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CNS | Agent | Fentanyl | Sufentanil | Alfentanil | Remifentanil |
| Analgesia | Jannsen Hypothesis |
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| Selective mu | |
| 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 | |
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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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