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Background: Type C coronary lesions represent a complex angiographic scenario, although they are rather common in the daily clinical practice of percutaneous coronary intervention (PCI). This article aimed to report the Brazilian clinical practice outcomes of PCIs performed in patients with type C lesions. Methods: This was a retrospective study with information obtained from the electronic database of the Central Nacional de Intervenções Cardiovasculares (National Cardiovascular Intervention Centre -CENIC) of the Sociedade Brasileira de Hemodinâmica e Cardiologia Intervencionista (Brazilian Society of Haemodynamics and Interventional Cardiology -SBHCI), which gathers information on PCI procedures in a dedicated database, entered by volunteer physicians who are members of several Brazilian institutions. Results: Between January, 2010 and December, 2011, 1,693 patients with type C lesions were registered in CENIC. Most patients were males (68%), with a mean age of 63 ± 26.3 years, 40.9% were diabetic, and 45.4% had acute coronary syndromes. Procedural success was achieved in 95.6% of the cases, mortality was 2.1%, acute myocardial infarction was observed in 5%, and repeat target-lesion revascularisation was 0.5% in patients during the hospitalisation. Conclusions: PCIs in type C lesions presented high success and low complication rates in a selected population from the CENIC registry. The former morphological classification of the lesions, still used in the registry, does not properly stratify the outcomes of PCIs. It is urgently necessary to update the data collection form and related measures in order to improve the quality control of the registry.

Objectives: Percutaneous coronary angioplasty with stent implantation has been established as the main form of treatment of atherosclerosis. However, 16 to 44% of patients may evolve with stent restenosis. Periodontitis is an inflammatory condition associated with bacterial infection, that may lead to periodontal tissue destruction and tooth loss. This study aimed to evaluate the association between stent restenosis and periodontitis.Materials and Methods: Coronary angiography exams presenting stent imaging with and without restenosis were analyzed. Patients meeting the inclusion and exclusion criteria were selected and allocated in 2 groups: case (restenosis) and control (without restenosis). We evaluated if systemic and periodontal variables were predictors of restenosis (primary outcome) using a multivariable stepwise logistic regression. Additionally, we compared clinical and periodontal conditions between the control and case groups (secondary outcomes) using Chi-square test and ANOVA test.Results: Data from 49 patients (case n = 15; control n = 34) were analyzed. The results showed that stages III and IV periodontitis and lack of physical activity were significant predictors of stent restenosis (OR 5.82 and 5.98, respectively). Comparisons regarding the diagnosis of periodontal conditions between control and case groups did not present significant differences in the incidence of periodontitis and alveolar bone loss.Conclusion: Stages III and IV periodontitis increased the incidence of stent restenosis. These findings suggest that advanced stages of periodontal disease might lead to the occurrence of negative outcomes after coronary angioplasty with stent placement.

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