Course

Nutrition for a Healthy Heart

Course Highlights


  • In this Nutrition for a Healthy Heart course, we will learn about types of heart disease, risk factors, and the impact of diet and nutrition on cardiovascular health. 
  • You’ll also learn heart-healthy eating principles, including macronutrient intake, essential vitamins and minerals, fiber, and the importance of limiting saturated fats, trans fats, cholesterol, salt (sodium), processed foods, and added sugars. 
  • You’ll leave this course with a broader understanding of how to educate patients on heart-healthy dietary choices, empowering them to adopt lifestyle changes that reduce the risk of cardiovascular events. 

About

Contact Hours Awarded: 1

Course By:
R. E. Hengsterman MSN, RN 

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The following course content

Introduction   

Research indicates that a heart-healthy diet is a powerful tool for the prevention and control of cardiovascular disease [1]. A heart-healthy dietary approach to wellness emphasizes the intake of the appropriate proportions of macronutrients, essential vitamins, minerals, and fiber while minimizing the consumption of saturated fats, trans fats, cholesterol, salt (sodium), and the reduction of processed foods, trans-fats, and added sugars [2] [3]. The cornerstone of the diet includes an abundance of fresh fruits and vegetables, whole grains, lean proteins, and healthy fats [2].  

For healthcare providers and patients, the goal of adopting a heart-healthy diet is multifaceted. The diet aims for a reduction in overall cardiometabolic risk, improving blood pressure, lowering cholesterol levels, reducing the risk of developing heart disease and stroke, and preserving the overall health of the circulatory system [3].  

Nurses play a pivotal role in patient education and promoting heart-healthy lifestyles by empowering patients with knowledge and skills related to nutrition and dietary choices. This course aims to equip nurses with comprehensive knowledge of heart-healthy eating principles, enabling them to guide and educate their patients.  

The adoption of healthy lifestyle choices, with nutrition being the most important behavioral factor, is estimated to reduce the risk of myocardial infarction (MI) by 81–94% [5][6][7]. In comparison, treatment with pharmacotherapies alone results in a 20–30% reduction [8]. 

 

 

 

Quiz Questions

Self Quiz

Ask yourself...

  1. Why is nutrition considered the most important behavioral factor in reducing the risk of myocardial infarction (MI) compared to pharmacotherapies alone? 

Heart Disease: A Brief Overview 

Heart disease remains one of the leading causes of morbidity and mortality worldwide, with diet and nutrition playing a crucial role in both its development and prevention [4]. Cardiovascular diseases, also known as CVDs, are the primary cause of death worldwide, claiming an estimated 17.9 million lives per year [4].  

Cardiovascular disorders affect the heart and blood vessels, manifesting in coronary heart disease, cerebrovascular disease, rheumatic heart disease, and others. More than four out of five CVD fatalities stem from heart attacks and strokes, with one-third of these deaths occurring in individuals under the age of 70 [4].  

The term “heart disease” encompasses various conditions affecting the heart’s structure and function, many of which are influenced by dietary habits [9]. Cardiovascular risk factors, including malnutrition, tobacco and alcohol use, stress, obesity, sedentary lifestyle, hypertension, diabetes, hyperlipidemia, and genetic predisposition, can increase an individual’s likelihood of developing cardiovascular diseases [10] [12].  

The modifiable risk factors include sedentary lifestyle, smoking, high blood pressure, diabetes, hypercholesterolemia [12]. Almost three quarters of patients (73%) had at least three risk factors compared to 31% of healthy subjects. 

Family history of cardiovascular disease (CVD) is a significant independent risk factor for premature coronary heart disease (CHD). The risk of premature CHD increases in a linear fashion as the number of affected family members grows. [11]. Cardiovascular risk factors, including malnutrition, tobacco and alcohol use, stress, obesity, sedentary lifestyle, hypertension, diabetes, hyperlipidemia, and genetic predisposition, can increase an individual’s likelihood of developing cardiovascular diseases [10].  

The five modifiable risk factors include sedentary lifestyle, smoking, high blood pressure, diabetes, and hypercholesterolemia [10]. A higher proportion of cardiovascular patients (73%) had at least three risk factors compared to healthy individuals, where less than one-third had three or more risk factors [10]. 

 

Quiz Questions

Self Quiz

Ask yourself...

