QRS 3D Voltage-Time Integral in Narrow QRS Complex - Establishing the Normal Reference Range.

• Tác giả: Jacob D Baer, Ashutosh Bapat, Amulya Gupta, Christopher J Harvey, Yongkuk Lee, Uzair Mahmood, Amit Noheria, Nikhil Parimi, Madhu Reddy, Seth H Sheldon, Zijun Yao
• Ngôn ngữ: eng
• Ký hiệu phân loại: 324.274704 Political parties
• Thông tin xuất bản: United States : medRxiv : the preprint server for health sciences , 2025
• Bộ sưu tập: NCBI
• ID: 675709

Tóm tắt

 BACKGROUND: Vectorcardiographic 3D QRS voltage-time integral (VTI METHODS: We retrospectively analyzed 12-lead ECGs of healthy adults (2010-2014) and compared them to patients with cardiomyopathy with reduced ejection fraction (EF) <
 50%. Using the Kors matrix, 12-lead ECGs with QRS duration ≤120 ms were converted to vectorcardiographic X, Y, and Z leads. VTI RESULTS: The study included 468 healthy adults (age 44.6 ± 17.0 years
  63.9% female) and 314 patients with cardiomyopathy (age 62.1 ± 14.0 years
  34.4% female). VTI CONCLUSION: VTI