RESUMO
We aimed to investigate a hypothesised association between daily mean temperature and the risk of surgery for acute type A aortic dissection (ATAAD). For the period of 1 January 2005 until 31 December 2019, we collected daily data on mean temperatures and date of 2995 operations for ATAAD at 10 Nordic cities included in the Nordic Consortium for Acute Type A Aortic Dissection (NORCAAD) collaboration. Using a two-stage time-series approach, we investigated the association between hot and cold temperatures relative to the optimal temperature and the rate of ATAAD repair in the selected cities. The relative risks (RRs) of cold temperatures (≤-5°C) and hot temperatures (≥21°C) compared to optimal temperature were 1.47 (95% CI: 0.72-2.99) and 1.43 (95% CI: 0.67-3.08), respectively. In line with previous studies, we observed increased risk at cold and hot temperatures. However, the observed associations were not statistically significant, thus only providing weak evidence of an association.
Assuntos
Aneurisma Aórtico , Dissecção Aórtica , Humanos , Aneurisma Aórtico/epidemiologia , Aneurisma Aórtico/cirurgia , Incidência , Temperatura , Estudos Retrospectivos , Fatores de Risco , Doença Aguda , Resultado do Tratamento , Dissecção Aórtica/epidemiologia , Dissecção Aórtica/cirurgia , Temperatura Alta , Temperatura BaixaRESUMO
The saphenous vein is a frequently used graft material in coronary artery bypass grafting. In this review, three harvesting techniques are presented, and their benefits and disadvantages are discussed. Endoscopic harvesting (EVH) has reduced harvest site complications. The method is safe in terms of mortality, myocardial infarction and revascu-larisation frequency compared with open vein harvesting. A recent meta-analysis recommends EVH as first of choice. The no-touch technique has shown a tendency towards increased graft patency, however, further studies are needed in comparing this technique with EVH.
