The parents of a 3-month old infant with cystic fibrosis (CF) want to know how their child got this disease, because no one in either of their families has CF. What is the nurse's best response based on the understanding of CF?
Both parents are carrier of the CF gene
The inheritance pattern is multifactorial
The result is probably a genetic mutation
Only one parent carries the CF gene
The Correct Answer is A
A. Both parents are carriers of the CF gene: Cystic fibrosis follows an autosomal recessive inheritance pattern, meaning both parents must carry one copy of the defective gene, even if they do not have the disease themselves. The child inherits one copy of the defective gene from each parent to develop CF.
B. The inheritance pattern is multifactorial: CF is not a multifactorial disease; it follows a clear recessive genetic inheritance pattern.
C. The result is probably a genetic mutation: CF is caused by a genetic mutation, but this mutation is inherited from both parents. It is not usually a spontaneous mutation unless it occurs in the parental genetic material, which is rare.
D. Only one parent carries the CF gene: For the child to inherit CF, both parents must be carriers of the gene. If only one parent carries the gene, the child would be a carrier, not affected by the disease.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["C","D","G"]
Explanation
- A. Provide oxygen at 6 L/min via nasal cannula: Oxygen is only used if the patient has hypoxemia (O2 saturation below 92%), which is not indicated in this scenario.
B. Perform passive ROM exercises: Not appropriate during a sickle cell crisis due to the risk of exacerbating pain.
C. Administer IV fluids: Essential to reduce blood viscosity and prevent further sickling.
D. Obtain consent for a blood transfusion: Necessary in severe anemia (e.g., hemoglobin of 5 g/dL).
E. Restrict fluid intake to 1,400 mL/day: Fluid restriction is contraindicated; hydration is key to management.
F. Administer meperidine IV: Meperidine is generally avoided due to the risk of neurotoxicity; other opioids (e.g., morphine) are preferred.
G. Encourage bedrest: Reduces oxygen demand during a crisis.
Correct Answer is C
Explanation
A. Inhaled steroid: Inhaled corticosteroids are used for long-term control of asthma and are not typically used during an acute asthma attack. They work by reducing inflammation, but they do not provide immediate relief of bronchoconstriction.
B. Oral leukotriene modifiers: Leukotriene modifiers are used for long-term asthma management, but they are not effective in providing quick relief during an acute asthma attack.
C. Inhaled beta agonist: Beta agonists (e.g., albuterol) are the first-line treatment for quick relief during an asthma attack. They work by relaxing the muscles around the airways to improve airflow and relieve symptoms like chest tightness and coughing.
D. Oral steroids: Oral steroids (e.g., prednisone) are used for severe asthma exacerbations, but they are not used as the first-line treatment for quick relief of symptoms like tight chest and cough. They take time to reduce inflammation.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.