What question did this study set out to answer?

To evaluate the anatomical and histological architecture of normal human pulmonary veins to better inform radiofrequency ablation procedures for paroxysmal atrial fibrillation.

September 1, 2001HeartOpen Access

Architecture of the pulmonary veins: relevance to radiofrequency ablation

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Population

20 structurally normal heart specimens (65 pulmonary veins examined histologically)

Design

Preclinical

Authors

SHSiew Yen HoAdult Congenital Heart Disease

Discussion

Member takes

Implication

Variable pulmonary vein sleeves and fibrosis may influence AF ablation durability; leaves open tailored lesion strategies for prospective validation.

Key Points

To evaluate the anatomical and histological architecture of normal human pulmonary veins to better inform radiofrequency ablation procedures for paroxysmal atrial fibrillation.
Gross anatomical evaluations were performed on 20 structurally normal human heart specimens.
Histological sections were prepared and analyzed from 65 pulmonary veins obtained from individuals aged 30 to 72 years.
Myocardial sleeves were longest in superior pulmonary veins, thickest at the venoatrial junction in left superior veins, and thicker along inferior walls compared to superior walls.
Myocyte bundles displayed circular, spiral, longitudinal, and oblique orientations forming mesh-like networks, with fibrotic changes ranging from 5% to 70% in 17 veins.

Structured PICO

Population

20 structurally normal heart specimens (65 pulmonary veins examined histologically)

Intervention

Gross and histological examination

Outcome

Anatomical and histological characteristics of normal pulmonary veins (myocardial sleeve length, thickness, orientation, and fibrosis)surrogate

The highly variable myocardial architecture and fibrosis in normal pulmonary veins may contribute to non-uniform anisotropic properties, which is relevant for optimizing radiofrequency ablation strategies in atrial fibrillation.

Cite This Study

Siew Yen Ho (2001) studied this question.

synapsesocial.com/papers/6a7ee204366dd125a6c307b2 https://doi.org/10.1136/heart.86.3.265

Topics

AF ablation outcomes

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Implication

Variable pulmonary vein sleeves and fibrosis may influence AF ablation durability; leaves open tailored lesion strategies for prospective validation.

Architecture of the pulmonary veins: relevance to radiofrequency ablation

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Topics

Architecture of the pulmonary veins: relevance to radiofrequency ablation

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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Topics

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