  1. What are the key dietary factors that contribute to the development of cardiovascular diseases (CVDs)? 
  2. How do modifiable risk factors, such as sedentary lifestyle, smoking, high blood pressure, diabetes, and hypercholesterolemia, increase an individual’s likelihood of developing CVDs? 
  3. Why is a family history of CVD considered a significant independent risk factor for premature coronary heart disease (CHD)? 

Types of Heart Disease / Statistics 

There are multiple types of heart disease, each with distinct mechanisms and implications for dietary management [13]. Coronary artery disease (CAD), heart failure, hypertensive heart disease, and arrhythmias represent a fraction of these conditions. The four main types of CVD include coronary heart disease, stroke, peripheral arterial disease, and aortic disease [15].  

Coronary artery disease (CAD) is the most common type of heart disease [14]. Cerebrovascular disease is the second leading cause of heart disease. Other forms of heart disease include congenital heart disease, heart valve disease, cardiomyopathy, pericardial disease, arrhythmia, and aortic dissection.  

Congenital heart disease (CHD) is the most common type of birth defect, affecting about 1 in 100 babies born in the United States [16]. CHDs can range from mild to severe and can affect the heart’s structure, function, or both [16].  

Heart valve disease is a condition in which one or more of the heart valves are damaged or diseased, which causes blood to flow backward through the valves, damaging the heart and other organs [17]. Heart valve disease affects 2.5% of the U.S population and can be caused by several factors, including infection, injury, and aging [17].  

Heart failure is the heart’s inability to pump blood, leading to symptoms such as fatigue, shortness of breath, swelling, chest pain, palpitations, weight gain, swelling in the ankles, legs, and abdomen, bloated or hard stomach, dry and hacking cough, and nausea [18] [19]. More than 6 million adults in the United States have heart failure [18].  

Cardiomyopathy represents a collection of diverse conditions of the heart which makes it weaker and less able to pump blood. Cardiomyopathy can be caused by several factors, including infection, toxins, and genetic disorders [20]. Due to the potential for underdiagnosis, estimates of cardiomyopathy prevalence can vary. It is estimated that up to 1 in 500 adults may be affected by this condition [21].  

Pericardial disease is a condition that affects the pericardium, the sac that surrounds the heart [22]. This can cause inflammation, infection, or scarring of the pericardium, which can interfere with the heart’s ability to function. Pericardial disease can manifest as acute pericarditis, pericardial effusion, cardiac tamponade, or constrictive pericarditis [22].  

Arrhythmia is a cardiac disorder characterized by an abnormal heart rhythm, manifesting as tachycardia (excessively rapid heartbeat), bradycardia (abnormally slow heartbeat), or irregular heartbeat patterns [23]. These irregularities can induce symptoms such as palpitations, dizziness, and syncope (fainting episodes) and can arise from various etiologies, including underlying heart conditions, electrolyte imbalances, and adverse effects of certain medications [23]. One in 18 people, or 5 percent of the U.S. population has an arrhythmia with a-fib (atrial fibrillation) being the most common [24].  

Aortic dissection is a rare, life-threatening condition in which the inner layer of the body’s main artery (aorta), tears [25]. This can cause blood to leak between the layers of the aorta, which can weaken the artery and cause it to rupture. Aortic dissection can be caused by several factors, including high blood pressure, atherosclerosis, and connective tissue disorders [25].  

Aortic dissection affects about 30 in 1 million people each year and more than 13,000 die each year [26]. Aortic dissection is most common in those individuals over the age of 60 and if not treated, the tear can worsen, ripping the outer layer of the aorta and allowing blood to escape the artery [25] [26]. As many as 40 percent of individuals who suffer from an aortic dissection die, and the risk of death increases by 3-4 percent every hour the condition is left untreated [26]. 

Quiz Questions

Self Quiz

Ask yourself...

  1. What are the distinct mechanisms and implications for dietary management of different types of heart disease? 
  2. How do the etiologies and clinical manifestations of heart valve disease, cardiomyopathy, and pericardial disease differ from each other? 
  3. What are the potential consequences of untreated arrhythmias, and how can lifestyle modifications and pharmacological interventions contribute to their management? 
  4. Why is aortic dissection considered a life-threatening condition, and what are the critical steps involved in its diagnosis and treatment? 

Evidence on Diet and Heart Health / Diet Options 

When considering the diet options for heart health, the Mediterranean diet, DASH diet, and plant-based diets are among the most researched and recommended. These diets share common elements such as an emphasis on whole foods, minimal intake of red meat, and a high volume of fruits and vegetables. Extensive research has demonstrated that the DASH dietary pattern lowers the risk of cardiovascular disease [37]. Numerous prospective studies have demonstrated the consistent benefits of the Mediterranean diet on cardiovascular health [30]. 

