Cleveland Clinic Study Links Anemia to TAVI Risks

New research identifies higher mortality and hospitalization rates for heart patients with pre-existing anemia and hemoglobin decline.

Updated on Oct. 30, 2026 in Heart Disease

Isometric editorial illustration of a metallic heart valve sculpture on a plinth, representing medical research on procedural health risks. — A Cleveland Clinic study of 1,666 TAVI patients found that pre-existing anemia and significant hemoglobin drops after heart surgery increase long-term mortality risks. AI Illustration. Upload story photo >

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Would you support requiring more extensive pre-procedure screenings to identify hidden health issues before surgery?

A study of 1,666 patients who underwent TAVI at the Cleveland Clinic between 2016 and 2020 finds that baseline anemia and large periprocedural hemoglobin drops significantly impact long-term outcomes. These factors are associated with elevated risks for both mortality and heart failure hospitalization.

Why it matters

Understanding how anemia affects recovery helps clinicians better manage high-risk patients undergoing valve replacement procedures. Identifying these markers early may allow for improved pre-procedural interventions to enhance long-term health outcomes.

Researchers categorized anemia as hemoglobin below 13 g/dL for men and 12 g/dL for women, with 75% to 90% of cases linked to iron deficiency. High-risk patients experienced a 24.0% heart failure hospitalization rate over three years.

The players

Cleveland Clinic

This major academic medical center in Ohio is recognized globally for its advanced cardiovascular care and extensive research initiatives.

The details

Researchers tracked outcomes for 3 years post-TAVI, categorizing patients into four groups based on their hemoglobin levels and changes during the procedure. A large hemoglobin decline was defined as a drop of at least 2 g/dL.

The patient data was collected from 2016 to 2020.
Outcomes were tracked for 3 years post-TAVI.
The manuscript appears in the October 2026 issue of Structural Heart.

Health Landscape

This study follows the precedent of long-term retrospective tracking established by the Cleveland Clinic cardiovascular outcomes research program. It underscores a growing shift toward managing patient blood health as a critical component of cardiovascular surgical success.

Patients preparing for TAVI procedures should discuss their hemoglobin levels and potential iron deficiency with their cardiologists. Addressing these factors before the procedure may help reduce the risk of long-term heart failure or mortality.

The takeaway

Patients scheduled for TAVI should work with their medical team to optimize hemoglobin levels before surgery to improve their long-term prognosis. Managing iron deficiency effectively may play a crucial role in reducing post-operative complications and hospitalization risks.