ULTRASONIC DIAGNOSIS OF HYPERTROPHIC PYLORIC STENOSIS: AN EXPERIENCE AT GOVERMNENT LADY READING HOSPITAL PESHAWAR

BACKGROUND: To correlate the preoperative ultrasonic findings with the post operative finding ofinfantile hypertrophic pyloric stenosis.OBJECTIVE: The objective of our study is to correlate the preoperative ultrasonic findings with thepost operative finding of infantile hypertrophic pyloric stenosis.MATERIAL AND METHODS: It was a cross sectional descriptive study conducted at Lady ReadingHospital Peshawar from 1st Jan 2014 to 30th October 2014. A total of 58 infants age from 15 days to 8months presented with chief complaints of bilious vomiting were included in the study. Ultrasound wasperformed after clinical diagnosis and both the findings were correlated with post operative findings.Independent variables were the age, sex, length and diameter of pylorus muscle while dependentvariables were the duration of disease, ultrasound and clinical findings. Data was recorded on structuredproforma and was analyzed on SPSS version (20)RESULTS: Out of 68 patients 75% (51) were male and 25% (17) were female. Gastric peristalsis wasvisible in 100% patients, while mass was palpable in 23% (15) patients. Pyloric canal length was abovethe standard length in 93% cases while pyloric diameter and pyloric muscle thickness was more thanstandard in 82% and 78% of the cases. The sensitivity of the ultrasound was 98% while comparing withgold standard of postoperative findings.CONCLUSIONS: Ultrasound is the investigation of choice due to its non invasive nature. Pyloric canallength and diameter is more sensitive than the pyloric muscle thickness for ultrasound diagnosis of theinfantile hypertrophic pyloric stenosis.KEYWORDS: Ultrasound, infant, pyloric stenosis, olive, clinical diagnosis