Atrial Fibrillation - Demonstration Project

Atrial Fibrillation phenotype algorithm for the DNA Demonstration project.  The algorithm selects cases based on atrial fibrillation but no presence of a heart transplant.  Controls select for records with no evidence of atrial flutter, atrial fibrillation, or atrial tachycardia but with at least one ECG.

 

 

Diagnostic Codes?

Text Keywords?

Narrative Notes to search

Other rules

Cases

Yes (Absence of codes)

Disease only

ECG Impression

 

Possible/

Probable

Yes

Disease only

ECG Impression, H&P, Discharge summary, all notes

May require manual curation of all records

Controls

Yes(Absence of codes)

Disease only

ECG Impression, H&P, Discharge summary, all notes

Must have ECG

Excluded from Analysis

Yes

Disease only

ECG Impression, H&P, Discharge summary, all notes

 

 

Finding Atrial Fibrillation/Flutter on ECG Impressions:
When analyzing electrocardiograms at Vanderbilt, the following regular expression worked perfectly on ~100 patients reviewed:

     REGEXP_LIKE(IMPRESSION,'((^|[ \.])AF($|[ \.]))|(a\w*[ .]?(fib[\w]*|flutter))','i')

 

Data Modalities and Methods Used: 
Author: 
Josh Denny and Melissa Basford
Status: 
Groups audience: 
Institution: 
Date Created: 
Tuesday, March 20, 2012
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PubMed References

20362271