RESUSCITATION FROM OBSTRUCTIVE ASPHYXIA

Abstract
Obstruction asphyxia was produced in 19 dogs to establish the range and mean values in the time of onset of the critical changes which follow such a procedure. The occurrence of the first terminal gasp, which had been used as the point for starting resuscitation in the expts. on CO asphyxia, corresponded with a mean blood pressure of 42 mm. Hg. This blood pressure value was taken at the point at which resuscitation would be applied to obtain comparative values with different methods for resuscitation. Survival rates obtained by various ressucitation treatments (dogs) were: no treatment [long dash]32% (of 22 dogs); manual artificial respiration in air[long dash]35% (of 20); mechanical artificial respiration in air[long dash]75% (of 20); mechanical artificial respiration with 100% O2[long dash]71% (of 21); mechanical artificial respiration with a mixture of 7% CO2 and 93% O2[long dash]85% (of 20). The mechanical artificial respiration was more effective in producing a large minute volume of ventilation than manual respiration; this accounts for its greater effectiveness in resuscitation. The type of gas used produced no significant difference in the results.
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