Ординатура / Офтальмология / Английские материалы / Basic Principles of Ophthalmic Surgery_Arnold_2006

riovenous malformations. Inadvertentunintended injury to the optic nerve and retina and spasmof the ophthalmic artery may occur during embolization therapy.

KEY POINTS

-+ The ophthalmic surgeonhasa wide array of preventative,mechanical, and pharmacologictechniquesto control surgicalbleeding.

-+ The experiencedsurgeonappliesappropriate measuresin a timely fashionto enhancesurgicalresultsand surgicalefficiency in ophthalmic surgery.

SELF.ASSESSMENT TEST

1.Measuresto preventexcessivebleedinginclude (list all that apply)

a.Discontinuance of aspirin

b.Avoidance of nitric oxide in irrigating fluids

c.Hypotensive anesthesia

d.Control of hypertension

2.The major advantageof bipolar diathermy is

a.Focus of heatingenergyon targetarea

b.Lack of coagulumproduction

c.Increasedtissuedestruction

d.Simultaneoustamponade

3.Epinephrine (list all that apply)

a.May be used in intraocular solutions

b.Shortensduration of infiltrative anesthesia

c.Reducesbleeding by its biochemicalenhancementof hemostasis

d.Is a potent vasoconstrictor

4.Name two risks of use of thrombin for hemostasis.

5.Name two methodsof creatingtamponadein intraocular surgery.

For preferred responsesto thesequestions,seepages223-224.