Block 12 Flashcards
Largest internal organ
Liver
High LFTs and jaundice ar most commonly seen in which type of viral hepatitis
Acute viral hepatitis
LFTs found in hepatocytes
ALT and AST
LFTs found in bile duct lining cells
ALP and GGT
Best, most specific liver test
ALT
Rbc degredation product that is cleared by the liver
Bilirubin
Which is more liver specific, ALT or AST
ALT
Levels of ALT/AST in viral hepatitis
Very high bc of hepatocyte damage
Levels of GGT/ALP/Bilirubin in viral hepatitis
Mildly elevated
Levels of GGT/ALP/Bilirubin in pts with gallstones
Very high
Levels of ALT/AST in pts with gallstones
Mildly elevated
3 types of hepatitis that are blood borne
B C D
95% of pigs/boars are infected with
HEV
Which types of hepatitis are fecal/orally transmitted
HAV and HEV
Is there a vaccine for HAV
Yes
Most easily transmitted type of hepatitis
HBV
- via any body fluid
Coinfects with HBV
HDV
Can you vaccinate against HBV and HDV
Yes
Worst type of hepatitis
HCV
If a patient is infected with HBV, what will show up
HBsAg and Anti-HBcAg (core)
If a patient is in recovery of HBV, what will show up
Anti-HBsAg (anti surface) and Anti-HBcAg (core)
If a patient is immunized for HBV, what will show up
Anti-HBsAg (antisurface)
Number one cause of chronic hepatitis, cirrhosis and liver cancer
HCV
Which type of hepatitis cannot be prevented with vaccine
HCV and HEV
Haptocellular Carcinoma (HCC) is related to which types of hepatitis
HBV globally and HCV US
Occurs at the end of chronic liver disease
Cirrhosis
Jaundice is first seen where
Eye
What give urine a yellow color and feces a brown color
Urobilinogen
Deals with a copper transportation problem
Wilson’s disease
New onset neuropsychiatric manifestations can be related to
Wilson’s disease
Ocular manifestations in Wilson’s disease
Kaiser-fleischer ring
Sunflower cataracts
Where/what is the Kaiser-fleischer ring
Copper in Descemet’s membrane
Where/what is sunflower cataract
Copper in ant and post capsule of the lens
What percent of patients with neurological Wilson’s disease will have kayser fleischer rings
Almost all
What percent of patients with hepatic Wilson’s disease will have kayser fleischer rings
50%
2 ways to treat Wilson’s disease
- Chelating agents
- Blocking intestinal copper absorption with zinc salts
Example of a chelating agent to lower copper levels
Penicillamine
Example of a zinc salt used in treatment of Wilson’s disease
Zinc acetate
Iron overload
Hemochromatosis
What is hemochromatosis sometimes confused with
Polycythemia Vera (PCV)
Common sign of hemochromatosis
Bronzed skin hyperpigmentation
Lab results in hemochromatosis
High serum iron and ferritin
What is cholelithiasis
Gall stones
What is cholecystitis
Inflammation of the gallbladder
Where is pain in cholecystitis
right upper quadrant
Pain is worsened by what in cholecystitis
Fatty foots
Pain and belching after fatty meal
Cholecystitis
Lab results for cholecystitis
Bilirubin/GGT/ALP are very high
AST/ALT are mildly elevated
Pancreatitis will spill what into the blood
Amylase and lipases
Commonly occurs secondary to alcohol abuse or gallstones
Pancreatitis
What is the 20% viral hepatitis rule of thumb
20% of chronic hepatitis progress to cirrhosis
20% of cirrhosis progresses to hepatocarcinoma
HBV carriers do not develop
Anti-HBsAg
Sever, liver destructive hepatitis caused by HBV
Fulminant hepatitis
Is it hard to treat HCV
No, but if not treated there is a 99% chance you will be a carrier
Which is more likely to be cured, HBV or HCV
HCV (90-98% cured, while only about 25% of HBV are cured)
Most likely complication of pancreatitis
Pancreatic cancer
Copper transport protein that may be low in Wilson’s disease
Ceruloplasmin
Levels in Wilson’s disease
Serum ceruloplasmin - low
Serum free copper - high
What causes PCV
RBC overproduction
No urine production
Anuria
Painful urination
Dysuria
Amount of plasm filtered per unit of time
GFR
Toxic waste in the blood
Uremia
How many nephrons in each kidney
1 million
How much urine is produced per minute
1.2 mL
How much urine is produced per day?
