ANS Flashcards
SNS orgin
thoracolumbar
PNS orgin
craniosacral
cranial nerves of PNS
III, V, IX, X
NT of PNS
Ach
NT of SNS
NA (main) , Adr, Ach, Dopamine
SNS action on eye, heart, glands, secretion, BV, male genitalia
eye- mydriasis
heart- increases HR & CO
sec dec
git dec
BV vasoconstict
male genitalia ejection
________ drug blocks muscarinic receptors
Atropine
_____ drug
~used to Rx pheochromocytoma
~inhibits tyrosine hydroxylase
ME TYRO SINE
_____ transports NA from postganglia to renal medula
S- ADENO SYL METHIO NINE
adnergic receptors and site _ fn
alpha 1 -
prostate-ejaculate, eye-mydriasis, BV- vasoconst
alpha2-
autoregulator
beta 1-
heart- inc HR, kidney- inc renin
beta 2-
vasodil, lung -bronchorel, ut- tocolytics, skl muscle- tremors
beta3-
inc blood glucose
centrally acting sympatholytic used as anti hypertensive
CLO NI DINE
patient on clonidine suddenly stops taking it what will happen
rebound htn
reason for
non selective beta blocker dangerous in t2dm
- masks warning signs of hypoglycemia
- blocks recovery of hypoglycemia
beta 3 agonist used in overactive bladder
MIRA BE GRONE
dobutamine is the DOC
cardiogenic shock
in cardiogenic shock the DOC, if S.BP
<90
>90
<90 NA
>90 dobutamine
can catecholamines or non catecholamines be given via oral route and why
no
broken down, they also can’t cross the BBB
DOC for acute hypotension
NA
name a prodrug which is used in orthostatic hypotension
DROXI DOPA
(prodrug of NA)
can adrenaline be given via IV during a cardiac arrest?
risk involved?
yes
risk of cerebral hemorrhage
heart block DOC
atropine > iso pra na line
alpha 1 agonists
me phen ter mine
mido drine - orthostatic htn
phenyl eph e rine - mydriatic cycloplegic
used in nasal decongestant -> long use atrophic rhinitis
oxometa zoline
xylo meta zoline
napha zoline
alpha 2 agoinists
clonidine - use: central htn
moxo nidine - “
tiza nidine - use: muscle relaxant
dex e mede - use: sedation in icu pt
methyl dopa - use: PIH (labetalol > M.dopa)
DOC for orthostatic htn
fluro corti sone
