OPIOIDS - IV

on 15.1.09 with 0 comments

















CNS

Agent

Fentanyl

Sufentanil

Alfentanil

Remifentanil

Analgesia

Jannsen Hypothesis





Selective mu

Euphoria









Sedation









CTZ stim









Miosis









EEG

Seizure activity

Seizure activity<

Seizure activity



Mm rigidity

With large rapid iv







CBF

autoreg





ICP

20 press autoreg

20 press autoreg



0





Resp

Vminute

Ion trapping in stomach or reestablish V/Q relationship → late resp depression







RR









TV









Response CO2

Potent depressant







Cough reflex

Protussive large dose







Ciliary activity









Raw













CVS

CO

cardiostable







BP

MAP





SVR

minimal







Barorec reflex

↓↓







HR

↓↓





Contractility









Venodilatation









Arrhythmias









Mechanisms

Profound vagotonic







GIT

Motility









Gastric empty









Biliary spasm

3 x morphine (3%)







LES tone









Mechanism













Renal

Blood flow









Ureteric peristalsis









Detrusor tone









Sphincter tone









ADH









Obste-

trics

Uterine tone









Placental T/F











Side effects

His release

No

No





Other









Interactions

Potentiate benzos







Drug dependence

Tolerance









Dependence









Withdrawal











Category: Pharmacology Notes

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