The authors of this Viewpoint argue that the currently used definitions of cardiorenal syndrome fail to take into account the complex bidirectional nature of the relationship between the heart and kidneys. They propose a new classification of the condition, comprising five subtypes that are distinguished on the basis of the primary and secondary pathology and its chronology. Examples of each subtype are provided.
- Claudio Ronco
- Andrew A House
- Mikko Haapio
