English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The problem of heat diseases has long been an important one in the tropics, in certain industries and occupations requiring exposure of individuals to high temperatures, and during periods of excessively hot weather in the cities of the United States. In spite of the voluminous literature on the subject, there is no unanimity of opinion regarding the predisposing and precipitating factors which bring about such reactions. Three fairly distinct clinical syndromes may occur as the result of an excessively high environmental temperature. These are heat cramps, heat exhaustion, and heat stroke. The syndrome of heat cramps has long been known among workers in hot environments. In addition to severe muscular cramps, these patients sweat profusely and have a normal temperature. The work of Edsall (1), Moss (2), Haldane (3), Glover (4), Talbott and his coworkers (5, 6), and others (7) suggests that this syndrome results primarily from an excessive loss of electrolytes, namely sodium chloride, in the sweat. The symptoms can be relieved or prevented by the administration of sodium chloride, and the mortality is negligible. The syndrome of heat exhaustion is characterized by profuse perspiration, pallor of the skin and low blood pressure-manifestations of peripheral circulatory collapse. The temperature may be subnormal, normal, or slightly elevated. The symptoms are of a syncopal nature, namely, weakness, dizziness, and sometimes fainting. Nausea and vomiting may occur. As a rule, heat exhaustion is not a serious condition. Recovery is rapid and the mortality low. Heat stroke, on the other hand, is a most serious condition, having a mor-

HEAT STROKE: CLINICAL AND CHEMICAL OBSERVATIONS ON 44 CASES 12