Which of the following is a poor surface anaesthetic: A. Procaine B. Lignocaine C. Tetracaine D. Benoxinate

Which of the following is a poor surface anaesthetic:
A. Procaine
B. Lignocaine
C. Tetracaine
D. Benoxinate
by

1 Answer

Answer :

A. Procaine
by

Related questions

Choose the local anaesthetic that is specifically used to produce corneal anaesthesia for tonometry: A. Tetracaine B. Oxethazaine C. Ropivacaine D. Benoxinate

Description : Choose the local anaesthetic that is specifically used to produce corneal anaesthesia for tonometry: A. Tetracaine B. Oxethazaine C. Ropivacaine D. Benoxinate

Last Answer : D. Benoxinate

The following local anaesthetic is poorly water soluble, PABA derivative and primarily used for anorectal lesions, wounds and ulcers: A. Benzocaine B. Dibucaine C. Procaine D. Benoxinate

Description : The following local anaesthetic is poorly water soluble, PABA derivative and primarily used for anorectal lesions, wounds and ulcers: A. Benzocaine B. Dibucaine C. Procaine D. Benoxinate

Last Answer : A. Benzocaine

Which of the following statements is true for lignocaine: A. It is an ester-linked local anaesthetic B. It is not likely to exhibit cross-sensitivity with procaine C. It has a shorter duration of action than procaine D. It is not a surface anaesthetic

Description : Which of the following statements is true for lignocaine: A. It is an ester-linked local anaesthetic B. It is not likely to exhibit cross-sensitivity with procaine C. It has a shorter duration of action than procaine D. It is not a surface anaesthetic

Last Answer : B. It is not likely to exhibit cross-sensitivity with procaine

The local anaesthetic having high cardiotoxic and arrhythmogenic potential is: A. Lignocaine B. Procaine C. Bupivacaine D. Ropivacaine

Description : The local anaesthetic having high cardiotoxic and arrhythmogenic potential is: A. Lignocaine B. Procaine C. Bupivacaine D. Ropivacaine

Last Answer : C. Bupivacaine

The following local anaesthetic raises BP instead of tending to cause a fall: A. Cocaine B. Dibucaine C. Lignocaine D. Procaine

Description : The following local anaesthetic raises BP instead of tending to cause a fall: A. Cocaine B. Dibucaine C. Lignocaine D. Procaine

Last Answer : A. Cocaine

The anaesthetic action of thiopentone sodium is characterised by: A. Good muscle relaxation B. Poor analgesia C. Sensitization of heart to adrenaline D. No postoperative residual CNS depression

Description : The anaesthetic action of thiopentone sodium is characterised by: A. Good muscle relaxation B. Poor analgesia C. Sensitization of heart to adrenaline D. No postoperative residual CNS depression

Last Answer : B. Poor analgesia

Select the correct statement about nitrous oxide: A. It irritates the respiratory mucosa B. It has poor analgesic action C. It is primarily used as a carrier and adjuvant to other anaesthetics D. It frequently induces post anaesthetic nausea and retching

Description : Select the correct statement about nitrous oxide: A. It irritates the respiratory mucosa B. It has poor analgesic action C. It is primarily used as a carrier and adjuvant to other anaesthetics D. It frequently induces post anaesthetic nausea and retching

Last Answer : C. It is primarily used as a carrier and adjuvant to other anaesthetics

The following general anaesthetic has poor muscle relaxant action: A. Ether B. Nitrous oxide C. Halothane D. Isoflurane

Description : The following general anaesthetic has poor muscle relaxant action: A. Ether B. Nitrous oxide C. Halothane D. Isoflurane

Last Answer : B. Nitrous oxide

Which of the following is not a semisynthetic penicillin: A. Procaine penicillin B. Ampicillin C. Cloxacillin D. Carbenicillin

Description : Which of the following is not a semisynthetic penicillin: A. Procaine penicillin B. Ampicillin C. Cloxacillin D. Carbenicillin

Last Answer : A. Procaine penicillin

The penicillin G preparation with the longest duration of action is: A. Benzathine penicillin B. Sodium penicillin C. Potassium penicillin D. Procaine penicillin

Description : The penicillin G preparation with the longest duration of action is: A. Benzathine penicillin B. Sodium penicillin C. Potassium penicillin D. Procaine penicillin

Last Answer : A. Benzathine penicillin

The drug that can directly release histamine from mast cells without involving antigen-antibody reaction is: A. Aspirin B. Procaine C. Morphine D. Sulfadiazine

Description : The drug that can directly release histamine from mast cells without involving antigen-antibody reaction is: A. Aspirin B. Procaine C. Morphine D. Sulfadiazine

