Patent Ductus Arteriosus - Self Assessment Questions

Please check one answer only

1) Which virus is associated with a persistent arterial duct ?
a) Rubella
b) Measles
c) Varicella
d) Cytomegalovirus
e) Herpes simplex Type II

2) The murmur is continuous because ...
a) Blood flows through the ductus in different directions in systole & diastole
b) There is a large shunt and so the murmur is prolonged
c) The smooth muscle of the ductus propels blood through the ductus
d) The systemic resistance to flow is higher than the pulmonary resistance
e) The ductus is near the anterior chest wall & so flow is heard more easily

3) Which of the following is NOT a recognised treatment for a 1 yr old infant with a PDA ?
a) Transcatheter Amplatzer occlusion
b) Transcatheter coil occlusion
c) Thoroscopic clip occlusion
d) Double ligation with silk suture
e) Indomethacin

4) The first PDA was ligated by Dr Gross in Boston in the ...
a) 1930s
b) 1940s
c) 1950s
d) 1960s
e) 1970s

5) Recognised complications of surgical ligation do NOT include ?
a) Pneumothorax
b) Chylothorax
c) Haemothorax
d) Recurrent laryngeal palsy
e) Bronchiectasis

6) Medical treatment to close a premature infant's PDA is contraindicated if ?
a) Serum creatinine is 50 micromols/l or more
b) Intracranial haemorrhage
c) High frequency oscillatory ventilation
d) Thrombocytosis
e) 3mm or larger ductus
 
7) Which condition is least likely to be associated with a PDA?
a) Tetralogy of Fallot
b) Ventricular Septal Defect
c) Atrial Septal Defect
d) Transposition of the Great Arteries
e) Coarctation of the aorta

8) Which condition is NOT approached through a lateral thoracotomy ?
a) VSD closure
b) Coarctation of the aorta
c) Pulmonary artery band
d) Patent Ductus Arteriosus
e) Classical Blalock Taussig Shunt

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