Thrill

A palpable, superficial, vibratory sensation overlying a blood vessel or cardiac structure caused by turbulent blood flow, usually associated with a loud murmur or abnormal vascular flow.

Causes

• Cardiac causes

  • Aortic stenosis

  • Mitral regurgitation

  • Ventricular septal defect

  • Atrial septal defect

  • Other congenital septal defects

  • Patent ductus arteriosus

  • Hypertrophic cardiomyopathy

  • Prosthetic valve dysfunction

• Vascular causes

  • Arterial aneurysm

  • Vascular stenosis

  • Arteriovenous fistula