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Anaesthesia: Definition and Types

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Questions and Answers

What is the primary purpose of topical anaesthetics?

To provide general anaesthesia for major surgeries

To treat chronic pain conditions

To numb a specific area of the body for minor procedures (correct)

To induce sedation during medical procedures

What is the primary mechanism of action for local anaesthetic agents?

Blocking potassium channels at the nerve endings

Increasing the synthesis of endorphins

Activating GABA receptors in the brain

Inhibiting sodium channels at the nerve endings (correct)

What is the main difference between local anaesthesia and general anaesthesia?

Local anaesthesia is used for minor procedures, while general anaesthesia is used for major surgeries

Local anaesthesia causes loss of consciousness, while general anaesthesia does not

Local anaesthesia affects a specific area of the body, while general anaesthesia affects the entire body (correct)

Local anaesthesia is administered orally, while general anaesthesia is administered intravenously

What is the main reason local anaesthetics are primarily used for minor outpatient procedures?

Because their effects are short-lived Signup and view all the answers

What is the mechanism by which local anaesthetics prevent pain?

By blocking nerve impulse conduction near their site of administration Signup and view all the answers

What is the primary advantage of using nerve blocks over local injections?

Nerve blocks are more targeted to the specific area of the body Signup and view all the answers

What is the primary site of action for anaesthetic agents during medical or surgical procedures?

Sensory nerves at the site of procedure Signup and view all the answers

Which of the following is NOT a type of anaesthesia?

Surgical anaesthesia Signup and view all the answers

What is the primary effect of local anaesthesia on nerve cell membrane permeability?

Decreased permeability to sodium ions Signup and view all the answers

What is the primary role of local anaesthesia in medical procedures?

To prevent pain during medical procedures Signup and view all the answers

What is the primary difference between local injection and nerve block anaesthesia?

Site of injection Signup and view all the answers

What is the primary advantage of using topical anaesthetics?

They can be applied directly to the skin or mucus membranes Signup and view all the answers

Which of the following anaesthetic agents is NOT a member of the amides group?

Cocaine Signup and view all the answers

What is the primary reason why sedatives are used in anaesthesia?

To relieve anxiety and pain Signup and view all the answers

What is the primary disadvantage of using local anaesthesia?

It is primarily used for minor outpatient procedures Signup and view all the answers

What is the primary route of administration for inhalation anaesthesia?

Inhalation Signup and view all the answers