Passmedicine Flashcards
Treatment for chronic myeloid leukaemia?
Imatinib
Treatment for chronic lymphocytic leukaemia (requiring treatment)
Fludarabine, cyclophosphamide and rituximab (FCR)
Which drugs could cause thrombocytopenia?
Heparin Sodium valproate Thiazides Valproic acid Quinidine
Which drugs could cause pancreatitis?
Corticosteroids
Sodium valproate
Thiazides
Valproic acid
What condition would you see smudge/smear cells?
Chronic lymphocytic leukaemia
How would Von Willebrand’s disease present?
- Bleeding problems
- Normal platelets
- Raised bleeding time
- Slightly raised APTT
Which drug can cause nasal congestion?
Sildenafil
Which drugs are associated with hyperkalaemia?
ACE inhibitors Spironolactone ARBs Heparin Ciclosporin Amiloride Succinylcholine
What is the underlying pathology of polycythemia rubra vera?
Mutation in JAK2
What is the underlying pathology in lead poisoning?
Defective ferratochelatase and ALA dehdratase function
Age group affected in multiple myeloma?
Age 60-70
Why do you get hypercalcemia in myeloma?
Primarily this is due to increased osteoclastic bon resorption caused by local cytokines (e.g. IL-1. TNF) released by the myeloma cells
Much less common contributing factors: impaired renal function, increased renal tubular calcium reabsorption and elevated PTH-rP levels)
Treatment for restless legs syndrome
Ropinirole
Treatment for polycythemia rubra vera
Venesection
Which condition would you find Auer rods in?
Acute myeloid leukaemia
Features of Cryoglobulinaemia?
Purpuric rash
Hepatitis C positive
HER2/neu receptor antagonist
Imatinib
Inhibitor of the tyrosine kinase associated with the BCR-ABL defect
Imatinib
Which drugs can cause osteoporosis?
Corticosteroids
Heparin
Pioglitazone
Which drugs could cause epistaxis?
Isotretinoin
Warfarin
Hereditary haemorrhagic telangiectasia inheritance pattern?
Autosomal dominant
Features of hereditary haemorrhagic telangiectasia?
Epistaxis
Spider Naevi
Arteriovenous malformations
“A 60 year old woman presents with cold peripheries. Investigations show a normocytic anaemia and a positive direct antiglobulin test”
Autoimmune haemolytic anaemia
“A 15 year old Greek boy develops pallor and jaundice after having a lower respiratory tract infection. He has a history of neonatal jaundice. The blood film shows Heinz bodies”
G6PD deficiency
G6PD inheritence
X-linked recessive
-so you’re going to see it in males
Why is a decreased level of G6PD bad?
It means there will be a reduced level of glutathione, and this increases red cell susceptibility to oxidative stress
Diagnostic test for hereditary spherocyosis?
Osmotic fragility test
Which stupid food can precipitate a crisis in G6PD deficiency?
Broad beans
How do you diagnose G6PD deficiency?
G6PD enzyme assay
Drugs which can cause haemolysis?
Anti-malarials: primaquine
Ciprofloxacin
Sulph-group drugs: sulphonamides, sulphasalazine, sulfonylureas
What type of haemolysis in G6PD deficiency?
Intravascular
What type of haemolysis in hereditary spherocytosis?
Extravascular (so spleen etc)
How does standard heparin work?
Activates anti-thrombin III
Forms a complex that inhibits thrombin, factors Xa, IXa, XIa and XIIa
How does LMWH work?
Activates anti-thrombin III.
Forms a complex that inhibits factor Xa
How do you monitor standard heparin?
APTT
How do you monitor LMWH?
Anti-factor Xa (although routine monitoring is not required)
Why can heparin and LMWH cause hyperkalaemia?
It is thought to be due to inhibition of aldosterone secretion
Causes of normocytic anaemia?
Anaemia of chronic disease
Chronic kidney disease
Aplastic anaemia
Haemolytic anaemia
Activated protein C resistance
Factor V leiden
C1-1NH deficiency
Hereditary angioedmea
What is tumour lysis syndrome associated with?
Burkitt’s lymphoma (treated with chemotherapy)
What is hypogammaglobulinaemia associated with?
Chronic lymphocytic leukaemia
Macrocytic (normoblastic)
Reticulocytosis
Macrocytic (megaloblastic)
Vitamin B12 deficiency
“a 10 year old child with a history of neonatal jaundice develops pallor and jaundice after an upper respiratory tract infection associated with erythematous cheeks. Splenomegaly is noted on examination”
Hereditary spherocytosis
(the clue is in the splenomegaly!! –> hereditary spherocytosis = extravascular haemolysis = the spleen is going to be working overtime = splenomegaly! Although you can sometimes get splenomegaly with G6PD)
Management of hereditary spherocytosis?
Folate replacement
Splenectomy
Which medication can cause a slate-grey appearance?
Amiodarone
Which medication can cause skin necrosis?
Warfarin
Factors that may potentiate warfarin?
- Liver disease
- P450 enzyme inhibitors (e.g. amiodarone, ciprofloxacin)
- Cranberry juice
- Drugs which displace warfarin from plasma alubmin (e.g. NSAIDS)
- Inhibit platelet function: NSAIDS
Dark coloured urine, haemolytic anaemia and thrombosis are features of which disease?
Paroxysmal nocturnal haemoglobulinuria
Treatment of essential thrombocytosis?
Hydroxyuria
The philadelphia chromosome is present in more than 95% of people with this condition?
Chronic myeloid leukaemia
Imatinib method of action
Inhibitor of the tyrosine kinase associated with BCR-ABL defect
-Very high response rate in chronic phase CML
This type of hodgkins lymphoma is associated with lacunar cells
Nodular sclerosing hodgkins lymphoma (the most common type)
This condition is characterised by the presence of Reed-Sternberg cells
Hodgkins lymphoma
Hodgkins lymphoma with the best prognosis
Lymphocyte predominant
Hodgkins lymphoma with the worst prognosis
Lymphocyte depletes
Hodgkins lymphoma symptoms which imply poor prognosis
Weight loss more than 10% in the last 6 months
Fever greater than 38 degrees C
Night sweats
Common cause of tumour lysis syndrome
Burkitts lymphoma
What is felty’s syndrome?
Splenomegaly and neutropenia in a patient with Rheumatoid arthritis
t (9,22)
Philadelphia chromosome:
Present in >95% of patients with CML
-also a poor prognostic factor in ALL
t(15,17)
Seen in acute promyelocytic leukaemia
t(8,14)
Burkitt’s lymphoma
t(11,14)
Mantle cell lymphoma
How can you reverse heparin?
Protamine sulphate (although this only partially reverses effects of LMWH)
How do you monitor heparin?
APTT
How could you monitor LMWH?
Anti-factor Xa (although routine monitoring is not required)
How do you give heparin?
IV
Treatment for DVT
LMWH or fondaparinux should be given initially after a DVT is diagnosed
-a vitamin K antagonist (e.g. warfarin) should be given within 24 hours of the diagnosis
How long should you continue LMWH/fondaparinux after DVT?
Continue for at least 5 days of until the INR is 2.0 or above for at least 24 hours