surgery Flashcards
What is a spinal anesthesia
thin needle goes through the dura into the CSF
uses heavy bipuvocaine
needle to be able to lie flat
doesn’t affect respiratory rate
does affect BP- lowers BP (blocks autonomic, c fibers, alpha motor neurones)
don’t do it on patients with mitral or aortic stenosis
what is bier’s block
2 cuffs on the arm and intravenous regional aesthesia
what is a field block
infiltrative anesthesia
what is a brachial plexus block
inject anesthesia into the brachial plexus sheath
what are the complication that can happen with an epidural?
dural tap- hole in the dura that leaves the patient with CSF leaking out.
most common in women i obstretrics
what are the local anesthetics?
esthers: cocaine
Don’t use them (only ENT- to vasconstrict nose veins)
amiphocaine - good for skin penetration, eye drops (cornea)
amides: lidocaine (acts quickly, low pka, many unionised), bipuvocaine (local anesthetics, many ionised, doesn’t penetrates)
diamorphine - great for spinal
anesthesia over dose
ringing in ears
perioral parasthesia
heart block, brady cardium
what are common causes of an ileus
infection
opioids
what are causes of respiratory deterioration?
ALL of these because the person does not cough properly
atelectasis
pneumonia
pain- diaphramtic splinting
why do you get more atelectasis after a general anesthesia?
underventilate the basis of the bases of your lungs
lying on your back
change in breathing