Clinical study and significance of the test of heart rate turbulence in patients with diabetic cardiomyopathy / 中国综合临床

ABSTRACT

Objective To study the changes and clinical significance of heart rate turbulence(HRT)in patients with diabetic cardiomyopathy.Methods 24h Holter ECG recordings were examined in 33 patients with diabetic cardiomyopathy(DC)and 30 patients in the control group.Turbulence onset(TO)and turbulence slope (TS)were calculated from Holter recordings.The mean value of TO,TS between the two groups were compared,the relativity among TO,TS,SDNN and LEVDD were analyzed as well.Results TO was significantly higher in the DC group compared with the control group[(-0.38 ± 0.12)％ vs(-1.88 ± 0.13)％,t =7.38,P =0.01)].TS in the DC group was significantly lower than that in the control group[(2.02 ± 0.82)ms/R-R vs (9.72 ± 1.18)ms/R-R,t =18.69,P =0.02)].TO was significantly related to SDNN(r =-0.35,P =0.02)and LEVDD(r =0.68,P =0.01),TS was also significantly related to SDNN(r =0.45,P =0.01)and LEVDD (r =-0.39,P =0.03).Conclusion The manifest of heart rate turbulence is significantly impaired in patients with diabetic cardiomyopathy.