About Liv

What Does AVR Stand for in Medical Terms and Cardiology?

Last Updated on November 27, 2025 by Bilal Hasdemir

What Does AVR Stand for in Medical Terms and Cardiology?
What Does AVR Stand for in Medical Terms and Cardiology? 2

When it comes to heart health, understanding the meaning of Aortic Valve Replacement (AVR) is vital for informed treatment choices.

At Liv Hospital, we recognize the importance of AVR in cardiology. AVR is a surgical procedure where the malfunctioning aortic valve of the heart is replaced. Recent advancements in AVR technology have improved outcomes, with modern studies supporting early intervention even in select asymptomatic cases.

Our patient-centered approach ensures that international patients receive the latest in heart valve solutions. We understand the concerns of those seeking advanced medical treatments and are committed to providing world-class healthcare with complete support.

Key Takeaways

  • AVR stands for Aortic Valve Replacement, a surgical procedure to replace the malfunctioning aortic valve.
  • Recent advancements in AVR technology have improved treatment outcomes.
  • Liv Hospital provides patient-centered care with the latest heart valve solutions.
  • Early intervention is now supported by modern studies, even in select asymptomatic cases.
  • Our team is committed to providing world-class healthcare with complete support for international patients.

Understanding What AVR Stands for in Medical Terminology

A high-quality medical illustration of the "AVR" medical abbreviation. The image shows a close-up view of the abbreviation against a clean, minimalist background. The lettering is rendered in a crisp, modern sans-serif font, with the individual characters standing out in a bold, legible manner. The overall composition is well-balanced, with the abbreviation positioned centrally and taking up a substantial portion of the frame. The lighting is soft and diffused, creating a professional, clinical atmosphere. The perspective is slightly elevated, conveying a sense of authority and importance. The color palette is muted, primarily consisting of shades of grey and blue, reinforcing the medical and scientific nature of the subject matter.

The medical abbreviation AVR stands for Aortic Valve Replacement, a procedure that has revolutionized the treatment of aortic valve disorders. AVR is a critical intervention for conditions like aortic stenosis or aortic regurgitation, where the aortic valve is either narrowed or leaking, respectively.

Definition and Primary Usage in Cardiology

In cardiology, AVR refers to the surgical replacement of the aortic valve with either a mechanical or biological prosthetic valve. This procedure is primarily used to treat severe aortic valve diseases that can lead to significant morbidity and mortality if left untreated.

We use AVR to address life-threatening conditions such as severe aortic stenosis, where the valve narrows, restricting blood flow from the heart, or aortic regurgitation, where the valve leaks, causing blood to flow back into the heart.

Common Contexts Where AVR is Referenced

AVR is commonly referenced in various medical contexts, including:

  • Pre-operative assessments for patients undergoing cardiac surgery
  • Post-operative care and follow-up for patients who have undergone AVR
  • Clinical discussions and case presentations in cardiology and cardiac surgery
  • Research studies and publications focusing on aortic valve disease and treatment outcomes

Distinguishing AVR from Other Cardiac Abbreviations

It’s essential to distinguish AVR from other cardiac abbreviations to ensure accurate communication among healthcare professionals. For instance:

  1. AVR is often confused with AVN (Atrioventricular Node), which refers to a different aspect of cardiac anatomy and function.
  2. Other abbreviations like TAVR (Transcatheter Aortic Valve Replacement) are related to AVR but represent a specific minimally invasive approach to aortic valve replacement.

Understanding these distinctions is crucial for clear and effective communication in cardiology and cardiac surgery.

The Anatomy and Function of the Aortic Valve

Detailed cross-section illustration of the human aortic valve anatomy, rendered in high resolution and medical accuracy. The foreground depicts the aortic valve leaflets, their intricate cusps, and the supporting annulus in crisp detail. The middle ground showcases the surrounding aortic root structures, including the ascending aorta and sinotubular junction. The background subtly fades into a neutral, clean environment to focus attention on the valve anatomy. Lighting is soft and even, emphasizing the three-dimensional form and texture of the valvular components. The angle is an angled side view, providing a clear, unobstructed look at the valve's internal architecture.

The aortic valve is a crucial component of the heart’s anatomy, playing a vital role in maintaining cardiac health. It is located between the left ventricle and the aorta, the largest artery in the body, ensuring that blood flows properly from the heart to the rest of the body.

