However, when the BMI was >23 kg/m 2 , the higher BMI did not add to the risk of VT/VF but showed a trend of decreased risk of VT/VF (HR 0.96, 95% CI 0.90–1.02).
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Non-linear Association Between Body Mass Index and Ventricular Tachycardia/Ventricular Fibrillation in Patients With an Implantable Cardioverter-Defibrillator or Cardiac Resynchronization Therapy Defibrillator: A Multicenter Cohort Study.
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The sentences
Perhaps when BMI is in a certain range (BMI ≤23 kg/m 2 in our study), and the BMI is increased, then the harm caused by BMI dominates, which would lead to the increased risk of VT/VF; however, when BMI exceeds a certain range (BMI >23 kg/m 2 in our study), the benefits conferred by the BMI play a leading role, and the risk of VT/VF exhibits a decreasing trend.