1-2 L
Function of the glomerulus
Filters
- produces cell/protein free ultrafiltrate
The 3 segments of the tubule in the nephron
Proximal to loop to distal
The tubule absorbs
H20, Na and glucose
The tubule secretes
K, H, HCO3
What do the collecting ducts do
Concentrate the urine under control of ADH
How does the kidney maintain the acid/base balance
HCO3- Can be regenerated/conserved
H+ is secreted
The kidney regulates what 3 things
BP
RBC production (erythropoietin)
Calcium/phosphorus metabolism (vitD)
When do signs and symptoms first appear in kidney failure
After 75% of the nephrons fail
The GFR reflects what of the kidney
Kidney function
2 main uremia indicators
Creatinine and BUN
Urine in the blood
Uremia (renal impairment)
When the kidney function is lost, what happens to the blood levels of creatinine and BUN
Both increase
Rule of thumb for renal function
100/serum creatinine = renal function
How are BUN and creatinine levels typically related
Creatinine X 10 = BUN
Most common test for evaluating renal function
Serum creatinine blood test
The gold standard for determining GFR
Inulin Clearance
Most common GFR measure
Creatinine clearance
What will be present when you have a UTI
Leukocyte esterase
Protein
Blood
Nitrite
Significance of bilirubin in urine
Indicates liver problems
Starvation indicator
- may be present if person is on a low carb diet
Ketones
Earliest indicator of kidney damage in diabetes
Microalbuminuria
What closely reflects GFR
Creatinine
Often overestimates renal function
Creatinine
Are creatinine levels impacted by diet
No
What is creatinine concentration proportional to
Muscle mass
Often underestimates renal function
BUN
Are BUN levels impacted by diet
Yes
Normal creatinine clearance
115-125 mL/min
- think of CL as a percentage
2 types of cystic disorders
Adult polycystic disease
Child polycystic disease
When are symptoms of adult polycystic disease produces
4th decade
Where are the cysts formed in adult polycystic disease
Liver or pancreas
Most common cause of upper urinary tract obstruction
Kidney stones (nephrolithiasis)
3 types of kidney stones
Calcium (calcium oxalate)
Magnesium ammonium phosphate
Amino acids
Signs/symptoms of kidney stones
Dull, deep, achy pain in back
Or
Severe flank pain
Clammy skin, nausea, heamturia
Second most common type of bacterial infection (behind respiratory tract)
UTI
1 cause of UTI
E. coli
Type of bacteria: E. coli
Gram - rod
Lactose ferminter
Type of UTI: lower abdominal or back discomfort; burning and pain when urinating
Lower UTI
If lower UTI is not treated, what will form
Upper UTI
Type of UTI: shaking chills, moderate to high fever, look and feel sick
Upper UTI
How to diagnose a UTI
Urinalysis
- leukocyte esterase, nitrites, blood and protein
If someone with a UTI has WBC casts, what type if UTI do they have
Upper UTI
Caused by diseases that produce proliferative inflammatory responses that allow loss of BLOOD into urine
Nephritic syndromes
Caused by disorders that increase the permeability of the glomerular capillary membrane, causing massive loss of PROTEIN in the urine
Nephrotic syndrome
Leading cause of chronic renal failure in the US
Glomerulonephritis
Characteristics include RBC casts, low GFR and oliguria
Glomerulonephritis
What will be in the urine in pts with nephritic syndrome
RBCs and RBC casts
Limited proteinuria
Most common form of acute glomerulonephritis
Post streptococcal glomerulonephritis
When do symptoms usually begin with acute glomerulonephritis
1-3 weeks after infection (usually upper respiratory tract infection or pharyngitis)
Signs and symptoms of acute glomerulonephritis
Proteinuria (limited)
Heamturia (cola colored urine)
Hypertension
Edema
What percentage of children recover completely from acute glomerulonephritis
95%
What percentage of adults recover completely from acute glomerulonephritis
60%
- the rest have permanent kidney damage
Disorder that leaks large amounts of protein
Nephrotic syndrome
What are levels of certain substances in nephrotic syndrome
Massive proteinuria Hypoalbuminemia Hypogammagloulinemia Hypercoagulable (loss of AT3, so high risk of throwing a clot) Hyperlipidemia
Diabetic glomerulosclerosis is also known as
Diabetic nephropathy
Nephropathy affects how many t1d patients
30%
What is an important predictor of future diabetic nephropathies
Microalbuminuria
What is pyelonephritis
Inflammation of kidney
Acute pyelonephritis is caused by
UTIs with gram - rods
- #1 cause is E. Coli
If pt has WBC casts
Pyelonephritis
If pt has RBC casts
Glomerulonephritis
What can drugs and toxic substances do to the kidneys
Obstruct urine flow
Produce hypersensitivity reactions
3 causes of acute renal failure
- dec blood to the kidney (prerenal)
- disrupt the structures in the kidney (intrarenal)
- interfere with elimination of urine (postrenal)
What is a very common nephrotoxic drug
Aminoclycosides (gentamicin)
Number 1 cause of chronic renal failure
Diabetes
4 stages of chronic renal failure in order
Diminished renal reserve
Renal insufficiency
Renal failure
End stage renal disease
GFR is reduced to what in renal insufficiency
20-50% of normal