Normal Aortic Valve Structure

The normal aortic valve has three cusps or leaflets that open and close in sync with the heartbeat. These cusps are delicate and robust, designed to withstand the constant pressure and flow of blood. The valve’s structure is crucial for its function, allowing it to open fully during systole (when the heart contracts) and close tightly during diastole (when the heart relaxes).

The Role of the Aortic Valve in Cardiac Function

The aortic valve plays a pivotal role in cardiac function by regulating the flow of blood from the left ventricle into the aorta. During systole, the valve opens, allowing blood to be pumped out of the heart into the systemic circulation. Conversely, during diastole, the valve closes, preventing backflow into the left ventricle. This ensures efficient circulation and maintains the heart’s ability to pump blood effectively.

Blood Flow Dynamics Through the Aortic Valve

Blood flow dynamics through the aortic valve are complex, involving laminar flow patterns that are crucial for the valve’s proper functioning. Any disruption in these flow patterns, such as turbulence or stenosis, can lead to valve dysfunction. The normal aortic valve allows for smooth, efficient blood flow, which is essential for maintaining cardiac output and overall cardiovascular health.

Recent advancements in medical technology, such as the development of innovative prosthetic valves like Anteris Technologies’ DurAVR, highlight the importance of replicating natural valve anatomy and physiology. Such advancements aim to improve outcomes for patients undergoing aortic valve replacement (AVR), enhancing their quality of life and cardiac function.

Conditions That Necessitate Aortic Valve Replacement

Several conditions affecting the aortic valve necessitate replacement to restore normal cardiac function. The aortic valve plays a crucial role in ensuring blood flows properly from the heart to the rest of the body. When this valve is compromised, it can lead to significant health issues, often requiring surgical intervention.

Aortic Stenosis: Causes and Progression

Aortic stenosis is a condition characterized by the narrowing of the aortic valve opening, which can cause an obstruction to blood flow. This narrowing can result from various factors, including age-related calcification, congenital valve abnormalities, and rheumatic fever. As the condition progresses, patients may experience symptoms such as chest pain, shortness of breath, and fainting. If left untreated, severe aortic stenosis can lead to heart failure and death.

Key Factors Contributing to Aortic Stenosis:

  • Age-related calcification
  • Congenital valve abnormalities
  • Rheumatic fever

Aortic Regurgitation: Pathophysiology

Aortic regurgitation occurs when the aortic valve fails to close properly, allowing blood to flow back into the left ventricle. This condition can result from valve leaflet damage or diseases affecting the aortic root. The pathophysiology involves volume overload on the left ventricle, leading to ventricular dilation and potentially heart failure if not addressed. Symptoms may include palpitations, shortness of breath, and fatigue.

Congenital Aortic Valve Defects

Congenital aortic valve defects are abnormalities present at birth that affect the structure and function of the aortic valve. These defects can range from mild to severe and may require surgical intervention early in life. Common types include bicuspid aortic valve, where the valve has only two cusps instead of three. Patients with congenital defects may be at risk for complications such as aortic stenosis or regurgitation.

Infective Endocarditis and Valve Damage

Infective endocarditis is an infection of the heart valves, which can cause significant damage to the valve structure. This condition is more common in individuals with pre-existing heart valve abnormalities. The infection can lead to valve dysfunction, necessitating surgical replacement. Patients with a history of endocarditis may require close monitoring and potentially AVR to address valve damage.

Condition Description Potential Complications
Aortic Stenosis Narrowing of the aortic valve Heart failure, death
Aortic Regurgitation Leakage of the aortic valve Ventricular dilation, heart failure
Congenital Defects Abnormalities present at birth Aortic stenosis, regurgitation
Infective Endocarditis Infection of the heart valves Valve damage, necessitating AVR

Understanding these conditions is crucial for determining the need for AVR. Around 3 to 6 percent of people over 70 years require AVR due to degenerative disease, highlighting the importance of timely diagnosis and treatment.

Diagnosing Aortic Valve Disorders

Diagnosing aortic valve disorders involves a multifaceted strategy that encompasses clinical assessment, imaging, and laboratory tests. Accurate diagnosis is critical for determining the need for Aortic Valve Replacement (AVR) and planning the appropriate treatment.

