Cardiorenal syndrome refers to the interdependent dysfunction of the heart and kidneys, where acute or chronic dysfunction in one organ induces dysfunction in the other. The pathophysiology is complex, involving the renin-angiotensin-aldosterone system (RAAS), nitric oxide-reactive oxygen species (NO-ROS) imbalance, inflammation, and sympathetic activation.1 Five types of cardiorenal syndrome are recognized, each defined by the primary organ dysfunction, with a novel sixth type, chronic secondary cardiorenal syndrome, also proposed. Patient history, clinical examination, and management aid in understanding the condition, while specific biomarkers for the heart and kidneys play a crucial role in diagnosis. Ultrasound is preferred for imaging, although MRI and nuclear imaging are also utilized. Key management strategies include decongestive therapies, ionotropic therapy, and RAAS inhibition, with specific treatment algorithms suggested by the cardio-renal dysfunction study group.2 "1. https://pmc.ncbi.nlm.nih.gov/articles/PMC9179008/ 2. https://www.ahajournals.org/doi/10.1161/CIR.0000000000001063 "