Which of the following is correct in breast milk jaundice?
- A. Peaks at first week of life
- B. Recurs with resumption of breast milk after trial stoppage
- C. Kernicterus can occur
- D. Seen in up to 10% of infants
Correct Answer: B
Rationale: Breast milk jaundice recurs when breastfeeding is resumed after a temporary stoppage.
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The following drugs cause hypokalaemia:
- A. Commencement of digoxin for atrial fibrillation
- B. ACE (angiotensin converting enzyme) inhibitors
- C. Salbutamol for asthma
- D. Vitamin B1 for the treatment of pernicious anaemia
Correct Answer: C
Rationale: Salbutamol can cause hypokalaemia. Digoxin, ACE inhibitors, and vitamin B1 do not typically cause hypokalaemia.
All are true about genotype - phenotype correlation in Brugada syndrome, except
- A. SCN5A mutation is associated with short PR interval
- B. LTCC mutation is associated with short QT interval
- C. Yield of genetic testing is low (25%)
- D. No major therapeutic implication of genetic testing
Correct Answer: D
Rationale: There are therapeutic implications of genetic testing in Brugada syndrome.
The predominant manifestations of primary pulmonary hypertension include the following EXCEPT
- A. exercise intolerance
- B. precordial chest pain
- C. syncope
- D. low arterial oxygen saturation
Correct Answer: B
Rationale: Precordial chest pain is not a typical manifestation of primary pulmonary hypertension.
Ten hours following thrombolysis for an ST elevation myocardial infarction (STEMI), a client is receiving a lidocaine infusion for isolated runs of ventricular tachycardia (VT). Which finding should the nurse document in the electronic medical record as a therapeutic response to the lidocaine infusion?
- A. Stabilization of blood pressure ranges
- B. Cessation of chest pain
- C. Reduce heart rate
- D. Decreased frequency of episodes of VT
Correct Answer: D
Rationale: Lidocaine is used to suppress ventricular tachycardia, so a decrease in episodes indicates a therapeutic response.
Malabsorption may be seen in:
- A. Ischaemia of the gut
- B. Giardiasis
- C. Lymphoma of the ileum
- D. Chronic lead poisoning
Correct Answer: B
Rationale: Giardiasis, caused by the parasite Giardia lamblia, is a well-known cause of malabsorption.