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The importance of retrospective analyses of adverse outcomes

2007; Elsevier BV; Volume: 4; Issue: 4 Linguagem: Inglês

10.1016/j.hrthm.2007.01.001

1556-3871

Bruce D. Lindsay,

Viral Infections and Immunology Research

Danik et al 1 Danik S.B. Mansour M. Singh J. Reddy V.Y. Ellinor P.T. Milan D. Heist K. d'Avilla A. Ruskin J.N. Mela T. Increased incidence of subacute lead perforation noted with one ICD lead. Heart Rhythm. 2007; 4: 439-442 Abstract Full Text Full Text PDF PubMed Scopus (94) Google Scholar observed an increased incidence of subacute perforation or dislodgement of implantable cardioverter-defibrillator (ICD) leads associated with a specific manufacturer. If the analysis were motivated by a suspected difference, this would introduce a potential bias in the results and result in conclusions that might not be applicable to all centers. A bias would not exist if the authors did not suspect a difference before their analysis. In either case, their observations and concerns are valid. Moreover, their conclusions are qualified appropriately, and the authors should be commended for bringing these observations forward.