There is substantial evidence that most vascular events may be prevented by avoiding smoking, participating in regular physical activity, maintaining normal body mass index, and eating a healthy diet [27].  

Observational studies have demonstrated that dietary patterns rich in fruits and vegetables, excluding white potatoes, are linked to a lower risk of CVD [28] [29]. Regular consumption of whole grain foods has been linked to a reduced risk of cardiovascular disease (CVD), coronary heart disease (CHD), stroke, metabolic syndrome, and various cardiometabolic risk factors, as evidenced by robust observational studies and clinical trials [28]. Numerous randomized controlled intervention studies have demonstrated that replacing refined grains with whole grains leads to significant improvements in cardiovascular risk factors [28] [31].  

Except for a small trial that demonstrated a reduction in arrhythmia recurrences among regular drinkers with atrial fibrillation upon alcohol abstinence, no other studies have reported favorable outcomes associated with alcohol consumption for cardiovascular health [32].  

Dietary fiber, abundant in plant-based foods like fruits, vegetables, whole grains, nuts, seeds, beans, and legumes, have shown an inverse association with a lower risk of metabolic syndrome and cardiometabolic risk factors [33].  

A systematic review and meta-analysis provided evidence that substituting saturated fat with unsaturated fat can improve cardiovascular outcomes and reduce the risk of CVD [34]. Plant-based diets rich in foods like whole grains, fruits, vegetables, and nuts, have been linked to a reduced risk of cardiovascular events and intermediate risk factors [36].  

Current evidence does not support the widespread use of high-dose vitamin and mineral supplements for the prevention of cardiovascular disease (CVD) [28]. 

 

 

 

Quiz Questions

Self Quiz

Ask yourself...

  1. What are the common elements shared by the Mediterranean diet, DASH diet, and plant-based diets that contribute to their positive impact on heart health? 
  2. How does the evidence from observational studies and clinical trials support the link between regular consumption of whole grains and a reduced risk of cardiovascular diseases? 
  3. What are the potential mechanisms by which dietary fiber from plant-based foods exerts its protective effects against metabolic syndrome and cardiometabolic risk factors? 

Role of Sodium and Fats 

Sodium and fats hold significant impact over heart health. High sodium intake is associated with hypertension, a risk factor for heart disease, while certain types of saturated and trans fats, are linked to an increase in LDL cholesterol and the development of atherosclerosis [28]. A systematic review and meta-analysis revealed the detrimental effects of saturated fat on cardiovascular disease (CVD) outcomes and risk factors compared to unsaturated fat. [36] 

A strong body of evidence has documented the adverse effects of trans fatty acids on cardiometabolic risk factors [37]. Adhering to current recommendations to replace saturated fat from meat and dairy with nontropical plant oils also lowers dietary trans fatty acids [38]. 

Quiz Questions

Self Quiz

Ask yourself...

  1. How does the consumption of sodium and certain types of fats contribute to the development of cardiovascular diseases? 
  2. What dietary strategies can be implemented to reduce sodium intake and limit the consumption of saturated and trans fats, thereby promoting heart health? 

Healthy Eating Tips and Strategies 

Incorporating a heart-healthy diet into a patient’s lifestyle requires practical tips and strategies. First, make gradual changes instead of overhauling the entire diet. Meal planning can help with healthier choices.  

Setting realistic goals and collaborating with the patients to set achievable dietary goals. Controlling portion size, using smaller plates and bowls, prioritizing low-calorie, nutrient-rich foods like fruits and vegetables and limit high-calorie, high-sodium foods like refined, processed, or fast foods [39].  

Paying attention to the amount of saturated and trans fats, cholesterol, and sodium. Suggest lean protein sources such as fish, poultry, beans, and lentils and limit the intake of unhealthy fats and instead opt for healthy fats like those found in olive oil, avocados, and nuts [39].  

Consume at least five servings of fruit and vegetables daily [41]. Choose whole grains over refined grains and limit the intake of added sugars [28]. To have more control over the ingredients, cook and consume meals at home and make gradual changes to diet habits and build on those habits over time. 

Quiz Questions

Self Quiz

Ask yourself...

