Monitoring Flashcards
What are considered the big 5 for monitoring?
ECG, BP, Capnography, pulseoximetry & temperature
Almost 50% anesthesia related death occur in what period?
post-op
What stage of anesthesia do you want to perform surgery?
Stage 3- avoid deep phase
The CRT is prolonged, what does that mean?
Vasoconstriction
What are the ranges for hypotension in SA & LA?
<65 mmHg in SA, <75 mmHg in LA
What does hypertension lead to?
Can result in retinopathy, renal DZ & encephalopathy
Is pulse palpation accurate interpretation of BP?
No, subjective estimation of pulse pressure; this can be high with low pressure d/t vasodilation
What is the appropriate method of detecting blood pressure cuff size?
should be 40-60% of the circumference of the extremity
What inaccuracies occur with improper cuff size?
o Larger cuff–> false low pressure
o Smaller cuff–> false high pressure
What arteries are involved with direct BP monitoring?
o SA: dorsal metatarsal (dorsopedal)- most used artery
o Equine: transverse facial or metatarsal artery
What is Pao2?
this is the partial pressure of O2 dissolved in arterial blood.
- Normal ranges from 80-110 mmHg
What are the sources of interference in pulse ox?
vasoconstriction, electrocautery & pigmentation
Where can a pulse ox be placed?
Tongue, lip, vulva, prepuce, base of tail & rectum
- pigmented tissue affect readings!
Why does animal temp drop with general anesthesia?
anesthesia inhibits vasoconstriction, which allows for body heat redistribution (core to periphery; core is normally 2-3 Celsius higher) & this affects thermoreg!
What clinical signs do you see with 90-94 F hypothermia?
marked CNS depression, little anesthetic requirement, 50% reduction O2 consumption & HR/CO reduced by 40%
