Nokea
Of the following, the cyanotic cardiac lesion with decreased pulmonary blood flow is
- A. transposition of the great vessels
- B. single ventricle
- C. truncus arteriosus
- D. tricuspid atresia
Correct Answer: D
Rationale: Tricuspid atresia results in decreased pulmonary blood flow due to lack of right ventricular input.
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In assessing a client with ulcers on the lower extremity, which findings indicate that the ulcers are likely to be of venous, rather than arterial, origin?
- A. Black ulcers and dependent rubor
- B. Irregular ulcer shapes and severe edema
- C. Absent pedal pulses and shiny skin
- D. Hairless lower extremities and cool feet
Correct Answer: B
Rationale: Venous ulcers are typically irregular in shape and associated with severe edema, while arterial ulcers are more likely to present with absent pulses and cool extremities.
Isovolumic contraction phase of ventricular systole occurs during which of the following phases of central venous pressure, approximately
- A. From nadir of y descent to peak of a wave
- B. From peak of a wave to trough of x wave
- C. From trough of x wave to peak of c wave
- D. From peak of c wave to trough of x' descent
Correct Answer: C
Rationale: Isovolumic contraction occurs from the trough of the x wave to the peak of the c wave.
Proteins found in muscle fibres include:
- A. Vimentin
- B. Saccharin
- C. Keratin
- D. Desmin
Correct Answer: D
Rationale: Desmin: Desmin is an intermediate filament protein found in muscle fibers, playing a critical role in maintaining structural integrity and organization within muscle cells.
A child with rheumatic fever begins involuntary, purposeless movements of her limbs. What does the nurse recognize that this indicates?
- A. Seizure activity
- B. Hypoxia
- C. Sydenham’s chorea
- D. Decreasing level of consciousness
Correct Answer: C
Rationale: As the effects of rheumatic fever affect the central nervous system, the child may develop Sydenham’s chorea, manifested by involuntary, purposeless movements of the limbs.
The most common site of osteosarcoma is:
- A. Femur
- B. Humerus
- C. Pelvis
- D. Skull
Correct Answer: A
Rationale: Osteosarcoma most commonly occurs in the long bones, particularly the femur, near the growth plates in children and adolescents.