The Claim
Among patients with structural heart disease undergoing epicardial ventricular tachycardia ablation, a ventricular tachycardia cycle length of at least 280 milliseconds is associated with a 2.84-fold increased risk of arrhythmia recurrence during a median follow-up of 17 months.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In patients with structural heart disease who undergo a specific heart rhythm procedure, those with slower electrical patterns (cycle length ≥280 ms) have a 2.84 times higher rate of the abnormal rhythm returning within about 17 months.
See the scientific wording
Among patients with structural heart disease undergoing epicardial ventricular tachycardia ablation, longer ventricular tachycardia cycle length (≥280 ms) was associated with a 2.84-fold increased risk of recurrence during a median 17-month follow-up, suggesting that slower, more organized reentrant circuits may be more resistant to ablation or more likely to re-emerge.
When the heart's abnormal rhythm moves slowly and in a tight, repeating loop, the tissue path it follows is more organized and harder to destroy with heat or cold, so the rhythm comes back after treatment.
What the research says
1 studyDoctors found that patients whose dangerous heart rhythm was slower and more regular before surgery were much more likely to have it come back afterward, meaning that rhythm was harder to fix with the procedure.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.