Nokea
Dome and dart P wave in lead V1 in electrocardiogram is suggestive of which of the following?
- A. Dextrocardia
- B. Left atrial ectopic rhythm
- C. Biatrial enlargement
- D. Mitral stenosis
Correct Answer: C
Rationale: The dome and dart P wave morphology is characteristic of biatrial enlargement, often seen in conditions like mitral stenosis and atrial fibrillation.
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Abnormal coloration of the urine (in the absence of haematuria) may be due to:
- A. Consumption of beetroot
- B. Treatment with co-danthramer
- C. Phenylketonuria
- D. Acute intermittent porphyria
Correct Answer: A
Rationale: Beetroot can cause red urine. Co-danthramer, phenylketonuria, and porphyria can also cause abnormal urine color, but beetroot is a common cause.
An older male client with long-standing lung disease is admitted to the medical unit for treatment of pulmonary infection. In assessing for signs of increasing hypoxia, which action should the nurse include? (select all that apply)
- A. Monitor dryness of mucous membranes
- B. Check for changes in mentation
- C. Observe color of skin and nailbeds
- D. Note appearance of jugular veins
Correct Answer: B
Rationale: Changes in mentation, skin color, and breathing patterns are key indicators of hypoxia in clients with lung disease.
Sudden death in an athlete immediately after forceful blunt trauma to the chest is most likely
- A. commotio cordis
- B. myocardial infarction
- C. lacerated coronary artery
- D. ruptured cardiac tendineae
Correct Answer: A
Rationale: Commotio cordis occurs due to sudden arrhythmias triggered by chest trauma during a vulnerable phase of the cardiac cycle.
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.
Medical treatment of myasthenia gravis includes:
- A. Thymectomy
- B. Physostigmine
- C. Edrophonium
- D. Anticholinergic agents
Correct Answer: C
Rationale: Edrophonium: Edrophonium is used in the diagnosis and short-term treatment of myasthenia gravis as it improves neuromuscular transmission by inhibiting acetylcholinesterase.