What does this research mean for the field?

In congenital heart block, the conduction block typically occurs proximal to or within the His bundle, whereas in surgical heart block it occurs distal to the His bundle, and this anatomical location partially correlates with the severity of bradycardia and symptoms. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To investigate the sites of congenital and surgical heart block using His bundle electrocardiography.

November 1, 1971Circulation

Sites of Congenital and Surgical Heart Block as Defined by His Bundle Electrocardiography

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Why the study?

Does His bundle electrocardiography define the site of block in patients with congenital and surgical heart block?

Population

9 patients

Design

Case_series

Authors

KRKenneth M. RosenBoston University AMAshwin MehtaJaslok Hospital SRShahbudin H. RahimtoolaStructural Heart Disease

Discussion

Member takes

Implication

His bundle ECG localizes block sites in congenital/surgical CHB; hypothesis-generating for symptom correlation, requiring larger validation.

Key Points

To investigate the sites of congenital and surgical heart block using His bundle electrocardiography.
Obtained catheter recordings of His bundle electrograms in seven patients with congenital heart block and two with surgical heart block.
Assessed H-V intervals and QRS patterns to determine block locations in each patient.
Evaluated correlation between block location, bradycardia severity, and clinical symptoms.
In congenital heart block, six patients had block proximal to H and one had block in the His bundle with split H potentials.
Two patients with congenital heart block had short H-V intervals (25 and 30 msec) indicating potential abnormal conduction.
For surgical heart block, block was distal to H with P-H intervals of 125 msec and 160 msec.

Structured PICO

Does His bundle electrocardiography define the site of block in patients with congenital and surgical heart block?

Population

9 patients (7 with congenital heart block [CHB] and 2 with surgical heart block [SHB] following total correction of tetralogy of Fallot)

Intervention

Catheter recordings of His bundle electrograms

Outcome

Site of heart block relative to the His bundlesurrogate

His bundle electrocardiography is useful for localizing the site of block in children with complete atrioventricular block, which correlates with symptoms and bradycardia severity.

Cite This Study

Rosen et al. (1971) studied this question.

synapsesocial.com/papers/6a1c07d9fc87fd06169d00a4 https://doi.org/10.1161/01.cir.44.5.833

Topics

Congenital heart disease adults

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November 1, 1971Circulation

Sites of Congenital and Surgical Heart Block as Defined by His Bundle Electrocardiography

View Full Paper

Ask AI

Bookmark

Why the study?

Does His bundle electrocardiography define the site of block in patients with congenital and surgical heart block?

Population

9 patients

Design

Case_series

Authors

KRKenneth M. RosenBoston University AMAshwin MehtaJaslok Hospital SRShahbudin H. RahimtoolaStructural Heart Disease

Discussion

Member takes

Implication

His bundle ECG localizes block sites in congenital/surgical CHB; hypothesis-generating for symptom correlation, requiring larger validation.

Key Points

To investigate the sites of congenital and surgical heart block using His bundle electrocardiography.
Obtained catheter recordings of His bundle electrograms in seven patients with congenital heart block and two with surgical heart block.
Assessed H-V intervals and QRS patterns to determine block locations in each patient.
Evaluated correlation between block location, bradycardia severity, and clinical symptoms.
In congenital heart block, six patients had block proximal to H and one had block in the His bundle with split H potentials.
Two patients with congenital heart block had short H-V intervals (25 and 30 msec) indicating potential abnormal conduction.
For surgical heart block, block was distal to H with P-H intervals of 125 msec and 160 msec.

Structured PICO

Does His bundle electrocardiography define the site of block in patients with congenital and surgical heart block?

Population

9 patients (7 with congenital heart block [CHB] and 2 with surgical heart block [SHB] following total correction of tetralogy of Fallot)

Intervention

Catheter recordings of His bundle electrograms

Outcome

Site of heart block relative to the His bundlesurrogate

His bundle electrocardiography is useful for localizing the site of block in children with complete atrioventricular block, which correlates with symptoms and bradycardia severity.

Cite This Study

Rosen et al. (1971) studied this question.

synapsesocial.com/papers/6a1c07d9fc87fd06169d00a4 https://doi.org/10.1161/01.cir.44.5.833

Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

Topics

Congenital heart disease adults

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