Last Answer : C. Morphine

The drug that can directly release histamine from mast cells without involving antigen-antibody reaction is: A. Aspirin B. Procaine C. Morphine D. Sulfadiazine

Description : The drug that can directly release histamine from mast cells without involving antigen-antibody reaction is: A. Aspirin B. Procaine C. Morphine D. Sulfadiazine

Last Answer : C. Morphine

The local anaesthetics having amide linkage differ from those having ester linkage in that the amidelinked local anaesthetics: A. Are not surface anaesthetics B. Have a shorter duration of action C. Are degraded in the plasma D. Do not show cross-sensitivity with esterlinked local anaesthetic

Description : The local anaesthetics having amide linkage differ from those having ester linkage in that the amidelinked local anaesthetics: A. Are not surface anaesthetics B. Have a shorter duration of action C. Are degraded in the plasma D. Do not show cross-sensitivity with esterlinked local anaesthetic

Last Answer : D. Do not show cross-sensitivity with esterlinked local anaesth

Started within 4-6 hours of acute myocardial infarction, which of the following drug(s) can reduce the area of necrosis and the attendant mortality: A. Propranolol B. Glyceryl trinitrate C. Lignocaine D. Both ‘A’ and ‘B’ are correct

Description : Started within 4-6 hours of acute myocardial infarction, which of the following drug(s) can reduce the area of necrosis and the attendant mortality: A. Propranolol B. Glyceryl trinitrate C. Lignocaine D. Both ‘A’ and ‘B’ are correct

Last Answer : D. Both ‘A’ and ‘B’ are correct

Which of the following drugs depresses automaticity of SA node as well as ectopic foci, abbreviates action potential duration of Purkinje fibres, and slows atrioventricular conduction: A. Propranolol B. Lignocaine C. Procainamide D. Bretylium

Description : Which of the following drugs depresses automaticity of SA node as well as ectopic foci, abbreviates action potential duration of Purkinje fibres, and slows atrioventricular conduction: A. Propranolol B. Lignocaine C. Procainamide D. Bretylium

Last Answer : A. Propranolol

Select the drug which is used by intravenous infusion for emergency control of tachycardia and sudden rise in blood pressure: A. Amiodarone B. Lignocaine C. Esmolol D. Disopyramide

Description : Select the drug which is used by intravenous infusion for emergency control of tachycardia and sudden rise in blood pressure: A. Amiodarone B. Lignocaine C. Esmolol D. Disopyramide

Last Answer : C. Esmolo

The following is an orally active lignocaine congener used for both acute as well as chronic ventricular arrhythmias: A. Mexiletine B. Flecainide C. Moricizine D. Propafenone

Description : The following is an orally active lignocaine congener used for both acute as well as chronic ventricular arrhythmias: A. Mexiletine B. Flecainide C. Moricizine D. Propafenone

Last Answer : A. Mexiletine

Lignocaine is the preferred antiarrhythmic for emergency control of cardiac arrhythmias following acute myocardial infarction because: A. It has a rapidly developing and titratable antiarrhythmic action B. It causes little myocardial depression and hypotension C. It has broad spectrum antiarrhythmic efficacy in atrial as well as ventricular arrhythmias D. Both ‘A’ and ‘B’ are correct

Description : Lignocaine is the preferred antiarrhythmic for emergency control of cardiac arrhythmias following acute myocardial infarction because: A. It has a rapidly developing and titratable antiarrhythmic action B. It causes ... atrial as well as ventricular arrhythmias D. Both A' and B' are correct

Last Answer : D. Both ‘A’ and ‘B’ are correct

yocardial Na+ channel blockade by lignocaine has the following characteristic: A. It blocks inactivated Na+ channels more than activated channels B. It blocks activated Na+ channels more than inactivated channels C. It delays rate of recovery of Na+ channels D. It produces more prominent blockade of atrial than ventricular Na+ channels

Description : yocardial Na+ channel blockade by lignocaine has the following characteristic: A. It blocks inactivated Na+ channels more than activated channels B. It blocks activated Na+ channels more than inactivated ... Na+ channels D. It produces more prominent blockade of atrial than ventricular Na+ channels

Last Answer : A. It blocks inactivated Na+ channels more than activated channels

The most significant feature of the antiarrhythmic action of lignocaine is: A. Suppression of phase-4 depolarization in ventricular ectopic foci B. Prolongation of action potential duration C. Prolongation of effective refractory period D. Depression of membrane responsiveness