Clinical Presentation and Symptoms

Patients with aortic valve disorders often present with symptoms such as chest pain, shortness of breath, and fatigue. The clinical presentation can vary depending on the severity and type of valve disorder. For instance, aortic stenosis may present with symptoms of heart failure, while aortic regurgitation might cause palpitations and dyspnea.

We evaluate these symptoms through a detailed medical history and physical examination, which includes listening for heart murmurs characteristic of valve disorders.

Diagnostic Imaging Techniques

Diagnostic imaging plays a crucial role in assessing the severity of aortic valve disorders. Techniques such as echocardiography, cardiac MRI, and CT angiography provide valuable information on valve morphology and function.

Echocardiography is particularly useful for evaluating valve stenosis or regurgitation, while cardiac MRI offers detailed images of the valve and surrounding structures.

Laboratory Tests and Biomarkers

Laboratory tests, including biomarkers like B-type natriuretic peptide (BNP), help in assessing the severity of heart failure associated with aortic valve disorders. Elevated BNP levels can indicate increased ventricular stress.

Severity Assessment and Surgical Indications

Assessing the severity of aortic valve disorders is crucial for determining the need for surgical intervention. We use a combination of clinical findings, imaging results, and symptom severity to guide decisions about AVR.

Diagnostic Criteria Severity Assessment Surgical Indications
Valve Area, Gradient Mild, Moderate, Severe Symptomatic Patients
Echocardiography Findings Valve Morphology Asymptomatic with High-Risk Features
BNP Levels Heart Failure Severity Presence of Comorbidities

Understanding what AVR stands for in medical terms and its implications is essential for managing aortic valve disorders effectively. By combining clinical evaluation with advanced diagnostic techniques, we can determine the most appropriate treatment plan for patients.

Types of Prosthetic Valves Used in AVR

In AVR, the type of prosthetic valve used can significantly impact the patient’s quality of life post-surgery. The choice between mechanical and biological valves depends on various patient-specific factors, including age, lifestyle, and comorbidities.

Mechanical Valves: Benefits and Considerations

Mechanical valves are known for their durability and long lifespan. They are typically made from materials like titanium or pyrolytic carbon, which are designed to withstand the rigors of cardiac function. However, patients with mechanical valves require lifelong anticoagulation therapy to prevent valve thrombosis and thromboembolic events.

The benefits of mechanical valves include their high durability and resistance to wear and tear. Nonetheless, the need for lifelong anticoagulation therapy is a significant consideration, as it increases the risk of bleeding complications.

Biological Valves: Types and Durability

Biological valves, on the other hand, are derived from animal tissues, such as porcine or bovine pericardium. These valves are less likely to cause blood clots, reducing the need for long-term anticoagulation therapy. However, they may have a limited lifespan and could require replacement.

Biological valves offer the advantage of reduced anticoagulation therapy, making them suitable for patients who cannot tolerate blood thinners. The main consideration with biological valves is their potential for degeneration over time, which may necessitate reoperation.

Selecting the Appropriate Valve Type for Patients

The selection of the appropriate valve type for AVR involves a comprehensive assessment of patient factors, including age, lifestyle, and the presence of comorbid conditions. For instance, younger patients may benefit from mechanical valves due to their durability, while older patients might be more suited to biological valves to avoid long-term anticoagulation.

Recent advancements in prosthetic valve technology have improved the durability and performance of both mechanical and biological valves. Our team considers these advancements when making recommendations tailored to each patient’s unique needs.

Valve Type Durability Anticoagulation Therapy Suitability
Mechanical High Lifelong Younger patients
Biological Limited Short-term or none Older patients or those intolerant to anticoagulants

Surgical AVR (SAVR): The Traditional Approach

The surgical approach to Aortic Valve Replacement, known as SAVR, has a long history of successful outcomes. As a traditional method, SAVR has been refined over the years to address various aortic valve conditions effectively.

Surgical Procedure Overview

SAVR involves open-heart surgery where the surgeon replaces the diseased aortic valve with a prosthetic one. The procedure typically requires a sternotomy, allowing direct access to the heart. We use cardiopulmonary bypass to maintain blood circulation while the heart is stopped.

The surgical team carefully removes the damaged valve and implants a mechanical or biological prosthesis. The choice between these types depends on several factors, including the patient’s age, lifestyle, and other health conditions.

