Path 1 Flashcards
Inc GGT+ALP > inc AST+ALT
Obstructive picture
i.e. gallstones, malignancy
Inc AST+ALT
Hepatocyte damage - ALT more sensitive
2AST:1ALT = ETOH
1>AST:1ALT = Viral
Elevated GGT
Chronic ETOH use (confirms hepatic source of ALP)
Gilbert’s
Reduced conjugation of bili.
Biochem normal apart from inc bili
Ax - autoimmune antiglycoprotein IIb-IIIa Ab leading to thrombocytopenia (chronic)/ virus coated plts (acute)
Px - plt disorder so superficial bleeding (gums), low plts, proceeds infx, in children (acute, chronic differs slightly)
Mx - self limiting (acute)/steroids + splenectomy (chronic)
Autoimmune thrombocytopenic purpura
Ax - FVIII deficiency, X-linked recessive,
Px - prolonged bleeding after surgery
Mx - FVIII concentrates lifelong
Haemophilia A
Ax - FIX def, X-linked recessive
Px - like Haemophilia A
Mx - FIX concentrates lifelong
Haemophilia B/Christmas disease
Ax - plt microthrombi causing MAHA
Px - Renal failure, low plts, fever, neuor signs (headache, stroke)
Mx - plasma exchange
(Idiopathic) Thrombotic thrombocytopenic purpura
Ax - E.coli toxin leads to RBC damage
Px - D, renal failure, children and elfderly
Haemolytic uraemic syndrome (HUS)
Ax - widespread activation of coagulation due to malignancy/sepsis/trauma/placental abruption/amniotic fluid embolus
Px - Clotting F’s + Plts consumed=bleeding, low Plts, low fibrinogen, renal failure, shock
Disseminated intravascular coagulation (DIC)
Ax - vWF def, autosomal dominant, (low production of FVIII)
Px - Gum bleeding, epistaxis, prolonged bleeding after surgery
Von Willebrand disease
Ax - autosomal dominant
Px - telangiectasia on skin and mucous membranes
Osler-Webber-Rendu/hereditary haemorrhagic telangiectasia
Rheumatoid Arthritis AutoAb
Anti-CCP, rheumatoid F
Autoimmune hepatitis autoAb
Anti-smooth muscle, anti-liver kidney microsomal-1 (anti-LKM1), anti-soluble liver antigen (anti-SLA)
Dermatomyositis autoAb
Anti-Jo1
Px - heliotrope rash around eyes, Gottron’s papules, proximal limb weakness
Systemic scleroderma/CREST syndrome
Ax - anti-centromere Ab
Px - Calcinosis, Reynaud’s, Oesophageal dysmotility, Sclerodactyly, Telangectasia
Diffuse cutaneous scleroderma autoAb
Anti-topoisomerase
Px - similar to CREST but more aggressive
Churg-Strauss syndrome/Eosinophilic granulomatosis with polyangiitis
pANCA
SLE
Ax - anti-dsDNA
Pernicious anaemia
Ax - anti-parietal cell Abs
Graves
Ax - anti-TSH Abs
Coeliac’s autoAb
anti-TTG, anti-endomysial Abs
Myasthenia Gravis AutoAb
Anti-Ach receptor
Primary biliary cirrhosis AutoAb
Anti-mitochondrial Ab
T1DM AutoAb
Anti-glutamate decarboxylase, Anti-pancreatic beta cells
Wegener’s Granulomatosis/Granulomatosis with PolyAngitis (GPA)
c-ANCA
saddle shaped nose, epistaxis, haemoptysis, haematuria, glomerulonephritis
Chlamydia trachomatis
Grm -ve obligate
Px:
Chlamydiosis - dysparenuia, dysuria, vaginal/penile discharge
Lymphogranuloma venerum - painless papule/ulcer, LA
Treponema pallidum
Syphilis
primary - painless genital ulcer
Secondary - bacteriaemic, rash, LA
Tertiary - multiple organs, neuro signs, pupils
Haemophlus ducreyi
Grm -ve coccobacillus, cultured on chocolate agar
Px -tropical ulcer diseas, painful genital ulcer
Neiserria gonorrhoeae
Grm -ve diplococcus
Px - urethritis, dysuria, purulent discharge
Thayer-Martin VCN medium
Bacterial vaginosis
Ax - bacterial imbalance
Px - fishy smelling, white cream discharge
Ix - pH >4.5, clue cells
