Mitrální chlopeň se dvěma ústími (double orifice mitral valve, DOMV) je vzácná vrozená srdeční vada, obvykle spojená s jinými vrozenými malformacemi. Izolovaná DOMV byla popsána jen velmi vzácně. Prezentujeme případ 58letého muže bez předchozí historie kardiovaskulárního onemocnění, který podstoupil mitrální anuloplastiku pro významnou regurgitaci a u kterého di...

INTRODUCTION Orifice openers or orifice shapers are used to shape the coronal part of the root canals during endodontic treatment. OBJECTIVES The aim of this work was to analyse the cutting efficiency of Quantec Series 2000 system orifice shapers by means of computerised tomography (CT). MATERIALS AND METHODS Mandibular molars were selected, preoperative CT was performed and the cross-secti...

Because aortic stenosis results in the loss of left ventricular stroke work (due to resistance to flow through the valve and turbulence in the aorta), the percentage of stroke work that is lost may reflect the severity of stenosis. This index can be calculated from pressure data alone. The relation between percent stroke work loss and anatomic aortic valve orifice area (measured by planimetry f...

We developed and validated a mitral valve orifice method for Doppler cardiac output determination. In 15 open-chest dogs, cardiac output was controlled and measured by a roller pump interposed between the right atrium and pulmonary artery as a right-heart bypass. Left heart flows were measured in the open-chest dog model by Doppler measurements at the mitral valve orifice and compared not only ...

Background The Auditory tube (AT) extends from the anterior wall of the middle ear to the lateral wall of the nasopharynx, approximately at the level of the inferior nasal concha. The pharyngeal orifice of AT being an important landmark for endoscopic avaliation in patients with chronic otitis and also for the transnasal approach to the infratemporal fossa, the present study was undertaken to l...

Twenty years have passed since the first laparoscopic cholecystectomy was conducted by P. Moruet in 1987. Since then, the success of laparoscopy has been undeniable. Almost all surgical procedures can be carried out using laparoscopic techniques. The majority of those procedures that can be performed laparoscopically do so regularly. Laparoscopic gallbladder and bile ducts surgery, exploratory ...

This article presents a fair and balanced review of natural orifice translumenal endoscopic surgery. The article chronicles the history and technical aspects of natural orifice translumenal endoscopic surgery with particular emphasis on its application in urology. It is hoped that this article serves as a straightforward and pragmatic reference for practicing and academic urologists.

The simultaneous existence of double orifice right and left atrioventricular valves in the absence of ostium primum defects is rare and scarcely reported. We present the case of a 20-month old boy diagnosed with tetralogy of Fallot with pulmonary atresia who was found to have associated double-orifice mitral and tricuspid valves.

A 4-day-old Holstein bull calf with considerable oedema of the belly (water belly) was referred to theVeterinary Teaching Hospital of the School of Veterinary Medicine, Shiraz University. The owner did notobserve any urination since birth. Rupture of the urethra was suspected. Perineal urethrotomy was performed. Subsequently, catheterization of urethra revealed the obstruction near the external...