Recovery and Post-Operative Care

Post-operative care is crucial for a successful SAVR outcome. Patients typically spend several days in the intensive care unit (ICU) for close monitoring. We focus on managing pain, preventing infection, and ensuring proper wound care.

Rehabilitation plays a significant role in recovery, with a structured program helping patients regain strength and mobility. We also educate patients on lifestyle modifications to support long-term health.

Risks and Complications

As with any major surgery, SAVR carries potential risks and complications. These may include bleeding, infection, stroke, and adverse reactions to anesthesia. We carefully assess each patient’s risk factors to minimize these risks.

Long-term complications can involve prosthetic valve dysfunction or the need for anticoagulation therapy, particularly with mechanical valves. Regular follow-up appointments are essential to monitor for these potential issues.

Risks/Complications Description Management
Bleeding Excessive bleeding during or after surgery Close monitoring, blood transfusions
Infection Infection of the surgical site or prosthetic valve Antibiotics, wound care
Stroke Neurological damage due to blood clots or other factors Anticoagulation therapy, rehabilitation

Long-term Outcomes of SAVR

SAVR has a proven track record of improving survival and quality of life for patients with severe aortic valve disease. Long-term outcomes depend on various factors, including the type of prosthetic valve used and the patient’s overall health.

Studies have shown that both mechanical and biological valves have their advantages and disadvantages. Mechanical valves are durable but may require lifelong anticoagulation, while biological valves have a limited lifespan but typically do not require long-term anticoagulation.

We continue to monitor patients long-term to address any emerging issues and optimize their care.

AVR Stands for Medical Innovation: Transcatheter Approaches

Transcatheter aortic valve replacement (TAVR) has revolutionized the treatment of aortic valve disease, offering a minimally invasive alternative to traditional surgical aortic valve replacement (SAVR). As a significant innovation in the field of cardiology, TAVR has transformed the way aortic valve replacements are performed, providing new hope for patients who may not be ideal candidates for open-heart surgery.

TAVR Procedure Explained

The TAVR procedure involves the insertion of a catheter through a small incision, typically in the groin or chest, to deliver a new valve to the heart. This minimally invasive approach reduces the risk of complications and promotes faster recovery times compared to traditional SAVR. During the procedure, the cardiologist uses imaging guidance to position the new valve correctly, ensuring optimal function and minimizing the risk of adverse effects.

Patient Selection Criteria

Patient selection is a critical aspect of TAVR, as it determines the suitability of this procedure for individual patients. Key factors considered include the patient’s overall health, the severity of their aortic valve disease, and their risk profile for traditional surgery. Multidisciplinary teams work together to evaluate these factors and determine the most appropriate treatment plan for each patient.

Advantages Over Traditional SAVR

TAVR offers several advantages over traditional SAVR, particularly for patients at high risk for surgical complications. These benefits include reduced recovery time, less pain, and a lower risk of infection. Additionally, TAVR has been shown to improve survival rates and quality of life in certain patient populations, making it an attractive option for those who require aortic valve replacement.

Recent Advancements in TAVR Technology

Recent advancements in TAVR technology have further enhanced the safety and efficacy of this procedure. Innovations such as improved valve designs and more sophisticated delivery systems have expanded the range of patients who can benefit from TAVR. Ongoing research and development continue to push the boundaries of what is possible with TAVR, promising even better outcomes for patients in the future.

Epidemiology and Demographics of AVR Procedures

Understanding the demographics of patients undergoing AVR is essential for healthcare planning and resource allocation. As the global population ages, the prevalence of aortic valve disease is increasing, making AVR a critical component of cardiac care.

Prevalence of Aortic Valve Disease

Aortic valve disease is a significant health issue, particularly among the elderly. The prevalence of this condition increases with age, affecting a substantial proportion of individuals over 70 years old. We observe that aortic stenosis, a common form of aortic valve disease, is present in approximately 3% of people aged 75 or older.

Age Distribution of AVR Recipients

The age distribution of patients undergoing AVR reflects the prevalence of aortic valve disease among older adults. Most AVR recipients are between 70 and 80 years old, with a significant number being over 80. This demographic trend has implications for preoperative assessment, surgical risk evaluation, and postoperative care.

