BACKGROUND: Patterns of temporal variation of cardiac arrests may be important for understanding mechanisms leading to the onset of acute cardiovascular disorders. Previous studies have reported diurnal variation of the onset of cardiac arrests, with high incidence in the morning and in the evening, lack of daily variation during the week, and some seasonal variation. METHODS AND RESULTS: We explored weekly and yearly (seasonal) temporal variation in 6603 out-of-hospital cardiac arrests attended by the Seattle Fire Department. We observed daily variation that peaks on Monday and seasonal variation that peaks in the winter. CONCLUSIONS: Cardiac arrests do not occur randomly during the week or year but follow certain periodic patterns. These patterns are probably associated with patterns of activities.
BACKGROUND: Patterns of temporal variation of cardiac arrests may be important for understanding mechanisms leading to the onset of acute cardiovascular disorders. Previous studies have reported diurnal variation of the onset of cardiac arrests, with high incidence in the morning and in the evening, lack of daily variation during the week, and some seasonal variation. METHODS AND RESULTS: We explored weekly and yearly (seasonal) temporal variation in 6603 out-of-hospital cardiac arrests attended by the Seattle Fire Department. We observed daily variation that peaks on Monday and seasonal variation that peaks in the winter. CONCLUSIONS:Cardiac arrests do not occur randomly during the week or year but follow certain periodic patterns. These patterns are probably associated with patterns of activities.
Authors: Rajat Deo; Ronit Katz; Michael G Shlipak; Nona Sotoodehnia; Bruce M Psaty; Mark J Sarnak; Linda F Fried; Michel Chonchol; Ian H de Boer; Daniel Enquobahrie; David Siscovick; Bryan Kestenbaum Journal: Hypertension Date: 2011-11-07 Impact factor: 10.190
Authors: Pietro Palmisano; Michele Accogli; Maria Zaccaria; Alessandra Vergari; Gabriele De Luca De Masi; Luca Negro; Sergio De Blasi Journal: Int J Biometeorol Date: 2013-10-22 Impact factor: 3.787
Authors: Zian H Tseng; Bradley E Aouizerat; Ludmila Pawlikowska; Eric Vittinghoff; Feng Lin; Dean Whiteman; Annie Poon; David Herrington; Timothy D Howard; Paul D Varosy; Stephen B Hulley; Mary Malloy; John Kane; Pui-Yan Kwok; Jeffrey E Olgin Journal: Heart Rhythm Date: 2008-03-14 Impact factor: 6.343