[Characteristics of the heart rate of emergency physicians in emergency helicopters].

The heart rate behaviour of 14 emergency doctors was examined in 50 cases of medical emergency service by helicopter. In addition, the subjective stress experienced by the probands was inquired by means of a questionnaire. The alarm and the landing at the site of the emergency resulted in the most marked heart rate increases; also during the period of approaching the patient, his rescue and care, persistent tachycardia could be observed. Recovery began slowly during the return flight, but even 15 minutes after completion of the emergency task the heart rate was still higher than the original value before the alarm had been sounded. Subjectively the total stress was considered to be generally low in the opinion of the emergency doctors. It seems that unconscious mechanisms of repression prevent the actual realistic recording of physical and emotional stress during the emergency service by helicopter.