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Left Ventricular Dysfunction (LV Dysfunction): Symptoms, Causes, Diagnosis and Treatment
Left Ventricular Dysfunction: Symptoms, Causes, Diagnosis, and Treatment Essay
Introduction
The term left ventricular dysfunction comprises all cardiomyopathies that are related to the decreased functionality of the heart’s left ventricle. Left ventricular dysfunction is a condition in which the heart’s ability to distribute oxygen-rich blood from the lungs to the aorta and other parts of the body is compromised (Shi et al., 2019). In fact, the dysfunction of the heart’s left ventricle is among the primary causes of mortality and morbidity. Thus, it is critical to prevent and control the condition and make the appropriate lifestyle changes to improve one’s quality of life.
Types of the Left Ventricular Dysfunction
Generally, the left ventricular dysfunction can be broadly divided into two primary types, namely, systolic and diastolic dysfunction. Systolic dysfunction involves the inability of the heart’s muscles to contract with the required force to pump blood to other tissues and parts of the body. In other words, it refers to the reduced ability of the left ventricle to eject blood, which is also known as decreased left ventricular ejection fraction. On the other hand, diastolic dysfunction refers to the inability of the heart’s ventricles to relax and fill with blood appropriately. Hence, diastolic heart failure is also called heart failure with normal left ventricular ejection fraction. Systolic and diastolic dysfunctions are types of heart failure.
Causes
Like many other diseases and conditions, left ventricular dysfunction can be caused by several factors. The most common ones include coronary artery disease or myocardial infarction, hypertension, heart valve problems, cardiomyopathy, diabetes, congenital heart disease, myocarditis, arrhythmia, obesity, and alcohol abuse.
Symptoms
The symptoms of left ventricular dysfunction can differ and range from one patient to another due to the broad impact of the condition. At the same time, the symptoms are generally explained by the reduced quantity of blood pumped by the left ventricle to the rest of the body. Generally, the symptoms of left ventricular dysfunction include the following:
1. Shortness of breath
2. Fatigue
3. Reduced amount of exercise one can perform
4. Swelling of the lower extremities
5. Coughing, especially at night
6. Palpitations
7. Chest pain
8. Weight gain
9. Impaired concentration as a result of reduced oxygen supply to the brain
Moreover, a patient with left ventricular dysfunction may also exhibit symptoms of congestive heart failure.
Diagnosis
The diagnosis of left ventricular malfunction generally involves the discussion of medical history, a physical examination, and a series of diagnostic tests. The following tests may be performed to diagnose the condition:
1. Echocardiogram: The test is primarily used to evaluate the ejection fraction, which refers to the percentage of blood pumped from the left ventricle.
2. An EKG or electrocardiogram: This test is performed to detect irregular heartbeats, also known as arrhythmias.
3. Chest X-ray: It is done to determine whether there is fluid retention in the lungs.
4. BNP blood test: This test is performed to determine whether the patient has an excessive amount of fluids in the body or heart failure.
5. MRI scan
6. Stress test
7. Coronary angiography
Treatment
The main goal of treatment is to improve the patient’s quality of life while managing the symptoms of the condition and slowing down the progression of the disease. The treatment of left ventricular dysfunction involves a combination of drug administration, procedures, and lifestyle changes, which are discussed below.
Drugs
There are a variety of drugs that can be administered to treat left ventricular malfunction. In general, the following drugs are recommended and are considered to be effective in patients with left ventricular dysfunction.
For patients with reduced left ventricular ejection fraction
• ACEIs or ARBs or ANG receptor-neprilysin inhibitors
• Beta-adrenergic blockers or mineralocorticoid receptor antagonists or sodium-glucose cotransporter-2 inhibitors or vasodilators or diuretics
For patients with systolic dysfunction
• Beta-adrenergic blockers or mineralocorticoid receptor antagonists or sodium-glucose cotransporter-2 inhibitors or vasodilators
• Anticoagulants or antiarrhythmics or drugs that help to reduce the workload of the heart
Procedures
In addition to the above drugs, the patient might also require some procedures to ensure the effective management of the condition. For example, coronary interventions, such as bypass grafting or angioplasty, may be performed on patients whose coronary artery disease is diagnosed. In addition, if the patient’s heart valves are damaged, the doctor may recommend heart valve repair or replacement. In some cases, a heart transplant may also be necessary.
Lifestyle Changes
The patient should also make several lifestyle changes in order to prevent further deterioration. For example, the patient needs to adopt a heart-healthy diet that is low in sodium. In addition, he or she needs to exercise more often. The patient must also quit smoking and restrict alcohol consumption. Moreover, it is critical to follow the doctor’s instructions and take drugs properly and to attend regular medical check-ups. Finally, the patient also needs to constantly monitor cholesterol levels, blood pressure, and blood sugar levels. Furthermore, it is also critical to make sure that secondary conditions, such as diabetes, stroke, and kidney disease, are prevented, and the drugs that help to prevent them are taken regularly. It is also crucial to limit alcohol consumption and smoking to reduce the risk of developing additional health problems.
Complications
Chronic heart failure, arrhythmia, fluid retention, cardiomyopathy, sudden death, stroke, and kidney failure are the most dangerous and severe complications of left ventricular dysfunction. In fact, left ventricular dysfunction tends to be very dangerous as it can lead to the development of multiple health issues, some of which may be life-threatening. Hence, patients should pay more attention to their health and consult doctors in case of suspicion of left ventricular dysfunction.
Conclusion
After discussing the causes, symptoms, diagnosis, and treatment of left ventricular dysfunction, it can be concluded that the condition should not be taken lightly. In other words, left ventricular dysfunction can lead to a number of uncomfortable and dangerous symptoms and is commonly caused by multiple factors, such as coronary artery disease, myocardial infarction, and hypertension. The symptoms of this condition are explained by the reduced amount of blood pumped from the heart’s left ventricle to other parts of the body; thus, a variety of tests, such as echocardiography, is required to determine the presence of the condition. Additionally, there is a variety of treatments that can help to manage left ventricular dysfunction, including the application of drugs and making lifestyle changes. Notably, drugs play a critical role in the prevention of the development of complications and management of symptoms; hence, they are of particular importance in the treatment of left ventricular dysfunction. Finally, the adoption of a healthier lifestyle is also significant in the management of the condition.
