This volume of a newsletter focused on the treatment and prevention of medical emergencies in the wilderness contains all six issues for the year 1993. Issues include feature articles, book reviews, product reviews, letters to the editor, notices of upcoming wilderness conferences and training courses, additional resources, and general information relevant to medical services and outdoor activities. Feature articles cover the treatment of anaphylaxis (shock); use of helicopters in medical emergencies; responding to diving emergencies; handling suicide attempts; products to disinfect water; and consideration of preexisting medical conditions such as asthma, seizures, diabetes, and hypoglycemia in the wilderness. (LP)