Introduction

The prevalence of patients with chronic metabolic and with cardiovascular multi-comorbidities has been increasing steadily over the course of the last decades. Cardiovascular disease (CVD) is the main cause of morbidity and mortality among patients with type 2 diabetes mellitus (T2DM) [1]. Affecting 85.6 million Americans, 219 billion dollars are spent on CVD each year [2]. Often, both diseases coexist together, with as many as two-thirds of patients with CVD being dysglycemic [3]. However, metabolic disorders of patients with CVD frequently remain undiagnosed and are untreated, resulting in a higher incidence of cardiovascular death [4]. Cardiometabolic disease already places substantial strain on the health care system. Individuals with diabetes have 2.3 higher medical costs when adjusted for age and gender [1]. In light of increasing obesity prevalence, the aging population, and rising medical expenditures, this will only expand in the future.

However, in our present health care system, the optimal management of these complex cardiometabolic patients is compromised. In our traditional siloed care model, there is no “main” specialist coordinating treatment, as cardiologists and endocrinologists often work with little overlap. Other important aspects of cardiometabolic therapy such as lifestyle intervention and psychological counseling are not adequately addressed. As a result, cardiometabolic patients receive fragmented care with redundant diagnostic testing and higher costs and are at risk of drug-drug interaction and, most importantly, adverse CVD events.

Fortunately, we have witnessed advancements on the front of cardiometabolic pharmacology. Novel, evidence-based “cardiometabolic drugs” initially approved for the treatment of T2DM have proven to treat not only diabetes but also CVD. These cardiometabolic drugs further blur the lines between traditional specialties, emphasizing the need to rethink current siloed care models.

As a solution to this urgent issue, we propose the development of a distinct cardiometabolic specialty addressing the needs of the cardiometabolic patient. The education of cardiometabolic physicians would start early, with core concepts of cardiometabolic disease introduced in medical school. After a general internal residency program, physicians could specialize in cardiometabolic medicine by completing a 2–3-year cardiometabolic specialist training program. Finally, the cardiometabolic physician would have the opportunity to work in an outpatient clinic dedicated to the cardiometabolic patient (Fig. 1). In this publication, we formulate a prototype for a cardiometabolic clinic distinctly addressing the needs of the cardiometabolic patient. This clinic would consist of a well-coordinated team of specialists of a cardiometabolic physician, cardiometabolic nurses, dieticians, rehabilitation physicians, certified diabetes care and education specialist (CDCES), and psychologists. Through a collaborative, interdisciplinary approach to this care model, we would hope to optimize treatment of the cardiometabolic patient, improve outcomes, and reduce medical expenditure.

Fig. 1
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The cardiometabolic clinic

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Recent Trends in Epidemiology of Cardiometabolic Disease

Recent trends in CVD-related mortality are concerning. While the USA has witnessed a considerable decrease of death from CVD in the past decades, this trend seems to be dissipating. However, age-adjusted CVD mortality has remained at 0.5%/year, while other areas have witnessed a continuous decrease in mortality (e.g., cancer decreased 1.5% annual between 2000 and 2015) [5, 6]. Indeed, CVD accounts for 17.3 million deaths a year globally, but according to a 2014 study, is expected to cause over 23.6 million deaths per year by 2030 [7]. Reduced improvement of CVD mortality is most likely to be attributed to the alarming increase in obesity prevalence. In the USA, 39.4% of adults ≥ 20 years of age are obese [8]. By 2030, estimates suggest that one in two Americans will suffer from obesity [9]. Obese individuals, particularly those with metabolic syndrome, are at higher risk of diabetes and adverse CVD outcomes [10]. Obesity is a main driver of diabetes. Among US adults, 10.5% are diagnosed with diabetes while another 37.6% are pre-diabetic [11]. Data from National Health and Nutrition Examination Survey (NHANES) suggest that in the last three decades, blood glucose health has deteriorated in obese individuals, leading to a worsening of CVD [12]. Individuals with diabetes are associated with a two times higher risk of coronary heart disease (CHD) and 2.3 times higher for ischemic stroke [13]. Estimates suggest that 10% of vascular deaths are attributed to diabetes and two-thirds of patients with T2DM die from CVD [13, 14]. Indeed, diabetes is often unrecognized in patients with CVD. In a study of left ventricular dysfunction, 11% of patients with HF had undiagnosed T2DM [15]. Finally, apart from cardiovascular comorbidities, CKD is one of the most relevant co-diagnosis of diabetes. In the developed world, diabetes is the primary cause of CKD and patients with diabetes and CKD have a markedly elevated risk of CVD [16, 17]. Albuminuria is associated with an atherogenic lipoprotein profile of elevated TGs, low HDL-C, and a shift in LDL-C, with a higher proportion of small, high-density lipoproteins [18, 19]. However, current guidelines are inconstant in assessment of cardiovascular risk of patients with CKD, prohibiting adequate preventive CVD treatment.

