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.