Tricuspid regurgitation

Updated: June 20, 2024

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Background

Tricuspid regurgitation is a heart valve disorder characterized by the backflow of blood from the right ventricle to the right atrium during the contraction of the heart.

The tricuspid valve is located between the right atrium and the right ventricle and typically prevents the backward flow of blood. Tricuspid regurgitation is a relatively common anomaly, and structural alterations to any component of the tricuspid valve apparatus can lead to its onset.

Epidemiology

Tricuspid regurgitation has an incidence of 0.9% in the United States, and studies indicate that there are no discernible gender or racial variations in its occurrence. The manifestation of tricuspid regurgitation varies across age groups, contingent on its underlying causes.

Conditions such as Ebstein anomaly may be identified at birth or during early childhood. At the same time, rheumatic valvular disease emerges as the predominant form of tricuspid regurgitation in individuals aged 15 years and older.

Anatomy

Pathophysiology

The structural inadequacy of the tricuspid valve apparatus can stem from either primary abnormalities within the valve itself or secondary issues arising from myocardial dysfunction or dilation. Tricuspid regurgitation is characterized by the retrograde flow of blood from the right ventricle into the right atrium during systole.

In cases of mild to moderate tricuspid regurgitation, the right atrium’s compliant nature mitigates major hemodynamic consequences. However, in instances of severe regurgitation, right ventricular volume overload occurs, ultimately leading to right-sided congestive heart failure. This clinical presentation is marked by ascites, peripheral edema, and hepatic congestion.

The severity of tricuspid regurgitation intensifies during inspiration. The expansion of the right ventricle during inspiration leads to a corresponding enlargement of the tricuspid valve annulus, thereby improving the effective regurgitant orifice area.

Etiology

Primary Tricuspid Regurgitation

  • Rheumatic valve disease
  • Infective Endocarditis
  • Ebstein anomaly
  • Carcinoid syndrome
  • Marfan syndrome
  • Ehlers-Danlos
  • Marantic endocarditis
  • Trauma to chest wall

Secondary Tricuspid Regurgitation

  • Hyperthyroidism
  • Mitral stenosis or regurgitation
  • Left-sided heart failure
  • Pulmonary embolism
  • Pulmonary hypertension

Genetics

Prognostic Factors

Clinical History

Patients typically exhibit clinical manifestations indicative of right-sided heart failure, including ascites, painful hepatosplenomegaly, and peripheral edema. In severe cases, the presence of distended and pulsatile jugular veins results in noticeable pulsations in the neck. Additionally, exercise intolerance may be apparent.

The clinical presentation may also reflect the co-morbidities responsible for tricuspid regurgitation. For instance, if pulmonary hypertension is the cause, patients may experience symptoms such as shortness of breath, weakness, and exercise intolerance. In cases linked to infective endocarditis, a common precursor of tricuspid regurgitation, patients may present with episodes of fever.

Physical Examination

Jugular Venous Distension (JVD): Elevated right atrial pressure can lead to visible jugular venous distension. The presence of a prominent V wave may be observed, especially during inspiration (Kussmaul’s sign).

Systolic Murmur: A pansystolic murmur, often high-pitched, can be heard. It is the loudest in the fourth intercostal space in the parasternal region.

Ascites: Fluid accumulation in the abdominal cavity may lead to the clinical finding of ascites.

Atrial Fibrillation: Irregular heart rhythm, such as atrial fibrillation, may be present due to the atrial enlargement associated with chronic tricuspid regurgitation.

Right Ventricular Heave: Palpation of the chest may reveal a right ventricular heave, indicating the enlargement of the right ventricle.

S3 Gallop: The presence of an S3 gallop sound, indicative of a dilated right ventricle, may be noted during cardiac auscultation.

S4 Gallop: The presence of an S4 gallop sound, which occurs late in diastole and is associated with atrial contraction, may be detected. Its intensity tends to increase during inspiration.

Age group

Associated comorbidity

Associated activity

Acuity of presentation

Differential Diagnoses

Ascites

Atrial fibrillation

Biliary disease

Carcinoid tumor

Cardiogenic shock

Dilated cardiomyopathy

Eisenmenger syndrome

Ebstein anomaly

Laboratory Studies

Imaging Studies

Procedures

Histologic Findings

Staging

Treatment Paradigm

The choice of treatment is contingent upon factors such as the severity of tricuspid regurgitation, its underlying causes, and the presence and extent of associated abnormalities, encompassing pulmonary hypertension, heart failure, and other valve conditions. The approach to addressing severe tricuspid regurgitation encompasses medical therapy, guidance on issues related to pregnancy and physical activity, contemplation of tricuspid valve surgery, and assessment and management of the root cause of the condition.

For individuals experiencing tricuspid regurgitation stemming from left-sided heart failure, it is imperative to implement effective control measures for fluid overload. Diuretics, particularly loop diuretics, are frequently recommended in such cases. Additionally, a restricted salt intake is advised.

Elevating the head of the bed can be beneficial, improving the symptoms of dyspnea. In the management of these patients, the use of digitalis, angiotensin-converting enzyme inhibitors, potassium-sparing diuretics, and anticoagulants is warranted. If atrial fibrillation is present, the initiation of antiarrhythmic medications can be considered to regulate heart rhythm.

by Stage

by Modality

Chemotherapy

Radiation Therapy

Surgical Interventions

In cases of tricuspid valve endocarditis, the advisable course of action involves excising the tricuspid valve without an immediate replacement. This excision serves to eliminate the infected valve, allowing for continued antibiotic treatment.

If right heart failure symptoms persist despite medical management and the infection is under control, consideration may be given to the insertion of an artificial valve.

