A manual of obstetrics . of delivery. From the sixthmonth the probability of living steadily increases to fetus, therefore, is said to be viable when it has attained 702 A MANUAL OF OBSTETRICS. six months of intrauterine existence, although if born pre-cisely at this time the chances are strongly against its sur-vival. The number of infants expelled during the lasttrimester of pregnancy is enormous, and it is necessary toconsider carefully the means of preservation of these feeblelives until the normal degree of vitality have been means resolve themselves into two—namely,
A manual of obstetrics . of delivery. From the sixthmonth the probability of living steadily increases to fetus, therefore, is said to be viable when it has attained 702 A MANUAL OF OBSTETRICS. six months of intrauterine existence, although if born pre-cisely at this time the chances are strongly against its sur-vival. The number of infants expelled during the lasttrimester of pregnancy is enormous, and it is necessary toconsider carefully the means of preservation of these feeblelives until the normal degree of vitality have been means resolve themselves into two—namely, themaintenance of a normal temperature and the administra-tion of a suitable food. Immediately after birth there occurs a rapid fall of fetaltemperature of from ° C. to ° C, largely arisingfrom a dissipation of heat through the agency of the this be true of a healthy fetus at term, and it becomenecessary even under the most favorable circumstancesto maintain a normal temperature by suitable wraps and. Fig. 158.—Auvard incubator or couveuse. an environment of proper warmth, it is much more imper-ative that these immature creatures be afforded the samefavorable circumstances, and even to a greater degree. Thefetal temperature may best be maintained at the normal PATHOLOGY OF THE NEW-BORN. 703 point through the agency of an apparatus technically knownas a couveiise or incubator, various forms of which have beendevised. Those most commonly employed in hospitals andmaternity-institutions are Tarniers, Credes, Auvards (, 159), and Rotchs. Tarniers couveuse consists of abox with two compartments, in the upper of which the childis placed, while the lower is filled with warm water, by
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectobstetrics, bookyear1
