Gynaecomastia induced by phenytoin in men with epilepsy.

immersion in cold water causes bradycardia.4 These effects may occur during burial in an avalanche of snow. Hypothermia often.occurs in burial in an avalanche. The face is often the only area unprotected by clothing and in direct contact with the snow, which may be important as it is the face that triggers the diving reflex. This is unlike immersion in cold water, when cooling is more uniform. During immersion water may enter the nasopharynx, causing cooling of the brain, or may be inhaled, causing rapid cooling of the heart and brain before circulation stops. Although this would not occur during burial in snow, snow has been found packed in the mouth and nose and may be inhaled, possibly with similar effects (N J MacDonald, personal observations).