Cardiac Risk incidence hitting closer to home?
(Ivanhoe Newswire) – Ever wonder what your risk is of having a heart attack? Chances are you’re thinking about your genetic risk but according to a study, you should be factoring in where you live too.
Dr. Dorian’s study of Greater Toronto Area (GTA) neighborhoods with high and low rates of cardiac arrests found that the factors causing increased risk are complex. "The reasons are more multifaceted than traditional explanations of income, social economic status and education levels," Dr. Dorian, who is a researcher and cardiologist at Toronto's Kennan Research Centre, St. Michael's Hospital, was quoted as saying. "It's important to understand these differences to support better health outcomes." He says his team is exploring heart-healthy behaviors, cultural and ethnic factors as possible other factors that may account for the large differences in cardiac arrest rates between neighborhoods.
The research, led by Katherine Allan, Ph.D. candidate, compared 20 GTA neighborhoods with the highest and lowest incidences of cardiac arrests that take place in the home or public places. The demographic, social and economic characteristics of the neighborhoods were compared to identify similarities or differences, including age, sex, income levels, education and social inclusion. Rates of diabetes and high blood pressure were also compared.
Cardio-toxic neighborhoods, a term coined to describe communities with higher incidence of cardiac arrests, have three to five times higher rates of cardiac arrests. Cardiotoxic neighborhoods tended to comprise older persons with slightly higher rates of diabetes and high blood pressure. No single factor explained the variability between the neighborhoods.
The study looked at over 5,500 cardiac arrests in the GTA between 2006 and 2010.The residential address of each out-of-hospital cardiac arrest patient was spatially mapped to one of 140 Toronto neighborhoods. The 10 neighborhoods with the highest cardiac arrest rates (cardiotoxic) and the 10 with the lowest rates (cardiosafe) were identified. Cardiotoxic neighborhoods tended to comprise older people with slightly higher rates of diabetes and high blood pressure.
"The bottom line is that where you live does affect your risk of cardiac arrest. Our research suggests wealth, education, and social inclusion are important factors but only explain part of the puzzle," Dr. Dorian was quoted as saying. "The link between our health and where we live is well established," Heart and Stroke Foundation spokesperson Dr. Beth Abramson was quoted as saying. "With Canada's high rates of physical inactivity and obesity, it is more important than ever to build communities that encourage active, healthy lifestyles."
Cardiac arrest is a medical emergency which occurs when the heart suddenly and unexpectedly stops beating. Every 12 minutes someone in Canada has a sudden cardiac arrest. Up to 40,000 occur each year in Canada. Up to 85 percent happen in homes and public places such as malls, hockey arenas, or workplaces – and half are witnessed by a bystander such as a family member, co-worker or friend. The survival rate (outside of a hospital) is approximately five percent.
"As we continue to advocate for heart-healthy communities, we need to do everything we can to improve survival rates," Dr. Abramson was quoted as saying. "The Foundation is working in communities across Canada to advocate for the placement of automated external defibrillators (AEDs) in public places and to train Canadians how to use AEDs in combination with CPR." She notes that every minute counts: A bystander who knows how to respond to a cardiac arrest can increase the odds of survival and recovery by 30 percent or more.
Source: Canadian Cardiovascular Society, October 2012
Click Here for a free weekly email with Ivanhoe's latest Medical Breakthroughs.