Term
| What glaucoma medication can prolong the effects of succinylcholine? |
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Definition
| echothiophate, usually prolongs it 30 minutes |
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Term
| What is normal intraocular pressure? |
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Definition
| 10-21 mmHg is normal, > 22 is hypertension |
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Term
| What physiologic factors will increase intraocular pressure? |
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Definition
| increased venous pressure, arterial pressure, CO2, and hypoxia |
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Term
| What are the 2 types of glaucoma? |
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Definition
| Open angle (chronic) and closed angle (acute) |
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Term
| What are the symptoms of acute angle-closure glaucoma? |
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Definition
| ocular pain, blurred vision, and fixed mid-dilated pupils |
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Term
| How does mannitol affect intraocular pressure? |
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Definition
| Mannitol, dextran, urea, and sorbital all decrease intraocular pressure by decreasing aqueous humor formation by the ciliary body. |
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Term
| Is atropine contraindicated in patients with glaucoma? |
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Definition
| The amount of atropine typically administered preoperatively (0.4 mg IV) results in approximately 0.0001 mg absorbed by the eye which many practitioners regard as having an insignificant effect on intraocular pressure. |
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Term
| What specific actions should you incorporate into the anesthetic for patients with glaucoma? |
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Definition
| Pre-op instill miotic drops to enhance aqueous humor drainage, avoid venous congestion and over hydration, avoid coughing and hypotension (thrombosis is retinal vessels |
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Term
| What factors increase intraocular pressure and which decrease it? |
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Definition
| Succs increases it, VA, nitrous, benzo, opioids, and barbs all decrease IOP |
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