What question did this study set out to answer?

To evaluate pulmonary vein ostial anatomy and dimensions using 3D magnetic resonance angiography reconstructions prior to catheter ablation in patients with atrial fibrillation.

October 1, 2005Pacing and Clinical Electrophysiology

Magnetic Resonance Angiography of Pulmonary Veins: Implications for Catheter Ablation of Atrial Fibrillation

Q: What is the clinical evidence from this study?

Study design: Observational. Population: Atrial fibrillation (n=40). Intervention: Contrast-enhanced magnetic resonance angiography (MRA) with 3D reconstructions vs. 2D multiplanar reconstructions. Primary outcome: Pulmonary vein ostial anatomy and diameters.

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Key result

Contrast-enhanced MRA with 3D reconstructions identified a common left-sided antrum in 75% of patients and yielded slightly larger pulmonary vein ostial diameters than 2D measurements.

Why the study?

Does contrast-enhanced MRA with 3D reconstructions improve the assessment of pulmonary vein anatomy compared to 2D multiplanar reconstructions in patients with atrial fibrillation scheduled for ablation?

Population

40 patients with paroxysmal or persistent atrial fibrillation, mean age 53 +/- 9 years, scheduled for…

Comparison

Three-dimensional reconstructions of… vs Two-dimensional (2D) multiplanar reconstructions

Design

Cross-sectional

Authors

HMH. MlcochovaInstitute of Clinical and Experimental Medicine JTJaroslav TintěraInstitute of Clinical and Experimental Medicine VPVáclav PorodInstitute of Clinical and Experimental Medicine

Discussion

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Implication

May support 3D MRA for PV assessment in AF ablation planning; extends 2D data but leaves open impact on outcomes.

Key Points

To evaluate pulmonary vein ostial anatomy and dimensions using 3D magnetic resonance angiography reconstructions prior to catheter ablation in patients with atrial fibrillation.
Assessed 40 patients (mean age 53 ± 9 years; 30 with paroxysmal AF, 10 with persistent AF) scheduled for circumferential ablation around pulmonary vein ostia.
Performed contrast-enhanced magnetic resonance angiography and compared multiplanar 2D reconstructions with 3D reconstructions to evaluate vein anatomy and diameters.
A common left-sided antrum appeared in 75% of patients (21 short and 9 long trunks), while 23% had additional right-sided pulmonary veins.
Pulmonary vein ostia presented an oblong geometry, with mean long- and short-axis diameters of 17.0 ± 4.3 mm vs 10.5 ± 2.5 mm on 2D imaging and 20.8 ± 7.6 mm vs 12.9 ± 3.3 mm on 3D reconstruction.
Measurements obtained from 2D and 3D reconstructions correlated significantly, though 3D imaging consistently provided slightly larger diameter measurements.

Study Design

Type

Observational (n=40)

Structured PICO

Population

40 patients with paroxysmal (n=30) or persistent (n=10) atrial fibrillation, mean age 53 +/- 9 years, scheduled for circumferential ablation around pulmonary vein ostia.

Intervention

Three-dimensional (3D) reconstructions of contrast-enhanced magnetic resonance angiography (MRA) of the pulmonary veins

Comparator

Two-dimensional (2D) multiplanar reconstructions

Outcome

Pulmonary vein ostial anatomy and diameterssurrogate

MRA with 3D reconstructions provides detailed anatomical information and slightly larger diameter measurements of pulmonary veins compared to 2D imaging, which may aid in selecting appropriate tools for AF ablation.

Cite This Study

Mlcochova et al. (2005) conducted an observational in Atrial fibrillation (n=40). Contrast-enhanced magnetic resonance angiography (MRA) with 3D reconstructions vs. 2D multiplanar reconstructions was evaluated on Pulmonary vein ostial anatomy and diameters. Contrast-enhanced MRA with 3D reconstructions identified a common left-sided antrum in 75% of patients and yielded slightly larger pulmonary vein ostial diameters than 2D measurements.

synapsesocial.com/papers/6a0f808d9e54838161fccc8b https://doi.org/10.1111/j.1540-8159.2005.00228.x

Topics

Atrial fibrillation Persistent AF management AF ablation outcomes

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Magnetic Resonance Angiography of Pulmonary Veins: Implications for Catheter Ablation of Atrial Fibrillation

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Cite This Study

Topics

Magnetic Resonance Angiography of Pulmonary Veins: Implications for Catheter Ablation of Atrial Fibrillation

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Cite This Study

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Topics

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