  1. How can healthcare providers collaborate with patients to set achievable dietary goals that align with their lifestyle and preferences? 
  2. What are some practical strategies for making gradual changes to a patient’s diet, ensuring adherence and long-term success in adopting heart-healthy eating habits? 

Patient Education 

Nurses are well positioned to provide patient education and counseling on heart-healthy eating. The core of patient education lies in translating knowledge into practice. Nurses must communicate with consideration of cultural, linguistic, and individual patient dietary preferences. Education should be patient-centered, with actionable steps that patients can integrate into their daily lives [40].  

Effective patient education strategies can include establishing a rapport, assessing the patient’s knowledge, and understanding, tailoring the educational approach, using plain language, incorporating visual aids, encouraging active participation, providing written materials and ongoing support and follow-up, and addressing any barriers and concerns [42]. 

Quiz Questions

Self Quiz

Ask yourself...

  1. How can nurses tailor their patient education strategies to address individual cultural, linguistic, and dietary preferences, ensuring that the information conveyed is relevant, understandable, and actionable for each patient? 

Resources 

A wealth of resources is available to support nurses in their role as patient educators, from professional organizations like the American Heart Association to local community programs and online platforms [43]. These resources offer educational materials, dietary guidelines, and support tools that nurses can utilize to enhance their teaching.  

A heart-healthy diet is one that is low in saturated and trans fats, cholesterol, and sodium. It is also high in fiber, fruits, vegetables, and whole grains [2][3]. Eating a heart-healthy diet can help to lower your blood pressure, cholesterol levels, and risk of heart disease [2]. 

The National Heart, Lung, and Blood Institute (NHLBI) has a website with information on heart-healthy eating, including recipes, meal plans, and tips for eating out. The American Heart Association (AHA) has a website with information on heart-healthy eating, including recipes, meal plans, and tips for shopping for heart-healthy foods.  

The Dietary Approaches to Stop Hypertension (DASH) diet is a heart-healthy eating plan that has been shown to lower blood pressure [45].  

The Mediterranean diet is a heart-healthy eating plan that has been shown to have several health benefits, including reducing the risk of heart disease, stroke, and type 2 diabetes [44]. You can find information about the Mediterranean diet on the Mayo Clinic website 

In addition to these websites, there are many cookbooks and other resources available on heart-healthy eating. Patients can also talk to their doctor or a registered dietitian for personalized advice on how to eat a heart-healthy diet. 

Quiz Questions

Self Quiz

Ask yourself...

  1. How can nurses utilize the wealth of resources available, such as those from professional organizations and online platforms, to enhance their patient education on heart-healthy eating? 
  2. How can nurses convey the key principles of heart-healthy eating, such as limiting saturated and trans fats, cholesterol, and sodium while emphasizing fiber, fruits, vegetables, and whole grains? 
  3. How can nurses guide patients towards reputable and reliable resources, such as those from the National Heart, Lung, and Blood Institute, the American Heart Association, and the Mayo Clinic, to ensure that they have access to accurate and evidence-based information on heart-healthy eating? 

Conclusion

In conclusion, adopting a heart-healthy diet is a crucial step towards maintaining cardiovascular well-being and overall health [30]. The nurse’s role as a patient educator in promoting a heart-healthy diet is pivotal. By leveraging a position of trust and frequency of contact with patients, nurses can champion dietary choices that can reduce the risk and impact of heart disease.  

Research underscores the importance of a balanced intake of nutrients to support the cardiovascular system’s health, emphasizing whole foods, lean proteins, healthy fats, and a reduction in sodium, saturated fats, and sugars [3]. 

Patients adopting a heart healthy diet require a multifaceted approach, combining knowledge with actionable steps that are practical and sustainable. The role of healthcare professional is instrumental in this dietary transition.  

A heart-healthy diet offers a multitude of benefits beyond reducing heart disease risk. It can improve blood pressure control, lower cholesterol levels, promote healthy weight management, and enhance overall energy levels [2][3]. A heart-healthy diet can contribute to a stronger immune system, reduced inflammation, and improved mental clarity [46]. 

Quiz Questions

Self Quiz

Ask yourself...

  1. How can nurses bridge the gap between knowledge and practice when educating patients about heart-healthy eating, ensuring that patients understand the rationale behind dietary recommendations and can translate that knowledge into sustainable dietary changes? 
  2. How can nurses emphasize the broader health benefits of a heart-healthy diet beyond reducing heart disease risk, motivating patients to adopt sustainable dietary changes for their overall well-being? 

References + Disclaimer

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