Nokea
Restrictive cardiomyopathy (RCM) is characterized by all the following EXCEPT
- A. normal ventricular chamber dimensions
- B. normal myocardial wall thickness
- C. preserved systolic function
- D. normal atrial chamber dimensions
Correct Answer: D
Rationale: Restrictive cardiomyopathy is characterized by impaired ventricular filling and high diastolic pressures despite normal systolic function.
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A healthcare worker with no known exposure to tuberculosis has received a Mantoux tuberculosis skin test. The nurse's assessment of the test after 62 hours indicates 5 mm of erythema without induration. What is the best initial nursing action?
- A. Document negative results in the client's medical record
- B. Repeat the test immediately on the opposite forearm
- C. Notify the healthcare provider for further evaluation
- D. Schedule the worker for a chest X-ray
Correct Answer: A
Rationale: Erythema without induration is not considered a positive result. Documentation of negative findings is appropriate.
Features predisposing to NEC (necrotising enterocolitis) in the neonatal period include:
- A. Short fixation
- B. Asphyxia
- C. Umbilical artery catheter
- D. Maternal Crohn's disease
Correct Answer: B
Rationale: Asphyxia is a known risk factor for necrotizing enterocolitis (NEC) due to its effect on intestinal blood flow, leading to bowel ischemia and increased risk of bacterial translocation.
The child becomes unresponsive. The most likely underlying lesion is
- A. cardiomyopathy
- B. anomalous coronary artery
- C. tetralogy of Fallot
- D. constipation
Correct Answer: C
Rationale: Tetralogy of Fallot can cause hypoxic spells leading to unresponsiveness.
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.
Regarding cough receptors:
- A. There is increased sensitivity in viral infections
- B. ~2-agonists decrease the sensitivity of cough receptors
- C. Exercise can stimulate the cough receptors in asthmatics
- D. They are predominantly seen in the large airways
Correct Answer: A
Rationale: Cough receptor sensitivity increases during viral infections, leading to heightened cough reflex.