Description : The most significant feature of the antiarrhythmic action of lignocaine is: A. Suppression of phase-4 depolarization in ventricular ectopic foci B. Prolongation of action potential duration C. Prolongation of effective refractory period D. Depression of membrane responsiveness

Last Answer : A. Suppression of phase-4 depolarization in ventricular ectopic foci

The following is true of procainamide except: A. It generates an active metabolite in the body B. Its plasma half-life is longer than that of quinidine C. On long-term use, it can cause systemic lupus erythematosus like illness D. It is effective in many cases of ventricular extrasystoles, not responding to lignocaine

Description : The following is true of procainamide except: A. It generates an active metabolite in the body B. Its plasma half-life is longer than that of quinidine C. On long-term use, it ... erythematosus like illness D. It is effective in many cases of ventricular extrasystoles, not responding to lignocaine

Last Answer : A. Disopyramide

The following antiarrhythmic drug has the most prominent anticholinergic action: A. Disopyramide B. Quinidine C. Procainamide D. Lignocaine

Description : The following antiarrhythmic drug has the most prominent anticholinergic action: A. Disopyramide B. Quinidine C. Procainamide D. Lignocaine

Last Answer : A. Disopyramide

The antiarrhythmic drug which decreases both rate of depolarization (phase 0) as well as rate of repolarization (phase 3) of myocardial fibres is: A. Lignocaine B. Propranolol C. Quinidine D. Verapamil

Description : The antiarrhythmic drug which decreases both rate of depolarization (phase 0) as well as rate of repolarization (phase 3) of myocardial fibres is: A. Lignocaine B. Propranolol C. Quinidine D. Verapamil

Last Answer : C. Quinidine

Select the most suitable antiarrhythmic drug for counteracting ventricular extrasystoles due to digoxin toxicity: A. Lignocaine B. Quinidine C. Verapamil D. Amiodarone

Description : Select the most suitable antiarrhythmic drug for counteracting ventricular extrasystoles due to digoxin toxicity: A. Lignocaine B. Quinidine C. Verapamil D. Amiodarone

Last Answer : A. Lignocaine

A resting nerve is relatively resistant to blockade by lignocaine compared to one which is repeatedly stimulated because: A. Lignocaine penetrates resting nerve membrane poorly B. Lignocaine binds more avidly to the inactivated Na+ channel C. Nerve impulse promotes ionization of lignocaine D. Nodes of Ranvier are inaccessible in the resting state

Description : A resting nerve is relatively resistant to blockade by lignocaine compared to one which is repeatedly stimulated because: A. Lignocaine penetrates resting nerve membrane poorly B. Lignocaine binds ... promotes ionization of lignocaine D. Nodes of Ranvier are inaccessible in the resting state

Last Answer : B. Lignocaine binds more avidly to the inactivated Na+ chan

Sensitivity of a nerve fibre to blockade by lignocaine depends on: A. Whether the fibre is sensory or motor B. Whether the fibre is myelinated or nonmyelinated C. Internodal distances in the fibre D. Both ‘B’ and ‘C’ are correct

Description : Sensitivity of a nerve fibre to blockade by lignocaine depends on: A. Whether the fibre is sensory or motor B. Whether the fibre is myelinated or nonmyelinated C. Internodal distances in the fibre D. Both ‘B’ and ‘C’ are correct

Last Answer : D. Both ‘B’ and ‘C’ are correct

Select the anaesthetic that increases cardiac output and blood pressure: A. Halothane B. Fentanyl C. Ketamine D. Diazepam

Description : Select the anaesthetic that increases cardiac output and blood pressure: A. Halothane B. Fentanyl C. Ketamine D. Diazepam

Last Answer : C. Ketamine

Residual CNS depression is least marked after the use of the following anaesthetic: A. Diazepam B. Thiopentone sodium C. Lorazepam D. Propofo

Description : Residual CNS depression is least marked after the use of the following anaesthetic: A. Diazepam B. Thiopentone sodium C. Lorazepam D. Propofo

Last Answer : D. Propofol

Select the general anaesthetic that is particularly suitable for outpatient surgery because of quick recovery and short-lived post-anaesthetic psychomotor impairment: A. Ether B. Halothane C. Enflurane D. Desflurane

Description : Select the general anaesthetic that is particularly suitable for outpatient surgery because of quick recovery and short-lived post-anaesthetic psychomotor impairment: A. Ether B. Halothane C. Enflurane D. Desflurane

Last Answer : D. Desflurane

Malignant hyperthermia is a rare complication of use of the following anaesthetic: A. Ketamine B. Thiopentone sodium C. Halothane D. Ether

Description : Malignant hyperthermia is a rare complication of use of the following anaesthetic: A. Ketamine B. Thiopentone sodium C. Halothane D. Ether

