The purpose of this paper is to report a salvage maneuver for accidental coverage of both renal arteries during endovascular aneurysm repair (EVAR) of an infrarenal abdominal aortic aneurysm (AAA). A 72-year-old female with a 6 cm infrarenal abdominal aortic aneurysm was treated by endovascular means with a standard bifurcated graft. Upon completing an angiogram, both renal arteries were found ...

In this essay, we focus on the moral justification of a highly controversial measure to redress medical brain drain: the duty to stay. We argue that the moral justification for this duty lies primarily in the fact that medical students impose high risks on their fellow citizens while receiving their medical training, which in turn gives them a reciprocity-based reason to temporarily prioritize ...

Endovascular aneurysm repair (EVAR) using stent grafts has shown to be an effective alternative to surgical repair in treating an abdominal aortic aneurysm (AAA). EVAR is associated with shorter hospital stays, less blood loss, shorter operating times, and lower early morbidity and mortality compared to open surgical repair, although EVAR required a higher reintervention rate during a longer fo...

We analyze numerically the mechanisms controlling the spacing of chimneys--channels devoid of solid--in two-dimensional mushy layers formed by solidifying a binary alloy. Chimneys are the principal conduits through which buoyancy effects material transport out of the mushy layer and into the liquid from which it formed. Experiments show a coarsening of chimney spacing; we pursue the hypothesis ...

Objective: To compare the survival and post-op complications following primary closure of perforated peptic ulcer by omental patch technique in 4 groups of patients as follows: two-drain group, one-drain subhepatic group, one-drain pelvic group and nodrain group. Methods: This is a prospective case-controlled clinical study performed in the Jawaharlal Nehru Medical College Hospital, Aligarh Mus...

Understanding some of the basic wind engineering concepts helps one understand the chimney’s response. The circular cross section of the steel chimney characteristically provides aerodynamic lift perpendicular to the wind direction. Knowing how to predict and prevent these adverse responses is of critical importance to steel chimney design. I. STATIC WIND FORCES The force exerted by wind varies...

It is widely acknowledged that cancers are disorders of cell growth and behavior and that its cause has to be defined at cellular levels. However, studies have shown that the cause of cancer can be deduced from a study of its epidemiology. Sir Percival Pott is credited with linking chemicals to causing cancer when he observed astutely that Chimney sweeps, because of their chronic exposure to so...

In the paper, experimental analyses of free convection heating transfer in a flat wavy-fin heat exchanger with dimensions 500 × mm were investigated. The reserch mainly included determining average flux and heat-transfer coefficient for two selected types finned exchangers. First, tests conducted exchangers without considering so-called ’chimney’ effect; these will be treated as reference studi...