internal med Flashcards
beriberi
vit B1 def, can induce dilated cardiomyopathy
Amyloidosis
precipitate restrictive infiltrative cardiomyopathy
furosemide and chlortalidone
provoke gout by reducing uric acid excretion
etacrynic acid (and furosemide)
can lead to temporary or permanent hearing loss
Ivabradine
blocking funny Na-K channel, used to decrease resting sinus heart rate in ischemic heart disease
ST elevation can be caused by
pericarditis
myocarditis
acute pancreatitis
pulmonary embolism
hypertrophic cardiomyopathy
beta-blockers are recommended as first-line therapy
Proarrhythmia
anti-arrhythmic drugs in some cases can cause different type, often worse arrhythmia than the arrhythmia which made the use of these types of drugs reasonable
congenital long QT syndrome
can be associated with deafness
suspected intracardiac thrombus
transesophageal echocardiography
post myocardial infarction, detection of viability
cardiac MRI
mitral valve prolapse
2D, color Dippler-echocardiography
systemic use of nitrates
causes small vein expansion, their arterial effect develop at intracoronary delivery
level of CK
elevated 3hrs after MI
troponin T and troponin I level are slightly earlier and more sensitively to myocardial necrosis
transesophageal and transthoracic echocardiography
TEE is more sensitive and more specific: examines the heart more closely and very little absorption and diffusion medium between the heart and transducer probe
fever and “big silent heart”
typical for pericarditis
vulnerable plaque
high lipid content, the exist of inflammatory cells and thin fibrotic “cap”. Content of whitewash of these plaques are typically low and don’t necessarily cause stenosis in the lumen
cephalic phase
gastric secretion is triggered by stimulation of the taste receptors in the mouth
Menetrier disease
exsudative gastropathy of unknown origin, characterized by diffuse thickening of the gastric wall caused by excessive proliferation of the mucous membrane
loss of protein through gastric lesions, lead to edema formation
complain of epigastric pain and diarrhea
no multiple ulcers in the stomach, unlike ZES
pentagastric test
reveals the acidity of the stomach
NSAIDs
cause gastric mucosal damage by inhibiting the synthesis of protective prostaglandins
chronic NSAID users develop “silent ulcers” and are diagnosed only when complications occur (perforation, bleeding)
PPI
inhibit H+/K+ ATPase
cause inhibition of HCl acid secretion, which leads to an increase in serum gastrin levels
somatostatin
inhibits gastric acid secretion and the release of several GI hormones, including gastrin
hepatic encephalopathy can be provoked by
GI bleeding, aggressive diuretic therapy, spontaneous bacterial peritonitis, after TIPS procedure
hepatic encephalopathy
confusion, increased blood ammonia level, foetor, asterixis
PBC (primary biliary cholangitis)
remains asymptomatic for a long time, pruritus might be the first symptoms, AMA (anti-mitochondrial antibody), inc IgM level, middle-aged women
PSC (primary sclerosing cholangitis)
more frequent in males, can be associated with ulcerative colitis, increase the risk of cholangiocellular carcinoma, ANCA positivity
autoimmune hepatitis
inc serum igG, good response to corticosteroid, affects young women
hepatitis E virus
can be transmitted with consumption of undercooked pork meat, become chronic infection in immunocompromised patients, can cause CNS symptoms
Courvoisier-sign
tactile, not painful enlarged gallbladder
Klatskin tumor
extra-hepatic cholangiocarcinoma arising in the junction of the main right or left hepatic ducts to form the common hepatic duct
Caroli syndrome
congenital cystic dilatation of the intrahepatic biliary tree
typical symptoms: recurring cholangitis, shaking chills, fever
fusiform dilation of intrahepatic bile ducts and bile duct stenosis
Mirizzi’s syndrome
characterized by obstructive icterus and dilated hepatic duct
because the stone in the gallbladder fundus presses the common bile duct
Juxtapapillary diverticulum
Raises the risk of bile duct stone by a supposed bile flow obstruction
doesn’t cause chronic liver disease, endoscopic papillotomy is not contraindicated anymore
SPINK1 gene
encodes a protein called pancreatic secretory trypsin inhibitor
