Background To investigate the effect of Metoprolol succinate sustained-release tablets and Metoprolol tartrate tablets on cardiac in chronic congestive heart failure patients.
Methods 182 patients with clinical data, who suffered with chronic congestive heart failure were collected, and 67 cases were excluded. The patients were divided into 2 groups according to the different types of dosage forms: Metoprolol succinate sustained-release tablets group and Metoprolol Tartrate Tablets group. Patients in Metoprolol Tartrate Tablets group took 25 mg-50 mg Metoprolol Tartrate Tablets every day, while patients in the other group took 23.75–95 mg metoprolol succinate sustained-release tablets every day. Average heart rate, LVDd, EF, BUN and Crea were measured.
Results Compared with Metoprolol Tartrate Tablets, Metoprolol succinate sustained-release tablets decreased average heart rate in chronic congestive heart failure patients (64.0 ± 5.4 vs 69.5 ± 7.6, p < 0.05). The two groups had no difference in LVDd, EF, BUN and Crea.
Conclusions Metoprolol succinate sustained-release tablets decreased average heart rate in chronic congestive heart failure patients compared with Metoprolol Tartrate Tablets. The effect on cardiac and renal function was equal.
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