Advances in Cardiometabolic Drugs and Their Limited Use in Clinical Care

Fortunately, we have witnessed a paradigm shift in the development of pharmaceutical drugs targeting T2DM as well as CVD. Cardiovascular outcome trials (CVOTs) demonstrated the cardiovascular benefits of SGLT-2 inhibitors and GLP1-RAs for patients with T2DM (and in some cases without T2DM). The Food and Drug Administration (FDA) has now approved the use of antidiabetic agents to lower risk of a composite of major adverse cardiac events (liraglutide [20], canagliflozin [21••], semaglutide [22], dulaglutide [23•]), cardiovascular death (empagliflozin [24]), and HF (dapagliflozin [25]). This recommendation is echoed in recent professional guidelines. SGLT-2 inhibitors were shown to be particularly beneficial for patients with HF and chronic kidney disease (CKD) and should be subscribed to patients with T2DM and CKD or HF [21, 26]. If obesity is a central concern, GLP-1 RAs are recommended, as they are currently the most potent anti-diabetic drug for weight loss [27].

However, despite guideline recommendation and FDA approval, these evidence-based therapies are underused. A cohort study investigating contemporary use of guideline recommended medication among patients with atherosclerotic cardiovascular disease (ASCVD) and diabetes found that only 9.0% of individuals received SGLT-2 inhibitors and 7.9% were subscribed GLP-1 RAs [28]. Indeed, investigators observed optimal pharmaceutical therapy in only 6.9% of cases [28]. These agents are a vital opportunity to improve care and reduce cardiovascular events in these patients. We believe that training physicians to appropriately treat cardiometabolic patients would lower barriers of subscription of these agents.

Current Siloed Care Models

While the pharmaceutical sector has developed “cardiometabolic” agents, physician education and clinical care is still divided into isolated cardiology and endocrinology programs, with little overlap between disciples. Some argue that primary care physicians should be adept in managing care for patients with ASCVD and diabetes. In reality, primary care providers battle time constraints and face competing demands during routine primary care visits with little bandwidth to comprehensively treat the cardiometabolic patient [29•]. We are also facing a severe shortage of primary care physicians. Only one-quarter of medical students plan on pursing primary care [30]. While it may seem intuitive for cardiologists to lead the management of cardiometabolic patients, traditional cardiology training does not prepare physicians for glycemic management, prescribing weight loss drugs or adequate lifestyle counseling. Cardiologists may feel uncomfortable monitoring side effects of novel cardiometabolic drugs like SGLT-2 inhibitors and GLP1-RAs, in addition to the complex management of ASCVD drugs like PCSK9 inhibitors, beta blockers, renin-angiotensin-aldosterone system inhibitors, or anticoagulant regimes. As a result of this fractionated care, fewer than 20% of patients with diabetes reach all three guideline recommended targets for HbA1c, blood pressure, and low-density lipoprotein-cholesterol [31]. Ultimately, this issue calls for professional experts and related health care team in cardiometabolic disease to provide comprehensive, guideline-recommended treatment of these complex patients.

Education in Cardiometabolic Medicine

Medical School

The foundations of cardiometabolic medicine should be laid in medical school, and students who are interested can choose further training as a cardiometabolic specialist during residency. Current medical education teaches disease as single entities, rather than emphasizing that chronic conditions often occur simultaneously and multimorbid patients are the norm. Teaching ASCVD and T1DM/T2DM in one holistic cardiometabolic course instead of in separate system blocks would allow students to better grasp the interdisciplinary nature of disease entities and prepare students for multimorbid patients. Education in cardiometabolic medicine in medical school would incorporate lessons on lifestyle counseling and behavioral medicine: an area underdeveloped in current curricula.

