VT 17 Anesthetic Maintenance – Flashcards
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During anesthetic maintenance what four assessments should be made?
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Neurologic responses, cardiovascular function, respiratory function, and body temperature
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When determining anesthetic depth, what six neurologic responses may be used?
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Behavior, reflexes, jaw tone, eye position, pupil size and light response, and response to surgical stimulation
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What neurologic response generally diminish or cease with increasing anesthetic depth, is the most useful indicator of anesthetic depth, and there is some variation with type of anesthetic.
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Reflexes
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What neurologic response can not be used with Atropine?
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Pupil size, because the pupils are already dilated
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Jaw tone is stronger in patients under what drug?
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Ketamine
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List the stages of anesthesia
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I-sedation, II-excitement, III-surgical, and IV-overdose
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Stage III Plane 1 is used for what type of procedure?
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Mass removal
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Stage III Plane 2 is used for what type of procedure?
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Spay/Castration
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Stage III Plane 3 is used for what type of procedure?
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Orthopedic
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Stage III Plane 4 is used for what type of procedure?
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Nothing, excessively deep
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Patients will pass through which stages twice in a surgery?
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Stages I and II
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In which plane are reflexes diminished (may respond to surgical stimuli), and HR is regular but RR is decreased?
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Plane 2
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What is the normal heart rate for a dog? Under anesthesia?
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Normal: 70-180 bpm and Under anesthesia: >80 bpm
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What is the normal heart rate for a cat? Under anesthesia?
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Normal: 150-240bpm and Under anesthesia: >100 bpm
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What does electrocardiograpghy not measure?
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Effectiveness of contraction
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Name four devices used to monitor heart rate and rhythm
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External stethoscope, esophageal stethoscope, electrocardiogram, and doppler
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What is the normal systolic blood pressure of a dog/cat? Under anesthesia?
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Normal: 110-160mm Hg Under anesthesia: >80mm Hg
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What is the normal diastolic blood pressure of a dog/cat? Under anesthesia?
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Normal: 60-100mm Hg Under anesthesia: >60mm Hg
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When the BP is at what mm Hg he brain and kidneys are not being perfused?
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<60 mm Hg
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Under anesthesia which BP (systolic or diastolic) drops more than the other?
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Systolic pressure drops more than diastolic
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What devices may be used to monitor blood pressure?
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Doppler, sphigmomanometer, oscillometric monitor
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What is the normal respiratory rate for a dog? Under anesthesia?
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Normal: 15-25 rpm Under anesthesia: >8 rpm
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What is the normal respiratory rate for a cat? Under anesthesia?
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Normal: 20-30 rpm Under anesthesia: >8 rpm
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What is considered bradycardia in dogs? Cats?
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Dogs: <60 bpm Cats: <100 bpm
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What is considered tachycardia in dogs? Cats?
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Dogs: >160 bpm Cats: >200 bpm
