MCQ Sample

Please download to get full document.

View again

of 8
205 views
PDF
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Document Description
THERAPEUTICS 133 7.1 1 1 1 1 1 1 1 1 1 1 Which of the following statements are correct? A B C D E Flumazenil is a benzodiazepine agonist Flumazenil is a benzodiazepine antagonist Benzodiazepines are commonly used anxiolytic drugs Benzodiazepines may be used in the treatment of epilepsy Carbamazepine is a benzodiazepine 7.2 Which of the following statements are correct? A B C D E Lidocaine 0.2% with 1:80 000 adrenaline (epinephrine) is a commonly used dental local anaesthetic Lidocaine has
Document Share
Documents Related
Document Tags
Document Transcript
  7.1Which of the following statements are correct? 1 A Flumazenil is a benzodiazepine agonist 1 B Flumazenil is a benzodiazepine antagonist 1 C Benzodiazepines are commonly used anxiolytic drugs 1 D Benzodiazepines may be used in the treatment of epilepsy 1 E Carbamazepine is a benzodiazepine 7.2Which of the following statements are correct? 1 A Lidocaine 0.2% with 1:80 000 adrenaline (epinephrine) is a commonlyused dental local anaesthetic 1 B Lidocaine has a longer lasting anaesthetic effect than bupivacaine 1 C Plain lidocaine provides more pronounced dental anaesthesia thanlidocaine with adrenaline 1 D Prilocaine 3% with 0.03 IU/ml felypressin is a commonly used dentallocal anaesthetic 1 E Lidocaine must be stored at 4 °C 7.3Which of the following statements are correct? 1 A  A 2.2 ml cartridge of 2% lidocaine and 1:80 000 adrenaline contains 4.4mg of lidocaine 1 B Lidocaine and prilocaine contain an ester group 1 C Esters are less likely to cause allergic reactions than amides 1 D  Amide local anaesthetics are metabolised by the liver 1 E Prilocaine has a much higher toxicity than lidocaine 133THERAPEUTICS  7.1BCD Benzodiazepines are central nervous system depressants and act as sedatives,hypnotics, anxiolytics and anti-convulsants. Flumazenil is a benzodiazepineantagonist, commonly used to reverse the action of midazolam. Although having aname that sounds similar to benzodiazepine, carbamazepine is not abenzodiazepine. 7.2D Lidocaine 2% with 1:80 000 adrenaline is a commonly used dental local anaesthetic.It has a more pronounced effect than lidocaine alone as adrenaline causesvasoconstriction, which prevents the solution dispersing away from the site of action.Bupivacaine is a longer lasting local anaesthetic than lidocaine. 7.3D  A 2% solution will contain 20 mg/ml, so a 2.2 ml cartridge contains 44 mg of lidocaine. Lidocaine and prilocaine contain an amide group, and as such are lesslikely to cause an allergic reaction than an ester-containing local anaesthetic.Lidocaine has higher toxicity than prilocaine. 134MCQS FOR DENTISTRY  7.4Which of the following drugs interact with warfarin and may increasea patient’s international normalised ratio (INR)? 1 A Fluconazole 1 B Vitamin K  1 C Metronidazole 1 D Erythromycin 1 E Oral contraceptives 7.5Non-steroidal anti-inflammatory drugs (NSAIDs) are best avoided in: 1 A Patients with a history of gastric bleeding 1 B  Asthmatic patients 1 C Patients who are hypersensitive to aspirin 1 D Children under the age of 6 years due to the possibility of Reye’ssyndrome 1 E Patients on paracetamol 7.6Penicillins: 1 A  Are the antibiotic of choice for anaerobic infections 1 B Interfere with bacterial cell wall synthesis 1 C  Are bacteriocidal 1 D  Are antagonistic to tetracycline 1 E Rarely cause allergic reactions 135THERAPEUTICS  7.4ACD Fluconazole, erythromycin and metronidazole may interact with warfarin andpotentiate its action. The oral contraceptive pill and vitamin K may interact withwarfarin, but they reduce its effect hence lowering the INR. 7.5ABCD NSAIDs should be avoided in any patient with a history of hypersensitivity to aspirinor any other NSAID. They should also be avoided in patients with gastric/duodenalulceration, and if it is necessary to prescribe them, then they should be given inconjunction with a selective inhibitor of cyclo-oxygenase–2 or gastroprotectivetreatment. Reye’s syndrome can be caused by patients under the age of 16 yearstaking aspirin and hence it should be avoided in children. Patients on paracetamolcan take NSAIDs as well as they have different modes of action and do not interact. 7.6BCD The penicillins all act by interfering with bacterial cell wall synthesis, by inhibitingcross-linking of the mucopeptides in the cell wall and as such are bacteriocidal.Bacteria are attacked when cells are dividing and so in theory antibiotics that arebacteriostatic would decrease the efficacy of bacteriocidal drugs. However, thisdoesn’t often cause a problem but tetracycline and penicillin are antagonistic andshould not be used at the same time. Metronidazole is the antibiotic of choice foranaerobic infections. 136MCQS FOR DENTISTRY
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks