Mod9: April's Practice questions Flashcards
The transparent, anterior portion of the eye that permits light to enter is called the:
A. cornea
B. iris
C. ciliary body
D. retina
A. cornea
B. iris
C. ciliary body
D. retina
Mydrasis occurs during ____ activation while miosis occurs during _____ activation.
A. SNS, PNS
B.PNS, SNS
C. both SNS and PNS
A. SNS, PNS
B.PNS, SNS
C. both SNS and PNS
Topical administration of drugs act on the _________.
A. choroid
B. conjunctiva
C. sclera
D. ciliary body
A. choroid
B. conjunctiva
C. sclera
D. ciliary body
How many muscles move the eye within the globe?
A. 5
B. 6
C. 8
D. 10
A. 5
B. 6
C. 8
D. 10
Treatment of glaucoma includes (select two)
A. decreasing aqueous drainage
B. increasing aqueous production
C. increasing aqueous drainage
D. decreasing aqueous production
A. decreasing aqueous drainage
B. increasing aqueous production
C. increasing aqueous drainage
D. decreasing aqueous production
Select two class of medications that will decrease aqueous production
A. beta-blockers
B. anticholinesterases
C. carbonic anhydrase inhibitors
D. cholinergic agonist
A. beta-blockers
B. anticholinesterases
C. carbonic anhydrase inhibitors
D. cholinergic agonist
<strong>Beta-blockers</strong> and <strong>carbonic anhydrase</strong> inhibitors will decrease aqueous <u>production</u>
<strong>Anticholinesterases</strong> & <strong>cholinergic agonist</strong> increase aqueous humor <u>drainage</u> via PNS mediated miosis
Miosis/constriction promotes aqueous outflow
A. True
B. False
A. True
B. False
Normal intraocular pressure is:
A. 6-10 mmHg
B. 10-15 mmHg
C. 12-20 mmHg
D. 15-22 mmHg
A. 6-10 mmHg
B. 10-15 mmHg
C. 12-20 mmHg
D. 15-22 mmHg
Factors that increase intraocular pressure include all of the following except:
A. decrease in aqueous drainage
B. hypercarbia
C. decrease in CVP
D. coughing
A. decrease in aqueous drainage
B. hypercarbia
C. decrease in CVP
D. coughing
Succinylcholine will increase IOP ______ mmHg for 5-10 minutes.
A. 2-4
B. 5-10
C. 8-10
D. 10-12
A. 2-4
B. 5-10
C. 8-10
D. 10-12
Which drug will theoretically decrease IOP to the greatest extent?
A. sevoflurane
B. N2O
C. fentanyl
D. midazolam
A. sevoflurane
B. N2O
C. fentanyl
D. midazolam
The oculocardiac reflex, also referred to as the five and dime reflex, involves the trigeminal (V) nerve and the vagus (X) nerve. Which pathway does the vagus nerve take?
A. afferent
B. sensory
C. efferent
A. afferent
B. sensory
C. efferent
Which patient would you want to avoid giving a prophylactic dose of atropine to prevent OCR?
A. a 48 year old with COPD
B. a 60 year old with CAD
C. a 50 year old with HTN
D. a 75 year old with RA
A. a 48 year old with COPD
B. a 60 year old with CAD
C. a 50 year old with HTN
D. a 75 year old with RA
Topical or regional anesthesia for eye procedures may not be well tolerated in:
A. a patient who is able to lie flat
B. a patient who has a chronic cough
C. a patient who can lie flat
D. a patient who can tolerate their face being covered
A. a patient who is able to lie flat
B. a patient who has a chronic cough
C. a patient who can lie flat
D. a patient who can tolerate their face being covered
Which type of block is associated with less pain but a longer onset?
A. peribulbar
B. retrobulbar
C. facial nerve
D. none of the above
A. peribulbar
B. retrobulbar
C. facial nerve
D. none of the above
The most common complication from blocks in ophthalmic procedures is:
A. stimulation of OCR
B. retrobulbar hemorrhage
C. trauma to optic cranial nerve
D. intraarterial injection
A. stimulation of OCR
B. retrobulbar hemorrhage
C. trauma to optic cranial nerve
D. intraarterial injection
Complications associated with a facial nerve block include all of the following except:
A. laryngospasm
B. dysphagia
C. seizures
D. respiratory distress
A. laryngospasm
B. dysphagia
C. seizures
D. respiratory distress
Post retrobulbar syndrome can cause (select two)
A. LOC
B. laryngospasm
C. apnea
D. retrobulbar hemorrhage
A. LOC
B. laryngospasm
C. apnea
D. retrobulbar hemorrhage
Topical anesthesia can only be used for anterior chamber ophthalmic procedures.
A. True
B. False
A. True
B. False
Indications for general anesthesia for ophthalmic procedures include all of the following except:
A. severe claustrophobia
B. inability to communicate
C. inability to lie flat
D. procedures longer than 1 hour
A. severe claustrophobia
B. inability to communicate
C. inability to lie flat
D. procedures longer than 1 hour
Strabismus procedures have an increased risk of (select two)
A. post-op pain
B. PONV
C. bleeding
D. OCR
A. post-op pain
B. PONV
C. bleeding
D. OCR
Phacoemulsification is: (select two)
A. usually performed under regional anesthesia
B. usually performed under topical anesthesia
C. typically a no stitch procedure
D. involves a 10-12 mm incision
A. usually performed under regional anesthesia
B. usually performed under topical anesthesia
C. typically a no stitch procedure
D. involves a 10-12 mm incision
To prevent the accumulation of CO2 under facial drapes during a cataract procedure, the anesthetist should:
A. have HOB slightly elevated
B. maintain FGF >10 L/min
C. increase RR
D. keep the patient warm
A. have HOB slightly elevated
B. maintain FGF >10 L/min
C. increase RR
D. keep the patient warm