metformin and contrast agent
administration of metformin should be suspended by 2 days prior to the examination
can be continued after 48hrs from the examination only if the GFR is >30ml/min/1.73m2
IV iodinated contrast agents may be nephrotoxic and the deterioration of renal function may lead to accumulation of metformin to toxic levels and lead to lactic acidosis
in severely declined kidney function
thiazide-like diuretics are ineffective, loop diuretics could be used to decrease hypovolemia
MEN1
primary hyperparathyroidism, pituitary adenoma, neuroendocrine tumor of the pancreas
acromegaly
investigate GH concentration during oral glucose tolerance test
Primary aldosteronism and primary hyperparathyroidism cause polyuria
due to prolonged hypercalcemia causes the insensitivity of the vasopressin receptors of the kidney tubules
pheochromocytoma
only in MEN2 and not in MEN1
glycoprotein hormones
TSH, LH, hCG, FSH
chromogranin
protein stored in the secretory granules of neuroendocrine cells
chromogranin A examination is used as a specific serum marker of neuroendocrine tumors, can be found in high concentration in carcinoid tumors, gastrinoma, insulinoma, pheochromocytoma
Nelson disease
aggressive ACTH-producing adenoma evolving after bilateral adrenalectomy performed because of Cushing’s disease
diuretic treatment can cause secondary gout
due to inhibition of the tubular secretion of urate
android obesity
waist to hip ratio >1.0 in men or >0.8 in women in obese individuals
gynoid obesity
waist to hip ratio <1.0 in men or <0.8 in women in obese individuals
exercise in DM
In T2DM: dec blood glucose via decreasing insulin resistance and helps reach the optimal body weight
In T1DM: optimal time to exercise is the afternoon (afternoon down phenomenon), but in case of insulin deficiency, exercise alone doesn’t decrease blood glucose levels, but shifts the metabolism towards ketosis
Charcot joint
severe joint destruction is caused by the overextension of the joint due to lack of pain sensation and the associated trophic disorder
Shilling test
Examine B12 absorption
HAM test
traditional screening method paroxysmal nocturnal hemoglobinuria
beta2-microglobulin
reflect B cell proliferation and immuno reaction
bone marrow PAS stain
traditional bone marrow cytochemistry in ALL
antidote for unfractionated heparin
protamin
CLL
appearance of 5G/L or more CD19/CD5 co-expressed lymphocytes in peripheral blood is the official diagnostic criterium
Alarcon-Segovia diagnostic criteria for mixed connective tissue disorder
serology criterion (positive antibodies to U1 RNP antibodies) + clinical criteria: edema of the hands, synovitis, myositis, Raynaud phenomenon, Sclerodactyly
Schirmer test
For Sjogren’s syndrome: less than 5mm/5mins
Belimumab
The only agent for SLE therapy which inhibits B-cell activating factor
HSP (Henoch-Schonlein purpura)
ANCA-negative, palpable purpura, abdominal angina, age <21, neutrophil granulomcytes in the wall of small vessels
PAN (polyarteritis nodosa)
not ANCA-associated
packed red blood cell transfusion
improve oxygen delivery
oxygen dissociation curve
shifted to the right by acidosis, inc PaCO2 and inc temp
Succinylcholine
depolarizing muscle relaxant
bind to nicotinic ACh receptors of the end plates results in sustained depolarization
SE: muscle pain, bradycardia, malignant hyperthermia
hyperkalemia, extensive burns, muscle dystrophy can leads to inc potassium levels => contraindications
continuous thoracic epidural analgesia
most efficient analgesic method and induces symphaticolysis and improves visceral blood flow
can mask symptoms of acute abdomen, but 24-hourly analgesic breaks can minimize the risks
morphine
contraindicated because of its spasmic effect on the Oddi sphincter
Nitrate
veno- and coronary dilating effect and improves symptoms of cardiac decompensation in acute coronary syndrome and reduces ischemia
its use however is contraindicated in hypotension, because further reduction in diastolic pressure diminished coronary flow
thiopental
barbiturate type IV anesthetic which has a tendency to cumulate: best used for induction or short operation
most common side effects: histamine release => asthma is a contraindication
