Arteriovenous malformation (AVM) of the uterus is a rare cause of menorrhagia and may at times lead to life-threatening hemorrhage. The clinical findings may not always be reliable in the diagnosis of uterine AVM, and a high index of suspicion is important because, unlike many other causes of menorrhagia, curettage may paradoxically aggravate the bleeding. Herein are described the cases of 2 patients with uterine AVM with abnormal vaginal bleeding. Both had a history of abortion followed by dilation and curettage. In both patients, the diagnosis of uterine AVM was established at Doppler flow ultrasonography. Treatment using transcatheter embolization was successful, and both patients had normal menstrual cycles at follow-up. One patient delivered a healthy baby 2? years after transcatheter embolization. 相似文献
To ascertain and analyze the indications for transfusion of blood components in obstetric practice at our center.
Materials and Methods
A prospective observational study was conducted to analyze the various indications for transfusion of blood components in a tertiary care hospital.
Results
1.3% of all obstetric patients from our center had blood components transfusion during the study period. Postpartum hemorrhage, placental causes and anemia are the commonest causes for need of transfusion in obstetric practice.
The main objective of this article is to perform the turning operation on an EN36B steel work-billet with a tungsten carbide tool, to study the optimal cutting parameters and carry out an analysis of flank-wear. Experimental and simulation-based research methodology was opted in this study. Experimental results were obtained from the lab setup, and optimisation of parameters was performed using RSM (response surface methodology). Using RSM, cutting-tool flank-wear was optimised, and the cutting parameters which affect the flank wear were determined. In results main effect plot, contour plot, the surface plot for flank-wear and forces (Fx, Fy and Fz) were successfully obtained. It was concluded that tool flank-wear is affected by depth of cut, and that flank-wear generally increases linearly with increasing cutting-speed, depth of cut and feed-rate. To validate the obtained results, predicated and measured values were plotted and were in very close agreement, having an accuracy level of 96.33% to 98.92%. 相似文献
