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20 Cards in this Set
- Front
- Back
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The purpose of preanesthetic patient evaluation is to determine the patient's physical status. This refers to:
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the presence or absence of disease and the reserve capacity of various organ systems to withstand the stress of anesthesia/surgery.
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What are the 5 organ systems of greatest concern with anesthesia?
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1. Cardiovascular
2. Respiratory 3. Renal 4. Hepatic 5. Nervous |
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Physical status is determined by what 5 things?
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1. signalment and history
2. general inspection (attitude/conformation) 3. Physical Exam 4. lab results 5. special procedures |
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What are 5 things that should always be included in the signalment?
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1.Species
2.Breed 3. Sex 4. Age 5. Concurrent physiological considerations (preg/lactating) |
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What is a crucial piece of information that is needed for accurate dosing?
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Body weight (Lean Weight)
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What are some useful things to gather when taking a history?
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-duration of complaint
- previous anesthetic history -concurrent medications -duration since last meal |
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Oxygen delivery is a function of what two things?
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Cardiac Output X arterial oxygen content
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Cardiac Output is a function of what two things?
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Stroke Volume and Heart Rate
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According to Starling's law, if Preload were to Increase, Stroke Volume would:
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Increase
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According to Starling's law, if Afterload were to increase, cardiac output would:
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decrease
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What three things have an effect on Stroke Volume?
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Preload
Afterload Contractility of the heart |
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Since Stroke Volume is hard to monitor, what is a surrogate to it, that can easily be monitored?
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Arterial Blood Pressure
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Arterial Blood Pressure is a function of what two things?
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Cardiac Output X Systemic Vascular Resistance
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What are the normal values for oxygen delivery?
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20-30ml/kg/minute
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Since only a portion of the oxygen delivered is consumed, what would a normal value for oxygen consumption be?
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4-10ml/kg/minute
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What is a normal oxygen extraction ratio?
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20-30%
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What is a normal dog's HR?
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60-140 bpm
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What is a normal cat's HR?
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140-220 bpm
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What is a normal horse's HR?
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30-40 bpm
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What is a normal cattle HR?
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60-80 bpm
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