2007•Zhongguo shiyong neike zazhiRequires access
Comparison of the effect between metoprolol and diltiazem in patients with cardiac X-syndrome.
Cong Pei-ling
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Abstract
Objective To investigate the effects of metoprolol and diltiazem on patients with cardiac X-syndrome.Methods Forty-two patients with cardiac X-syndrome were randommized to receive metoprolol(20 cases)and diltiazem(22 cases).The clinical presentations,results of treadmill tests and coronary flow reserve(CFR)after 3 months of treatment were compared between the two groups.Results After 3 months therapy,the duration of treadmill was significantly increased.The number of patients with chest pain was significantly decreased.Compared with diltiazem group,the duration of treadmill of metoprolol group was much longer.The coronary flow reserve was lower in diltiazem group than that in metoprolol group.Conclusion Metoprolol may have a better effect than Diltiazem in the improvement of exercise tolerance for the patients with cardiac X-syndrome.