The results of EuReCa ONE highlight that OHCA is still a major public health problem accounting for a substantial number of deaths in Europe. EuReCa ONE very clearly demonstrates marked differences in the processes for data collection and reported outcomes following OHCA all over Europe. Using these data and analyses, different countries, regions, systems, and concepts can benchmark themselves and may learn from each other to further improve survival following one of our major health care events.

A b s t r a c t Background:The chain of survival is a set of most important factors affecting survival after an out-of-hospital cardiac arrest (OHCA). Recognising the difficulties in applying the chain is the key to improving outcomes. Early return of spontaneous circulation (ROSC) after a cardiac arrest is a fundamental factor for patient survival.Aim: To assess the degree to which the location of OHCA affects ROSC during resuscitation efforts. Results: Over the time period covered by the study, 5185 cases of OHCA were reported. Resuscitation was attempted in 2415 (46.6%) cases. ROSC was achieved in 736 (30.48%) cases, including 374 (32.13%) cases in urban areas and 362 (28.94%) cases in rural areas. This difference was not statistically significant. Compared to urban areas, event witnesses in rural areas were more likely to perform bystander resuscitation and receive instructions from the EMS dispatchers. In the whole study group, cardiac disorders were the most common underlying cause of cardiac arrest (70.35%). The median time of ambulance arrival to the scene was significantly shorter in urban areas compared to rural areas (median time 6 min and 12 min, respectively). Conclusions:No significant relation was found between the location of OHCA and ROSC despite the fact that the time to ambulance arrival was significantly shorter in urban areas. In rural areas, resuscitation was more frequently initiated by the event witnesses. Both in urban and rural areas, OHCA was most commonly due to cardiac causes, and the initial recorded cardiac rhythm was a non-shockable one.

Both LSG and LRYGB lead to a significant and comparable body mass reduction. Both procedures significantly decrease of the risk of cardiovascular diseases, based on SCORE and Framingham scales.

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