Changing trends in hypertrophic pyloric stenosis

A three year study on Hypertrophic Pyloric Stenosis, [HPS] was conducted at the Department of Paediatric Surgery, Nishtar Hospital, Multan. Many features of HPS in published literature were not found in our study. There was male predominance, male of female ratio was 9:1. It was seen more frequently among babies of multigravida and 90% had gestation period of more than 35 weeks. Vomiting started within first week of life in all the infants. Weight of 50% patients was within normal limits. There were no gross associated anomalies, though preoperative malrotation was found in only 7.14% patients. Moderate to severe dehydration was noticed in 21.42% and hypokalaemia in 10.7% patients. Ultrasonography was diagnostic in 29.6% cases