GIT Flashcards
Drugs which are hepatic enzyme inducer?
Alcohol, Barbaturate, Carbamazepin, Phenytion, Rifampicin, Primidone
Remember by (ABC PPR)
Drugs which are hepatic enzyme inhibitor?
Cimetidine, INH, Ketoconazole
Possibility of Drug toxicity should be high in the differential diagnosis of?
acute liver failure, jaundice and abnormal liver biochemistry.
the most common picture of hepatotoxic drug reaction is?
mixed cholestatic hepatitis
1-causative Drugs of cholestasis?
2-causative drugs of cholestatic hepatitis?
3-of acute hepatitis?
4-of Non-alcoholic steatohepatitis?
5-of Venous outflow obstruction?
6-of fibrosis?
1-Chlorpromazin, estrogens
2-NSAIDs, Co-amoxiclav, Statins
3-Rifampicin,Isoniazid
4-Amiodarone
5-Busulfan, Azathioprine
6-methotrexate
Drugs to be avoided in cirrhosis?
NSAIDs,Paracetamol,ACE inhibtor, codeine and narcotics, anxiolytics
(Analgesic should be given cautiously)
Histologcal finding of AIH is?
Interface hepatitis
The onset of AIH issues
Insidious
AIH management?
Predniosolone 40mg daily
Azathioprine 1-1.5 mg/day
What is the most common cause of acute parenchymal liver disease?
Viral hepatitis
Hepatic drug metabolism, involve the conversion of………………… to …………… metabolite
Non-polar
Polar
How long it take for liver function test to return to normal after therapy in drug induced, acute liver injury?
Weeks
Ductopenia caused by which drug?
Co-amoxiclave
Which Auto-antibodies are elevated in autoimmune hepatitis
ASMA,ANA,AMA
What clinical feature is the rule to be found in auto immune hepatitis if general health is good?
Amenorrhea
TIPSS is a stent between…………&………… structures
But the tube inserted in?
Portal vein (which carries blood from the intestines to the liver), hepatic vein (which carries blood from the liver to the heart).
This connection helps to reduce pressure in the portal vein, which can be caused by conditions such as cirrhosis of the liver or portal vein thrombosis. By reducing this pressure, TIPSS can help to relieve symptoms such as ascites (abdominal swelling), variceal bleeding, and hepatic encephalopathy (a condition that affects brain function).
Jugular vein
What are the precipitating factor of encephalopathy
High protein
G.I. bleed
Dehydration
Infection
H. pylori
Histological finding of alcoholic cirrhosis
Fibrosis and Micro-nodule regeneration
Histological, finding of a fatty liver, and alcoholic hepatitis
Fatty liver= centrilobular fat
Alcoholic hepatitis = Mallory bodies
How prognosis of alcoholic hepatitis measured
Maddrey scrore
Discrimination function >32
Glasgow alcoholic>9
What is the histological finding a fulminent hepatic failure?
Massive necrosis
Thrombosis of hepatic vein is called…………
Budd-chiari syndrome
Features of chronic liver failure
Parotid enlargement
Testicular atrophy
Gynecomastia
Spider névé
Palmer erythema
Fulminent hepatic failure is severe hepatic failure with ………
encephalopathy
Circulatory changes of cirrhosis causing?
Spider telangiectasia, palmer erythema, cyanosis
What are the scores that used for scoring prognosis of cirrhosis
The child pugh score
MELD
Coagulopathy of FHF treated with?
i.v vit. K, platlet,FFP.
H2 antagonist(or PPI) to prevent G.I bleeding.
Paracetol induced FHF should be treated with
N-acetylcysteine even after 10 (but< 36) hours
Is a benzodiazepine receptor antagonist may give a transient improvement of encephalopathy?
Flumazenil
Bacteriological sterilization: using what kind of AB
broad spectrum- non-absorbable
Neomycin
Metronidazole
Is 7-12cm,30-50ml, distended 300ml?
