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Table 2 Hazard ratio for association between risk factors combined with NSVT and the main composite outcome of SCD and appropriate ICD interventions

From: Left intraventricular pressure gradient in hypertrophic cardiomyopathy patients receiving implantable cardioverter-defibrillators for primary prevention

  Events/patients HR (95% CI) P-value
With risk Without risk
NSVT + unexplained syncope 4/19 7/41 1.12 (0.33–3.84) 0.86
NSVT + family history of SCD 4/10 7/50 3.40 (0.99–11.66) 0.05
NSVT + LV wall thickness ≥ 30 mm 1/6 10/54 0.74 (0.10–5.82) 0.78
NSVT + abnormal BP response 1/8 8/40 0.58 (0.07–4.61) 0.60
NSVT + LGE on CMR 5/26 1/16 3.31 (0.38–38.56) 0.28
NSVT + IVPG ≥ 30 mmHg 9/26 2/34 6.31 (1.36–29.25) 0.02
  1. BP, blood pressure; CI, confidence interval; CMR, cardiac magnetic resonance imaging; HR, hazard ratio; IVPG, intraventricular pressure gradient; LGE, gadolinium enhancement; LV, left ventricular; NSVT, nonsustained ventricular tachycardia; SCD, sudden cardiac death