Statistical Trends in AVR Surgeries

There has been a notable increase in AVR surgeries over the past two decades, driven by advances in surgical techniques and an aging population. We are seeing a shift towards more minimally invasive procedures, such as Transcatheter Aortic Valve Replacement (TAVR), which is expanding the eligibility for AVR to higher-risk patients.

Year Total AVR Procedures TAVR Procedures SAVR Procedures
2010 50,000 5,000 45,000
2015 70,000 20,000 50,000
2020 100,000 50,000 50,000

Global Variations in AVR Practices

AVR practices vary globally, influenced by factors such as healthcare infrastructure, economic conditions, and clinical guidelines. There is a notable difference in the adoption of TAVR between different regions, with some countries embracing this technology more rapidly than others. Understanding these variations is crucial for developing global healthcare strategies and improving access to AVR.

Life After AVR: Prognosis and Quality of Life

Understanding life after AVR is crucial for patients who have undergone this significant cardiac surgery. AVR, or Aortic Valve Replacement, is a procedure that can significantly improve the quality of life for individuals with severe aortic valve disease.

Expected Outcomes and Survival Rates

Studies have shown that AVR significantly improves survival rates and quality of life for patients with severe aortic valve disease. Life expectancy following AVR is closely tied to patient age and underlying health conditions. Generally, patients who undergo AVR can expect a substantial improvement in their symptoms and overall health.

We have observed that the survival rates post-AVR are encouraging, with many patients experiencing a significant reduction in symptoms related to aortic valve disease. The procedure has become a cornerstone in the management of severe aortic stenosis and regurgitation.

Lifestyle Modifications Post-AVR

After AVR, patients are advised to make certain lifestyle modifications to ensure optimal recovery and long-term health. These modifications include dietary changes, regular exercise, and smoking cessation. It’s also crucial for patients to adhere to their medication regimen and attend follow-up appointments with their healthcare provider.

We recommend that patients adopt a heart-healthy lifestyle, which includes a balanced diet rich in fruits, vegetables, and whole grains. Regular physical activity, such as walking, is also encouraged to improve cardiovascular health.

Long-term Monitoring Requirements

Long-term monitoring is essential for patients post-AVR to ensure the prosthetic valve is functioning correctly and to detect any potential complications early. This monitoring typically involves regular echocardiograms and clinical assessments.

We emphasize the importance of these follow-ups, as they allow us to monitor the patient’s condition and make any necessary adjustments to their treatment plan. This proactive approach helps in managing potential issues before they become serious.

Managing Anticoagulation Therapy

For patients with mechanical AVR, managing anticoagulation therapy is a critical aspect of their long-term care. Anticoagulants help prevent blood clots from forming on the prosthetic valve, reducing the risk of stroke and other thromboembolic events.

We work closely with our patients to manage their anticoagulation therapy, ensuring that their international normalized ratio (INR) levels remain within the therapeutic range. This requires regular blood tests and potentially adjusting their medication dosage.

Special Considerations in AVR Decision-Making

The decision to undergo Aortic Valve Replacement (AVR) is multifaceted, involving various patient-specific considerations. As we delve into the intricacies of AVR, it’s crucial to understand the factors that influence this decision.

Age-Related Factors

Age plays a significant role in AVR decision-making. Older patients may face higher risks associated with surgery, while younger patients may benefit from longer-term valve durability. We must carefully weigh these factors when considering AVR for patients across different age groups.

In younger patients, the choice between mechanical and bioprosthetic valves is critical. Mechanical valves are more durable but require lifelong anticoagulation therapy, whereas bioprosthetic valves have a limited lifespan but reduce the risk of anticoagulation-related complications.

Comorbidities and Risk Assessment

The presence of comorbidities significantly impacts AVR decision-making. Conditions such as coronary artery disease, diabetes, and chronic kidney disease can complicate surgical outcomes. We conduct thorough risk assessments to determine the most appropriate treatment strategy for each patient.

  • Assessing the severity of comorbid conditions
  • Evaluating the patient’s overall health status
  • Considering the potential impact of AVR on comorbidities

Timing of Intervention: Symptomatic vs. Asymptomatic Patients

The timing of AVR is critical, particularly in asymptomatic patients. Recent studies support early intervention in select asymptomatic patients, highlighting the importance of individualized decision-making. We carefully monitor asymptomatic patients with severe aortic valve disease to determine the optimal time for intervention.