The Cardiometabolic Specialist

Following medical school and 2–3 years of general internal medicine house-staff training, we envision a cardiometabolic training program consisting of a composite of cardiology, endocrinology, and other specialties relevant to the cardiometabolic patient.

Primary and secondary ASCVD prevention would be the focus of the cardiology component of this program. Training in electrophysiology, interventional cardiology, advanced HF, or cardiac transplantation would however not be part of this curriculum. Rotations in hypertension clinics and vascular medicine would allow for training for treatment of severe hypertension. Physicians would be able to correctly diagnose resistant hypertension by excluding pseudoresistance and screening for secondary hypertension, as well as assessing organ damage. Compared to traditional endocrinology specialist training, more emphasis would be placed on lessons on the complex pharmacological treatment of resistant hypertension and life-style intervention. In addition, some experience in hepatology would further broaden the experience of cardiometabolic medicine that relates non-alcohol fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH) to ASCVD [32]. The endocrinology aspects of this specialization program would focus on obesity, metabolic syndrome, T1DM and T2DM, lipid and lipoprotein disorders, endocrine causes of hypertension, and lifestyle. Physicians would be trained in advanced glucose management by covering the administration of basal/bolus insulin, insulin infusion pumps, and glucose sensors. Other traditional topics regarding diseases of thyroid, hypothalamic-pituitary-adrenal axis, reproductive endocrinology, or metabolic bone disease, including parathyroid disorders would not be covered during the cardiometabolic training program.

In addition to endocrinology and cardiology training, the curriculum would allow enough time for training in lifestyle counseling. Physicians would be adept in smoking cessation therapy, exercise physiology, and nutrition counseling. Behavioral intervention training would provide trainees with skills to enhance therapy adherence, physician-patient communication, and motivational interviewing. A substantial component of training would be spent on the most relevant topics of obesity medicine, focusing particularly on NAFLD and NASH. Rotations through obesity clinics would provide physicians with training in obesity pharmacology, as well as when and how to refer patients to bariatric surgery and postoperative management.

The Cardiometabolic Clinic

The Cardiometabolic Team

Finally, we envision the establishment of a cardiometabolic outpatient clinic with a multidisciplinary team consisting of a cardiometabolic physician, behavioral psychologists, nutritionists, certified diabetes care and education specialists (CDCES), and specialized rehabilitation physicians. These professionals as well as three cardiometabolic nurses would form a cohesive, interdisciplinary team. The cardiometabolic clinic would be managed by two administrative personnel. In a well-groomed high-volume clinic, this is the minimum number of staff required but can be expanded as needed. As the clinic would provide clinical training, students and residents would be a welcomed part of the team.

Practicalities

The cardiometabolic nurse would triage new patients and provide an initial assessment to decide which type of professional the patient requires. Triaging would incorporate cardiovascular risk assessment when indicated through cardiac imaging, as well as initial bloodwork. After consultation with the cardiometabolic physician, a personalized treatment plan for the patient would be created. Through this type of holistic assessment of patients, high-risk individuals can be quickly identified. We envision the cardiometabolic clinic as a continuous care model, where patients return for regular check-ups and counseling sessions after initial referral.

The success of treating complex cardiometabolic patients relies on the successful collaboration between team members of the cardiometabolic clinic. Other medical specialties report a multidisciplinary approach as the most efficient strategy to handling complex patients [33]. This approach would be fostered by daily team meetings discussing therapeutic plans and new research evidence regarding cardiometabolic disease. Results from a meta-analysis suggest that poor coordination of and information transfer within a medical team reduced patient satisfaction in outpatient clinical settings [34]. In a survey of chronically ill US adults, 30% reported missing medical records or duplication of tests during outpatient treatment [35]. A well-coordinated cardiometabolic outpatient clinic would reduce such errors, improving outcome and patient satisfaction.

Subspecialties Working at the Clinic

Cardiometabolic Specialist

The cardiometabolic physician’s work would primarily consist of a composite of endocrinology and cardiology, with a focus on primary and secondary prevention of CVD.

