Stages of Anesthesia Flashcards
Define Stage I of Anesthesia
The beginning of induction of general anesthesia to loss of consciousness
What is the first plane of Stage I of anesthesia?
No amnesia or analgesia
What is the second plane of Stage I of anesthesia?
Amnestic, but only partially analgesic
What is the third plane of Stage I of anesthesia?
Complete analgesia and amnesia
Define Stage II of Anesthesia
Loss of consciousness to onset of automatic breathing
In which stage would you extubate the patient?
Stage I
In what stage does aspiration occur?
Stage II
In what stage do you want to spend the least time in?
Stage II
How many planes are in Stage I?
3
What reflex is lost during Stage II?
Eyelash
Along with coughing, vomiting, and struggling, what other symptoms may you see in Stage II?
Breath holding and irregular respirations
Define Stage III of Anesthesia
Onset of automatic respiration to respiratory paralysis (surgical plane)
How many planes are in Stage III?
4
What is the first plane of Stage III of anesthesia?
Automatic respiration to cessation of eyeball movement
What is the second plane of Stage III of anesthesia?
Cessation of eyeball movement to beginning of intercostal muscle paralysis and increased lacrimation
What is the third plane of Stage III of anesthesia?
Beginning to completion of intercostal muscle paralysis; pupil dilation
What is the desired stage to administer an NMBD?
Stage III, plane 3
What is the fourth plane of Stage III of anesthesia?
Complete intercostal muscle paralysis to diaphragmatic paralysis (apnea)
Define Stage IV of Anesthesia
Stoppage of respiration until death
