The nurse is preparing a client with breast cancer for BRCA1 and BRCA2 genetic testing. Which pathophysiological process should the nurse use to support client teaching?
The choice of treatment is best determined by the sensitivity of these genetic markers.
BRCA1 and BRCA2 provide protection of mature, functioning breast and ovarian cells.
Mutations in BRCA1 or BRCA2 identify a client’s risk for cancerous cell development in breast tissue.
The prognosis of breast cancer is most successful when these markers are inherited mutations.
The Correct Answer is C
Choice A rationale
While the sensitivity of genetic markers can influence the choice of treatment, it is not the primary pathophysiological process involved in BRCA1 and BRCA2 genetic testing. The main purpose of these tests is to identify genetic mutations that increase the risk of developing certain types of cancer.
Choice B rationale
BRCA1 and BRCA2 do play a role in protecting mature, functioning breast and ovarian cells. However, this is not the primary reason for conducting BRCA1 and BRCA2 genetic testing. The main purpose of these tests is to identify mutations that increase cancer risk.
Choice C rationale
This is the correct answer. Mutations in BRCA1 or BRCA2 can significantly increase a person’s risk for developing breast and ovarian cancer. Therefore, identifying these mutations through genetic testing can help determine a person’s cancer risk.
Choice D rationale
While inherited mutations in BRCA1 and BRCA2 can influence the prognosis of breast cancer, the primary purpose of BRCA1 and BRCA2 genetic testing is to identify mutations that increase cancer risk, not to determine prognosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Activating the synchronization mode is important during cardioversion to avoid delivering a shock during the vulnerable period of cardiac repolarization, which could potentially cause a life-threatening arrhythmia. However, it is not the most crucial action.
Choice B rationale
Choosing a monitor lead with a tall R wave can help ensure that the cardioverter-defibrillator can sense the patient’s intrinsic cardiac activity. However, this is not the most crucial action.
Choice C rationale
Administering the prescribed sedative is the most crucial action before initiating cardioversion. Sedation is necessary to ensure patient comfort and cooperation during the procedure, as cardioversion can be painful.
Choice D rationale
Verifying the prothrombin time (PT) is important in patients receiving anticoagulation therapy, as atrial fibrillation increases the risk of thrombus formation. However, it is not the most crucial action before initiating cardioversion.
Correct Answer is ["1.80"]
Explanation
Step 1 is to convert the patient’s weight from pounds to kilograms since the dosage is prescribed in mg/kg. We know that 1 kg is approximately 2.20462 pounds. So, the patient’s weight in kilograms is 132 pounds ÷ 2.20462 = 59.87 kg.
Step 2 is to calculate the total dosage of dantrolene needed. The prescribed dosage is 1.5 mg/kg. So, the total dosage is 1.5 mg/kg × 59.87 kg = 89.81 mg.
Step 3 is to calculate the volume of reconstituted dantrolene solution needed to provide the total dosage. The reconstituted solution has a concentration of 50 mg/mL. So, the volume needed is 89.81 mg ÷ 50 mg/mL = 1.80 mL.
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