background: transcatheter occlusion of the patent ductus arteriosus (pda) is a minimally invasive treatment. the appropriate device size is chosen based on the angiographic measurement of the pda . the current study aimed to assess the relationship between the transthoracic echocardiographic (tte) measurements of the pda prior to the occlusion procedure and the actual size of the deployed devic...

in this retrospective study, 510 infants and children with patent ductus arteriosus (pda) who underwent surgery at the shahid rajai heart hospital in tehran were evaluated to determine the rate of surgical complications, morbidity and mortality. 30 patients (6%) developed minor to major complications postoperatively. four patients who had undergone pda ligation without division required reopera...

there are many agreements for transferring technology, but license agreement is the most important agreement in this regard. according to the mentioned agreement, the owner of patent or technology as licensor grants the license to licensee in specific duration and in a given territory. exclusive rights of licensor and the objectives of competition law, including the welfare of consumers or prev...

normal 0 false false false en-us x-none ar-sa background: this randomized clinical trial compared rates of stroke or transient ischemic attack recurrence or death in patients with cryptogenic stroke and patent foramen ovale (pfo) who received medical treatment with aspirin or warfarin. materials and methods: forty-four iranian patients with cryptogenic stroke and patent foramen ovale participat...

Recent examples of patent litigation show the evidence of firms strategic patent use. Thus forecasting patent litigation becomes a greater priority. Patent citations have been prevalent in its usage in analyzing business environment as diverse patent indicators or a tool to predict patent litigation. However, most previous research has considered only direct patent citations. In order to overco...

Articular cartilage was predicted to be one of the first tissues to successfully be regenerated, but this proved incorrect. In contrast, bone (but also vasculature and cardiac tissues) has seen numerous successful reparative approaches, despite consisting of multiple cell and tissue types and, thus, possessing more complex design requirements. Here, we use bone-regeneration successes to highlig...

The occurrence of Down's syndrome in both dizygotic twins appears to be very rare. A case of twins of unlike sex is reported, in which chromosomal analysis showed trisomy 21 in both of them, while the parental karyotypes were normal. This is the third reported case of such a constellation, and the second one in which infant and parental chromosomal analysis was done.