What does this research mean for the field?

The spread of electrical excitation on the ventricular surface is 'mosaic-like' and driven by numerous (25 to 37) breakthrough points, contradicting the traditional model of radial spread from only two breakthrough points. Novelty: ClaimNovelty.CONTRADICTORY. Consensus alignment: ConsensusAlignment.CHALLENGES_CONSENSUS.

What question did this study set out to answer?

To investigate the normal spread of excitation on the ventricular surface in dogs and identify new features of epicardial potential fields.

June 1, 1983Circulation ResearchOpen Access

Potential fields on the ventricular surface of the exposed dog heart during normal excitation.

View Full Paper

Ask AI

Bookmark

Population

Open-chest dogs

Design

Preclinical

Authors

GAG ArisiUniversity of Parma EMEmilio MacchiUniversity of Parma SBS BaruffiUniversity of Parma

Discussion

Member takes

Implication

Challenges traditional two-point radial spread model; leaves open how mosaic patterns should inform clinical mapping and simulations.

Key Points

To investigate the normal spread of excitation on the ventricular surface in dogs and identify new features of epicardial potential fields.
Recorded unipolar electrograms from 1124 electrodes on open-chest dogs.
Electrograms processed and displayed as epicardial equipotential maps at 1-msec intervals.
Isochrone maps drawn to illustrate wavefront behavior.
Identified 15-24 breakthrough points on the anterior and 10-13 on the posterior part of the ventricle.
Described a 'mosaic-like' spread of excitation with wavefronts moving in multiple directions.
Noted that positive potential peaks traveled along directions related to myocardial fiber orientation.

Structured PICO

Population

Open-chest dogs

Intervention

High-resolution epicardial mapping using an array of 1124 electrodes spaced 2 mm apart

Outcome

Epicardial potential fields and spread of excitationsurrogate

High-resolution epicardial mapping in dogs demonstrates that normal ventricular excitation spreads in a complex, mosaic-like pattern from numerous breakthrough points rather than radially from just two.

Cite This Study

Arisi et al. (1983) studied this question.

synapsesocial.com/papers/6a1bc259ea84844e355ee6ec https://doi.org/10.1161/01.res.52.6.706

View Full Paper

Ask AI

Bookmark

Potential fields on the ventricular surface of the exposed dog heart during normal excitation.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Potential fields on the ventricular surface of the exposed dog heart during normal excitation.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider