Differential Diagnosis for Moderate TR and Moderate PAH on Echo
Single Most Likely Diagnosis
- Left Ventricular Dysfunction: This is the most likely diagnosis as left ventricular dysfunction can lead to increased pressure in the left atrium, causing pulmonary hypertension (PAH) and subsequent right ventricular dysfunction, which can result in moderate tricuspid regurgitation (TR).
Other Likely Diagnoses
- Chronic Thromboembolic Disease: Recurrent pulmonary emboli can lead to chronic thromboembolic pulmonary hypertension, causing PAH and subsequent TR.
- Idiopathic Pulmonary Arterial Hypertension: A condition characterized by elevated pulmonary artery pressure without an identifiable cause, which can lead to right ventricular dysfunction and TR.
- Sleep Apnea: Severe sleep apnea can lead to chronic hypoxia, causing pulmonary vasoconstriction and subsequent PAH and TR.
Do Not Miss Diagnoses
- Pulmonary Embolism: A large pulmonary embolism can cause acute PAH and TR, and is a life-threatening condition that requires immediate attention.
- Cardiac Sarcoidosis: An inflammatory condition that can affect the heart, causing scarring and dysfunction of the right ventricle, leading to PAH and TR.
- Cor Pulmonale: Right-sided heart failure due to chronic lung disease, which can cause PAH and TR.
Rare Diagnoses
- Eisenmenger Syndrome: A congenital heart defect that causes reversed or bidirectional shunting of blood between the left and right sides of the heart, leading to PAH and TR.
- Pulmonary Venous Occlusive Disease: A rare condition characterized by blockage of the pulmonary veins, causing PAH and TR.
- Lymphangiomatosis: A rare condition characterized by abnormal growth of lymphatic vessels, which can cause PAH and TR.