Because of persistent vomiting, inadequate intake and malabsorption, 32 cases of pyloric stenosis had vari ous degrees of hypocalcemia and hypomagnesemia.

• 32例肥厚性幽门狭窄患儿，因长期大量呕吐、摄入不足及吸收障碍等原因，均有不同程度的低钙、低镁血症，其中低钙24例，低镁18例，钙、镁均低者16例。