Last Answer : D. Ether

Select the general anaesthetic having the most marked uterine relaxant action: A. Propofol B. Halothane C. Nitrous oxide D. Ether

Description : Select the general anaesthetic having the most marked uterine relaxant action: A. Propofol B. Halothane C. Nitrous oxide D. Ether

Last Answer : B. Halothane

The general anaesthetic having significant cardiodepressant property is: A. Halothane B. Enflurane C. Ether D. Nitrous oxide

Description : The general anaesthetic having significant cardiodepressant property is: A. Halothane B. Enflurane C. Ether D. Nitrous oxide

Last Answer : A. Halothane

s a general anaesthetic, halothane has the following advantages except: A. Very good analgesic action B. Noninflammable and nonexplosive C. Reasonably rapid induction of anaesthesia D. Pleasant and nonirritating

Description : s a general anaesthetic, halothane has the following advantages except: A. Very good analgesic action B. Noninflammable and nonexplosive C. Reasonably rapid induction of anaesthesia D. Pleasant and nonirritating

Last Answer : A. Very good analgesic action

Ether is still used as a general anaesthetic in India, specially in peripheral hospitals because: A. It is nonexplosive B. It is pleasant smelling and nonirritating C. It induces anaesthesia rapidly D. It is cheap and can be administered without anaesthetic machine

Description : Ether is still used as a general anaesthetic in India, specially in peripheral hospitals because: A. It is nonexplosive B. It is pleasant smelling and nonirritating C. It induces anaesthesia rapidly D. It is cheap and can be administered without anaesthetic machine

Last Answer : A. It is nonexplosive

The following anaesthetic can be used by the open drop method: A. Ether B. Desflurane C. Halothane D. Isoflurane

Description : The following anaesthetic can be used by the open drop method: A. Ether B. Desflurane C. Halothane D. Isoflurane

Last Answer : A. Ether

Select the inhalational general anaesthetic which is metabolized in the body to a significant extent: A. Sevoflurane B. Isoflurane C. Ether D. Halothane

Description : Select the inhalational general anaesthetic which is metabolized in the body to a significant extent: A. Sevoflurane B. Isoflurane C. Ether D. Halothane

Last Answer : D. Halothane

'Diffusion hypoxia’ is likely to occur only after use of nitrous oxide because it: A. Is a respiratory depressant B. Has low blood solubility and is used in high concentration C. Is a very potent anaesthetic D. Interferes with diffusion of oxygen into the tissues

Description : 'Diffusion hypoxia’ is likely to occur only after use of nitrous oxide because it: A. Is a respiratory depressant B. Has low blood solubility and is used in high concentration C. Is a very potent anaesthetic D. Interferes with diffusion of oxygen into the tissues

Last Answer : B. Has low blood solubility and is used in high concentration

The following factor delays induction with an inhaled general anaesthetic: A. Alveolar perfusion-ventilation mismatch B. Hyperventilation C. Low blood:gas partition coefficient of the anaesthetic D. Inclusion of 5% carbon dioxide in the inhaled gas mixture

Description : The following factor delays induction with an inhaled general anaesthetic: A. Alveolar perfusion-ventilation mismatch B. Hyperventilation C. Low blood:gas partition coefficient of the anaesthetic D. Inclusion of 5% carbon dioxide in the inhaled gas mixture

Last Answer : A. Alveolar perfusion-ventilation mismatch

Which general anaesthetic selectively inhibits excitatory NMDA receptors: A. Thiopentone B. Halothane C. Desflurane D. Ketamine

Description : Which general anaesthetic selectively inhibits excitatory NMDA receptors: A. Thiopentone B. Halothane C. Desflurane D. Ketamine

Last Answer : D. Ketamine

he minimal alveolar concentration of an inhalational anaesthetic is a measure of its: A. Potency B. Therapeutic index C. Diffusibility D. Oil: water partition coefficient

Description : he minimal alveolar concentration of an inhalational anaesthetic is a measure of its: A. Potency B. Therapeutic index C. Diffusibility D. Oil: water partition coefficient

Last Answer : A. Potency

Epidural anaesthesia differs from spinal anaesthesia in that: A. Epidural anaesthesia produces less cardiovascular complications B. Headache is more common after epidural anaesthesia C. Blood concentrations of the local anaesthetic are lower after epidural anaesthesia D. Greater separation between sensory and motor blockade can be obtained with epidural anaesthes

Description : Epidural anaesthesia differs from spinal anaesthesia in that: A. Epidural anaesthesia produces less cardiovascular complications B. Headache is more common after epidural anaesthesia C. Blood ... . Greater separation between sensory and motor blockade can be obtained with epidural anaesthes

