Atrioventricular nodal rhythm is a medical term used to describe a type of abnormal heart rhythm. There are several synonyms that can be used to refer to this condition. One commonly used term is AV nodal rhythm. Other synonyms include junctional rhythm, nodal rhythm, and slow junctional rhythm. Each term refers to the same condition but may be used by different medical professionals depending on their specialization. It is important to note that while these terms are often used interchangeably, a thorough medical evaluation is necessary to determine the cause of any abnormal heart rhythm and appropriate treatment.