Plasma levels of adrenaline and noradrenaline increased signficantly in patients with acute coronary syndrome during ambulance transportation – a finding in keeping with studies on normal volunteers. I wonder how much more of an effect helicopter retrieval might have?
Emergency ambulance transport induces stress in patients with acute coronary syndrome
Emerg Med J. 2009 Jul;26(7):524-8.
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There's a study for you to do. Instead of measuring catecholamine levels, you could simply measure heart rate and blood pressure pre and post starting engines.
ReplyDeleteExperience suggests that this even affects intubated and sedated patients. Possibly related to noise, or vibration of tube in trachea.