Proper Position for Emergency Care
I am currently enrolled in an Emergency Medical Technician (EMT) class and my text for prehospital care of an injured diver recommends keeping the patient in a left lateral Trendelenburg position if possible. As a DAN Oxygen provider, and a diver trained to the level of Rescue, I was under the impression that the left lateral recumbent and/or the Trendelenburg position were no longer advisable. What do you recommend?
The consensus on the ideal posture for an injured diver has changed over the years and, unfortunately, many training materials for emergency medical technicians do not reflect these trends.
The following observations challenge the advice to place an injured diver in the Trendelenburg position:
The following observations challenge the advice to place an injured diver in the Trendelenburg position:
- It is often difficult to distinguish Cerebral Arterial Gas Embolism (CAGE) from cerebral Decompression Sickness (DCS);
- Significant Arterial Gas Embolism (AGE) probably occurs in DCS by arterialization of venous bubbles. A head-down position increases venous return;
- In the smaller vessels, bubbles trapped in circulation will travel with blood flow without regard to posture;
- A prolonged head-down position increases cephalic venous volumes and compromises subsequent middle ear equalization, necessary in recompression therapy;
- The Trendelenburg position limits resuscitation;
- Studies show that the recovery of brain function is slower in those positioned head-down than those horizontal (Dutka 1990).
Posted in Dive Safety FAQ
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