Test Bank for Pharmacotherapeutics for Advanced Practice Nurse Prescribers 5th Edition Woo Robinson Questions And Answers A+graded.pdf

PHARMACOTHERAPEUTICS nFORnADVANCEDnPRACTICE nNURSEnPRESCRIBERS ,QUESTI
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Chapter 1. n n




An Introduction to Pharmacogenetics
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Multiple Choice n



Identify the choice that best completes the statement or answers the question.
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n 1. Genetic polymorphisms account for differences in metabolism, including:
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1. Poor metabolizers, who lack a working enzyme
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2. Intermediate metabolizers, who have one working, wild-type allele and one mutant
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3. Extensive metabolizers, with two normally functioning alleles
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4. All of the above
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n 2. Up to 21% of Asians are ultra-rapid 2D6 metabolizers, leading to:
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1. A need to monitor drugs metabolized by 2D6 for toxicity
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2. Increased dosages needed of drugs metabolized by 2D6, such as the s
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elective seroto reuptake inhibitors n n n



3. Decreased conversion of codeine to morphine by CYP 2D6
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4. The need for lowered dosages of drugs, such as beta blockers
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n 3. Rifampin is a nonspecific CYP450 inducer that may:
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1. Lead to toxic levels of rifampin and must be monitored closely
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2. Cause toxic levels of drugs, such as oral contraceptives, when coadministered
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3. Induce the metabolism of drugs, such as oral contraceptives, leading to therapeutic
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PHARMACOTHERAPEUTICS nFORnADVANCEDnPRACTICE nNURSEnPRESCRIBERS ,QUESTI
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, PHARMACOTHERAPEUTICS nFORnADVANCEDnPRACTICE nNURSEnPRESCRIBERS ,QUESTI
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4. Cause nonspecific changes in drug metabolism
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n 4. Inhibition of P-glycoprotein by a drug such as quinidine may lead to:
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1. Decreased therapeutic levels of quinidine
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2. Increased therapeutic levels of quinidine
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3. Decreased levels of a coadministered drug, such as digoxin, that req
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uires P-glycoprabsorption and elimination
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4. Increased levels of a coadministered drug, such as digoxin, that requ
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ires P-glycopro absorption and elimination
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n 5. Warfarin resistance may be seen in patients with VCORC1 mutation, leading to:
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1. Toxic levels of warfarin building up
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2. Decreased response to warfarin n n n



3. Increased risk for significant drug interactions with warfarin
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4. Less risk of drug interactions with warfarin
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nnnn6. Genetic testing for VCORC1 mutation to assess potential warfar
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in resistance is requiredprior to prescribing warfarin.
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1. True
2. False
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nnnn7. Pharmacogenetic testing is required by the U.S. Food and Drug
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Administration prior toprescribing: n n n



1. Erythromycin
PHARMACOTHERAPEUTICS nFORnADVANCEDnPRACTICE nNURSEnPRESCRIBERS ,QUESTI
ONSn&nANSWERS nFULLYnANALYSEDnEDITIONnEXAMn100%nCORRECTLY/VERIFIEDnANS
WERS nWITHnSATISFACTIONnGUARANTEEDnSUCCESS nLATEST nUPDATE n2023n5THnEDITI
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,PHARMACOTHERAPEUTICS nFORnADVANCEDnPRACTICE nNURSEnPRESCRIBERS ,QUESTI
ONSn&nANSWERS nFULLYnANALYSEDnEDITIONnEXAMn100%nCORRECTLY/VERIFIEDnANS
WERS nWITHnSATISFACTIONnGUARANTEEDnSUCCESS nLATEST nUPDATE n2023n5THnEDITI
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2. Digoxin
3. Cetuximab




PHARMACOTHERAPEUTICS nFORnADVANCEDnPRACTICE nNURSEnPRESCRIBERS ,QUESTI
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, PHARMACOTHERAPEUTICS nFORnADVANCEDnPRACTICE nNURSEnPRESCRIBERS ,QUESTI
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4. Rifampin
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8. Carbamazepine has a Black Box Warning recommending testing fo
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r the HLA-
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B*1502 allelein patients with Asian ancestry prior to starting therapy due
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n to:
1. Decreased effectiveness of carbamazepine in treating seizures in Asian patients wit
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HLA-B*1502 allele n



2. Increased risk for drug interactions in Asian patients with the HLA-B*1502 allele
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3. Increased risk for Stevens-Johnson syndrome in Asian patients with HLA-B*1502 a
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4. Patients who have the HLA-
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B*1502 allele being more likely to have a resistance tocarbamazepi
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ne
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9. A genetic variation in how the metabolite of the cancer dru
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g irinotecan SN-38 isinactivated by the body may lead to:
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1. Decreased effectiveness of irinotecan in the treatment of cancer
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2. Increased adverse drug reactions, such as neutropenia
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3. Delayed metabolism of the prodrug irinotecan into the active metabolite SN-38
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4. Increased concerns for irinotecan being carcinogenic
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n 10. Patients who have a poor metabolism phenotype will have:
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1. Slowed metabolism of a prodrug into an active drug, leading to accumulation of pr
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PHARMACOTHERAPEUTICS nFORnADVANCEDnPRACTICE nNURSEnPRESCRIBERS ,QUESTI
ONSn&nANSWERS nFULLYnANALYSEDnEDITIONnEXAMn100%nCORRECTLY/VERIFIEDnANS
WERS nWITHnSATISFACTIONnGUARANTEEDnSUCCESS nLATEST nUPDATE n2023n5THnEDITI
ONnWOOnROBINSONnTESTnBANKnGRADEDnA+