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EQ anesthesia

2011 AAEP Focus on Dentistry & other articles

QuestionAnswer
What are 3 potential complications of a regional infraorbital nerve block within the pterygopalatine fossa hematoma exopthalmos blindness
What dose (volume) of lidocaine is suggested for the efbi infraorbital block? 2 ml/100 kg
What is the normal resting lactate in adult horses? < 2 mmol/L
What causes increased lactate? hypoxemia, often secondary to decreased tissue perfusion
How/when is lactate produced? anaerobic glycolysis
What is the recommended dose of hypertonic saline for intravascular volume resucitation? 2L/500 kg horse
What duration of benefit is gained by hypertonic saline bolus? about 45 minutes
What is the max rate of oral fluid administration (when given continuously as a trickle)? 10L/hr
What is the average tolerated oral fluid bolus rate when given intermittently? 5L q2 hours
how much blood volume expansion is achieved by each liter of hypertonic saline? about 4.5L (because of volume redistribution from the extracellular space into the intravascular space)
What is a shock dose of crystalloid fluids for a horse? (60 to 90mL/kg or 30-45L pe r500kg horse)
What is the volume of the extracellular fluid compartment compared to the intravascular fluid compartment? ECF is ~ 3X the IVC
What is the average blood volume of a healthy 500 kg horse? 40L
What is the total intravascular fluid expansion achieved by each 1L of hetastarch? 2L (1L hetastarch + 1L redistributed ECF)
What is the maximally effective fluid resucitation approach for Eq fluid? 4 mL/kg hetastarch + 4 mL/kg hypertonic saline (better than either one alone)
Created by: lamarron