At the beginning of treatment, cardiovascular imaging (echocardiography, stress testing, and coronary computed tomography) to assess ASCVD would be individualized and at times used to make nuanced decisions about cardiovascular risk. The cardiometabolic clinic would also offer transthoracic echocardiography to quickly and easily assess patients with suspect structural heart disease. Transesophageal echocardiography, magnetic resonance imaging, and nuclear imaging are beyond the scope of the cardiometabolic physician. Additionally, the cardiometabolic physician would manage lipids and have experience in treating complex patients with severe hypertriglyceridemia, statin intolerance or genetic lipid and lipoprotein disorders such as familial hypercholesterolemia. Patients would also be treated for hypertension including resistant. The ramification of causes of resistant hypertension demands a systematic and multidisciplinary approach in diagnosis and treatment [36]. This would be facilitated by the well-coordinated integrative team of the cardiometabolic clinic. A routine part of the cardiometabolic physician’s work would be assessment of CKD and the associated cardiovascular risk through albuminuria measurement. The cardiometabolic physician possessing endocrinology and cardiology expertise could competently manage CKD as well as any cardiovascular comorbidities according to most recent evidence. Physicians would be adept in glycemic management of patients, from coordinating prescriptions of metformin, GLP-1 RAs, SGLT-2 inhibitors, thiazolidinediones, and other drug classes for the treatment of diabetes to complex insulin administration schemes and new diabetes technologies. The cardiometabolic specialist would also be in charge of obesity management by prescribing and individualized approach to lifestyle management, weight loss medications, and when and how to refer patients to metabolic surgeons and be knowledgeable in managing post-bariatric surgery patients.

The Cardiometabolic Nurse

We envision the cardiometabolic nurse to work side by side with the cardiometabolic physician. Evidence suggests that diabetes and CVD care quality was comparable between physicians and advanced care providers (nurse practitioners or physician assistants) delivered in a primary care setting [37]. The cardiometabolic nurse would conduct an initial comprehensive health assessment, including cardiac and metabolic history, screening for risk factors, taking blood tests, and referring patients to cardiac imaging tests. After discussion with the cardiometabolic specialist, the cardiometabolic nurse would contact patients to discuss lab and imaging results and help direct patients to follow-up appointments and when necessary to other subspecialists. With respect to the continuity of care model, nurses would contact patients regularly to inquire about treatment progress and remind patients of appointments. As the cardiometabolic clinic would grow, clerks would take over scheduling routine appointments while cardiometabolic nurses would ensure continuity of care by discussing lifestyle goals and progress with patients and decide if follow-up appointments or referrals are necessary. Preventive care in the form of intensive lifestyle intervention should form an essential part of the new model of care underpinning the cardiometabolic clinic. In lifestyle counseling sessions, nurses will discuss exercise and diet as well as smoking cessation plans with patients. For some patients, these lifestyle counseling sessions will suffice. If more intensive lifestyle interventions are needed, the cardiometabolic nurse can refer patients to the behavioral psychologist, nutritionist, or exercise physiologist. An excellent lifestyle counseling program is vital for the successful treatment of cardiometabolic disease and will distinguish this clinic from other programs. An estimated 40% of deaths in USA are attributed to poor lifestyle choices, but physicians only provide lifestyle counseling in 34% of cases [38, 39]. The importance of physicians to effective lifestyle assessment of patients with cardiovascular disease has been previously emphasized [40].

Behavioral Psychologist

Some patients may require regular sessions with a behavioral psychologist. CVD outcomes are highly linked to psychological factors. For example, depression is a known risk factor for CHD and HF and a relevant comorbidity of diabetes [41, 42]. Behavioral change therapy would also address nonadherence to prescribed medication. Only half of patients without CHD and one-third with CHD adhere to their drugs prescribed [43]. Using techniques such as cognitive behavioral therapy techniques and motivational interviewing, behavioral change psychologists would facilitate lasting transformation in patient’s exercise and eating habits and expedite smoking cessation. Evidence suggests that structured behavioral support by a psychological specialist is more effective for smoking cessation therapy than counseling by nurse practitioners or pharmacist [44]. Smoking cessation medication acts synergistically with behavioral consultation and should be subscribed to patients [45].

