Key result
Baseline QTc dispersion was significantly greater in patients with vasospastic angina compared to those with atypical chest pain (69 vs 44 ms; P<0.001).
Why the study?
Does QTc dispersion differ between patients with vasospastic angina and atypical chest pain, and does it predict susceptibility to ventricular arrhythmias during ischemia?
Case-Control (n=100)
Does QTc dispersion differ between patients with vasospastic angina and atypical chest pain, and does it predict susceptibility to ventricular arrhythmias during ischemia?
Effect estimate: Mean difference (95% CI 16 to 33)
Absolute Event Rate: 69% vs 44%
p-value: p=<0.001
Increased baseline QTc dispersion in patients with vasospastic angina is associated with a higher susceptibility to ventricular arrhythmias during ischemic provocation.
No takes yet. Share an insight, caveat, or question.
May flag higher arrhythmia susceptibility in vasospastic angina; hypothesis-generating and requires prospective validation before clinical adoption.
Suzuki et al. (1998) conducted a case-control in Vasospastic angina (n=100). Vasospastic angina vs. Atypical chest pain was evaluated on Baseline QTc dispersion (Mean difference, 95% CI 16 to 33, p=<0.001). Baseline QTc dispersion was significantly greater in patients with vasospastic angina compared to those with atypical chest pain (69 vs 44 ms; P<0.001).
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