Nokea
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.
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In normal neonates:
- A. Extracellular fluid volume exceeds intracellular fluid volume
- B. In a term baby, plasma calcium levels exceed that of the mother
- C. Clamping the umbilical cord after cessation of cord pulsations increases the blood volume by 20% in the baby
- D. There are two arteries and one vein in the umbilical cord
Correct Answer: A
Rationale: In neonates, extracellular fluid volume is greater than intracellular fluid volume, reflecting the transition from intrauterine to extrauterine life.
Which of the following is a vasodilator?
- A. Thromboxane A2
- B. Endothelin
- C. Prostaglandin E2
- D. Urotensin II
Correct Answer: C
Rationale: Prostaglandin E2 is a vasodilator.
A 10-year-old has undergone a cardiac catheterization. At the end of the procedure, the nurse should first assess:
- A. Pain
- B. Pulses
- C. Hemoglobin and hematocrit levels
- D. Catheterization report
Correct Answer: B
Rationale: Checking pulsesâ€â€especially in the canulated extremityâ€â€assures perfusion to that extremity and is the priority postprocedure.
Displacement of apex to anterior axillary line
- A. TOF
- B. Truncus arteriosus
- C. Hypoplastic left heart syndrome
- D. TAPVD
Correct Answer: B
Rationale: Truncus arteriosus typically shows displacement of the apex to the anterior axillary line.
Which should the nurse consider when preparing a school-age child and the family for heart surgery?
- A. Unfamiliar equipment should not be shown.
- B. Let the child hear the sounds of an ECG monitor.
- C. Avoid mentioning postoperative discomfort and interventions.
- D. Explain that an endotracheal tube will not be needed if the surgery goes well.
Correct Answer: B
Rationale: The child and family should be exposed to the sights and sounds of the intensive care unit (ICU). All positive, nonfrightening aspects of the environment are emphasized. The child should be shown unfamiliar equipment and its use demonstrated on a doll. Carefully prepare the child for the postoperative experience, including intravenous (IV) lines, incision, and endotracheal tube.