Nokea
Duchenne muscular dystrophy (DMD):
- A. Affects dystrophin gene
- B. Features usually present before five years of age
- C. Frontal baldness occurs
- D. Is part of the differential diagnosis in a floppy infant
Correct Answer: B
Rationale: Features usually present before five years of age
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Decreased DLCO is seen with:
- A. Increased CO in circulation
- B. Anaemia
- C. Pulmonary fibrosis
- D. Exercise
Correct Answer: C
Rationale: Pulmonary fibrosis: Decreased diffusing capacity for carbon monoxide (DLCO) is a hallmark of pulmonary fibrosis, where lung tissue becomes scarred, reducing its ability to transfer gases.
While assessing a newborn with respiratory distress, the nurse auscultates a machine-like heart murmur. Other findings are a wide pulse pressure, periods of apnea, increased PaCO2, and decreased PO2. The nurse suspects that the newborn has:
- A. Pulmonary hypertension
- B. Patent ductus arteriosus (PDA)
- C. Ventricular septal defect (VSD)
- D. Bronchopulmonary dysplasia
Correct Answer: B
Rationale: A machine-like murmur is the hallmark of a PDA.
In Wolff-Parkinson-White syndrome:
- A. The abnormal pathway is between the atrial and ventricular myocardium
- B. Wide QRS complexes occur more frequently than narrow QRS
- C. Narrow QRS complexes are regular
- D. Verapamil is the treatment of choice for atrial fibrillation
Correct Answer: B
Rationale: In Wolff-Parkinson-White syndrome, a wide QRS complex is often seen due to the presence of an accessory pathway that bypasses the normal conduction system.
Which painful, tender, pea-sized nodules may appear on the pads of the fingers or toes in bacterial endocarditis?
- A. Osler nodes
- B. Janeway lesions
- C. Subcutaneous nodules
- D. Aschoff nodes
Correct Answer: A
Rationale: Osler nodes are red, painful, intradermal nodes found on pads of the phalanges in bacterial endocarditis. Janeway lesions are painless hemorrhagic areas on palms and soles in bacterial endocarditis. Subcutaneous odules are nontender swellings, located over bony prominences, commonly found in rheumatic fever. Aschoff nodules are small nodules composed of cells and leukocytes found in the interstitial tissues of the heart in rheumatic myocarditis
Symptoms in patients with aortic stenosis depend on the severity of the obstruction EXCEPT
- A. cardiomegaly
- B. pulmonary congestion
- C. weak pulses
- D. pale skin
Correct Answer: D
Rationale: Pale skin is not a typical symptom of aortic stenosis.