Changes and significance of deceleration capacity of rate and heart rate deceleration runs in sudden death patients after myocardial infarction
YANG Li
ZHANG Nan-nan
Abstract：Objective To discuss the value of deceleration capacity of rate (DC) and heart rate deceleration runs (DRs) in early warning of sudden death risk in patients after myocardial infarction (MI).Methods MI patients (n=200) were chosen from Feb. 2014 to Jun. 2015, and divided, according to prognosis, into sudden death group (n=12) and non-sudden death group (n=188). The clinical materials were retrospectively analyzed, and difference in levels of DC and DRs were observed in 2 groups. The differences in heart rate variability (HRV) and relevant laboratory indexes were compared between 2 groups, and correlation among DC, DRs, HRV and relevant laboratory indexes were analyzed.Results The levels of DC and DRs were significantly lower in sudden death group than those in non-sudden death group (P<0.05). SDNN, SDANN and LVEF were significantly lower in sudden death group than those in non-sudden death group (P<0.05). The levels of DC and DRs were positively correlated to SDNN, SDANN and LVEF (P<0.05), and not significantly correlated to RMSSD, PNN50 and LVPS (P>0.05). Conclusion The levels of DC and DRs are lower and closely correlated to HRV in sudden death patients after MI.
Keywords：Deceleration capacity of rateHeart rate deceleration runsMyocardial infarctionSudden deathHeart rate variability
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 971-973 )