Optimised Cardiovascular and Renal Protection in Patients With Chronic Kidney Disease and Cardiovascular Disease

The goal of this clinical trial is to investigate whether care in a specialised Cardio-Renal Clinic can improve the health of people living with both cardiovascular disease and chronic kidney disease. The clinic brings together expertise in heart and kidney disease and provides structured treatment based on current clinical guidelines. The main research questions are: * After one year, does care in the Cardio-Renal Clinic improve measures of heart and kidney function, quality of life, symptoms, and physical ability compared with usual care? * After five years, does care in the Cardio-Renal Clinic reduce the risk of death, hospitalisation for heart failure, heart attack, stroke, worsening kidney function, or kidney failure compared with usual care? At the beginning of the study, all participants will undergo a detailed assessment of their heart and kidney health. This will include blood and urine tests, an ultrasound examination of the heart, questionnaires, and tests of physical ability. Participants will then be randomly assigned to either optimised care in the Cardio-Renal Clinic or usual care. Participants assigned to the Cardio-Renal Clinic will have their treatment reviewed and adjusted by a multidisciplinary team. The clinic may recommend or prescribe approved medications that are already used in routine care for heart and kidney disease. No experimental medications will be used. Participants assigned to usual care will continue to receive care from their general practitioner and any hospital departments involved in their treatment.