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The Bentall procedure is a type of cardiac surgery involving composite graft replacement of the aortic valve, aortic root, and ascending aorta, ...
The valve-sparing aortic root replacement allows for direct narrowing of enlarged aortas, which change the fluid dynamics of outbound blood from the heart, while preserving the natural tissues of the aortic valve, which means the patient does not have to rely on anticoagulants.
Diagram of the human heart. Several adaptations of the Ross procedure have evolved, but the principle is essentially the same; to replace a diseased aortic valve with the person's own pulmonary valve (autograft), and replace the person's own pulmonary valve with a pulmonary valve from a cadaver (homograft) or a stentless xenograft.
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Bentall was Consultant Thoracic Surgeon at Hammersmith Hospital from 1955 to 1985. In 1959 he and his team, with Bill Cleland as the lead surgeon, were invited to visit the Institute of Cardiovascular Surgery in Moscow where they carried out five open-heart operations, watched by more than 200 of the Soviet Union 's leading surgeons.
Deep hypothermic circulatory arrest (DHCA) is a surgical technique in which the temperature of the body falls significantly (between 20 °C (68 °F) to 25 °C (77 °F)) and blood circulation is stopped for up to one hour.
Enjoy a classic game of Hearts and watch out for the Queen of Spades!
A cynocephalus. From the Nuremberg Chronicle (1493).. The characteristic of cynocephaly, or cynocephalus (/ s aɪ n oʊ ˈ s ɛ f ə l i /), having the head of a canid, typically that of a dog or jackal, is a widely attested mythical phenomenon existing in many different forms and contexts.