GB
Is +/- 3cm,1-3mm in diameter
Cystic duct
Cystic duct nerve supply
.Sympathatic via celiac plexus (inhibitory)
Vagus via its hepatic branch (stimulant)
Cystic duct arterial supply
Cystic A and hepatic A
Is 1-4mm, 4mm in diameter
Commom HD
Is - 7-11 cm, 5-10 mm in diameter depending on the age
CBD
in duodenum stimulate CCK which contract
GB & relax BD, Oddi & duod.
Acid fat proteins
inhibit GB contraction so treatment with it increase gal stone formation.
Somatostatin
Charcot triad and reynold pental found in ……………
Cholangitis
Charcot triad:
Pain - fever- jaundice
Reynold pental:
Pain, fever, jaundice, hypotension(shock), change in mental status
Beading apperance in ERCP found in
Sclerosing cholangitis
One important clinical feature of cholidocholithiasis is
Obstructive jaundice
Filling defect in ERCP found in
Fasciola hepatica
The most commonly used technique in liver transplant is
orthotopic
transplantation
About ? Liver transplant are performed for acute liver failure
And for cirrhosis
10% acute liver failure
71% cirrhosis
Patients in transplantation should match for
Patients are ABO- and size-matched but not HLA-matched with donors.
Indication for Liver transplant in cirrhosis?
First episode of Bact. Peritonitis.
Diuretic resist Ascites.
Recurrent variceal hemorrhage.
HCC < 5cm.
Persistent hepatic Encephalopathy.
Bilirubin > 5.8 mg\ dl in PBC.
MELD > 12,Child- Pugh C
Absolute Contraindications in liver transplant
1- Active sepsis outside the hepatobiliary system
2- Advanced cardiopulmonary disease or acute -
hemodynamic compromise accompanied by compromise or failure of one or more of the vital organs .
3- Presence of malignancy; metastatic or extrahepatic
4- Active alcohol or drug abuse
5- AIDS
Relative Contraindications in liver transplant
1- Age great than 72 years
2- Portal vein thrombosis with mesenteric vein
thrombosis
3- Extrahepatic cholangiocarcinoma
4- HIV positivity
is a common infection in the first 3
months after transplantation and can cause hepatitis.
Cytomegalovirus
The outcome LT for acute liver
failure is ? than that for chronic liver
worse
Nondirected donors are also referred to as
altruistic donor
Relaxation of the LES occurs when
vagal efferent
impulses activate myenteric neurons that release non-
adrenergic, non-cholinergic neurotransmitters,
predominantly nitric oxide (NO), and vasoactive intestinal
polypeptide (VIP).
In ? locates the site
of symptoms specifically to the region of the cervical
esophagu
Oropharyngeal dysphagia
In ? Most patients localize the symptom to the lower
sternum, or at times the epigastrium
Esophageal dysphagia
Three important questions should be asked in Esophageal dysphagia
• 1. is the dysphagia for solid or liquid or both?
• 2. is it intermittent or progressive?
• 3. Does the patient have heartburn?
Patients who report dysphagia with solids and
liquids are more likely to have
an esophageal
motility disorder than mechanical obstruction.
In ? pts may complain of
chest pain and sensitivity to hot or cold liquids.
Diffuse esophageal spasm
Episodic and non-progressive dysphagia without
weight loss is characteristic of
an esophageal
web or a distal esophageal (Schatzki) ring.
*Daily dysphagia is likely not caused by a lower
esophageal ring
characterized by esophageal aperistalsis and
impaired relaxation of the lower esophageal
sphincter and Long history of intermittent dysphagia
Achalasia
? Is achalasia complication
aspiration pneumonia
bird-beak’ appearance is feature of?
Achalasia
produce retrosternal chest pain and dysphagia. It
can accompany GERD. Swallowing is
accompanied by bizarre and marked contractions
of the esophagus without normal peristalsis.
