Association of time of MI and left ventricular ejection fraction

Objective: This study was performed to determine the association of time of MI and left ventricular ejection fraction. Methods and materials: In this cross-sectional descriptive-analytical study, 306 patients with MI attending to a tertiary health care center from 2006 and 2009 in Tehran, Iran that were admitted in cardiac care unit (CCU) were enrolled. Results: The mean (± standard deviation) EF in group 1 was 44.42 ± 10.36 percent and in group 2 was 42.86 ± 9.79 percent with no statistically significant difference (P > 0.05). 11 subjects (5%) in group 1 and 14 patients (7.7%) in group 2 were dead with no statistically significant difference (P > 0.05). Conclusions: Finally, according to the obtained results it may be concluded that left ventricular ejection fraction and mortality rate may be similar between different diurnal times and so the quality of prepared care to patients is equal in different shifts.