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CNS | Agent | Fentanyl | Sufentanil | Alfentanil | Remifentanil |
Analgesia | Jannsen Hypothesis |
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Euphoria |
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Sedation |
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CTZ stim |
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Miosis |
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EEG | Seizure activity | Seizure activity< | Seizure activity |
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Mm rigidity | With large rapid iv |
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CBF | autoreg |
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| ↓ | |
ICP | ↑20 press autoreg | ↑20 press autoreg |
| 0 | |
Resp | Vminute | Ion trapping in stomach or reestablish V/Q relationship → late resp depression |
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RR |
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TV |
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Response CO2 | Potent depressant |
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Cough reflex | Protussive large dose |
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Ciliary activity |
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Raw |
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CVS | CO | cardiostable |
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BP | ↓MAP |
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SVR | minimal |
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Barorec reflex | ↓↓ |
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HR | ↓↓ |
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Contractility |
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Venodilatation |
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Arrhythmias |
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Mechanisms | Profound vagotonic |
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GIT | Motility |
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Gastric empty |
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Biliary spasm | 3 x morphine (3%) |
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LES tone |
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Mechanism |
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Renal | Blood flow |
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Ureteric peristalsis |
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Detrusor tone |
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Sphincter tone |
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ADH |
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Obste- trics | Uterine tone |
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Placental T/F |
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Side effects | His release | No | No |
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Other |
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Interactions | Potentiate benzos |
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Drug dependence | Tolerance |
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Dependence |
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Withdrawal |
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Category: Pharmacology Notes
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