Disturbances in Digestion Flashcards
(38 cards)
unpleasant sensation often localised to the abdomen that is typically interpreted as an urge to vomit.
NAUSEA
forceful oral expulsion of gastric contents.
VOMITING
Rythmatic synchronized contractions of the diaphragm, abdominal and intercostal muscles against a closed glottis causing the intra abdominal and decrease the intra thoracic pressure causing the gastric contents to go up through the esophagus
RETCHING
Explain the process of vomiting
Neurotransmitters involved in coordinating vomiting
How “SHAD”
- Serotonin
- Histamine
- Acetylcholine
- Dopamine
What are the 3 phases of vomiting?
[What’s up “PRE”]
What’s up “PRE”
- Pre-ejection
- Retching
- Expulsion
prodromal nausea, salivation, and retrograde peristalsis to force intestinal contents into the stomach and lower oesophagus
PRE-EJECTION
relaxation of oesophageal sphincters, pyloric contraction, violent contraction of diaphragm and abdominal muscles to expel gastric contents
EXPULSION
closure of epiglottis and elevation of soft palate
RETCHING
Red flags to suggest a serious cause of vomiting:
- shock and volume depletion
- severe abdominal pain
- abnormal vomit – haematemesis,
- coffee-ground appearance, bilious
acute or focal neurological symptoms
Common antiemetic drugs
[MOPDA]
- Metoclopramide
- Ondansetron
- Promethazine
- Domperidone
- Aprepitant
Transient inflammation of the gastric mucosa due to local irritants such as alcohol, aspirin, bacterial endotoxins
ACUTE GASTRITIS
Most common cause of chronic gastritis
HELICOBACTER PYLORI
can occur from hematologic disorders that decrease platelet levels or function such as dengue hemorrhagic fever & thrombocytopenia.
GI BLEEDING
A type of bacteria that infects your stomach. It can cause sores and inflammation in the lining of your stomach or the upper part of your small intestine (the duodenum).
H. PYLORI
Lower GI bleeding is most often caused by ______ & ______
Hemorrhoids & Colon polyps
3 major causes of GI bleeding
- Peptic Ulcer Disease (PUD)
- Gastritis
- Esophageal varices
Symptoms of GI bleeding
- Blood in vomit/stool
- Black tarry stools (melena-LGIB)
- Abdominal pain
- Blood loss
What is the best diagnostic test to rule out upper gastrointestinal bleeding?
ENDOSCOPY
Lab test that shows if the rbc level, hgb, & hct are decreased (indicatives if the pt. is losing blood)
CBC
What is the best diagnostic test to rule out lower gastrointestinal bleeding?
COLONOSCOPY
S/sx of hemorrhagic shock
- Decreased BP
- Increased PR
- Weak & thready pulse
- Hypothermia
shows if the rbc level, hgb, & hct are decreased (indicatives if the pt. is losing blood)
Partial thromboplastin time (PT) and Activated Partial Thromboplastin Time (APTT)
What fluids do you administer if the patient is bleeding?
- Isotonic solutions (PNSS bolus or PLR)