L1: Intro to Anesthesia (Granone) Flashcards
3 main classes of anesthetic techniques
- local anesthesia (topical, infiltration, localized nerve blocks, etc.)
- regional anesthesia (epidural, regional IV anesthesia)
- general anesthesia
goals of anesthesia
- ensure adequate anesthesia
- ensure the patient is in the optimal state for the procedure to be performed
- ensure patient safety and survival
anesthesia
loss of sedation of a particular body part or the whole body.
-induced by drugs that depress the activity of the nervous system either peripherally or centrally
general anesthesia
state of unconsciousness prod. by controlled, reversible drug administration that causes inhibition of the CNS which results in the absence of pain sensation, muscle relaxation
- goal = produce unconsciousness, amnesia, m. relaxation, analgesia
- usually maintained with inhalants and induced with injectables
balanced anesthesia
the state of surgical anesthesia that is achieved by the use of 2 or more drugs or anesthetic techniques (local anesthesia), each of which contributes its own pharm. effects
-provides the effects that correspond to the components of general anesthesia
adv. of balanced anesthesia
- allows for a lighter plane of anesthesia than may be possible with the administration of a single agent
- results in more stable CV and pulmonary fx
preanesthetic assessment
- Hx
- physical condition
- physical exam
ASA Physical Status 1
normal healthy patient
ie. neutering, routine dental prophylaxis
ASA Physical Status 2
patient with mild systemic disease (ie. minor fractures, slight dehydration, skin tumors, asymptomatic heart murmurs)
ASA Physical Status 3
patient with severe systemic disease (ie. chronic heart disease, anemia, severe fractures, chronic kidney disease)
ASA Physical Status 4
patient with severe systemic disease that is a constant threat to life. (ie. ruptured urinary bladder, closed pyometra, diaphragmatic hernia)
ASA Physical Status 5
a moribound patient who is not expected to survive without the operation (ie. severe shock)
what can be done to relieve pneumothorax
thoracocentesis
ketamine is a dissociative anesthetic
:)