Heller, J <br/><br/>
"Crochetage" (notch) on R wave in inferior limb leads: a new independent electrocardiographic sign of atrial septal defect.  [electronic resource] 

 -  Journal of the American College of Cardiology  Mar 1996 
 - 877-82 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>0735-1097 
<br/><br/><label>Standard No.: </label>10.1016/0735-1097(95)00554-4  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adolescent<br/>Adult<br/>Aged<br/>Aged, 80 and over<br/>Bundle-Branch Block--diagnosis<br/>Child<br/>Child, Preschool<br/>Cohort Studies<br/>Electrocardiography<br/>Electrodes<br/>Extremities<br/>Female<br/>Heart Septal Defects, Atrial--diagnosis<br/>Humans<br/>Male<br/>Middle Aged<br/>Predictive Value of Tests<br/>Regression Analysis<br/>Retrospective Studies<br/>Sensitivity and Specificity