Nutritionists

Nutritionists are an important part of lifestyle management and need to be available to counsel patients regarding dietary interventions to optimize cardiometabolic health. There is a growing consensus that a cardioprotective diet consists of a diverse inclusion of healthful, nutrient-dense foods and is one of the most effective methods to prevent and treat CVD, obesity, and diabetes [46]. Dietary patterns such as the DASH (dietary approach to stop hypertension) diet and Mediterranean style diets can reduce ASCVD risk, improve blood lipids and blood pressure, and reduce inflammation [47, 48]. Evidence suggests that response to diet needs to be personalized, rather than focusing on a specific macro- and micro-nutrient distribution for each patient with diabetes. Thus, dietary counseling should take comorbidities, current eating patterns, preferences, and sociocultural factors into consideration. Patients with diabetes in particular profit from sessions with nutritionists, as choosing the right foods is often the most challenging part of treatment. Diabetes-specific medical nutrition therapy (MNT) is highly effective and awarded A-level recommendation by the ADA Standards of Medical Care 2020 [49]. Conveyed by a registered dietician, MNT is associated with a HbA1C decrease up from 0.3 to 2% in individuals with T2DM and 1.0–1.9% in patients with T1DM [50].

Certified Diabetes Care and Education Specialist

Certified Diabetes Care and Education Specialist (CDCES) will form an integral part of the cardiometabolic team. The primary goal of diabetes education is to provide knowledge and skills to facilitate self-care behavior and help patients make informed self-management decisions. This type of lifestyle management known as diabetes self-management education and support (DSMES) is associated with lower HbA1c [51], lower all-cause mortality risk [52], and improved quality of life [53]. Despite ample evidence of the benefits of DSMES and B-level guideline recommendation, this service is underutilized. Only 6.8% of privately insured and 5% Medicare beneficiaries with diabetes take part in diabetes education, even though covered by most insurances [54, 55]. Through integration of CDCES in cardiometabolic clinic, we hope to make diabetes self-management and education a consistent part of standardized diabetes care.

Specialized Rehabilitation Physicians

Patients with previous cardiac events would be able to visit a cardiac rehabilitation specialist. Especially since hospitalization for serious cardiovascular events has shortened, outpatient rehabilitation is becoming more important. However, of eligible patients with previous MI, only 14–35% participated in cardiac rehabilitation programs but use is higher when patients are referred to rehabilitation facilities [56]. The integration of rehabilitation facilities into the cardiometabolic clinic and adding it to the standardized cardiometabolic treatment program would increase use of rehabilitation and improve outcomes.

Pharmacist

Incorporating clinical pharmacists in primary care settings significantly increased the percentage of patients with controlled hypertension and reduced medical expenditures [57]. Interdisciplinary, team-based interventions, such as facilitated in the cardiometabolic clinic, are particularly effective in improving outcome. Results suggest that involving pharmacists or nurses in team-based care is the most potent strategy to successfully control blood pressure [58]. Apart from managing complex medication plans, pharmacists would assist with time-consuming tasks, like drafting appeal letters for non-formulary medications such as the PSCK9 inhibitor drugs. Finally, pharmacists can improve medication adherence by reducing drug expenditure, one of the major causes for non-adherence [59]. Pharmacists employed in cardiac out-patient clinics facilitated cost-saving interventions like discount programs and copay interventions, resulting in a yearly 852$ cost avoidance per patient [60].

Patient Referral

Primary care physicians, endocrinologists, and cardiologists who are overwhelmed or with too little expertise in certain areas of cardiometabolic medicine would refer patients. Additionally, the cardiometabolic clinic would manage follow-up care after cardiometabolic surgery (bariatric, vascular, or cardiothoracic) as part of patient’s rehabilitation program. Patient referral could also be initiated by nurse practitioners, who could educate patients on benefits of the cardiometabolic clinic.

