SOME MEDICAL CONTRAINDICATIONS TO THE USE OF THE STANDARD LIFE JACKET FOR SURVIVAL
NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA WARMINSTER United States
Pagination or Media Count:
SURVIVAL FROM A DISASTER AT SEA IS DEPENDENT UPON THE REACTION OF THE VICTIMS TO FOUR MAJOR STRESSES 1 SPIRITUAL FAILURE, 2 HEAT LOSS AND THERMAL FAILURE, 3 DEHYDRATION AND FLUID BALANCE FAILURE, AND 4 INANITION AND ENERGY FAILURE. The Mae West type of flotation equipment causes two deleterious physiological effects 1 profuse diuresis based upon the Gauer-Henry left atrial volume receptor reflex which is stimulated by the negative pressure breathing required in partial water immersion, and the externally applied gradient pressure, and 2 the rapid heat loss from the immersed part of the body which would be incapacitating even at sea temperatures of 78 F which are now thought to be innocuous. These physiological effects which result from the use of the Mae West type survival equipment increase the severity of an already overwhelming stress. An alternative type of individual flotation garment which would obviate many of these difficulties ha therefore been recommended for further consideration.