Nokea
Renin:
- A. Is secreted mainly in extrarenal tissues
- B. Secretion increases on lying supine
- C. Secretion increases with potassium
- D. Converts angiotensin I into angiotensin II
Correct Answer: D
Rationale: Renin is an enzyme produced by the kidneys that converts angiotensin I into angiotensin II which plays a key role in regulating blood pressure and fluid balance. The other options are incorrect because renin is not mainly secreted in extrarenal tissues its secretion does not increase on lying supine or with potassium and it does not regulate osmolality.
You may also like to solve these questions
Congenital toxoplasmosis is associated with:
- A. Microcephaly
- B. Chorioretinitis
- C. Sore throat
- D. Sacroileitis
Correct Answer: B
Rationale: Chorioretinitis is a common manifestation of congenital toxoplasmosis, often leading to vision problems and ocular abnormalities.
The nurse is caring for a child with persistent hypoxia secondary to a cardiac defect. The nurse recognizes that a risk exists of cerebrovascular accidents (strokes). Which is an important objective to decrease this risk?
- A. Minimize seizures
- B. Prevent dehydration
- C. Promote cardiac output
- D. Reduce energy expenditure
Correct Answer: B
Rationale: In children with persistent hypoxia, polycythemia develops. Dehydration must be prevented in hypoxemic children because it potentiates the risk of strokes. Minimizing seizures, promoting cardiac output, and reducing energy expenditure will not reduce the risk of cerebrovascular accidents.
After a hospitalization for Syndrome of Inappropriate Antidiuretic Hormone (SIADH), a client develops pontine myelinolysis. Which intervention should the nurse implement first?
- A. Reorient client to his room
- B. Place a patch on one eye
- C. Evaluate client's ability to swallow
- D. Perform range of motion exercises
Correct Answer: A
Rationale: Reorienting the client helps in managing confusion and disorientation, which are common in pontine myelinolysis.
The following statements are true of bronchiolitis:
- A. Up to 50% of patients continue to wheeze after recovery
- B. The typical pathogen is para-influenza virus
- C. Corticosteroid therapy is beneficial
- D. Tachypnoea is invariable
Correct Answer: A
Rationale: Wheezing after bronchiolitis is common. The typical pathogen is respiratory syncytial virus, not para-influenza. Corticosteroids are not routinely beneficial, and tachypnoea is common but not invariable.
A tuberculosis intradermal skin test to detect tuberculosis infection is given to a high-risk adolescent. How long after the test is administered should the result be evaluated?
- A. Immediately
- B. Within 24 hours
- C. In 48 to 72 hours
- D. After 5 days
Correct Answer: C
Rationale: The tuberculin skin test reaction peaks in 48 to 72 hours, making this the optimal time for evaluation.