ST-Segment Elevation ACS: Impact of Time to Diagnosis on Door-To- Balloon Time in the Real World. Data from the ARGEN-IAM-ST Registry

Background: Time elapsed from the onset of symptoms to diagnosis (TTD) can influence in achieving a door-to-balloon time 120 min (p 120 min (p: 0.003), as well as in patients admitted during non-working hours:41.9% vs. 30.4% (p <0.001). The independent predictors of achieving a DBT <90 min in the multivariate analysis were age<75 years: OR 1.57 (1.1-2.25; p: 0.01), PCI during working hours: OR 1.32 (1.04-1.67; p: 0.002), PCI in situ: OR 2.4 (1.9-3.0;p <0.001), having a pre-hospital ECG: OR 2.22 (1.73-2.86; p <0.001) and a TTD <120 min: OR 1.53 (1.23-1.9; p <0.001). Conclusions : In patients with TTD <120 minutes, a DBT <90 minutes is more frequently achieved, especially in those treated insitu and during working hours. In referred patients, only 1 in 3 achieves a DBT<90 min and there is no relationship with TTD.