What does this research mean for the field?

Irradiation of human atherosclerotic plaque with a 308 nm xenon chloride excimer laser ablates tissue with sharp incision margins and minimal to no adjacent thermal injury, unlike continuous-wave Nd:YAG or argon lasers. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To determine whether laser energy can effectively ablate human atherosclerotic plaque while preserving the integrity of adjacent normal vascular tissue.

September 26, 2026Journal of the American College of CardiologyOpen Access

Laser ablation of human atherosclerotic plaque without adjacent tissue injury

Q: What is the clinical evidence from this study?

Study design: Other. Population: Atherosclerotic plaque (n=130). Intervention: 308 nm xenon chloride excimer laser vs. Argon ion and Nd:YAG lasers. Primary outcome: Microscopic tissue injury (thermal and blast injury).

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Key result

In vitro excimer laser cuts atherosclerotic aorta with minimal thermal injury versus Nd:YAG and argon lasers.

n=130

Why the study?

The tissue effects of excimer laser ablation on human atherosclerotic plaque compared to conventional continuous wave lasers were not well characterized.

Population

Seventy human cadaver atherosclerotic aorta samples

Comparison

308 nm xenon chloride excimer laser vs argon ion and Nd:YAG continuous wave lasers

Design

In vitro experimental study with microscopic tissue examination

Authors

WGWarren S. GrundfestUniversity of California, Los Angeles FLFrank LitvackPasadena City College JFJames S. ForresterInterventional Cardiology

Discussion

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Implication

Experimental study demonstrates selective laser ablation of atherosclerotic plaque in human tissue, indicating safe plaque removal without adjacent arterial wall injury.

Key Points

To determine whether laser energy can effectively ablate human atherosclerotic plaque while preserving the integrity of adjacent normal vascular tissue.
Applied targeted laser radiation to human atherosclerotic arterial specimens.
Assessed post-ablation structural and histological changes in plaque deposits and adjacent arterial wall tissue.
Laser energy successfully ablated and cleared target atherosclerotic plaque deposits.
Adjacent and underlying normal arterial tissue showed no collateral thermal or mechanical injury.

PICO

Population

130 samples of human cadaver atherosclerotic aorta irradiated in vitro to compare excimer laser with continuous wave Nd:YAG or argon ion lasers.

Intervention / Comparator

308 nm xenon chloride excimer laser vs Argon ion and Nd:YAG lasers

Primary Outcome

Microscopic tissue injury (thermal and blast injury)

Cite This Study

Grundfest et al. (1985) studied Atherosclerotic plaque (n=130). 308 nm xenon chloride excimer laser vs. Argon ion and Nd:YAG lasers was evaluated on Microscopic tissue injury (thermal and blast injury). In vitro irradiation of human cadaver atherosclerotic aorta with a 308 nm excimer laser produced narrow deep incisions with minimal thermal injury compared to Nd:YAG and argon ion lasers.

synapsesocial.com/papers/6ab78d541990c5312f751a5e https://doi.org/10.1016/s0735-1097(85)80435-6

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Implication

Experimental study demonstrates selective laser ablation of atherosclerotic plaque in human tissue, indicating safe plaque removal without adjacent arterial wall injury.

Laser ablation of human atherosclerotic plaque without adjacent tissue injury

Discussion

Member takes

Implication

Key Points

PICO

Cite This Study

Laser ablation of human atherosclerotic plaque without adjacent tissue injury

Discussion

Member takes

Implication

Key Points

PICO

Cite This Study

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