The clinically used local anaesthetics have the following common features except:
The local anaesthetics having amide linkage differ from those having ester linkage in that the amide linked local anaesthetics:
1. The site of action of d-tubocurarine is:
The segmental level of spinal anaesthesia depends on:
The local anaesthetic having high cardiotoxic and arrhythmogenic potential is:
Surface anaesthesia is used for the following except:
Sensitivity of a nerve fibre to blockade by lignocaine depends on:
Which sensation is blocked first by low concentrations of a local anaesthetic
Local anaesthetics block nerve conduction by:
The following is a skeletal muscle relaxant that acts as a central α2 adrenergic agonist:
Which of the following drugs undergoes ‘Hofmann’ elimination:
Pancuronium differs from tubocurarine in that:
The fall in blood pressure caused by d-tubocurarine is due to:
Neuromuscular blocking drugs do not produce central actions because:
Spinal anaesthesia is not suitable for:
The following antibiotic accentuates the nuromuscular blockade produced by pancuronium:
Choose the local anaesthetic that is specifically used to produce corneal anaesthesia for tonometry:
In which of the following techniques the concentration of the local anaesthetic used is the lowest:
Diazepam is used as a muscle relaxant for:
The following is a skeletal muscle relaxant that acts as a central α2 adrenergic agonist:
The following local anaesthetic is poorly water soluble, PABA derivative and primarily used for anorectal lesions, wounds and ulcers:
The duration of spinal anaesthesia depends on each of the following except:
Which of the following is a centrally acting skeletal muscle relaxant:
Which of the following is not the reason for greater susceptibility of smaller sensory fibres to blockade by local anaesthetics than larger motor fibres:
Which of the following is applicable to mivacurium:
Neostigmine reverses the following actions of d-tubocurarine except:
