Monitoring Flashcards
CO
HR x SV (5-6 L/min)
SV
EDV-ESV
50-100 ml/beat
EF
EDV - ESV / EDV x 100
60-70%
MAP
2x DBP + SBP
SVR
MAP - CVP / CO x 80
800-1500
SA and AV nodes conduction
SLOW
Myocardial muscle cells conduction
INTERMEDIATE
Bundle of His and Purkinje conduction
FAST
Easiest way to determine axis deviation
lead 1 and aVF
Red light (660nm)
absorbed by deoxyhemoglobin (higher in venous blood)
Near-infrared light (940nm)
absorbed by oxyhemoglobin (higher in arterial blood)
A > 25% from cerebral oximetry from baseline
suggests a reduction in cerebral oxygenation
Complete suppression of isoelectricity occurs at _______.
1.5-2 MAC
brain waves Associated w/ GA, deep sleep and brain ischemia
DELTA
3 waves for GA
THETA, DELTA, Burst supression
Ketamine increases _____________ activity, this can produce a BIS value that is __________ than the level of sedation/ anesthesia would otherwise suggest
-high frequency activity
-higher
Stages of intraoperative heat transfer
1 = heat redistribution from core to periphery
2 = heat transfer > heat production
3 = heat transfer = heat production
Meds for post-op shivering
meperidine, clonidine, dexmedetomidine
Haloganeted agents alone
< 2ppm
Nitrous alone
< 25 ppm
Halogenated agents + nitrous oxide should be
< 0.5 ppm an 25 ppm