Nokea
The reason that the hematocrit is so high is
- A. chronic hypoxia
- B. it was taken in a low cardiac output state
- C. it was a peripheral finger stick
- D. embolic stroke
Correct Answer: A
Rationale: Chronic hypoxia leads to secondary polycythemia as a compensatory mechanism.
You may also like to solve these questions
The nurse is planning a hypertension-prevention program. What should be the main focus of the nurse when presenting information?
- A. Pharmacological treatment
- B. Surgical interventions available
- C. Patient education
- D. Reduction of aerobic exercise
Correct Answer: C
Rationale: The main focus of a hypertension-prevention program is patient education.
Acute laryngotracheobronchitis in children:
- A. Needs to be treated by broad-spectrum antibiotics
- B. Humidified oxygen by tent needs to be administered in infancy
- C. Dexamethasone is known to shorten the duration of illness
- D. Adrenaline by nebuliser is absolutely contraindicated
Correct Answer: C
Rationale: Dexamethasone, a corticosteroid, is known to reduce inflammation and shorten the duration of illness in acute laryngotracheobronchitis (croup).
Nystagmus can be a presenting sign in:
- A. Partial albinism
- B. Retinopathy of prematurity
- C. Acute vestibulitis
- D. Medulloblastoma
Correct Answer: D
Rationale: Medulloblastoma, a type of brain tumor, can present with nystagmus due to its impact on the cerebellum and brainstem.
In systemic mastocytosis:
- A. Areas of depigmentation occur
- B. Intermittent flushing is seen
- C. IgE levels are high
- D. Is relieved by aspirin
Correct Answer: B
Rationale: Intermittent flushing is a recognized symptom of systemic mastocytosis due to the release of histamine and other chemicals from mast cells.
Examples of encapsulated organisms are all except:
- A. Pseudomonas
- B. Proteus
- C. Pneumococci
- D. Salmonella
Correct Answer: A
Rationale: The correct answer is A because Pseudomonas is not an encapsulated organism. The other options (b-e) are encapsulated.