Publications by authors named "R WARWICK"

Six months following modified Bentall procedure a patient presented with angina and acute ST depression. CT coronary angiogram revealed severe narrowing of the left main coronary artery. Minimal invasive off pump coronary artery bypass grafting avoided complex reoperative surgery and delivered an excellent clinical outcome.

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Subclavian artery aneurysms are extremely rare, accounting for less than 1% all of peripheral aneurysms. They are often due to atherosclerosis or thoracic outlet syndrome and present at an average age of 47 years. Here, we present an incidental finding of an 18 mm rapidly increasing aneurysm involving the first and second part of the right subclavian artery in a woman in her 20s.

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Article Synopsis
  • The study investigates how inputs from the brain, specifically histaminergic neurons from the hypothalamus, influence the processing of visual information in the mammalian retina.
  • Histamine application changes the activity of retinal ganglion cells, particularly enhancing responses in direction-selective cells to fast-moving objects, which aligns with increased arousal conditions.
  • The use of antihistamines shows that these brain-induced modifications also affect visual sensitivity in both mice and humans, suggesting a significant evolutionary role for the histaminergic system in vision.
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We describe a novel technical modification for reoperative aortic valve replacement in destructive recurrent prosthetic aortic valve endocarditis. We encountered complex anatomy in a previously operated aortic root wherein the aortic annulus and the right coronary sinus of Valsalva were destroyed. This precluded secure suture placement.

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