Pyloric stenosis, also known as congenital hypertrophic pyloric stenosis, is a relatively common developmental malformation of the gastrointestinal tract in newborns, mostly in male infants, and usually appears 2-4 weeks after birth. How to determine pyloric stenosis in infants Pyloric stenosis usually occurs around 2-4 weeks after birth, with symptoms worsening day by day, followed by bile-free jet vomiting, jaundice, reduced number and volume of stools and urine, emaciation, dehydration and electrolyte disturbances. In addition, it can lead to pyloric masses, which can be palpated in the right upper abdomen and have a fusiform, hard, cartilage-like, smooth surface. If the infant has the above symptoms, it suggests that he or she may have pyloric stenosis, at this time, he or she also needs to go to the hospital for examination to confirm the diagnosis, and the specific examination is as follows: 1. physical examination: gastric peristaltic waves moving from the lower left rib cage to the upper right abdomen; 2. barium meal examination: the lower end of gastric dilatation is conical, with strong and deep peristaltic waves, which suddenly disappears in the pylorus; 3. abdominal ultrasound examination: a hypoechoic mass, located in the longitudinal scan posterior and inferior to the gallbladder, the mass is about 1 cm in diameter, with a round or star-shaped circular image in the center. The presence of pyloric stenosis can usually be determined by combining the above-mentioned typical manifestations with relevant ancillary tests. Treatment of pyloric stenosis in infants If pyloric stenosis occurs in infants, it can be treated by the following methods: 1) medication: oral diluted atropine oral solution with local massage can improve; 2) correction of nutritional status: to improve the infant’s dehydration and electrolyte imbalance; 3) surgical treatment: pyloric cricothyrotomy is usually performed to avoid serious consequences. Third, the care of infant pyloric stenosis The infant is weak, and if pyloric stenosis occurs, care should be strengthened as follows: 1. 6 hours after surgery, you can start drinking water, and the next day you can feed; 2. The amount of milk feeding for the infant should be gradually increased, from 10-20 ml, and then gradually increased; 3. 3 days and 7 days after surgery, the wound area should be changed once each.