In symptomatic patients, AVR is often recommended promptly to alleviate symptoms and improve quality of life. The decision to proceed with AVR is based on a comprehensive evaluation of the patient’s condition and overall health.

Shared Decision-Making Process

The shared decision-making process is essential in AVR decision-making. We work closely with patients and their families to ensure that they are fully informed about the risks and benefits associated with AVR. This collaborative approach enables patients to make informed decisions that align with their values and preferences.

By considering patient-specific factors and engaging in shared decision-making, we can optimize outcomes for patients undergoing AVR. This personalized approach is critical in ensuring that patients receive the most appropriate care for their unique needs.

Conclusion: The Significance of AVR in Modern Cardiac Care

AVR, or Aortic Valve Replacement, is a critical intervention in cardiology, offering significant benefits for patients with aortic valve disease. We have seen how advances in AVR technology and techniques continue to improve patient outcomes, enhancing the quality of life for those affected by this condition.

In the context of avr medical terminology, understanding the role of AVR is crucial for both healthcare providers and patients. The avr healthcare abbreviation is commonly used in medical discussions, highlighting the importance of this procedure in cardiac care. As we continue to evolve in cardiac avr treatments, the focus remains on providing the best possible outcomes for patients.

By summarizing the significance of AVR in modern cardiac care, we emphasize its benefits and the ongoing advancements in the field. AVR stands for a beacon of hope for many patients, and its continued development is a testament to the advancements in medical technology and care.

As we move forward, the integration of innovative techniques and technologies will further enhance the avr in medical terms, ensuring that patients receive the most effective and personalized care possible.

FAQ

 

 

What does AVR stand for in medical terms?

AVR stands for Aortic Valve Replacement, a surgical procedure to replace the aortic valve with a prosthetic one.

What is the aortic valve’s role in cardiac function?

The aortic valve ensures blood flows from the heart’s left ventricle into the aorta, preventing backflow, and is crucial for maintaining normal cardiac function.

What conditions necessitate AVR?

Conditions such as aortic stenosis, regurgitation, congenital defects, and infective endocarditis may require AVR to restore normal valve function.

How is aortic valve disease diagnosed?

Diagnosis involves clinical evaluation, diagnostic imaging like echocardiography, laboratory tests, and assessing the severity of the condition to determine the need for AVR.

What types of prosthetic valves are used in AVR?

Mechanical and biological valves are used in AVR, with the choice depending on patient factors such as age, lifestyle, and the presence of other medical conditions.

What is the difference between SAVR and TAVR?

SAVR (Surgical Aortic Valve Replacement) is a traditional open-heart surgery, while TAVR (Transcatheter Aortic Valve Replacement) is a minimally invasive procedure that replaces the aortic valve through a catheter.

What are the benefits of TAVR over SAVR?

TAVR offers advantages such as reduced recovery time, less invasive procedure, and is often suitable for patients at higher risk for surgical complications.

What lifestyle modifications are necessary after AVR?

Patients may need to adopt lifestyle changes including diet, exercise, and managing anticoagulation therapy, if prescribed, to ensure optimal outcomes after AVR.

How is anticoagulation therapy managed after AVR?

Anticoagulation therapy management involves regular monitoring of blood clotting parameters and adjusting medication as necessary to prevent complications.

What are the long-term outcomes of AVR?

AVR can significantly improve survival rates and quality of life, though long-term outcomes depend on factors like valve type, patient health, and adherence to post-procedure care.

How does age influence the decision to undergo AVR?

Age is a consideration in AVR decision-making, as older patients may have different risks and benefits, and may be more suited to TAVR or other less invasive options.

What is the significance of AVR in modern cardiac care?

AVR represents a critical advancement in treating aortic valve disease, offering improved outcomes and quality of life for patients with severe valve conditions.

References:

  1. Aortic valve replacement – Wikipedia. (n.d.). Wikipedia. https://en.wikipedia.org/wiki/Aortic_valve_replacement
  2. Aortic Valve Replacement (AVR) – Sydney Heart and Lung Surgeons. (n.d.). Sydney Heart and Lung. https://sydneyheartandlung.com.au/surgery/heart-surgery/aortic-valve-replacement-avr/
  3. Heart valve replacement: Surgery, risks, and more. (n.d.). Medical News Today. https://www.medicalnewstoday.com/articles/heart-valve-replacement

Subscribe to Liv E-newsletter