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AMI patients with persisting prehospital delay have been reported worldwide. Some studies pointed higher scores of chest pain effect acute myocardial infarction (AMI) patients’ delay of hospitalize. However, the role of individual’ pain sensitivity level, pain catastrophizing score and personality traits not yet well addressed that may influenced AMI patients’ delay.
The aim of this study was to identify the role of pain sensitivity, pain catastrophizing level and personality traits related to Chinese AMI patients’ prehospital delay in China.
A cross-sectional study was conducted at four tertiary referral center hospitals in China by face-to-face interview using a structured questionnaire which including Pain Sensitivity Questionnaire (PSQ), Pain Catastrophizing Scale (PCS), Eysenck Personality Questionnaire (EPQ) and Short Form of McGill Pain Questionnaire. Prehospital delay refers to the time between symptoms onset and arrival at adequate equipped hospitals exceeding 90 minutes in this study. Descriptive statistics were calculated for all the variables. Logistic regression was used to identify whether pain sensitivity, pain catastrophizing level and personality traits were predictors of prehospital delay, controlling for the known socio-demographic and medical factors.
Of the 329 Chinese AMI patients interviewed, among were 184 male (55.9%) and 145 female (44.1%). 45.0% (148/329) participants have appeared in hospitals < 90 minutes after heart attack while 55.0% (181/329) participants were not. We found prehospital delay related to lower PSQ-total score (OR= 0.87; 95% CI= 0.79-0.97) and lower PSQ-minor scores (OR=0.83; 95% CI=0.74-0.92), but not PSQ-moderate score (P=0.087). A strong association between personality traits and AMI patients’ prehospital delay were observed, the lower scores of EPQ- P, E, N , and L subscales shown 52.0% (171/329), 91.2% (300/329), 65.3% (215/329) and 95.1% (313/329) participants have prolonged time to arrive hospitals after AMI onset, respectively. No significant relationship was found between pain catastrophizing score and prehospital delay (P=0.496).
The findings of this study could provide some information towards to individual’ pain sensitivity level, pain catastrophizing score and personality traits, to investigate the potential risk factors that may impact AMI patients’ delay, in order to lessen the time for medical treatment when someone experiencing an AMI.