Nokea
All the following antimalarials act by forming heme complexes which are toxic to the parasite except
- A. Primaquine
- B. Chloroquine
- C. Mefloquine
- D. Quinidine
Correct Answer: A
Rationale: Primaquine does not act by forming heme complexes; it works through a different mechanism.
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A nurse assesses a client who had a myocardial infarction and is hypotensive. Which additional assessment finding should the nurse expect?
- A. Heart rate of 120 beats/min
- B. Cool, clammy skin
- C. Oxygen saturation of 90%
- D. Respiratory rate of 8 breaths/min
Correct Answer: A
Rationale: A heart rate of 120 beats/min (tachycardia) is a common compensatory response to hypotension following a myocardial infarction, as the body attempts to maintain cardiac output.
Which assessment would lead the nurse to suspect that a newborn infant has a ventricular septal defect?
- A. A loud, harsh murmur with a systolic thrill
- B. Cyanosis when crying
- C. Blood pressure higher in the arms than in the legs
- D. A machinery-like murmur
Correct Answer: A
Rationale: A loud, harsh murmur combined with a systolic thrill is characteristic of a ventricular septal defect.
Left axis deviation of the QRS complex is associated with all the following except
- A. Inflow ventricular septal defect
- B. Pulmonary atresia with intact interventricular septum
- C. Double outlet right ventricle with subaortic ventricular septal defect
- D. Noonan syndrome with pulmonary stenosis
Correct Answer: A
Rationale: Left axis deviation is not typically associated with inflow ventricular septal defect.
A father asks why his child with tetralogy of Fallot seems to favor a squatting position. What is the nurse’s best response?
- A. Squatting increases the return of venous blood back to the heart.
- B. Squatting decreases arterial blood flow away from the heart.
- C. Squatting is a common resting position when a child is tachycardic.
- D. Squatting increases the workload of the heart.
Correct Answer: A
Rationale: The squatting position allows the child to breathe more easily because systemic venous return is increased.
The nurse calculates the body mass index (BMI) for an obese adult. Which additional assessment finding places the client at high risk for cardiac disease?
- A. Large waist circumference with central fat
- B. High serum insulin level
- C. Hyperpigmentation on neck skin folds
- D. Poor muscle tone
Correct Answer: A
Rationale: A large waist circumference with central fat is associated with an increased risk for cardiac disease due to visceral fat accumulation.