Abstract
Congenital hypertrophic pyloric stenosis is the most frequent surgical case in infancy.
This study is based on analysis of 42 cases of infants with cong. hyp. pyloric stenosis who are treated surgically at the National Children's Hospital of Japan from 1965 up to date.
1) We have prepared a line graph of the ages at onset in our series and in other foreign children Hospital (Fig. 1). In our series, the age of onset is the same time compared with other reports but the age at admission delays two or three weeks later than that of the other reports (Fig. 2).
2) The time of admission, we have examined routinely R. B. C., W. B. C., Ht, Hb volume, serum electrolytes and acid base balance using Astrup's micro gas analyser.
Of this total cases, about 90 percent were found to have hypochloremic alkalosis and 50 percent of this group were found to have severe alkalosis (Fig. 9).
3) At the preoperative preparation, we have usually used 5 percent glucose solution and normal saline solution intravenously. Potassium chloride has often been added to these fluids as soon as the urine output was established.
4) In extremely cachectic patients, we have given blood transfusion (10ml per-kilogram per-once) added to electrolytes fluids. Fig. 7, 8, 12, show preparation of Ht, Hb volume, acid base balance at the time of operation.