normal arterial blood gas values
pH 7.35-7.45
PaCO2: 35-45mmHg
PaO2: 80-100mmHg
HCO3-: 22-26mEq/L
high anion gap metabolic acidosis
AG = (Na+K) - (HCO3 + Cl): normal value 8-16mmol/L
in uremia, diabetic ketoacidosis, intoxication of ethylene glycol, paraldehyde, isoniazide, salicylate
mechanical ventilation weaning failure
pulmonary causes: reduction of FRC and dystelectasis
cardiac causes: decompensation, since spontaneous breathing increases right heart preload and left heart afterload
energetic causes: muscle weakness
Thrombolysis
indication: in AMI within 12hrs, ischemic stroke within 3 hrs, pulmonary embolism
not contraindicated in ages above 75 or in menstrual bleeding
distributive shock
sepsis, toxic shock syndrome, chemical intoxications, anaphylaxia, neurogenic shock, endocrine shock (thyrotoxicosis, diabetic ketoacidosis)
aspirin intoxication
causes CNS stimulation, vasoconstriction in the inner ear and decoupling of intracellular oxidative phosphorylation
severe cases: cerebral and pulmonary edema, platelet dysfunction and inc bleeding time
most common symptoms: hyperpnea, tachycardiac, hyperthermia or hypotonia, arrhythmias, N/V, GI bleeding, perforation, pancreatitis, hepatic failure
CNS Sx: tinnitus, dec consciousness, seizure
blood gas values: respiratory alkalosis with high anion gap acidosis
Gardner syndrome
predisposes to GI polyposis doesn’t predispose to pheochromocytoma
compound heterozygosity
two different mutations are present on the two different alleles of the same gene in AR inherited diseases
genomic imprinting
in the pathogenesis of Prader-Willi syndrome, Angelman syndrome and Beckwith-Wiedemann syndrome
Trinucleotide repeat disorder
fragile X syndrome
myotonic dystrophy
Huntington’s disease
Friedreich’s ataxia
Associated with breast cancer
Li-Fraumeni syndrome (mutation of p53)
Mutation of BRCA1/2 gene
Cowden syndrome (mutations of PTEN)
von Hippel-Lindau disease
renal cancer, pancreatic cysts and cancer, retinal and cerebellar hemangioblastomas
associated with chromosomal instability arising from deficient DNA repair
ataxia teleangiectasia, Bloom syndrome, xeroderma pigmentosum and Fanconi anemia
Fragile X syndrome
moderate mental retardation in affected boys and mild mental retardation in affected girls
caused by mutations of FMR1 gene, belongs to trinucleotide repeat disorders
enlarged testicles is a characteristic of the disease in affected boys
tumor growth depends on
time of cell cycle, growth fraction (proliferating tumor cell ratio), time to duplicate tumor volume and tumor cell loss (cell death rate)
RECIST-staging system
RECIST (response evaluation criteria in solid tumors) is used for evaluating the therapeutic response in solid tumors
Forrest-Classification
evaluate the bleeding activity of the ulcer
Bismut-Classification
provide an anatomical description of hilar biliary tract cancer
Duke classification
staging of colorectal carcinoma
Adalimumab
human monoclonal antibody used to treat IBD and has no indications in treatment of solid tumor
targeted therapies
imatinib: GIST (gastrointestinal stromal tumor)
sorafenib: hepatocellular carcinoma, kidney cancer
cetuximab: colorectal carcinoma, NSCLC
sunitinib: kidney cancer, GIST
most common primary tumor site in Krukenberg tumor
gastric cancer
NPI
Nottingham prognostic index below 3: excellent prognosis below 3.14: good prognosis 3.14-5.4: moderate long-term prognosis >5.4: poor prognosis
breast cancer that typically affects both sides
Lobular carcinoma
Colorectal cancer staging
TNM staging
MAC (Modified Astler-Coller) classification
Dukes classification
FIGO position
ovarian cancer
Imatinib (Glivec)
For GIST and CML
DeGramont chemotherapy protocol
used in colorectal cancer, not breast cancer
Trastuzumab
in HER-2 positive tumors
Gleason-score
for prostate cancer
non-seminomas
chemotherapy sensitive and less responsive to radiotherapy
isolated ascites
pathological fluid accumulation occurs only in the abdominal cavity without being part of a generalized edema
Bernstein test
To confirm that retrosternal pain is caused by reflux disease
serves for the evaluation of the esophageal acid sensitivity
ZES (Zollinger-Ellison syndrome)
associated with hyperparathyroidism