Circulation is a scientific journal published by Lippincott Williams & Wilkins for the American Heart Association. The journal publishes articles related to research in and the practice of cardiovascular diseases, including observational studies, clinical trials, epidemiology, health services and outcomes studies, and advances in applied (translational) and basic research. From 1996 to 2004, its impact factor has remained close to 10. As of 2009, its impact factor is 14.595 and it ranks first among journals in the Cardiac and Cardiovascular Systems, Hematology, Peripheral Vascular Disease categories. 2008 saw the appearance of six subspecialty journals. The first edition of Circulation: Arrhythmia and Electrophysiology (Circ Arrhythm Electrophysiol) appeared in April 2008, followed by an edition dedicated to heart failure in May titled Circulation: Heart Failure (Circ Heart Fail). The remaining four journals launched once per month from July through October 2008. In order of release they were, Circulation: Cardiovascular Imaging (Circ Cardiovasc Imaging), Circulation: Cardiovascular Interventions (Circ Cardiovasc Intervent), Circulation: Cardiovascular Quality and Outcomes (Circ
New evidence links ozone exposure to potential heart attacks
Young, healthy adult volunteers exposed for two hours to ozone developed physiological changes associated with cardiovascular ailments, according to a small study reported in Circulation, an American Heart Association journal.
Rice University analysis links ozone levels, cardiac arrest
Researchers at Rice University in Houston have found a direct correlation between out-of-hospital cardiac arrests and levels of air pollution and ozone. Their work has prompted more CPR training in at-risk communities.