Example of Patients Benefitting from the Cardiometabolic Clinic

Type 1 Diabetes

The cardiometabolic clinic would be particularly beneficial for patients with T1DM. Limited data, primarily in the form of observational studies, exist on assessment and sustenance of cardiovascular health in T1DM patients. Data from randomized controlled trials and cohort studies chiefly refer to T2DM patients or make no distinction between types [61]. As a result, the underlying pathogenesis of the relationship between CVD and T1DM is not well understood and CVD treatment of T1DM patients has mainly been adapted from observational data sets or CVOTs in T2DM. Through the implementation of a dedicated cardiometabolic clinic, physicians working there would see more T1DM patients with CVD or at high risk and thereby gain more expertise in effectively treating this disease constellation.

Complex Patients

Multi-morbid, complex patients with multiple risk factors especially require an interdisciplinary treatment approach and would benefit from the cardiometabolic clinic. For example, a traditional cardiologist would perhaps be unsure of optimal therapeutic strategy for a 56-year-old obese (BMI 34 kg/m2) woman with T2DM patient taking four medications to treat diabetes (excluding insulin). Her levels of glycemia and lipids are equally worrisome, with HbA1c of 8.5% and triglycerides of 350 mg/dL, respectively. Her blood pressure is 150/88 and the echocardiogram reveals HF with preserved ejection fraction. This patient suffers from multiple comorbidities which require coordinated care by a cardiologist, endocrinologist, and obesity specialist. In the cardiometabolic clinic, even patients like this complex patient would receive comprehensive care. The clinic would also provide high-quality care for high-risk, under-represented populations demanding more intensive consideration such as patients with immunodeficiency syndromes, cancer survivors, and mentally handicapped individuals [62].

Boundaries

The cardiometabolic clinic will focus on primary and secondary prevention of ASCVD and diabetes and will not offer some advanced treatments offered in typical cardiology and endocrinology clinics. Electrophysiology is not part of physician training, and therefore treatment of cardiac arrythmias will not take place in this clinic. Similarly, interventional cardiology as well as expertise regarding advanced HF or cardiac transplantation will not be offered. We envision an outpatient clinic, and therefore this setting would not be suitable for intensive care patients. For example, patients with advanced HF and possible complications such as pulmonary edema with acute respiratory failure or pneumonia would require hospitalization with likely admission to the intensive care unit (ICU). Similarly, patients with cardiogenic shock requiring intensive hemodynamic monitoring and ventilatory support in the form of intubation and mechanical ventilation would not be treated in the cardiometabolic clinic. Physicians will not treat endocrinological disease not connected to cardiometabolic diseases, such as thyroid disease, hypothalamic/pituitary disease, or metabolic bone disease. Diagnosis and treatment of disorders of the reproductive axis would also not be implemented in this setting. Despite the increasing prevalence of T2DM among children and the micro- and macro-vascular complications associated with early onset, pediatric endocrinologists would for now be better suited to treat this subgroup [63]. However, cardiometabolic physicians would be available for consultations for children with cardiometabolic disease.

Cardiometabolic Clinic Within the Health System

Value-Based-Care

The value-based care model reimburses physicians and health care organization by positive health outcomes. Health care systems in the USA and in much of the rest of the world are dominated by the “fee-for-service” model, which compensates physicians by number of tests and procedures, regardless of patient outcome. A value-based care model incentivizes clinics to deliver the most high-quality care to avoid any cost-intensive complications of cardiometabolic disease in the future. The cardiometabolic clinic is well suited for a value-based care model, as the preventive-care approach reduces progression of chronic cardiovascular and metabolic diseases. As a result, patients require fewer diagnostic tests and procedures, which reduces cost. A nationwide study of 120 payers commissioned by Change Healthcare found an average reduction of 5.6% of medical cost savings after adopting value-based care strategies [64]. Improved care quality was reported by 77% of payers.

