Inhaled Anaesthetics

Cardiovascular system

CNS

Renal system

Hepatic system

uterus

Halothane

• Decreased blood pressure
• Sensitized myocardium for arrhythmogenic effects of catecholamines

• Fast induction into smooth muscles.
• Stadium II of anaesthesia is absent.

• Does not affect the renal system

• Metabolism takes place in the liver so there is a risk for hepatotoxicity

• Decreased muscle contractions
• Used for external twisting of baby

Enflurane

• Less effects than halothane
• No sensitization of the myocardium

• Fast induction of smooth muscles
• Convulsions can happen

Isoflurane

• Even less suppression than halothane and enflurane
• No sensitization of the myocardium

• Fast induction
• Fast recovery

Desflurane

• Less suppressing effects than halothane and enflurane

• Fast induction and recovery
• Increased cerebral blood flow
• Increased intercranial pressure

Sevoflurane

• Less supressing effects than halothane and enflurane

• Fast induction and recovery
• Increased cerebral blood flow
• Increased intercranial pressure

• Does not affect the renal system

• Hepatic metabolism
• Chemically unstable

Nitrous Oxide

• No effects

• Weak anaesthetic
• Potent analgesic
• Causes amnesia