Abstract P006: Association of Age, Temperature and Month-to-month Variation in Sudden Out-of-hospital Cardiac Arrest Due Stroke of 21,986 Cases -All Japan Utstein Registry Study
Aims: To examine whether month-to-month trend of out-of-hospital cardiac arrest (OHCA) due to stroke existed and to investigate its relationship with age, sex and the mean lowest temperatures.
Method and Result: From 2005 to 2008, we conducted a population-based, prospective observational study on OHCA using national database of cardiac arrest registry.
A total of 21,986 adults, aged >=20 with OHCA due to stroke were included in this study; the trend is characterized by a marked peak in January (P <0.0001). The IRR in January was 1.90(95%CI: 1.78-2.03).
These associations were robust after adjusting by age and sex and more marked indicated as aging. ( OR for age>=80=2.07(95%CI 1.85-2.32). The IRR for the lowest temperature adjusted by age, sex and month was 0.945 (p<0.001). When the lowest temperature decreases by one degree, OHCA risk increases 5.8%
Conclusion: Large population based on registry showed monthly variations in OHCA due to stroke. The risk of cardiac arrest due to stroke was the highest in January and lower in mild climate season. The aging and the low temperatures were high-risk of cardiac arrest.
- © 2013 by American Heart Association, Inc.