Arquivos brasileiros de cardiologia · 2025
Prognostic Value of Nonsustained Ventricular Tachycardia in Hypertrophic Cardiomyopathy in a Brazilian Cohort: Comparison with World Literature.
СтатьяСравнительное исследованиеНазвание и аннотация: Перевод в очереди
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Silva Diego Araújo, Arteaga-Fernandez Edmundo, Hotta Viviane Tiemi, Mady Charles, Ianni Barbara, Ramires Felix, Nastari Luciano, Fernandes Fábio, Cardoso Juliano Novaes
Аннотация
BACKGROUND: In hypertrophic cardiomyopathy (HCM), there is a well-known association between nonsustained ventricular tachycardia (NSVT) and the risk of sudden death.
OBJECTIVES: To assess the incidence of NSVT using 24-hour Holter monitoring in patients with HCM in a Brazilian cohort and correlate it with its characteristics and progression.
METHODS: This retrospective study of patients with HCM used 24-hour Holter monitoring to assess the presence of long-lasting, fast NSVT (≥ 10 beats and heart rate ≥ 130 bpm) or the presence of at least 3 episodes of NSVT with ≥ 3 beats and heart rate ≥ 120 bpm. Continuous variables were shown as arithmetic means and standard deviations, and categorical variables were shown as absolute and relative frequencies. P < 0.05 was considered significant.
RESULTS: We included 763 patients, 53.5% of whom were male. Their mean age was 52.6 years ± 16.7. NSVT was found in 10% (76 patients). Only 11 (1.4%) of them had NSVT with ≥ 10 beats and heart rate ≥ 130 bpm. There was no difference in the relationship between NSVT and sex, septum > 30 mm, age ≥ 40 years, betablocker dose, and presence of atrial fibrillation. In the group with NSVT, 15-year all-cause mortality was observed in 26.3%, compared to 15.9% in the group without NSVT (p = 0.021).
CONCLUSIONS: The presence of NSVT on 24-hour Holter monitoring occurred in 10% of patients. Long-lasting, fast NSVT was rare. The presence of NSVT was associated with higher overall mortality during follow-up.
OBJECTIVES: To assess the incidence of NSVT using 24-hour Holter monitoring in patients with HCM in a Brazilian cohort and correlate it with its characteristics and progression.
METHODS: This retrospective study of patients with HCM used 24-hour Holter monitoring to assess the presence of long-lasting, fast NSVT (≥ 10 beats and heart rate ≥ 130 bpm) or the presence of at least 3 episodes of NSVT with ≥ 3 beats and heart rate ≥ 120 bpm. Continuous variables were shown as arithmetic means and standard deviations, and categorical variables were shown as absolute and relative frequencies. P < 0.05 was considered significant.
RESULTS: We included 763 patients, 53.5% of whom were male. Their mean age was 52.6 years ± 16.7. NSVT was found in 10% (76 patients). Only 11 (1.4%) of them had NSVT with ≥ 10 beats and heart rate ≥ 130 bpm. There was no difference in the relationship between NSVT and sex, septum > 30 mm, age ≥ 40 years, betablocker dose, and presence of atrial fibrillation. In the group with NSVT, 15-year all-cause mortality was observed in 26.3%, compared to 15.9% in the group without NSVT (p = 0.021).
CONCLUSIONS: The presence of NSVT on 24-hour Holter monitoring occurred in 10% of patients. Long-lasting, fast NSVT was rare. The presence of NSVT was associated with higher overall mortality during follow-up.