Defibrillators, better with health education/Desfibriladores, mejor con nociones de soporte vital


Automatic external defibrillators (AEDs) fail to save lives when the public does not have basic life support education, according to research presented  at ESC Congress 2016. /Los desfibriladores externos automáticos no sirven para salvar vidas si la ciudadanía no tiene una formación mínima en soporte vital, según un estudio presentado en el reciente congreso de la Sociedad Europea de Cardiología.

“The survival rate of OHCA remains extremely low,” said Dr Nicole Karam, an interventional cardiologist at the European Hospital Georges Pompidou in Paris, France, on behalf of the Paris Sudden Death Expertise Centre led by Professor Xavier Jouven.

The current study, coordinated by Dr Eloi Marijon, was a five-year national prospective assessment of PAD programmes conducted throughout 51 districts in France. The two arms of PAD programmes were evaluated: density of deployed AEDs (per 100 000 inhabitants/1000 km2) and proportion of persons educated in basic life support at least once during the five year period (per 100 000 inhabitants), either by public governmental or private initiatives.

The researchers found huge discrepancies in PAD development across the districts. The proportion of educated persons varied from 6955 to 36 636 per 100 000 inhabitants, while the density of AEDs varied from five to 3399 per 100 000 inhabitants/1000 km2. Overall, only 35.3% of districts developed a significant programme, defined by the authors as both AED density and educational rate above the median (more than 22 AEDs per 100 000 inhabitants/1000 km2 and more than 13 866 educated persons per 100 000 inhabitants).

Another interesting finding was that there was absolutely no correlation between the level of national and local education, indicating a limited collaboration between these two decision makers. “We could have expected more local investment in districts with poor national investment and vice versa, but this is not the case, further highlighting the absence of real deployment strategies for PAD programmes,” said Dr Karam.

OHCA survival rate varied tremendously among districts, ranging from 0 to 43.8%. Survival rates increased with higher levels of PAD implementation, certifying their importance in improving OHCA outcomes. However, survival rates were low in districts with low levels of education, whether they had a high density of AEDs or not (5.9% and 4.7% respectively), and only increased with a rise in population education (figure 1).

Survival rate was much more correlated to the number of educated individuals (correlation coefficient 0.89) than to the number of available AEDs (0.25). In multivariate analysis, only the level of population education was independently associated with survival (odds ratio 1.64, P = 0.004).

Dr Karam concluded: “Even though this study confirms the beneficial effect of PAD programmes, it reveals a huge heterogeneity (more than 100-fold) in their implementation with an uneven investment in each of their arms. It also highlights the insufficient benefit of deploying AEDs if not combined with population education, which should be helpful in planning public health policies.”

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