A comparative study of left ventricular function of people with and without D-type personality hospitalized for first-time myocardial infarction

Aim: This study is aimed to comparison between left ventricular (LV) function for people with and without type D personality hospitalized for the first time of myocardial infarction (MI). Materials and Methods: In a descriptive-analytical study, 150 patient hospitalized in heart care centers in Isfahan with definite MI diagnosis were selected by simple available sampling method. Data regarding the determination of D and non-D type of personality were collected by a 14-item questionnaire (DS14) and the results from LV performance evaluation using echocardiograph after 1st time heart attack and before clearance from hospital. Collected data were analyzed using SPSS software and t-test, Chi-square, linear and multiple regression tests. Results: The average of ejection fraction (EF) index in total patient was 43 ± 9.47 with the range of 15–60, 14 people (9.3%) normal EF and 136 people (90.7%) had abnormal EF. The average of EF index in 2 groups with D and non-D type of personality were 43.2 ± 10.5 and 42.9 ± 9, respectively, and based on t-test, the average of EF index in 2 groups had no significant difference (P = 0.86). Furthermore, 7 people (12.7%) in group D and 7 people (7.4%) in non-D group had normal EF, and in these two groups, 48 and 88 people had abnormal EF, respectively (87.3% vs. 92.6%), but according to Chi-square test, EF distribution in 2 personality types had no significant difference (P = 0.28). Conclusion: There is no significant relationship of type D personality with LVEF in people with first-time MI.