Causes of Pulmonary Thrills

Pulmonary Systolic thrill

• Pulmonary stenosis
• Atrial septal defect 
• Ventricular septal defect
•  Patent ductus arteriosus
•  Fallot’s tetralogy

Continuous thrill

•   Patent ductus arteriosus
•   Rupture of sinus of Valsalva.