimmunized pregnancy. In the third week of followup, the MCA-PSV-MoM was within the normal range though fetal echocardiography showed that the findings were in favor of premature restriction of FO; so premature delivery was decided at the same day. A boy was delivered with significant paleness, hemoglobin level of 3 g/dL, positive direct Coombs test, and reticulocyte count of 20%. These findings resulted in a significant intrauterine hemolysis process due to Rh alloimmunization not detected by Doppler examination of MCA-PSV during pregnancy. The aim of this study was to show that MCA-PSV-MoM may not be a diagnostic method for detection of possible anemia in the fetus with congenital heart disease.
Rapid development of composite industries raised the demand for tough, effective, practical, and sustainable composites with enhanced mechanical, electrical, thermal, and physical properties. However, several major problems such as high production cost and nonrecyclability and nondegradability of fillers and composites limited their selectivity and approaches toward their aims. Herein, our aim is to present and review the recent achievements in matter of reinforced composites with renewable, recyclable, or degradable additives toward development of composites through a mass-scale production strategy with least charges, high efficiency, and fine mechanical, thermal, and physical properties. Additionally, such aim can reduce the overall amount of nondegradable pollutions such as plastics in the nature and decline overall the charges of composite industries by reusing such materials and decreasing their demand for raw material. Last but not least, to clean up the nature from industrial wastes, green strategies should be developed to whether reuse such material or degrade them via practical strategies.
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