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 ["0.8"]
Explanation
Step 1: Convert the client’s weight from pounds to kg. 1 kg is approximately 2.2 lbs. So, 176 lbs
÷ 2.2 = 80 kg (rounded to the nearest whole number).
Step 2: Calculate the total mg of enoxaparin sodium needed per day. The prescription is for 1.5 mg/kg/day. So, 80 kg × 1.5 mg/kg/day = 120 mg/day.
Step 3: Calculate the mL of enoxaparin sodium needed. The medication is available in a 120 mg/0.8 mL prefilled syringe. So, 120 mg ÷ 120 mg/0.8 mL = 0.8 mL. The nurse should administer 0.8 mL.
Correct Answer is D
Explanation
The correct answer is Choice D.
Brief Introduction This scenario requires applying knowledge of chest tube dynamics and respiratory physiology during patient positioning. Sudden dyspnea in a patient with a hemopneumothorax indicates a potential obstruction in the drainage system, necessitating immediate troubleshooting of the tubing to ensure lung re-expansion and prevent tension pneumothorax or fluid accumulation.
Choice A rationale: Reinforcing the connection with tape is a preventive measure to maintain system integrity. However, it does not address the immediate cause of sudden acute respiratory distress following a position change, which is more likely related to a mechanical obstruction in the tubing rather than a connection failure.
Choice B rationale: Clamping a chest tube is generally contraindicated as it can rapidly lead to a tension pneumothorax by preventing the escape of air and fluid from the pleural space. This action would likely worsen the patient's anxiety and shortness of breath by increasing intrapleural pressure.
Choice C rationale: An occlusive dressing is only applied if the chest tube is accidentally dislodged from the insertion site. Since the scenario implies the tube is still in place but the patient became symptomatic during a turn, applying a dressing over an intact tube is an incorrect intervention.
Choice D rationale: Turning a patient can cause the chest tubing to kink or create dependent loops that trap fluid. This obstruction prevents the drainage of air and blood, leading to sudden respiratory distress. Ensuring the tubing is patent and straight is the immediate priority to restore proper pleural suction.
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