Nokea
The formula to predict the maximum predicted heart rate for Treadmill exercise testing in CAD patients on beta blockers is X - (0.7 X Age). The value of X is
- A. 174
- B. 164
- C. 184
- D. 154
Correct Answer: B
Rationale: The value of X is 164 in the formula for predicting maximum heart rate in CAD patients on beta blockers.
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Respiratory pathogens in the immunosuppressed include:
- A. Staphylococcus aureus
- B. Legionella
- C. Pneumocystis carinii
- D. Chlamydia
Correct Answer: C
Rationale: Pneumocystis carinii: Pneumocystis carinii pneumonia is a life-threatening infection in immunocompromised patients, especially those with HIV/AIDS or undergoing immunosuppressive therapy.
In infantile eczema:
- A. The rash is characteristically present at birth
- B. The papules are itchy
- C. Cold weather relieves the symptoms
- D. A family history of related disorders is elicited in 70% of cases
Correct Answer: B
Rationale: Infantile eczema is itchy and often associated with a family history of atopy. The rash is not present at birth, and cold weather can exacerbate symptoms.
The most common cardiac anomaly associated with Coarctation of aorta is
- A. Bicuspid aortic valve
- B. Subaortic ventricular septal defect
- C. Atrial septal defect
- D. Supramitral ring
Correct Answer: A
Rationale: Bicuspid aortic valve is the most common cardiac anomaly associated with coarctation of the aorta.
The following investigations are not needed in a 3-year old on TPN for the past 3 weeks:
- A. Serum selenium
- B. Serum manganese
- C. Serum iron
- D. Serum calcium
Correct Answer: C
Rationale: The correct answer is C because serum iron is not typically monitored in children on total parenteral nutrition (TPN). The other options (a, b, d, e) are commonly monitored to prevent deficiencies or toxicities.
A 1-day-old is noted to be cyanotic. Physical examination reveals a grade 2-3/6 systolic murmur and a single loud second heart sound. The chest radiograph reveals a normal-sized heart and decreased pulmonary vascular markings. The electrocardiogram (ECG) reveals left ventricular dominance. The next step in the management of this neonate is to administer
- A. sodium bicarbonate
- B. morphine
- C. prostaglandin E1
- D. digoxin
Correct Answer: C
Rationale: Prostaglandin E1 helps maintain ductal patency, which can improve circulation in conditions like transposition of the great arteries or other congenital heart defects causing cyanosis.