*On barium swallow, the appearance may be that
of a ‘corkscrew’ esophagus
Diffuse esophageal spasm
Anti-reflux mechanisms
- LES tone
• 2. intraabdominal segment of esophagus which acts as a
flap valve
• 3. crural diaphragm (a hiatus hernia can impair this
mechanism)
• 4. secondary peristalsis of esophagus
• 5. swallowed saliva with its bicarbonate content
• 6. gravity
Extra-esophageal features of GERD
• Asthma
• Chronic cough
• Excess mucus or phlegm
• Globus sensation
• Hoarseness
• Laryngitis
• Pulmonary fibrosis
• Sore throat
Regurgiatation: of food and acid into the mouth occurs,
particularly on bending or lying flat. This can lead to excess
salivation in the mouth, commonly known as
water-brash
Correlation between esophagitis and heartburn is
Poor
Water-brash occur due to
Regurgitation of the foot and acid into the mouth occur, particularly on bending of lying flat. This can lead to excess salivation in the mouth commonly known as water brush.
Alarming features that need OGD
Weight loss, dysphagia, bleeding, anemia and mass
Complication of GERD
Stricture
Barrett esophagus
Barrett esophagus almost always associated with
Haitus hernia
Treatment of barrett esophagus
Radio-frequency ablation
These are the most common benign liver tumours, %5
HAEMANGIOMAS
These are rare vascular tumours present as an abdominal mass, or with abdominal pain
or intraperitoneal bleeding.
HEPATIC ADENOMAS
Is useful for unresectable HCC.
Sorafenib
Normal billirubin
0.3 – 1.2 mg/dL
approximately ? bilirubin is produced daily in normal adults.
250-300 mg
Conjugation of bilirubin with glucoronic acid takes
place in liver by
uridine-glucoronyltransferase
(UGT)
It is typically inherited as an autosomal recessive gene,
but occasionally as an autosomal dominant.
Patients have
low levels of UGT enzyme in their livers.
Incidence: 3-10% of total population. Male : female = 8:1
Gilbert’s disease
This is a hereditary conjugated hyperbilirubinemia, that
results from defective hepatic excretion of bilirubin
Dubin-Johnson syndrome (DJS)
Is autosomal recessive disease and is a rare cause of
mixed type (conjugated and unconjugated) of
hyperbilirubinemia
Rotor syndrome
ALT/AST and serum albumin in hepatocellular jaundice
ALT/AST ↑↑↑ in acute, and ↑/↔ in chronic,
serum albumin normal in acute but ↓ in chronic.
INR may be prolonged in both
acute and chronic therefore of no use for differentiation
ALT/ALP
>5,2-5,<2
• If the ALT/ALP: ˃ 5 indicates a parenchymal liver
disease
• If < 2 indicates a cholestatic liver disease
• If 2-5 indicates a mixed type liver disease
If SAAG is ≥ 1.1 →?
If SAAG < 1.1 → ??
portal hypertension
Not portal hypertension
Most common liver abscess symptom?
Abdominal pain is the most common symptom,usually in the right hypochondrium, radiate to the right shoulder. The pain may be pleuritic in nature.
Melena happen due to?
digestion of blood by gastric HCL, enzymes & bacteria .
Less commonly, melaena may be the result of bleeding from the right colon in cases of slow intestinal transit.
is a pre-endoscopic risk assessment tool for patients presenting with upper gastrointestinal haemorrhage (UGIH). It can predict need for intervention or death and identifies low risk patients suitable for out-patient management
Glasgow-Blatchford score
vEGD within 12 hours is generally recommended only for patients with suspected
variceal bleeding
The main risk of capsule endoscopy is capsule retention that can occur in up to 1.5%, Patients at high risk for capsule retention are those with?
heavy NSAID use, tumors, Crohn disease, prior small bowel radiation, or surgery.
Triple therapy treatment for ? can prevent recurrent ulcers and bleeds
Helicobacter pylori
Bleeding peptic ulcer which commonly associated with ingestion of NSAID, ? Is the major source of bleeding
Gastroduodenal artery ( GDA)
It is partial-thickness tears of the mucosa and submucosa that occur near the
gastroesophageal junction. Classically, it develop in alcoholic patients
Mallory–Weiss tear
watermelon stomach,” is named for
the dilated, tortuous mucosal capillaries and veins in the gastric antrum
Gast ric Antral Vascular Ectasia
most common site for variceal bleeding.
Lower oesophagus
Colonic bleeding cause of LGIB
1-Diverticulosis 30%
2-Colitis 24%
3-Hemorrhoids 14%
4-Ischemic 12%
5-IBD %9