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Abstract ObjectiveTo explore the changes of heart rate turbulence(HRT) and heart rate variability(HRV) in patients with latent coronary heart disease(LCHD). MethodsTwentyfourhour ambulatory electrocardiography testing was performed on 55 LCHD patients(LCHD group) and 32 healthy people(control group). The two indexes of HRT—turbulence onset(TO) and turbulence slope(TS), HRV time domain indexes of SDNN, SDANN, rMSSD and pNN50, and HRV frequency indexes of TP, LF，HF and LF/HF were measured and analyzed. ResultsHRT and HRV indexes varied significantly between the two groups. The value of TS in LCHD group was significantly lower than that in the control group(P＜0.05) while TO value was higher(P＜0.05). In LCHD group, the values of HRV indexes including SDNN, SDANN, rMSSD, pNN50, TP, LF，HF and LF/HF were significantly lower than those in the control group(P＜0.05). ConclusionAutonomic nervous dysfunction can be obviously identified in LCHD patients. HRT and HRV indexes perhaps play important roles in predicting and making risk evaluation of LCHD.
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2018, Vol. 28 
