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But at this time, when the circulation of the blood is no longer continued through the placenta, that suffocating sensation, which we feel about the precordia, when we are in want of fresh air, disagreeably affects the infant: and all the muscles of the body are excited into action to relieve this oppression; those of the breast, ribs, and diaphragm are found to answer this purpose, and thus respiration is discovered, and is continued throughout our lives, as often as the oppression begins to recur.
The characteristic murmur of this lesion is a systolic blow, accentuated at the apex, transmitted to the left of the thorax, generally heard in the back, near the lower end of the scapula, and transmitted upward over the precordia. Of all cardiac lesions, this is the safest one to have.
A treatment as successful as any in this heart weakness in delirium tremens is morphin sulphate, 1/2 grain, and atropin, 1/15 grain, given hypodermically, with the administration of digitalis hypodermically for its later action on the heart. If the heart is contracting very rapidly, an ice-bag over the precordia will often quiet it.
As soon as the young animal is born, the first important sensations, that occur to him, are occasioned by the oppression about his precordia for want of respiration, and by his sudden transition from ninety-eight degrees of heat into so cold a climate.
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