Nokea
The tricuspid valve is in closed position corresponding to which of the following curves of central venous pressure:
- A. a' wave
- B. x descent
- C. x' descent
- D. y descent
Correct Answer: B
Rationale: The tricuspid valve is closed during the x descent of the central venous pressure curve.
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The following are causes of congestive heart failure and cardiomegaly during the newborn period but no murmur EXCEPT
- A. endocardial fibroelastosis
- B. asphyxia
- C. glycogen storage disease (Pompe disease)
- D. sepsis
Correct Answer: D
Rationale: Sepsis can cause heart failure and cardiomegaly but often presents with other systemic signs.
A toddler who has been hospitalized for vomiting due to gastroenteritis is sleeping and difficult to wake up. Assessment reveals: HR: 220 beats per minute (regular) Respiratory rate: 30 per minute BP: 84/52 Capillary refill: 3 seconds Which dysrhythmia does the nurse suspect in this child?
- A. Rapid pulmonary flutter
- B. Sinus bradycardia
- C. Rapid atrial fibrillation
- D. Supraventricular tachycardia (SVT)
Correct Answer: D
Rationale: SVT is typically above 200 beats per minute and can result from dehydration; the rapid rate causes low cardiac output (CO), resulting in low BP and prolonged capillary refill.
Which comment made by a parent of a 1-month-old infant would alert the nurse about the presence of a congenital heart defect?
- A. “He is always hungry.â€
- B. “He tires out during feedings.â€
- C. “He is fussy for several hours every day.â€
- D. “He sleeps all the time.â€
Correct Answer: B
Rationale: Fatigue during feeding or activity is common to most infants with congenital cardiac problems.
Childhood schizophrenia is suggested by:
- A. Disturbance in movement patterns
- B. Persistent thumb sucking
- C. Hallucinations
- D. Infantile autism
Correct Answer: C
Rationale: Hallucinations are a key feature of childhood schizophrenia. Movement disturbances and thumb sucking are nonspecific, and infantile autism is a separate condition.
One of the following is a characteristic physical finding in patients with an ASD
- A. a right precordial bulge
- B. a fixed splitting of the second heart sound
- C. a systolic ejection heart murmur
- D. a short, mild left mid-diastolic murmur
Correct Answer: B
Rationale: Fixed splitting of the second heart sound is a hallmark of an atrial septal defect.