stomach Flashcards
morphological forms of gastritis
Catarrhal gastritis
Fibrinous gastritis
Phlegmonous gastritis
Necrotic (corrosive) gastritis
Hemorrhagic gastritis
Pseudomembranous gastritis
causes of gastritis
NSAIDS (Asprin)
Bacterial or viral infection e.g.: H. pylori, Salmonella, C. albicans, herpes virus
Alcohol
Smoking
Stress (trauma, burns, surgery)
Uremia
Chemotherapy drugs
features of gastritis
Epigastric or central pain
Vomiting
Acute upper GI haemorrhage
diagnosis of gastritis
Detailed history: foods taken, medication
Physical examination: pain when pressure applied to the epigastric region
Endoscopy- to rule out ulcer disease
Edematous mucosa, leukocytes infiltrating the mucosa
management of acute gastritis
Anti-emetic – Domperidone
Antacid – cimetidine
PPI Omeprazole 20mg
Spasmolytic
Prostaglandin E1 analog: protect stomach mucosa & inhibit gastric acid secretion
special forms of gastritis
Lymphocytic gastritis - Extremely rare
esosiniophlic gastroenteritis
giant fold gastritis - mentors disease (most common symptom associated is pain )
Gastritis in the context of Crohn’s disease
sarcoidosis + Tb - others
Lymphocytic gastritis
its a chronic gastritis Linked with celiac disease in children and in connection with H. pylori infection
dense infiltration of t lymphocytes
Treatment would be through H.Pylori eradication therapy and appropriate glutenfree diet
diagnosis - increased lymphocyte count
least 25 lymphocytes per 100 gastric epithelial cells is now required for the diagnosis.
types of cells in stomach
chief cells- pepsinogen
parietal cells- IF + ccl
mucous cells-
giant cell gastritis
Unknown cause although H.Pylori suspected to be triggering factor
Mucosal folds become enlarged: chief & parietal cells degenerate resulting in
hypoplasia (little/no acid output) → excessive mucus production
Most cases asymmtomatic: diarrhoea and intestinal protein loss with anaemia and
edema are rare
Usually discovered accidentally during endoscopic examination - folds remain stable,
even with maximum air insufflation
Treatment: folds may be removed via gastric resection.
eosiiniphilic gastroenteritis
parasite infection or an allergic reaction
In a large part of the cases, eosinophilia and elevated serum IgE
Histopathology - eosinophilic infiltration, crypt hyperplasia, villous atrophy, and
ulcerations
Management: Dietary measures and glucocorticoids, possibly supported by lowdose maintenance therapy
google:
- eosiniphic infiltrate (not just to stomach but most likely y stomach and duodenum but can be eaosophgus colone etc
- GI complaints, abdo pain, diarrhoea, weight los
A history of atopy or food allergies is often present.
tx of pernicious anemia
life long therapy of b12, and preparation for the eventual development of iron deficiency anemia
Moreover, these patients should be advised about possible gastrointestinal long-term consequences, such as gastric cancer and carcinoids.
haematological labs for pernicious anemia
A low haemoglobin level
High mean corpuscular volume (MCV)
High mean corpuscular haemoglobin (MCH)
Normal mean corpuscular haemoglobin concentration (MCHC)
Abnormally large and oval-shaped RBCs in the blood smear
Low vitamin B12 serum level
Low or normal folic acid serum level
Low reticulocyte count
Antibodies against intrinsic factor and/or parietal cell may be present in pernicious anaemia
symptoms of b12 deficiency
paraetsheisa
ataxia when walking
s.o.b
glossitis
psychiatric disttrbances
classification of chronic gastritis and how common
ABC
a- 5 %
b- 80%
c- 15%
antibodies found in autoimmune gastritis
Anticancaliculat parietal cell antibodies (PCA), H+/K+-ATPase antibodies and
Intrinsic factor antibodies (IFA)
labs for autoimmune gastritis
Lead to low/no HCL output, hypergastrinemia and pernicious anaemia
causes for the chemical gastritis
bile reflex following a gastrectomy
end result of chronic h.pylori infection
damage of the cells causing hypochlorydia - same as autoimmune
urease test
H.pylori , looks for the enzyme which converts urea into ammonia + co2,done at the same time as a gastroscopy to collect a sample and then you put the sample in a culture that contains urea and you will see an increase inPH
