Prepare with MCQs on drugs used in anesthetics, including general and local anesthetics. Cover key mechanisms, uses, and side effects to excel in your exams.
- What is the primary purpose of anesthesia?
- A) To relieve stress
- B) To induce insensitivity to pain
- C) To increase heart rate
- D) To enhance immune response
- Answer: B
- Which of the following is a characteristic of general anesthesia?
- A) Localized effect
- B) Total unconsciousness
- C) Reduced heart rate
- D) Increased muscle tone
- Answer: B
- Local anesthesia is commonly used for:
- A) Major surgeries
- B) Dental procedures
- C) Treating infections
- D) Chemotherapy
- Answer: B
- Halothane belongs to which category of anesthetics?
- A) Local anesthetics
- B) Intravenous anesthetics
- C) Inhaled anesthetics
- D) Topical anesthetics
- Answer: C
- Which stage of anesthesia is characterized by loss of consciousness without pain?
- A) Stage of analgesia
- B) Stage of excitement
- C) Stage of surgical anesthesia
- D) Stage of medullary depression
- Answer: A
- What is the primary action of local anesthetics like lidocaine?
- A) Block voltage-gated sodium channels
- B) Enhance GABA receptor sensitivity
- C) Increase acetylcholine release
- D) Stimulate opioid receptors
- Answer: A
- Benzodiazepines are used as anesthetics primarily for:
- A) Pain relief
- B) Muscle relaxation and sedation
- C) Increasing heart rate
- D) Enhancing liver function
- Answer: B
- The mechanism of action of halothane includes:
- A) Blocking sodium channels
- B) Enhancing GABA receptor activity
- C) Stimulating opioid receptors
- D) Inhibiting acetylcholine release
- Answer: B
- Which type of anesthesia is used for minor surgical procedures?
- A) General anesthesia
- B) Local anesthesia
- C) Intravenous anesthesia
- D) Epidural anesthesia
- Answer: B
- What is a common adverse effect associated with halothane use?
- A) Hypertension
- B) Malignant hyperthermia
- C) Constipation
- D) Diarrhea
- Answer: B
- Lidocaine is typically administered with epinephrine to:
- A) Shorten the duration of action
- B) Increase systemic absorption
- C) Reduce local blood flow
- D) Enhance cardiac activity
- Answer: C
- Which drug is known for rapid induction of anesthesia via IV administration?
- A) Lidocaine
- B) Halothane
- C) Thiopental
- D) Sevoflurane
- Answer: C
- The stage of medullary depression in anesthesia is characterized by:
- A) Analgesia without amnesia
- B) Loss of consciousness
- C) Severe respiratory and cardiovascular depression
- D) Muscle rigidity
- Answer: C
- Inhaled anesthetics are most commonly used to:
- A) Maintain anesthesia
- B) Treat infections
- C) Induce muscle contraction
- D) Increase oxygen levels
- Answer: A
- Which of the following anesthetics is primarily used as a local anesthetic?
- A) Halothane
- B) Lidocaine
- C) Thiopental
- D) Propofol
- Answer: B
- Benzodiazepines provide sedation by:
- A) Blocking sodium channels
- B) Enhancing GABA-mediated inhibition
- C) Increasing norepinephrine release
- D) Blocking calcium channels
- Answer: B
- A major risk of using inhaled anesthetics is:
- A) Hypoglycemia
- B) Malignant hyperthermia
- C) Increased renal function
- D) Constipation
- Answer: B
- The addition of epinephrine to lidocaine serves to:
- A) Dilate local blood vessels
- B) Decrease systemic toxicity
- C) Shorten anesthetic effect duration
- D) Increase bleeding
- Answer: B
- Which of the following is an inhaled anesthetic?
- A) Lidocaine
- B) Thiopental
- C) Isoflurane
- D) Diazepam
- Answer: C
- Local anesthetics primarily block nerve conduction by:
- A) Inhibiting calcium influx
- B) Blocking sodium channels
- C) Activating potassium channels
- D) Enhancing chloride ion flow
- Answer: B
- The use of benzodiazepines in anesthesia aims to:
- A) Increase blood pressure
- B) Cause rapid muscle contraction
- C) Provide sedation and amnesia
- D) Enhance sensory perception
- Answer: C
- Malignant hyperthermia is associated with:
- A) Local anesthetics
- B) Inhaled anesthetics
- C) Benzodiazepines
- D) Opioid analgesics
- Answer: B
- What is a characteristic effect of intravenous anesthetics?
- A) Delayed onset
- B) Rapid induction
- C) Poor muscle relaxation
- D) Slow metabolism
- Answer: B
- Which stage of anesthesia involves muscle relaxation and loss of reflexes?
- A) Stage of analgesia
- B) Stage of excitement
- C) Stage of surgical anesthesia
- D) Stage of medullary depression
- Answer: C
- The role of GABA in anesthesia is to:
- A) Stimulate nerve conduction
- B) Inhibit neuronal excitability
- C) Increase heart rate
- D) Enhance muscle contraction
- Answer: B
- Epidural anesthesia is commonly used in:
- A) Cardiac surgeries
- B) Dental procedures
- C) Labor and delivery
- D) Eye surgeries
- Answer: C
- Which anesthetic agent is known for its rapid onset and short duration?
- A) Halothane
- B) Lidocaine
- C) Propofol
- D) Sevoflurane
- Answer: C
- General anesthesia typically induces:
- A) Awareness and reflex enhancement
- B) Unconsciousness and loss of sensation
- C) Muscle tightening
- D) Respiratory stimulation
- Answer: B
- A side effect of local anesthetics includes:
- A) Bradycardia
- B) Hypertension
- C) Neural toxicity
- D) Hyperglycemia
- Answer: C
- Benzodiazepines are often administered before surgery to:
- A) Induce anesthesia
- B) Provide analgesia
- C) Reduce anxiety
- D) Increase muscle tone
- Answer: C
