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Published on: August 8, 2025
The Clinical and Economic Consequences of Delayed Transcatheter Aortic Valve Replacement
Sreekanth Vemulapalli1, Mark Russo2, Shannon Murphy3
1Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA.
Insights
Delayed transcatheter aortic valve replacement (TAVR) significantly increases mortality risk by 50% and incurs over $36,000 in additional healthcare costs. Timely TAVR is crucial for better patient outcomes and reduced economic burden.
Area of Science:
- Cardiology
- Health Economics
- Medical Interventions
Background:
- Aortic stenosis (AS) often requires aortic valve replacement, but access delays are common.
- The clinical and economic impact of delayed transcatheter aortic valve replacement (TAVR) for AS is not well-defined.
Purpose of the Study:
- To investigate the clinical and economic consequences of delayed TAVR in patients with significant AS.
- To compare outcomes between timely and delayed TAVR procedures.
Main Methods:
- Analysis of 4069 patients undergoing TAVR between July 2019 and June 2023.
- Categorization into timely (≤90 days) and delayed (>90 days or urgent/emergent) TAVR groups.
- Evaluation of 3-year clinical outcomes (mortality, heart failure hospitalizations, stroke) and economic outcomes (healthcare costs, hospitalizations) using multivariable models.
Main Results:
- Delayed TAVR patients (49.6%) had higher frailty but similar comorbidities compared to timely TAVR patients (50.4%).
- At 3 years, delayed TAVR was linked to significantly higher composite outcomes (50.1% vs. 36.8%), mortality (19.5% vs. 13.7%), and heart failure hospitalizations (38.4% vs. 26.5%).
- Delayed TAVR resulted in $36,740 higher healthcare costs per patient, mainly due to increased hospitalizations.
Conclusions:
- Delayed TAVR is associated with substantially worse clinical outcomes, including a 50% increase in mortality risk.
- Significant economic consequences arise from delayed TAVR, with excess costs exceeding $36,000 over three years.
- Findings underscore the need for timely TAVR interventions and system-level improvements to minimize wait times.
Background:
Delays in access to aortic valve replacement, the recommended treatment for aortic stenosis (AS), is common; however, the impact of this delay is not clearly known. This study aims to examine the clinical and economic consequences of delayed transcatheter aortic valve replacement (TAVR) in patients with clinically significant AS.
Methods:
We analyzed 4069 patients with clinically significant AS who underwent TAVR between July 2019 and June 2023 using the Optum Market Clarity database. Patients were categorized as timely TAVR (≤90 days from diagnosis) or delayed TAVR (>90 days or urgent/emergent procedure). Clinical outcomes included all-cause mortality, heart failure hospitalizations, stroke, and composite endpoints over 3 years. Economic outcomes included total health care costs and hospitalization utilization. Multivariable Cox proportional hazards and generalized linear models were used for analysis.
Results:
Of 4069 patients, 2051 (50.4%) received timely TAVR and 2018 (49.6%) received delayed TAVR. Delayed patients had higher frailty scores (10.9 vs. 8.5; p < 0.01) but similar comorbidity burden. At 3 years, delayed TAVR was associated with significantly higher composite outcomes (50.1 vs. 36.8%; hazard ratio (HR): 1.52; p < 0.01), mortality (19.5 vs. 13.7%; HR: 1.50; p < 0.01), and heart failure hospitalizations (38.4 vs. 26.5%; HR: 1.59; p < 0.01). Disabling stroke was not statistically significant (10.0 vs. 7.9%; HR: 1.25; p = 0.0558). Delayed patients incurred $36,740 higher health care costs over 3 years ($182,470 vs. $145,730; p < 0.01), driven primarily by increased hospitalizations ($22,127 difference). Results remained significant when restricted to elective procedures only.
Conclusions:
Delayed TAVR is associated with substantial clinical and economic consequences, including a 50% higher mortality risk and $36,740 in excess costs over 3 years. These findings support the importance of timely intervention and health care system investments to reduce TAVR wait times.
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