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 ORIGINAL ARTICLE
Year : 2006  |  Volume : 52  |  Issue : 1  |  Page : 30-33

Does the circadian pattern for acute cardiac events presentation vary with fasting?


1 Department of Cardiology and Cardiovascular Surgery, Doha, Qatar
2 Department of Medical Statistics and Epidemiology, Doha, Qatar
3 Section of Health Education, Doha, Qatar
4 Department of Medicine Hamad General Hospital and Hamad Medical Corporation, Doha, Qatar

Correspondence Address:
Al Jassim Suwaidi
Department of Cardiology and Cardiovascular Surgery, Doha
Qatar
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Source of Support: None, Conflict of Interest: None


PMID: 16534161

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Background: Over one billion Muslims fast worldwide during the month of Ramadan. The impact of fasting on circadian presentation with acute cardiac events is unknown. Aim: To determine if fasting has any effect on the circadian presentation of acute cardiac events. Setting and Design: A prospective study in a general hospital. Materials and Methods: Patients with acute coronary events were divided into two groups based on the history of fasting. Information about age, gender, cardiovascular risk factor profiles, and outcome was collected. The relationship of time of presentation of initial symptoms with fasting was evaluated using Student's t-test, Mann-Whitney U-test, and x2sub analysis. Results: Of the 1019 patients hospitalized during the study period, 162 were fasting. Although, fasting patients were more likely to present to the emergency department in the time periods 5-6 AM (10.5% vs 6.3%) and 11 PM (11.1% vs 7.1%) and were less likely to present in the time periods 1-2 PM (3.7% vs 7.2%) and 5-6 PM (3.7% vs 7.0%); these differences were not statistically significant. Fasting patients were less likely to have their symptoms start between 5 and 8 AM (11.1% vs 19.4%) and more likely to have symptoms between 5 and 6 PM (11.1% vs 6.0%) and 3 and 4 AM (11.1% vs 6.9%). These differences for time of initial symptoms were statistically significant (P=0.002). Conclusion: Exogenous factors associated with fasting, namely, the changes in food intake and/or sleep timings, affect the circadian rhythm and influence the timing of presentation of acute coronary events.






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Online since 12th February '04
2004 - Journal of Postgraduate Medicine
Official Publication of the Staff Society of the Seth GS Medical College and KEM Hospital, Mumbai, India
Published by Wolters Kluwer - Medknow