Introduction: Studies have demonstrated the presence of stress and post-traumatic stress among ambulance personnel, but no previous research has focused on the body's reaction in the form of the change in heart rate of ambulance staff in association with specific occupational stress. Hypothesis: The purpose of this study is to investigate whether work as an ambulance professional generates prolonged physiological arousal that can be measured by heart rate in different situations. Methods: Twenty participants carried a pulse-meter in the form of a wristwatch, which continuously measured and stored their heart rate 24 hours per day for a period of seven days. All ambulance alarms that occurred during the test period were recorded in journals, and the participants completed diaries and a questionnaire describing their experiences. The alarms were divided into different phases. Correlations between heart rate in the different phases were computed. Results: Analysis of study data indicated a significant rise of heart rate unrelated to physical effort during an emergency alarm and response. This increased heart rate was noticed throughout the mission and it was not related to the length of experience the staff had in the ambulance profession. In addition, a non-significant trend suggested that alarms involving acutely ill children lead to an even higher increase in heart rate. In addition, this research showed that constant tension existed during sleep, while available for an emergency, indicated by a noticeable increase in heart rate during sleep at work compared to sleeping at home. Conclusions: A rise in heart rate was experienced during all acute emergency missions, regardless of a subject's experience, education, and gender. Missions by themselves generated a rate increase that did not seem to correlate with physical effort required during an emergency response. This study shows that working on an ambulance that responds to medical emergencies is associated with a prolonged physiological arousal. Karlsson K, Niemelä P, JonssonA: Heart rate as a marker of stress in ambulance personnel-A pilot study of the body's response to the ambulance alarm. Prehosp Disaster Med 2011;26(1):21-26. Heart Rate as a Marker of Stress in Ambulance Personnel Prehospital and Disaster Medicine Vol. 26, No. 1 24 Heart Rate as a Marker of Stress in Ambulance Personnel Prehospital and Disaster Medicine Vol. 26, No. 1
Objectives. This study aimed to investigate whether Swedish ambulance personnel differ in the extent of suffering from health problems compared to other occupational groups. Methods. Two cohorts of ambulance personnel from 2001 and 2008, with 1778 and 2753 individuals, respectively, were followed regarding assignment of diagnostic coding (International Classification of Diseases codes) until 2016. These two cohorts represent all who were employed as ambulance personnel by public employers during these years. Two comparison groups were added: other healthcare workers and other professions. All data were retrieved from national registers. The χ 2 test was were used for statistical calculation. Results. Swedish ambulance personnel are at a significantly higher risk of being affected by 'Paroxysmal tachycardia, atrial fibrillation and flutter, other cardiac arrhythmias', by 'Other intervertebral disc disorders' and by 'Arthropathies', when compared to both comparison groups in both cohorts. Almost similar results were seen for 'Gonarthrosis' and for 'Dorsopathies'. Conclusions. Swedish ambulance personnel run the risk of being affected by certain diseases and injuries to a greater extent compared to other professions.
IntroductionAmbulance personnel consider themselves as being healthy, but studies show they often suffer from stress-related illnesses. However, research on the causes of these stress-related illnesses is limited. This study aimed to examine the stress response of Swedish of ambulance personnel during priority-1 alarms. MethodsDuring 90 priority-1 alarms salivary cortisol concentrations were measured at alarm and after end of alarm, and heart rates measured every 15 seconds. Thirteen men and six women participated in the study. A questionnaire with background data was collected. Non-parametric statistical tests were used. ResultsElevated heart rate (median +34.7%) was associated with the actual priority-1 alarm, and during the alarm for women. Median salivary cortisol concentrations at alarm and after end of alarm (14.0 and 14.2 nmol/L respectively) showed non-significant differences. There were individual non-identical responses to the alarms. Alarms concerning traffic accidents, fast track and children generated the highest cortisol concentrations. The stress response showed non-significant differences in age, gender or level of education. Salivary cortisol concentrations and response were lower in the afternoon shift (2pm to 8pm). ConclusionThe alarm causes increased heart rate at the group level but with individual different responses. Predefined fast track schedules and traffic accidents appear to generate measurable stress. Cortisol concentration follows normal diurnal variation of cortisol regarding time point for priority-1 alarms. Time of day does not affect the heart rate
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