title: [An automatic system controlled by microcontroller for carotid sinus perfusion].
abstract: OBJECTIVE
  To establish a new method for controlling automatically the carotid perfusion pressure.
  
  
  METHODS
  A cheap practical automatic perfusion unit based on AT89C2051 micro controller was designed. The unit, LDB-M perfusion pump and the carotid sinus of an animal constituted an automatic perfusion system.
  
  
  CONCLUSIONS
  This system was able to provide ramp and stepwise updown perfusion pattern and has been used in the research of baroreflex. It can insure the precision and reproducibility of perfusion pressure curve, and improve the technical level in corresponding medical field.
authors.affiliation: Department of Physics, Hebei Medical University, Shijiazhuang 050017, China.
authors.forename: X L
authors.initials: XL
authors.lastname: Yi
authors.forename: M Y
authors.initials: MY
authors.lastname: Wang
authors.forename: Z Z
authors.initials: ZZ
authors.lastname: Fan
authors.forename: R R
authors.initials: RR
authors.lastname: He
mesh_terms: D000818:Animals; D017704:Baroreflex; D002346:Carotid Sinus / Q000502:physiology*; D001330:Electronic Data Processing; D010477:Perfusion / Q000379:methods*; D051381:Rats