METHODS	The changes in cAMP , cGMP , serum cardiac troponin T ( cTnT , a specific marker reflecting myocardial injury ) , creatine kinase ( CK ) and creatine kinase isoenzyme ( CK-MB ) were simultaneously monitored in 62 chronic CHF patients , distributed in the two groups , the routine treatment group and the routine treatment + SI group , by randomized grouping method , and the therapeutic effect of the two groups was compared .\