Signs and Evidence

Making clinical sense of scientific data

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Beware of the limitations of this tool

Atrial septum defect

Calculated pretest probability: 0.02 %
Relevant inclusion criteria: Age > 14 


Clinical signs

1Systolic murmur





Sources used:

1.Iversen K et al. Effect of teaching and type of stethoscope on cardiac auscultatory performance. Am Heart J 2006;152:85.e1285.e7
2.Seldon WA et al. The incidence of atrial septal defect in adults. Br Heart J. 1962 Sep; 24(5): 557–560