From Tom Shillock
I found the article on “kinky bypass grafts” encouraging and depressing (11 June, p 28). Encouraging because it describes how arterial shunts are being improved; depressing because the principle of fluid dynamics on which the improvement is based is at least decades old.
Why is the medical profession only now discovering this principle’s obvious applicability to arterial shunts? Perhaps one day the profession will be more open to knowledge developed outside its culture of practice.
Portland, Oregon, US
