honeybug6853 honeybug6853
  • 01-02-2018
  • Biology
contestada

How many bjork shiley valves have been implanted?

Respuesta :

cohvenant
cohvenant cohvenant
  • 01-02-2018
The valve was co-invented by American engineer Donald Shiley and Swedish heart surgeon Viking Björk. Beginning in 1971, it has been used to replace aortic valves and mitral valves.
Answer Link

Otras preguntas

PLEASE HELP WILL GIVE BRAINLIEST AND 5.0 STAR RATING
What is the fourth stage of the estrous cycle where, if no pregnancy occurs a drop in hormone levels prepares the reproductive system for the estrus the first s
Why do you think wars happen? Which of the theories or perspectives discussed in the lesson do you think best explains war?
Which equation models the problem below if c represents the number of babies whose eyes are closed? There are 12 babies in a photograph, and 9 of them have thei
How can one hormone, such as estrogen, mediate so many effects? A. Estrogen binds to common receptors inside several cell types, and each cell responds in the s
Select the correct answer. Choose the CONJUNCTION. Dad fixed the steps, for they were dangerous. OA. steps OB. for O C. were
PLEASE HELP IM FAILING.
what recyclable materials are used to produce these products? name of material.ETO PO SASAGUTAN I I / I \ I I I IPENC
PLZ HELP ITS DUE TODAY!!!!!!
Adam, Matt, and Clinton sold sandwiches in the ratio of 2:7:3 to raise money their basketball team. Matt sold 91 sandwiches. How many sandwiches did al three bo