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How is chronic thromboembolic pulmonary hypertension (CTEPH) diagnosed?

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Tests that can help diagnose CTEPH include:

•Ventilation/perfusion scan (V/Q scan). This is the go-to test that doctors use as a screen for the condition. Doctors inject radioactive protein into your bloodstream so they can track how blood flows through your lungs.

•CT scan. A computed tomography scan looks for blood clots. You get an injection of dye through an IV to help doctors see them.

•Echocardiogram. Doctors take a sonogram of your heart to take pressure readings from its right side and look at how well it's squeezing and relaxing.

•Right-heart catheterization. This procedure involves a small tube called a catheter that doctors put into a vein in your groin, neck, or wrist. The doctor guides the tube toward the right side of your heart and then into your lung arteries. They take pressure readings as it goes.

•Pulmonary angiogram. A pulmonary angiogram starts the same as a right-heart catheterization. Once the tube is in the lung arteries, the doctor injects dye into them and takes X-rays to see where the clots are.

SOURCES:

American Lung Association: “Pulmonary Arterial Hypertension (PAH).”

Cleveland Clinic: "Chronic Thromboembolic Pulmonary Hypertension (CTEPH),” “Pulmonary Thromboendarterectomy.”

UpToDate: "Clinical manifestations and diagnosis of chronic thromboembolic pulmonary hypertension."

Harvard Health Publishing: “Ventilation-Perfusion Scan or V-Q Scan”

Mayo Clinic: "Pulmonary hypertension."

Pulmonary Hypertension Association: "CTEPH."

European Respiratory Review : “Medical management of chronic thromboembolic pulmonary hypertension.”

Reviewed by Paul Boyce on April 1, 2020

SOURCES:

American Lung Association: “Pulmonary Arterial Hypertension (PAH).”

Cleveland Clinic: "Chronic Thromboembolic Pulmonary Hypertension (CTEPH),” “Pulmonary Thromboendarterectomy.”

UpToDate: "Clinical manifestations and diagnosis of chronic thromboembolic pulmonary hypertension."

Harvard Health Publishing: “Ventilation-Perfusion Scan or V-Q Scan”

Mayo Clinic: "Pulmonary hypertension."

Pulmonary Hypertension Association: "CTEPH."

European Respiratory Review : “Medical management of chronic thromboembolic pulmonary hypertension.”

Reviewed by Paul Boyce on April 1, 2020

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