Asymptomatic tricuspid regurgitation typically does not necessitate surgical intervention in individuals with Ebstein anomaly. However, symptomatic patients may require treatment, which may involve either repair or replacement of the tricuspid valve.

Hormone Therapy

Immunotherapy

Hyperthermia

Photodynamic Therapy

Stem Cell Transplant

Targeted Therapy

Palliative Care

Medication

Media Gallary

References

Tricuspid regurgitation

Updated : June 20, 2024

Mail Whatsapp PDF Image



Tricuspid regurgitation is a heart valve disorder characterized by the backflow of blood from the right ventricle to the right atrium during the contraction of the heart.

The tricuspid valve is located between the right atrium and the right ventricle and typically prevents the backward flow of blood. Tricuspid regurgitation is a relatively common anomaly, and structural alterations to any component of the tricuspid valve apparatus can lead to its onset.

Tricuspid regurgitation has an incidence of 0.9% in the United States, and studies indicate that there are no discernible gender or racial variations in its occurrence. The manifestation of tricuspid regurgitation varies across age groups, contingent on its underlying causes.

Conditions such as Ebstein anomaly may be identified at birth or during early childhood. At the same time, rheumatic valvular disease emerges as the predominant form of tricuspid regurgitation in individuals aged 15 years and older.

The structural inadequacy of the tricuspid valve apparatus can stem from either primary abnormalities within the valve itself or secondary issues arising from myocardial dysfunction or dilation. Tricuspid regurgitation is characterized by the retrograde flow of blood from the right ventricle into the right atrium during systole.

In cases of mild to moderate tricuspid regurgitation, the right atrium’s compliant nature mitigates major hemodynamic consequences. However, in instances of severe regurgitation, right ventricular volume overload occurs, ultimately leading to right-sided congestive heart failure. This clinical presentation is marked by ascites, peripheral edema, and hepatic congestion.

The severity of tricuspid regurgitation intensifies during inspiration. The expansion of the right ventricle during inspiration leads to a corresponding enlargement of the tricuspid valve annulus, thereby improving the effective regurgitant orifice area.

Primary Tricuspid Regurgitation

  • Rheumatic valve disease
  • Infective Endocarditis
  • Ebstein anomaly
  • Carcinoid syndrome
  • Marfan syndrome
  • Ehlers-Danlos
  • Marantic endocarditis
  • Trauma to chest wall

Secondary Tricuspid Regurgitation

  • Hyperthyroidism
  • Mitral stenosis or regurgitation
  • Left-sided heart failure
  • Pulmonary embolism
  • Pulmonary hypertension

Patients typically exhibit clinical manifestations indicative of right-sided heart failure, including ascites, painful hepatosplenomegaly, and peripheral edema. In severe cases, the presence of distended and pulsatile jugular veins results in noticeable pulsations in the neck. Additionally, exercise intolerance may be apparent.

The clinical presentation may also reflect the co-morbidities responsible for tricuspid regurgitation. For instance, if pulmonary hypertension is the cause, patients may experience symptoms such as shortness of breath, weakness, and exercise intolerance. In cases linked to infective endocarditis, a common precursor of tricuspid regurgitation, patients may present with episodes of fever.

Jugular Venous Distension (JVD): Elevated right atrial pressure can lead to visible jugular venous distension. The presence of a prominent V wave may be observed, especially during inspiration (Kussmaul’s sign).

Systolic Murmur: A pansystolic murmur, often high-pitched, can be heard. It is the loudest in the fourth intercostal space in the parasternal region.

Ascites: Fluid accumulation in the abdominal cavity may lead to the clinical finding of ascites.

Atrial Fibrillation: Irregular heart rhythm, such as atrial fibrillation, may be present due to the atrial enlargement associated with chronic tricuspid regurgitation.

Right Ventricular Heave: Palpation of the chest may reveal a right ventricular heave, indicating the enlargement of the right ventricle.

S3 Gallop: The presence of an S3 gallop sound, indicative of a dilated right ventricle, may be noted during cardiac auscultation.

S4 Gallop: The presence of an S4 gallop sound, which occurs late in diastole and is associated with atrial contraction, may be detected. Its intensity tends to increase during inspiration.

Ascites

Atrial fibrillation

Biliary disease

Carcinoid tumor

Cardiogenic shock

Dilated cardiomyopathy

Eisenmenger syndrome

Ebstein anomaly

The choice of treatment is contingent upon factors such as the severity of tricuspid regurgitation, its underlying causes, and the presence and extent of associated abnormalities, encompassing pulmonary hypertension, heart failure, and other valve conditions. The approach to addressing severe tricuspid regurgitation encompasses medical therapy, guidance on issues related to pregnancy and physical activity, contemplation of tricuspid valve surgery, and assessment and management of the root cause of the condition.

For individuals experiencing tricuspid regurgitation stemming from left-sided heart failure, it is imperative to implement effective control measures for fluid overload. Diuretics, particularly loop diuretics, are frequently recommended in such cases. Additionally, a restricted salt intake is advised.

Elevating the head of the bed can be beneficial, improving the symptoms of dyspnea. In the management of these patients, the use of digitalis, angiotensin-converting enzyme inhibitors, potassium-sparing diuretics, and anticoagulants is warranted. If atrial fibrillation is present, the initiation of antiarrhythmic medications can be considered to regulate heart rhythm.

In cases of tricuspid valve endocarditis, the advisable course of action involves excising the tricuspid valve without an immediate replacement. This excision serves to eliminate the infected valve, allowing for continued antibiotic treatment.

If right heart failure symptoms persist despite medical management and the infection is under control, consideration may be given to the insertion of an artificial valve.

Asymptomatic tricuspid regurgitation typically does not necessitate surgical intervention in individuals with Ebstein anomaly. However, symptomatic patients may require treatment, which may involve either repair or replacement of the tricuspid valve.

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