HALOTHANE

CNS

• Fast smooth induction, stadiumII absent
• Increases cerebral blood flow and intracranial pressure

Autonomic

• Bradycardia

CVS

• Decreased Blood pressure
• sensitised myocardium for arythmogenic effects of catecholamines

Respiratory

• No saliva, bronchial secretions or cough

Musculo-skeletal 

• Skeletal muscle relaxing effects stadium III
• Increases action non-depolarisation
• Decreased action depolarisation
• Post-operative shaking - Hypoxia

Uterus

• Decreased muscle contractions
• External twisting of baby

Liver

• Hepatotoxic (rare, unpredictable)

ENFLURANE

CNS

• Fast, smooth induction convulsions

CVS

• No sensitisation of the myocardium
• Les suppression than Halothane

Respiratory

• More decrease than halothane

ISOFLURANE

CNS

• Faster induction and recovery than halothane

CVS

• Less suppression than halothane and enflurane
• No sensitisation of myocardium

Respiratory

• Potent decreasing effect
• Strengthens because of potent skeletal muscle relaxing effect

DESFLURANE

CNS

• Even faster induction and recovery than isoflurane
• Increased cerebral blood flow and intracranial pressure

CVS

• Less suppression than halothane and enflurane

Respiratory

• Strong smell
• Irritate airways
• If used as induction drug it leads to cough
• Shortness of breath 
• Laryngospasm

SEVOFLURANE

Musculo-skeletal

• Potentiate the effects of the non-depolarising muscle relaxants like the other halogenated ethers

NITROUS OXIDE

CNS

• Weak anesthetic
• Potent analgesic
• Amnesia

CVS

• No effect

Respiratory

• Pure nitrous oxide causes hypoxia
• Always ix with oxygen or air.
• Recovery phase: fast diffusion from blood to alveoli

Musculo-skeletal

• No skeletal muscle relaxation