CHAPTER 12: GENETICS AND GENOMICS
Chapter 12: Genetics and Genomics
LEWIS:
Lewis: MEDICAL-SURGICAL
Medical-Surgical 10TH EDITIONNURSING,
Nursing, 10th Edition
MULTIPLE CHOICE
1. The sister of a patient diagnosed with BRCA gene–related breast cancer asks the nurse, “Do
you think I should be tested for the gene?” Which response by the nurse is most appropriate?
a. “In most cases, breast cancer is not caused by having the BRCA gene.”
b. “It depends on how you will feel if the test is positive for the BRCA gene.”
c. “There are many things to consider before deciding to have genetic testing.”
d. “You should decide first whether you are willing to have a bilateral mastectomy.”
ANS: C
Although presymptomatic testing for genetic disorders allows patients to take action (e.g.,
mastectomy) to prevent the development of some genetically caused disorders, patients also
need to consider that test results in their medical record may affect insurance, employability,
and so on. Telling a patient that a decision about mastectomy should be made before testing
implies that the nurse has made a judgment about what the patient should do if the test result
is positive. Although the patient may need to think about her reaction if the test is positive,
other issues (e.g., insurance) also should be considered. Although most breast cancers are not
related to BRCA gene mutations, the patient with a BRCA gene mutation has a markedly
increased risk for breast cancer.
DIF: Cognitive Level: Analyze (analysis) REF: 188
TOP: Nursing Process: Implementation MSC: NCLEX: Physiological Integrity
2. When counseling a couple in which the man has an autosomal recessive disorder and the
woman has no gene for the disorder, the nurse uses Punnett squares to show the couple the
probability of their having a child with the disorder. Which statement by the nurse is accurate?
a. “Each child would be a carrier of the disorder.”
b. “Each child would have 50% chance of having the disorder.”
c. “Your male children would display characteristics of the disorder.”
d. “Your female children would display characteristics of the disorder.”
ANS: A
When one parent has an autosomal recessive disorder and the other parent has no genes for the
autosomal recessive disorder, the children will be carriers of the autosomal recessive disorder.
The children will not have the disorder or display characteristics of the disorder, regardless of
gender.
DIF: Cognitive Level: Apply (application) REF: 181
TOP: Nursing Process: Implementation MSC: NCLEX: Physiological Integrity
3. A patient with a family history of cystic fibrosis (CF) asks for information about genetic
testing. Which response by the nurse is most appropriate?
a. Refer the patient to a qualified genetic counselor.
b. Ask the patient why genetic testing seems necessary.
c. Remind the patient that genetic testing has many social implications.
d. Tell the patient that cystic fibrosis is an autosomal recessive disorder.
This study source was downloaded by 100000849838140 from CourseHero.com on 09-01-2022 12:32:53 GMT -05:00
https://www.coursehero.com/file/27821273/chapter-12-genetic-and-genomicsdocx/
Chapter 12: Genetics and Genomics
LEWIS:
Lewis: MEDICAL-SURGICAL
Medical-Surgical 10TH EDITIONNURSING,
Nursing, 10th Edition
MULTIPLE CHOICE
1. The sister of a patient diagnosed with BRCA gene–related breast cancer asks the nurse, “Do
you think I should be tested for the gene?” Which response by the nurse is most appropriate?
a. “In most cases, breast cancer is not caused by having the BRCA gene.”
b. “It depends on how you will feel if the test is positive for the BRCA gene.”
c. “There are many things to consider before deciding to have genetic testing.”
d. “You should decide first whether you are willing to have a bilateral mastectomy.”
ANS: C
Although presymptomatic testing for genetic disorders allows patients to take action (e.g.,
mastectomy) to prevent the development of some genetically caused disorders, patients also
need to consider that test results in their medical record may affect insurance, employability,
and so on. Telling a patient that a decision about mastectomy should be made before testing
implies that the nurse has made a judgment about what the patient should do if the test result
is positive. Although the patient may need to think about her reaction if the test is positive,
other issues (e.g., insurance) also should be considered. Although most breast cancers are not
related to BRCA gene mutations, the patient with a BRCA gene mutation has a markedly
increased risk for breast cancer.
DIF: Cognitive Level: Analyze (analysis) REF: 188
TOP: Nursing Process: Implementation MSC: NCLEX: Physiological Integrity
2. When counseling a couple in which the man has an autosomal recessive disorder and the
woman has no gene for the disorder, the nurse uses Punnett squares to show the couple the
probability of their having a child with the disorder. Which statement by the nurse is accurate?
a. “Each child would be a carrier of the disorder.”
b. “Each child would have 50% chance of having the disorder.”
c. “Your male children would display characteristics of the disorder.”
d. “Your female children would display characteristics of the disorder.”
ANS: A
When one parent has an autosomal recessive disorder and the other parent has no genes for the
autosomal recessive disorder, the children will be carriers of the autosomal recessive disorder.
The children will not have the disorder or display characteristics of the disorder, regardless of
gender.
DIF: Cognitive Level: Apply (application) REF: 181
TOP: Nursing Process: Implementation MSC: NCLEX: Physiological Integrity
3. A patient with a family history of cystic fibrosis (CF) asks for information about genetic
testing. Which response by the nurse is most appropriate?
a. Refer the patient to a qualified genetic counselor.
b. Ask the patient why genetic testing seems necessary.
c. Remind the patient that genetic testing has many social implications.
d. Tell the patient that cystic fibrosis is an autosomal recessive disorder.
This study source was downloaded by 100000849838140 from CourseHero.com on 09-01-2022 12:32:53 GMT -05:00
https://www.coursehero.com/file/27821273/chapter-12-genetic-and-genomicsdocx/
