Today we’re going to discuss a syndrome that you’ve probably been hearing a lot about because it is getting a lot of attention, and that is cardiovascular-kidney-metabolic (CKM) syndrome. It can be a bit challenging to wrap your head around when you first hear about it, so I am going to try to clear that up. This is going to be a brief review of the AHA/ACC/ADA/ASN Guideline for the Prevention, Detection, Evaluation, and Management of Cardiovascular-Kidney-Metabolic Syndrome. When all of these organizations get together and issue a joint statement, it’s something worth paying attention to.
The term, CKM syndrome, has evolved to describe the close interconnection between cardiovascular disease, kidney disease, and metabolic abnormalities in order to promote a more comprehensive holistic approach to both prevention and treatment of these entities. Today we’re going to first define CKM syndrome, then discuss why it’s important to understand the stages of the syndrome. We’re just going to touch on treatment, but I want us all to be aware of the overlap in treatment between different parts of CKM syndrome.
Let’s start with the definition. CKM syndrome — and I’m going to quote from the guideline here — is “a systemic disorder characterized by pathophysiological interactions among metabolic risk factors, CKD, and the cardiovascular system, leading to multiorgan dysfunction and a high rate of adverse cardiovascular outcomes.” This definition is meant to emphasize the interconnectedness of metabolic risk factors and their outcomes.
The root cause of CKM syndrome is excess adiposity, particularly visceral adiposity. Visceral adiposity leads to inflammation and insulin resistance, which in turn leads to the development of metabolic abnormalities and progression of CKM syndrome, which in turn leads to multi-organ pathology. When assessing adiposity, both BMI and waist circumference provide complementary prognostic information about the likelihood of progression of CKM syndrome.
CKM syndrome goes through predictable stages:
- Stage 1: Excess or dysfunctional adiposity and/or prediabetes.
- Stage 2: The presence of metabolic risk factors, including diabetes and early-to-moderate CKD.
- Stage 3: Subclinical cardiovascular disease, which includes subclinical coronary disease (defined as a coronary calcium score [CAC] > 100) and/or subclinical heart failure (defined as a NT-proBNP ≥ 125 pg/mL with echocardiographic evidence of ventricular dysfunction); very high-risk chronic kidney disease (CKD stage 4 or 5 or by virtue of elevated urine albumin-creatinine ratio by the KDIGO heat map); or high CVD risk with a 10-year predicted risk of > 20% using the PREVENT equation.
- Stage 4: Clinical cardiovascular disease, which can either be coronary artery disease, heart failure, stroke, atrial fibrillation, or peripheral vascular disease.
One of the basic tenets of the guideline is to correctly categorize and identify people in order to institute therapies that slow progression to the next stage of CKM and/or slow progression of organ dysfunction in those who already have end-organ damage.
To prevent CKM early on, it is all about a healthy diet and adequate physical activity, beginning at a young age — but I suggest it’s never too late. In Stage 1 CKM syndrome, address excess adiposity and periodically check lipids, kidney function, and glucose to identify metabolic abnormalities early on. In Stage 2, treat metabolic risk factors: hypertension, lipids, and glucose. An important element that has been added in this guideline is the recommendation to check a uACR annually to identify early development of CKD. For Stage 3, further risk characterization of subclinical disease can be helpful, particularly when the use of medication is not entirely clear, either by risk prediction or patient preference.
For example, if a patient with a 5%-10% 10-year risk of atherosclerotic cardiovascular disease (ASCVD) on the PREVENT equation is uncertain about the use of a statin, utilizing additional risk assessment, such as CAC scores, can be helpful. If someone’s heart failure risk is high, consider evaluating for pre-heart failure — a term that not everyone is familiar with, but is worth learning about — using NT-proBNP in order to determine if interventions may be appropriate to prevent progression to clinical heart failure. The identification of subclinical ASCVD or heart failure is important as it helps to determine both the correct medications to use and the intensity of intervention. If someone has a high CAC score, for instance, it argues for a lower LDL goal, which may decrease the likelihood of progression from preclinical to clinical heart disease. Early identification of pre-heart failure with appropriate treatment decreases the risk of developing clinical heart failure by almost half.
Treatment for CKM varies depending upon the stage and the specific metabolic abnormality or end-organ damage. Some medications address just one particular area, like treatment of hypertension or lipids, for instance. Some medicines, such as GLP-1 receptor agonists and the SGL2 inhibitors, address multiple areas.
Understanding CKM syndrome allows us to see the interconnectedness between much of the chronic disease that we care for every day. Metabolic abnormalities like hypertension, hyperlipidemia, and diabetes don’t exist in isolation, and end-organ damage including ASCVD, heart failure, metabolic dysfunction-associated steatotic liver disease (MASLD), and CKD have overlapping root causes and treatments.
Neil Skolnik, MD
Professor of Family and Community Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia; Associate Director, Department of Family Medicine Residency Program, Jefferson Health-Abington, Jenkintown, Pennsylvania
Disclosure: Neil Skolnik, MD, has disclosed the following relevant financial relationships:
Serve(d) as a director, officer, partner, employee, advisor, consultant, or trustee for: AstraZeneca; Teva Pharmaceuticals; Eli Lilly and Company; Sanofi; Sanofi Pasteur; GlaxoSmithKline; Abbott; Novo Nordisk; Boehringer Ingelheim
Serve(d) as a speaker or a member of a speakers bureau for: AstraZeneca; Eli Lilly and Company; GlaxoSmithKline; Teva Pharmaceuticals; Heartland Pharma; Takeda; Astellas Pharma; Novo Nordisk
Received research grant from: AstraZeneca; GlaxoSmithKline; Novo Nordisk; Novartis
https://www.medscape.com/viewarticle/ckm-syndrome-staging-screening-and-treatment-2026a1000oc0

