Percutaneous Mechanical Aspiration for Right-Sided Endocarditis: A Step Forward While Awaiting Randomized Data

Q: What is the clinical evidence from this study?

Study design: Editorial. Population: Right-sided infective endocarditis (n=238). Intervention: Continuous flow (CF) percutaneous aspiration systems vs. Noncontinuous flow (NCF) percutaneous aspiration systems. Primary outcome: Primary safety endpoint (a composite of in-hospital mortality, new pulmonary embolism, urgent surgical intervention, or blood loss >150 mL).

Q: What does this research mean for the field?

Continuous flow percutaneous aspiration systems are associated with a significantly lower rate of composite adverse safety outcomes compared to noncontinuous flow systems in right-sided infective endocarditis, primarily driven by lower rates of acute blood loss. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

Pedro A. Engel Gonzalez; Siavash Saadat

doi:10.1016/j.jscai.2026.105569

August 4, 2026Journal of the Society for Cardiovascular Angiography & InterventionsOpen Access

Percutaneous Mechanical Aspiration for Right-Sided Endocarditis: A Step Forward While Awaiting Randomized Data

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Key result

Continuous flow percutaneous aspiration systems were associated with a significantly lower rate of a composite safety endpoint compared to noncontinuous flow systems, primarily driven by lower rates of acute blood loss.

Why the study?

Does continuous flow percutaneous mechanical aspiration improve safety compared to noncontinuous flow systems in patients with right-sided infective endocarditis?

Key Points

Review the clinical utility, safety, and procedural efficacy of percutaneous mechanical aspiration systems for debulking right-sided infective endocarditis vegetations in patients facing prohibitive surgical risk.
Assessed data from the multicenter CLEAR-IE registry evaluating percutaneous mechanical aspiration across 19 US tertiary centers.
Compared outcomes using a 3:1 propensity-score matching algorithm between continuous flow (CF, n=202) and noncontinuous flow (NCF, n=36) suction devices.
Tracked procedural success (≥70% reduction in vegetation size or residual vegetation ≤10 mm) and a composite safety endpoint (in-hospital mortality, new pulmonary embolism, urgent surgery, or blood loss >150 mL).
Procedural success was similar between cohorts, but the primary composite safety endpoint was significantly lower in the CF cohort, primarily driven by higher blood loss and transfusion requirements in the NCF cohort.
In-hospital mortality ranged from 5.9% to 14.1% and 6-week mortality ranged from 9.4% to 20.6%, with no significant differences observed between the CF and NCF cohorts.
Worsening tricuspid regurgitation was nontrivial in both groups, ranging from 14.7% to 22.9% without a significant difference between device types.

Structured PICO

Does continuous flow percutaneous mechanical aspiration improve safety compared to noncontinuous flow systems in patients with right-sided infective endocarditis?

P

Population

238 patients with right-sided infective endocarditis undergoing percutaneous mechanical aspiration across 19 US tertiary centers.

E

Exposure

Continuous flow (CF) percutaneous mechanical aspiration systems (e.g., AngioVac).

C

Comparator

Noncontinuous flow (NCF) systems (e.g., Penumbra Lightning, AlphaVac).

O

Outcome

Primary safety endpoint (composite of in-hospital mortality, new pulmonary embolism, urgent surgical intervention, or blood loss >150 mL) and procedural success (≥70% reduction in vegetation size or a residual vegetation ≤10 mm on intraprocedural echocardiography).safety

Limitations

Profound sample size imbalance between the two groups (36 NCF vs 202 CF patients)
High probability of residual confounding variables despite propensity-score matching
No objective or standardized protocol for device selection, leading to potential operator selection bias
Absence of standardized procedural technique and systematic postprocedural imaging
Lack of centralized outcomes adjudication (endpoints were self-reported by sites)
Retrospective observational registry design cannot establish causality or definitive best practices without randomized data
Profound sample size imbalance between the 2 groups (36 NCF vs 202 CF)
High probability of residual confounding despite 3:1 propensity-score matching
No objective or standardized protocol for device selection
Absence of standardized protocol for procedural technique and systematic postprocedural imaging
No centralized outcomes adjudication (endpoints were self-reported)

Implication

Continuous flow mechanical aspiration systems may offer a safer bleeding profile than noncontinuous flow systems for right-sided endocarditis, though randomized controlled trials against standard medical therapy are urgently needed.

Abstract

Traditionally, the treatment for infective endocarditis (IE) has consisted of prompt diagnosis, appropriate antibiotic therapy, and early surgical intervention for patients presenting with valve dysfunction resulting in heart failure, persistent infection, abscess, heart block, highly resistant organisms, or recurrent emboli with persistent vegetations. This group of indications comprises the only class I recommendations for intervention in the latest iteration of the American Heart Association/American College of Cardiology Valvular Heart Disease guidelines.

Discussion

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Cite This Study

Gonzalez et al. (2026) conducted an editorial in Right-sided infective endocarditis (n=238). Continuous flow (CF) percutaneous aspiration systems vs. Noncontinuous flow (NCF) percutaneous aspiration systems was evaluated on Primary safety endpoint (a composite of in-hospital mortality, new pulmonary embolism, urgent surgical intervention, or blood loss >150 mL). Continuous flow percutaneous aspiration systems were associated with a significantly lower rate of a composite safety endpoint compared to noncontinuous flow systems, primarily driven by lower rates of acute blood loss.

synapsesocial.com/papers/6ad0fc8615427f6a84040215 https://doi.org/10.1016/j.jscai.2026.105569

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Percutaneous Mechanical Aspiration for Right-Sided Endocarditis: A Step Forward While Awaiting Randomized Data

Key Points

Structured PICO

Limitations

Implication

Abstract

Discussion

Cite This Study

Percutaneous Mechanical Aspiration for Right-Sided Endocarditis: A Step Forward While Awaiting Randomized Data

Key Points

Structured PICO

Limitations

Implication

Abstract

Discussion

Cite This Study

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