Six patients with mitral stenosis complicated by renal artery embolism studied prospectively are presented. In five patients there was unilateral and in one patient bilateral renal artery involvement. The diagnosis was confirmed by intravenous pyelography, retrograde pyelography, renal angiography, renal scan or a combination of these. All had atrial fibrillation, proteinuria and elevated ...

objective(s): appendicitis remains the most common condition in the pediatric population requiring emergency abdominal operation. management of acute simple appendicitis is well described but controversy remains as to the optimal treatment of complicated appendicitis. common complications of acute appendicitis include: localized peritonitis and abscess formation, flegmon and general peritonitis...

Linear quadratic controllers for dynamical systems with complicated dynamics are presented. Systems with complicated dynamics are those that run over compact sets and have such features as nontrivial recurrence, periodic and aperiodic orbits. The controllers are based on modeling the nonlinear dynamical systems as linear dynamically varying systems. Necessary and sufficient conditions for the e...

purpose: to evaluate the efficacy and safety of primary aphakic artisan–verysise intraocular lens (iol) implantation during complicated cataract surgery. methods: the study is a retrospective analysis of 49 eyes that underwent primary aphakic artisan iol implantation for complicated cataract surgery. compiled data included demographic information, visual outcomes and complications. pre- and pos...

The problem of deriving membership functions as a means for describing linguistic variables (for some control process) and the choice of fuzzy inference operators and connectives is at the heart of developing fuzzy control systems. Over the years con-nectionist systems have obtained prominence as a means to solve complicated learning tasks. More recently a surge in interest for applying neural ...

conclusions our review demonstrated that a pregnant lady suspected of aa poses a great clinical challenge to surgeons, as far as scoring systems are almost unreliable. positive imaging prior to surgery is warranted, in order to avoid a nontherapeutic surgery which is always associated with high morbidity rates. introduction acute appendicitis (aa) is one of the most common differential diagnose...