Last Answer : D. Greater separation between sensory and motor blockade can be obtained with epidural anaesthesia

The duration of spinal anaesthesia depends on each of the following except: A. Which local anaesthetic is used B. Concentration of the local anaesthetic used C. Posture of the patient D. Whether adrenaline has been added to the local anaesthetic

Description : The duration of spinal anaesthesia depends on each of the following except: A. Which local anaesthetic is used B. Concentration of the local anaesthetic used C. Posture of the patient D. Whether adrenaline has been added to the local anaesthetic

Last Answer : C. Posture of the patient

The segmental level of spinal anaesthesia depends on: A. Volume of the local anaesthetic injected B. Specific gravity of the local anaesthetic solution C. Posture of the patient D. All of the above factors

Description : The segmental level of spinal anaesthesia depends on: A. Volume of the local anaesthetic injected B. Specific gravity of the local anaesthetic solution C. Posture of the patient D. All of the above factors

Last Answer : D. All of the above factors

n which of the following techniques the concentration of the local anaesthetic used is the lowest: A. Infiltration anaesthesia B. Nerve block anaesthesia C. Spinal anaesthesia D. Epidural anaesthesia

Description : n which of the following techniques the concentration of the local anaesthetic used is the lowest: A. Infiltration anaesthesia B. Nerve block anaesthesia C. Spinal anaesthesia D. Epidural anaesthesia

Last Answer : A. Infiltration anaesthesia

Adrenaline added to local anaesthetic solution for infiltration anaesthesia affords the following except: A. Prolongs the duration of local anaesthesia B. Makes the injection less painful C. Provides a more bloodless field for surgery D. Reduces systemic toxicity of the local anaesthetic

Description : Adrenaline added to local anaesthetic solution for infiltration anaesthesia affords the following except: A. Prolongs the duration of local anaesthesia B. Makes the injection less painful C. Provides a more bloodless field for surgery D. Reduces systemic toxicity of the local anaesthetic

Last Answer : B. Makes the injection less painful

Injection of adrenaline along with a local anaesthetic serves the following purpose: A. Lowers the concentration of the local anaesthetic to produce nerve block B. Prolongs the duration of local anaesthesia C. Increases the anaesthetised area D. Reduces the local toxicity of the local anaesthetic

Description : Injection of adrenaline along with a local anaesthetic serves the following purpose: A. Lowers the concentration of the local anaesthetic to produce nerve block B. Prolongs the duration of local anaesthesia C. Increases the anaesthetised area D. Reduces the local toxicity of the local anaesthetic

Last Answer : B. Prolongs the duration of local anaesthesia

Which sensation is blocked first by low concentrations of a local anaesthetic: A. Pain B. Temperature C. Touch D. Deep pressure

Description : Which sensation is blocked first by low concentrations of a local anaesthetic: A. Pain B. Temperature C. Touch D. Deep pressure

Last Answer : A. Pain

The following is not true of local anaesthetics: A. The local anaesthetic is required in the unionized form for penetrating the neuronal membrane B. The local anaesthetic approaches its receptor only from the intraneuronal face of the Na+ channel C. The local anaesthetic binds to its receptor mainly when the Na+ channel is in the resting state D. The local anaesthetic combines with its receptor in the ionized cationic form

Description : The following is not true of local anaesthetics: A. The local anaesthetic is required in the unionized form for penetrating the neuronal membrane B. The local anaesthetic approaches its receptor ... the resting state D. The local anaesthetic combines with its receptor in the ionized cationic form

Last Answer : C. The local anaesthetic binds to its receptor mainly when the Na+ channel is in the resting state

Which local anesthetic should be used to treat symptoms of pain, itching, burning, and disconfort in patients with an established lidocaine allergy? (a) Tetracaine (b) Dibucaine (c) Pramoxine (d) Benzocaine

Description : Which local anesthetic should be used to treat symptoms of pain, itching, burning, and disconfort in patients with an established lidocaine allergy? (a) Tetracaine (b) Dibucaine (c) Pramoxine (d) Benzocaine

Last Answer : Ans: C

Nitrous Oxide (N2O) is not used alone as a general anaesthetic agent because of:** A. Difficulties in maintaining an adequate O2 concentration B. Adverse affects on liver C. Poor analgesics affects

Description : Nitrous Oxide (N2O) is not used alone as a general anaesthetic agent because of:** A. Difficulties in maintaining an adequate O2 concentration B. Adverse affects on liver C. Poor analgesics affects

Last Answer : C. Poor analgesics affects