Internal Medicine: Gastro intestinal system/Endocrinology Flashcards
(101 cards)
What are the main symptoms of gastritis?
Nausea or recurrent upset stomach Abdominal bloating Abdominal pain Vomiting Indigestion Burning or gnawing feeling in the stomach between meals or at night Hiccups Loss of appetite Vomiting blood or coffee ground-like material Black, tarry stools
What is gastritis and what are the causes?
Gastritis is an inflammation, irritation, or erosion of the lining of the stomach. It can occur suddenly (acute) or gradually (chronic).
The most common causes are H. pylori infection (most common) viruses (e.g. cytomegalovirus and herpes simplex), duodenogastric reflux (most common in children)
What are the diagnostic tools for gastritis
Upper endoscopy Blood tests (to see for aneamia and hypergastrinaemia; elevated gastrine in blood) Fecal occult blood test (stool test) to see if there is blood in the feces.
How to treat gastritis?
Taking antacids and other drugs to reduce stomach acid.
Avoiding hot/spicy/irritating foods.
For gastritis caused by H. pylori infection, your doctor will prescribe a regimen of several antibiotics plus an acid blocking drug (used for heartburn).
What are gallstones and what are the causes? (cholecystitis + gallstones = cholelithiasis)
Gallstones are pieces of solid material that form in the gallbladder. These stones develop because cholesterol and pigments in bile sometimes form hard particles.
Cholecystitis is inflammation of the gallbladder.If the flow of bile is blocked, it builds up inside the gallbladder, causing swelling, pain, and possible infection.
Causes: Genetics Body weight Decreased motility (movement) of the gallbladder Diet
What are the main symptoms of gallstones?
Pain in the upper abdomen and upper back. The pain may last for several hours.
Nausea
Vomiting
Other gastrointestinal problems, including bloating, indigestion and heartburn, and gas
What are the diagnostic tools used to screen for gallstones?
Blood test: Acute cholecystitis is usually associated with a moderate leucocytosis and raised inflammatory markers (e.g. C-reactive protein).
The serum bilirubin, alkaline phosphatase and aminotransferase levels may be marginally elevated
An ultrasound to see if there are gallstones
How can we treat gallstones?
Watchful waiting (in 1/3 of the cases the pain goes away), nonsurgical therapy, and surgical removal of the gallbladder
What is coeliac disease and what are the causes?
Coeliac disease (CD) is a condition in which there is inflammation of the mucosa of the upper small bowel that improves when gluten is withdrawn from the diet and relapses when gluten is reintroduced. Up to 1% of many populations are affected, though most have clinically silent disease.
What are the main symptoms of coeliac disease?
In affected children, such symptoms may include diarrhea, vomiting, weight loss or lack of weight gain, painful abdominal bloating, irritability, and/or other abnormalities. Affected adults may have diarrhea or constipation; abdominal cramping and bloating; abnormally bulky, pale, frothy stools that contain increased levels of fat (steatorrhea); weight loss; anemia; muscle cramping; bone pain; exhaustion (lassitude); and/or other symptoms and findings.
How to diagnose coeliac disease?
Bowel biopsy is the golden standerd.
How to treat coeliac disease?
Dietary elimination of wheat, barley and rye usually produces a clinical improvement within days or weeks.
What is diabetes mellitus and what are the causes?
Type 1 diabetes, which has an immune pathogenesis and is characterized by severe insulin deficiency (no insulin present to guide the glucose for absorption)
Type 2 diabetes, which results from a combination of insulin resistance and less severe insulin deficiency (insulin resistence)
What are the main symptoms of diabetes?
DM1: Excessive thirst and appetite Increased urination (sometimes as often as every hour) Unusual weight loss or gain Fatigue Nausea, perhaps vomiting Blurred vision In women, frequent vaginal infections In men and women, yeast infections Dry mouth Slow-healing sores or cuts Itching skin, especially in the groin or vaginal area
DM2: no specific symptoms for the person to be felt, but the body has elevated LDL, C-reactive protein etc..
What is the prevalence of diabetes?
DM1: WHO estimated in 1995 that there were 19.4 million people with type 1 diabetes and that the number will rise to 57.2 million by 2025.
DM2: The overall prevalence within the UK
is 4-6%, and the lifetime risk is around 15-20%. Type 2 diabetes is 2-4 times as prevalent in people of South Asian, African and Caribbean ancestry who live in the UK, and the life-time risk in these groups exceeds 30%. High rates also affect people of Middle Eastern and Hispanic American origin living western lifestyles.
What are the diagnostic tools for diabetes?
Glucose tolerance test - WHO criteria Fasting: - Normal: <7.0 mmol/L -Impaired glucose tolerance: <7mmol/L - DM: >7 mmol/L 2h after glucose - Normal: <7.8 mmol/L -Impaired glucose tolerance: 7.8-11.0 mmol/L -DM: >11.0 mmol/L
Haemoglobin A1c (HbA1c)
Measure of a prevailing blood glucose concentration over several weeks.
- Increased risk of DM: HbA1c 5.7-6.4% (39-46 mmol/L
- DM: HbA1c >6.5% (48 mmol/L)
Other routine investigations
urine testing for protein, full blood count, urea and electrolytes, liver biochemistry, random lipids
How can you treat diabetes?
Diet -Low in sugar -High in starchy carbohydrate (low GI) -High in fibre -Low in fat (especially saturated fat) Weight loss Encourage to increase in activity level.
Insulin treatment
Short-acting: used for pre-meal injection in multiple dose regimens, for intravenous infusion in labour or during medical emergencies and in patients using insulin pumps.
Intermediate and longer-acting insulins: have their structure modified to delay absorption or to prolong their duration of action.
Inhaled insulin
What is ketoacidosis and what are the causes?
State of uncontrolled catabolism associated with insulin deficiency.
Hallmark of type 1 diabetes.
- Previously undiagnosed DM
- Interruption of insulin therapy
- Stress of intercurren illness.
What are the main symptoms of ketoacidosis?
Prostration, hyperventilation, nausea, vomiting and occasionally abdominal pain.
Confusion and stupor present in more severe cases. 5% present in coma.
Hyperventilation, smell of ketones on the breath, skin is dry, body temperature is subnormal.
What are the diagnostic tools for ketoacidosis?
Confirmed by demonstrating hyperglycaemia with ketonaemia or heavy ketonuria and acidosis. Clinical - Pulse >100 b.p.m. or <60 b.p.m. - Systolic BP <90 mmHg - Glasgow Coma Score of <12 (see table 22.10, p. 1092) - O2 saturation <92% on air Bloods - Blood ketones >6 mmol/L - Bicarbonate <12 mmol/L - Venous/arterial pH <7.1 - Hypokalaemia on admission <3.5 mmol/L
How to treat ketoacidosis?
Replace fluid losses with 0.9% saline
Replace the electrolyte losses. Patients have total body potassium deficit of 350 mmol.
Restore the acid-base balance
Replace the deficient insulin: short-acting insulin is given.
Monitor blood glucose closely
Seek the underlying cause: chest X-ray, urine and blood cultures and an ECG.
What is retinopathy and what causes this?
Damage to the retina and iris cause by diabetes, which can lead to blindness.
Most commonly diagnosed diabetes-related complication.
What are the main symptoms of retinopathy?
Loss of vision
What are the diagnostic tools for retinopathy?
Visual acuity checked using a pinhole and the patient’s distance spectacles
Ocular movements
Iris: examined for rubeosis
Retina: examined systematically looking at the disc, then all four quadrants and finally the macula.