<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>An electrocardiographic finding in which the pacer of the heart is located in the AV junction, normally presenting with a narrow QRS complex and a rate of 60-100 beats per minute. (NCI)</n0:def-definition><n0:def-source>CDISC</n0:def-source></n0:ComplexDefinition>
<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>An electrocardiographic finding in which the pacer of the heart is located in the AV junction, presenting with a narrow QRS complex and a rate of 40-60 beats per minute.</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>