IntroSx2- Microsurgery

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Microsurgery differs from traditional surgery in... (4)

surgeon position, magnification, specialized instrumentation, suture and needle size
Describe the surgeon's position in microsurgery.
- seated
- arms resting on table or armrest (essential for fine motor control)
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
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
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)
- POOR CHOICE
Describe the magnification provided by Galilean head loupes.
- up to 2.5x
- adjustable interpupilary distance
- working distance varies
- better than simple loupes
Describe the magnification provided by prismatic head loupes.
- up to 8x
- highest optical quality
- sharp resolution
- greater depth of field
- more expensive
As magnification increases, the...

field of view and depth of field decrease.
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
For microsurgery, instruments are held in the _________ grip.

pencil
What sized suture is typically used in microsurgery?
- 6-0 to 11-0
- must have swaged on needle
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
What types of needles are used in microsurgery? (2)

Reverse cutting needle, spatula needle
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
What is epinephrine used for in ophthalmic surgery? (3)
- vasoconstriction
- hemostasis
- mydriasis

Author

Mawad

323941

Card Set

IntroSx2- Microsurgery

Description

vetmed IntroSx2

Updated

2016-09-30T23:41:26Z

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