IntroSx2- Microsurgery

  1. Microsurgery differs from traditional surgery in... (4)
    surgeon position, magnification, specialized instrumentation, suture and needle size
  2. Describe the surgeon's position in microsurgery.
    • seated
    • arms resting on table or armrest (essential for fine motor control)
  3. What are the purposed of using magnification in microsurgery?
    • provide improved view of tissues of concern
    • allow a comfortable working distance for the surgeon
    • facilitate adjustment of the interpupillary distance to suit the surgeon
    • permit a wide field of view
  4. What is the appropriate magnification for eyelids/ conj, cornea/ urogenital, and intraocular/ vascular/ neuro?
    • eyelids/ conj-- 2-5x
    • cornea/ urogenital- 5-10x
    • intraocular/ vascular/ neuro- 8-15x
  5. Describe magnification provided by simple head loupes.
    • one pair of positive meniscus lenses
    • limited by spherical aberration and color fringing
    • fixed interpupilary distance
    • very short working distance (poor surgeon body position and arm position)
  6. Describe the magnification provided by Galilean head loupes.
    • up to 2.5x
    • adjustable interpupilary distance
    • working distance varies
    • better than simple loupes
  7. Describe the magnification provided by prismatic head loupes.
    • up to 8x
    • highest optical quality
    • sharp resolution
    • greater depth of field
    • more expensive
  8. As magnification increases, the...
    field of view and depth of field decrease.
  9. What are differences between microsurgical packs and traditional instruments?
    • microsurgery instruments are:
    • 1/3 smaller
    • fine jaws and teeth (more delicate)
    • finish does not reflect light
  10. For microsurgery, instruments are held in the _________ grip.
  11. What sized suture is typically used in microsurgery?
    • 6-0 to 11-0
    • must have swaged on needle
  12. What 5 basic instruments are needed for microsurgery?
    • Microsurgical needle holders: designed to hold small microneedles and suture
    • Colibri forceps: delicate 1 over 2 toothed forceps.
    • Suture typing forceps: small suture (6-0 to 10-0) cannot be tied by hand - forceps are needed.
    • Microsurgical scissors (Steven's or Wescott tenotomy scissors): these scissors have very small blades 
    • Microsurgical blades (Beaver blades #63-65): miniature surgical blades designed for small tissues; require Beaver handle
  13. What types of needles are used in microsurgery? (2)
    Reverse cutting needle, spatula needle
  14. How can you ensure that there is no patient movement under anesthesia? (5)
    • sand bags
    • inner tube
    • vacuum pillows
    • paralysis (non-depolarizing neuromuscular blocking drugs- atracurium)
    • retrobulbar block
  15. What is epinephrine used for in ophthalmic surgery? (3)
    • vasoconstriction
    • hemostasis
    • mydriasis
Card Set
IntroSx2- Microsurgery
vetmed IntroSx2