The nurse is counseling a couple who would like to start a family. The man has sickle cell disease and the woman does not have sickle cell disease or the sickle cell trait. Which statement by the man indicates an understanding of the transmission of the disease?
A) "All our children will have the sickle cell trait."
B) "Each child has a 50% chance of having the sickle cell trait."
C) "Each child has a 50% chance of having sickle cell disease."
D) "Each child has a 50% chance of not having the trait."
A) "All our children will have the sickle cell trait."
Explanation: A) Sickle cell disease occurs when an individual has inherited a mutated form of hemoglobin, referred to as hemoglobin S (HbS), from both parents; thus, the man in the couple must have two copies of HbS if he has sickle cell disease. When a mutated form is inherited from one parent (in this case, the father) and a normal copy (hemoglobin A) is inherited from the other (in this case, the mother), this is referred to as sickle cell trait. All offspring of such parents will have the trait.
B) Each child will have a 50% chance of inheriting the trait if one parent has the trait and the other parent is normal.
C) Each child will have a 50% chance of inheriting sickle cell disease when one parent has the disease and the other parent has the trait.
D) If one parent has sickle cell trait and the other parent is normal, each child has a 50% chance of not having the trait or disease.
You might also like to view...
A patient has a head injury and is presenting with signs and symptoms of increased intracranial pressure. Which nursing intervention would be helpful in reducing this pressure?
a. Place the neck in a neutral position to promote venous drainage. b. Suction hourly to stimulate the cough reflex. c. Add extra blankets to keep the patient warm. d. Turn the patient frequently to prevent skin impairment.
A patient with metastatic cancer has had several fractures secondary to bone metastases. The provider orders denosumab [Xgeva]. What will the nurse teach this patient?
a. Denosumab may delay healing of these fractures. b. Denosumab should be given subcuta-neously every 12 months. c. Denosumab will improve hypocalcemia. d. Unlike bisphosphonates, denosumab does not increase osteonecrosis of the jaw (ONJ).
An infertile patient has received two 5-day courses of clomiphene [Clomid] to help her conceive. An ultrasound 1 week after the last dose reveals that follicular maturation has occurred without ovulation
The nurse expects the next step for this patient to be: a. administration of human chorionic gona-dotropin (hCG). b. an order for cabergoline to be given twice weekly. c. evaluation of ovarian and pituitary func-tion. d. repeating clomiphene once daily for 5 days.
A client is in the emergency department after experiencing kidney trauma. The abdomen is tender and distended, and blood is visible at the urinary meatus. Which action by the nurse is most appropriate?
a. Assess vital signs and abdominal pain every 5 to 15 minutes. b. Consult with the provider before inserting a catheter. c. Monitor the client's IV rate and prepare to give blood. d. Assist with obtaining informed consent for surgery if needed.