pyloric stenosis

(noun)

A narrowing of the pylorus that prevents the normal passage of food from the stomach to the small intestine.

Related Terms

Examples of pyloric stenosis in the following topics:

  • Pylorospasm and Pyloric Stenosis

    • Pyloric stenosis (infantile hypertrophic pyloric stenosis) causes severe projectile non-bilious vomiting in the first few months of life.
    • Pyloric stenosis (or infantile hypertrophic pyloric stenosis) is a condition that causes severe projectile non-bilious vomiting in the first few months of life.
    • In pyloric stenosis, it is uncertain whether there is a real congenital narrowing or whether there is a functional hypertrophy of the pyloric sphincter muscle.
    • Most cases of pyloric stenosis are diagnosed/confirmed with ultrasound, if available.
    • The danger of pyloric stenosis comes from the dehydration and electrolyte disturbance rather than the underlying problem itself.

  • Heart Valve Disorders

    • ., one of the leaflets of the valve is too thick, misshaped, or doesn't separate from another leaflet), or the vessel above or below the valve being deformed in such a way as to prevent the proper flow of blood, the term pulmonary valve stenosis is used.
    • Heart valve dysplasia is an error in the development of any of the heart valves, and a common cause of congenital heart defects in humans as well as animals; tetralogy of Fallot is a congenital heart defect with four abnormalities, one of which is stenosis of the pulmonary valve.
    • The center of the image shows an aortic valve with severe stenosis due to rheumatic heart disease.

  • Phylum Echinodermata

    • Starfish are mostly carnivorous and have a mouth, oesophagus, two-part pyloric stomach with a pyloric duct leading to the intestine and rectum, with the anus located in the center of the aboral body surface.
    • Pyloric stomach 2.
    • Pyloric duct 7.
    • Pyloric cecum 8.

  • Heart Murmurs

    • Anatomical sources of heart murmurs include stenosis of the bicuspid aortic valve which tends to appear between 40 and 70 years of age, and stenosis of the tricuspid aortic valve where symptoms more likely to appear after 80 years of age.
    • Hypertrophic subaortic stenosis may also cause heart murmur, with symptoms consisting of a harsh murmur in mid-systole, often accompanied by Brisk Bifid Carotid upstroke.

  • Gross Anatomy of the Stomach

    • Pyloric sphincter or pyloric orifice, dividing the stomach from the small intestine.

  • Microscopic Anatomy of the Stomach

    • The pyloric antrum has thicker skin cells in its walls and performs more forceful contractions than the fundus.
    • The pylorus is surrounded by a thick circular muscular wall which is normally tonically constricted, forming a functional (if not anatomically discrete) pyloric sphincter, which controls the movement of chyme.

  • Digestive Properties of the Stomach

    • Gastrin is released by G-cells in the stomach, via the base cells of the pyloric , cardiac , and fundic glands, in response to distension of the antrum, and digestive products (especially large quantities of incompletely-digested proteins).
    • The pyloric gland, found in the stomach, secretes gastrin and other hormones.

  • The Complement System and Heart Disease

    • This may cause a valve prolapse, adhesion of the adjacent cusps, of these valves, and occlusion of the flow tracts of blood through the heart, which causes disease known as valve stenosis.

  • Platelets and Coagulation Factors

    • Non-physiological flow conditions (especially high values of shear stress) caused by arterial stenosis or artificial devices (e.g. mechanical heart valves or blood pumps) can also lead to platelet activation.

  • Effects of Smoking

    • Among the diseases that can be caused by smoking are vascular stenosis, lung cancer, heart attacks, and chronic obstructive pulmonary disease.