After myocardial infarction (MI), international societies of cardiology recommend an optimal treatment associating four classes of drugs, known as BASI combination (beta-blocker, antiplatelets, statin and inhibitor of the angiotensin converting enzyme). This study shows that the implementation of locally adapted guidelines in a regional hospital (CHCVs, Sion) significantly improve the treatment quality after MI, with a 10% increase of the BASI combination at discharge. Detailed results are discussed. Finally, we provide a table summarizing the optimal treatment strategy with drug examples including doses, which will be helpful to both general practitioners and specialists.