therefor about 10 minutes until it drops sharply to zero. But if the artificiar respiration is performed in this critical point, the blood pressure increased remarkably maintain its previous level. Total spinal anesthesia was associated with R-R prolongation, disappearance of P wave and T deSpression in electrocardiogram. Bradycardia became much conspicuous when ineffective respirations con tinued and anoxia increased. It was considered that the normal cardiovascular reflex are from the sinus, vasomotor center, and the heart had been cut centrally .
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