Trichomonas vaginalis
flagellated protozoan
Ix - wet prep microscopy
Klebsiella granulomatis
Grm +ve rod
Px - donovanosis, ulcerating STI
Ix - giemsa stain=donovan bodies
Herpes simplex virus 2
Px - genital herpes, fluid filled painful blisters
Addison’s disease
Def - Adrenal insufficiency
Px - fatigue, orthostatic hypotension, hyponatraemia, hyperkalaemia
Ix - synACTHen test
Conn’s syndrome
Def: primary hyperaldosteronism
Px - HTN, hypernatraemia, hypokalaemia
Prolactinoma
Def: most prevalent pituitary tumour
Px - amenorrhoea, galactorrhoe, gynaecomastia
Grave’s
Def: TSH receptor Abs overproduction
Kallman’s
Def: hypogonadotrophic hypogonadism
FV leiden
Def: FV less easily broken down by protein c = hypercoagulable
Anti phospholipid syndrome
Autoimmune: anti-cardiolipin Abs, lupus anticoagulant
Buerger’s disease
Vasculitis
Px - Corkscrew angiogram
Protein S deficiency
Imparied degradation of FVa + VIIIa
Protein S is an anticoagulant that break down FVa + FVIIIa
Antithrombin deficiency
Antithrombin inhibits FIIa (thrombin) and FXa
Sjorgren’s syndrome
Anti-ro, anti-la present in 50%
Def: destruction of the epithelial cells of the exocrine glands
Px - dry eyes/mouth, parotid swelling, arthralgia, myalgia
Amoxicillin
Beta-lactam Abx
Mild community aqc pneumonia
Flucloxacillin
Beta-lactam Abx
S. Aureus
Trimethoprim
Folate metabolism inhibitor
Uncomplicated UTI’s
SE: megaloblastic anaemia
Vancomycin
Glycopeptide Abx inhiits cell wall synthesis
MRSA
Grm +ve
SE’s need to be monitored
Cefotaxime
3rd gen cephalosporin
N.Men/Bacterial meningitis
Doxycycline
Tetracycline (30s protein synthesis)
Chlamydia + gonorrhoea, COPD exacerbation
Co-amoxiclav
Amox and clavulinic acid (beta-lactamase inhibitor)
Severe community aqc pneumonia, nosocomial UTI
Cirrhosis Histo
Fibrosis and nodules
Hameochromatosis
Def: autosomal recessive condition due to HFE mutation causing inc Fe
Ix - Perl’s prussian blue stain
Hepatocellular carcinoma
Most common primary liver malignancy, commonly secondary to cirrhosis
Aflatoxin
Pagets biochem
Ca: N PTH: N ALP: Inc PO4: N VitD: N
Primary hyperparathyroidism
Ca: Inc PTH: Inc/N ALP: Inc/N PO4: Dec VitD: N
Osteomalacia
Ca: Dec PTH: Inc ALP: Inc PO4: Dec VitD: Dec
Primary hypoparathyroidism
Ca: Dec PTH: Dec ALP: Dec/N PO4: Inc VitD: N
Graft vs host disease
Ax - transfer of donor lymphocytes in immsupressed
Px - D, macpap rash, skin necrosis
Transfusion related lung injury
w/in 6hrs
px - dry cough dyspnoea and fever
Immediate haemolytic transfusion reaction
Ax - ABO incompatibility
Px - Abdo pain, loin pain, vomiting, flushing, HbUria
Goodpasture’s
Type IV collagen T2 hypersensitivity reaction
Px - cough, haemoptysis, HbUria
Hepatitis B
dsDNA virus prevelant in sub-Saharan Africa
IP 2-6mnths Acute<6 mnths
20% become chronic
Hepatitis C
ssRNA
80% become chronic
EBV
Associated with glandular fever/infectious mononucleosis
Monospot test+ve, atypical lymphocytes
Influenza
Binds to sialic acid receptor
Chronic myeloid leukaemia
Def: Myeloproliferative disorder
Epid: 40-60
Ax - Phili chromosome 9;22 = BCR-Abl
Px - often asymptomatic picked up on routine blds, splenomegaly massive
Ix - Ph+ve, BM biopsy shows hypercellula BM
Chronic, accelerated and blast phase
Tx - tyrosine kinase inhibitor, BMT
Hairy cell leukaemia
CLL subtype, B lymphocyte malignancy
Diagnosis - tartrate-resistant acid phosphatase
Px - pancytopenia, HepSplenMeg