6 Miscellaneous Flashcards
Beta and alpha waves
Beta- high freq low voltage, awake and light anes. Alpha- awake but restful state
Theta and delta waves
Theta- ga and children in normal sleep. Delta- ga, deep sleep, brain ischemia
Burst sup
Ga, hypothermia, CPB, ischemia
How brain waves change during anes
Induction and light anes inc beta. Theta and delta during ga. If deep —> burst sup. 1.5-2 mac can be isoelectric
How NO and sevo effect eeg
NO- beta wave. Sevo-epileptic eeg
How etomidate and ketamine effect eeg
Etomidate shouldn’t cause epilept eeg. Ketamine can inc frequency- pt may be deeper than eeg suggests
What BIS 100, 80, and 40-60 mean
100 awake, 80 light to mod sedation, 40-60 GA
BIS 40 and 20
40- deep hypnotic, 20- burst suppression
How deeper anes effects BIS eeg waveform
Lower frequency and higher employed
Macroshock: 1, 5, 10-20, 50, 100
1 touch perfection. 5 max harmless. 10-20 let go current. 50= LOC. 100= Vfib
Michroshock: 10, 100
Max allowable leak= 10. 100= vfib
Or grounded or ungrounded: power, equipment
Power not grounded, equipment grounded