What question did this study set out to answer?

To evaluate the safety and lesion characteristics of high-intensity focused ultrasound applications delivered directly over the left anterior descending coronary artery in an open-chest swine model.

June 15, 2011Journal of Cardiovascular Electrophysiology

Safety and Efficacy of High-Intensity Focused Ultrasound Atop Coronary Arteries During Epicardial Catheter Ablation

View Full Paper

Ask AI

Bookmark

Why the study?

Does high-intensity focused ultrasound (HIFU) delivered over the LAD artery cause coronary arterial injury in a swine model?

Key Points

To evaluate the safety and lesion characteristics of high-intensity focused ultrasound applications delivered directly over the left anterior descending coronary artery in an open-chest swine model.
Conducted median sternotomy in 10 swine with a prototype high-intensity focused ultrasound (HIFU) probe placed directly atop the left anterior descending (LAD) artery.
Delivered 43 ablation applications along the LAD (60 seconds at 6 watts) across follow-up durations of 2 weeks (n=3), 4 weeks (n=3), and 8 weeks (n=4) before sacrifice and histological injury scoring (scale 0–4).
Myocardial lesion area measured 54.5 ± 18.0 mm² at 2 weeks and 56.9 ± 20.6 mm² at 8 weeks, while lesion depth increased from 13.2 ± 2.5 mm to 15.5 ± 3.4 mm.
Mean LAD arterial injury scores progressed over time (0.8 ± 0.3 at 2 weeks, 1.5 ± 0.9 at 4 weeks, and 2.0 ± 0.7 at 8 weeks), with 89% of sections exhibiting injury by 8 weeks and 1 animal developing distal LAD occlusion.

Structured PICO

Does high-intensity focused ultrasound (HIFU) delivered over the LAD artery cause coronary arterial injury in a swine model?

Population

10 swine in an open-chest model undergoing median sternotomy

Intervention

High-intensity focused ultrasound (HIFU) therapies (60-seconds/6 watt) delivered directly over the left anterior descending (LAD) artery

Outcome

Safety of HIFU applications, assessed by lesion area, depth, and arterial injury score (0-4) based on percent circumferential involvement of arteriessafety

HIFU can create deep ventricular lesions but causes progressive coronary arterial damage over time when applied directly over the LAD, warranting caution and further evaluation.

Discussion

No takes yet. Share an insight, caveat, or question.

Implication

HIFU over the LAD causes progressive swine arterial injury; leaves open safe parameters for clinical ventricular ablation.

Cite This Study

Koruth et al. (2011) studied this question.

synapsesocial.com/papers/6a7cea160487f0b2ef9291f7 https://doi.org/10.1111/j.1540-8167.2011.02084.x

Topics

AF ablation outcomes

View Full Paper

Ask AI

Bookmark

Safety and Efficacy of High-Intensity Focused Ultrasound Atop Coronary Arteries During Epicardial Catheter Ablation

Key Points

Structured PICO

Discussion

Implication

Cite This Study

Topics

Safety and Efficacy of High-Intensity Focused Ultrasound Atop Coronary Arteries During Epicardial Catheter Ablation

Key Points

Structured PICO

Discussion

Implication

Cite This Study

Also Consider

Topics

Also Consider