ObjectiveTo observe the clinical efficacy of cardiac resynchronization therapy (CRT) in patients with chronic congestive heart failure (CHF).Methods12 patients with a heart function ranging from III to IV grade (NYHA grading) were selected.All the patients were diagnosed by Doppler imaging and ECG check.CRT pacemakers were planted in patient’s heart after we found that they all had the indications to CRT.The patients were required to come back to make Doppler imaging and ECG check 1 week and 4 weeks after CRT,then their heart function and state of an illness were compared.ResultsAfter CRT,all the patients′ heart function were improved obviously.Both LVEF and LVEDD were increased,while secondary mitral regurgitation reduced,and NYHA functional class enhanced to I-II class.ConclusionCRT has a significant therapeutic effect in patients with CHF.

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