Objective to investigate the application of pulsed-wave Doppler tissue imaging (PW-DTI) in evaluating left ventricular systolic and diastolic function in patients with chronic heart failure (CHF).
目的：探讨脉冲多普勒组织成像(PW DTI)技术在评价慢性心力衰竭(CHF)左室舒缩功能方面的应用。
Conclusion Senile systolic hypertension left ventricular hypertrophy is closely related to heart failure, it is helpful to delay the occurrence of heart failure to improve left ventricular remodel.
结论老年收缩期高血压左室肥厚与心衰密切相关，积极改善左心室重塑有助于延缓心衰的发生。
DHF occurs when signs and symptoms of heart failure are present but left ventricular systolic function is preserved (i. e. ejection fraction greater than 45 percent).
DHF是指有心衰的症状和体征而左室收缩功能正常(射血分数大于45%)。
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