Reducing Costs

Comprehensive preventive care as the cardiometabolic clinic would provide lowers healthcare expenditure, primarily by reducing costly hospitalization. Costs for preventable hospitalizations by primary preventive care is estimated to exceed 30$ billion annually [65]. Free ambulatory clinics often treat chronic illness of uninsured patients by regular monitoring, providing prescription medication and lab diagnostics [66]. A study using North Carolina hospital discharge data demonstrated that uninsured adults had a 8.0% reduced odds of hospitalization for conditions which could have been mitigated by appropriate primary care after receiving regular treatment from free ambulatory clinics [66]. By preventing hospitalization of conditions caused by cardiometabolic disease, the cardiometabolic clinic could be equally successful in reducing hospitalization and healthcare costs. Existing preventive care models with similar concepts to the cardiometabolic clinic demonstrated lower healthcare costs and improved clinical care quality for beneficiaries. For example, the annual wellness visit (AWV) eligible to Medicare recipients prioritizes preventive care elements, such as treating mental health conditions and screening for risk factors, rather than addressing acute complaints [67]. AWV was associated with a significant reduction of patient’s healthcare costs, mainly driven by reduction of hospital acute care and hospital outpatient non-emergency department spending [67]. Additionally, the new comprehensive and well-coordinated model of care outlined here would reduce repeat diagnostic testing and trips to other clinics for patients, thereby reducing health care costs. An outpatient clinic would also be more profitable by reduced operating and staffing costs.

Health Insurance

Regular health insurance would cover treatments in the cardiometabolic clinic. However, all patients referred to the clinic would be referred as “new patients,” as cardiometabolic medicine would be categorized as a separate specialty and not part of cardiology or endocrinology clinics.

Example

Our vision of the cardiometabolic clinic and its benefits is best delineated by an example. Take Mr. Morris, a 60-year old overweight (BMI 28) male with T2DM managed with basal insulin who suffered a myocardial infarct (MI) 2 years ago, who comes for his 15-min visit at his general practitioner’s office. Of recent he has experienced shortness of breath on exertion and palpitations.

His blood pressure is elevated at 140/90 and his LDL-C level is 110 mg/dL. His primary care physician would alter blood pressure and lipid-lowering medication as well as evaluate insulin therapy and antiplatelet medications. He might be able to carve out a couple of minutes to discuss lifestyle interventions including dietary modifications, but in light of other pressing matters, this would not be a priority. In addition, Mr. Morris would be referred to other specialists. The cardiologist may further alter blood pressure medications, statins and perhaps prescribe ezetimibe or a PCSK-9 inhibitor, despite previous changes already made by the primary care physician. The endocrinologist would be more proficient in insulin adjustments but may have limited experience in obesity pharmacotherapy and cardiovascular comorbidities. It is unclear which physician would prescribe “cardiometabolic” drugs like GLP-1 RAs or SGLT-2 inhibitors. At all three appointments, physicians would re-take his blood levels and blood pressure. However, most likely none of the specialists would be able to coordinate the complex management of diabetes, lipids, blood-pressure, obesity and existing CVD and related lifestyle and medications interact in cardiometabolic patients like Mr. Morris.

This example outlines the unfortunate reality of the fractionated care many patients with cardiometabolic disease receive. In contrast, in the cardiometabolic clinic, Mr. Morris would receive a comprehensive and personalized cardiometabolic treatment program. Since the cardiometabolic physician is in charge of diagnostics and prescribing lifestyle modifications and medications, there is evidence-based evaluation and reduced chance of unnecessary testing or procedures. In addition, because of intensive counseling sessions with the cardiometabolic nurse as well as nutritionists, rehabilitation physicians, and behavioral psychologists, Mr. Morris would receive holistic advice on diet and physical activity as well as addressing psychological factors of cardiometabolic disease. Moreover, Mr. Morris will feel much more involved in his treatment, and working with the cardiometabolic team can make informed decisions to follow.

Conclusion

The imminent need to create a new care model to treat patients with cardiometabolic disease is one of the most important tasks in our current health care systems. The cardiometabolic clinic would facilitate interdisciplinary collaboration between different professionals to enable a comprehensive treatment of the cardiometabolic patient.

Cardiometabolic medicine as a distinct medical subspecialty has to be approved by the American Board of Internal Medicine. Until then, cardiometabolic medicine modules could be introduced in medical school, as well as offering continuous medical education (CME) and other cardiometabolic medicine certification programs to physicians. Thereafter, the cardiometabolic physician training program has to fully develop and successfully educate cardiometabolic specialists. To create a cardiometabolic clinic, a more detailed analysis of financial models and management strategies in this setting is necessary. Further research on the benefits for patient experience and outcomes of preventive care clinics is required. Once the cardiometabolic clinic is established, we hope to expand this model by encouraging research in the field of cardiometabolic medicine.