The present study deals with the effect of local distension of the stomach on the motor function of the pyloric portion. The experiment was undertaken with canine stomachs. A. rubber balloon was introduced into the stomach. And, by inflating the balloon with air. fnn.dus, body and pyloric region of the stomach was distended individually. The results are summarized as follows: 1) When the same a...

Co-existing pyloric submucosal masses with hypertrophic pyloric stenosis (HPS) are very rare and treating these lesions is always a problem. A 20-day-old boy presented with recurrent episodes of projectile non-bilious vomiting lasting for 5 days. HPS was suspected due to the presenting age and the symptoms. The sonography demonstrated not only circumferential wall thickening of the pylorus, but...

Objectives: To evaluate the validity of ultrasound for diagnosis and exclusion of pyloric stenosis in the infants with nonbilious vomiting. Methodology: In a cross-sectional study, 444 consecutive infants with clinical suspicion of pyloric stenosis were evaluated by ultrasound (US) and categorized as pyloric stenosis or not according measuring parameters as muscle thickness, muscle width and ca...

The gastric antral mucosal diaphragms also called gastric antral webs (GAW) are circumferential membranes of mucosa and submucosa with a central aperture that occur in the gastric antrum near the pyloric canal [1]. They form a rare cause of gastric outlet obstruction (GOO) in adults [2,3]. A 45-year-old well-nourished male presented with postprandial epigastric pain, bloating, fullness and belc...

Four studies reported an increasing incidence of pyloric stenosis during the late 1970s from geographically diverse areas of the United Kingdom. It was suggested that the increased incidence might be related to changes in infant feeding practices. We used data from the Metropolitan Atlanta Congenital Defects Program, a population based birth defects registry, to examine the secular trends and d...

CONTEXT Pyloric stenosis is the most common condition requiring surgery in the first months of life. Case reports have suggested familial aggregation, but to what extent this is caused by common environment or inheritance is unknown. OBJECTIVES To investigate familial aggregation of pyloric stenosis from monozygotic twins to fourth-generation relatives according to sex and maternal and patern...

The neuropeptide, red pigment concentrating hormone (RPCH), strengthened the inhibitory synapse from the lateral pyloric (LP) neuron to the pyloric dilator (PD) neurons in the pyloric network of the stomatogastric ganglion (STG) of the lobster, Homarus americanus. RPCH produced several-fold increases in the amplitude of both action potential-mediated and non-impulse-mediated transmission that p...

Pyloric atresia is a congenital anomaly manifested by gastric outlet obstruction. The radiographic signs are characterised by the presence of the gas-bubble sign, the pyloric dimple sign and the absence of the beak sign. The differential diagnosis of these signs is discussed in view of other gastric outlet obstructions. Ultrasonography is of value in demonstrating the absence of the normal echo...

1. A long-lasting restructuring of the pyloric neural network of the lobster stomatogastric nervous system (STS) by a multisynaptic sensory afferent is described. This restructuring can be obtained either by mechanical stimulation of the pyloric region of the stomach or by brief high-frequency electrical stimulation of a nerve that innervates this region, the lateral posterolateral nerve (lpln)...

We examined the dopamine (DA) modulation of calcium currents (ICa) that could contribute to the plasticity of the pyloric network in the lobster stomatogastric ganglion. Pyloric somata were voltage-clamped under conditions designed to block voltage-gated Na+, K+, and H currents. Depolarizing steps from -60 mV generated voltage-dependent, inward currents that appeared to originate in electrotoni...