DPD Deck - MISC Flashcards
How do you identify Microangiopathic hemolytic anemia?
The presence of schistocytes on the blood film
What occurs during DIC?
In disseminated intravascular coagulation
Systemic activation of the coagulation pathway
This leads to widespread generation of fibrin and deposition in blood vessels
This leads to thrombosis and multiorgan failure
As a result, platelets and coagulation factors are used up
Fibrin degradation produced and D-dimer are produced to break up the clots
What are the lab findings in DIC?
DECREASED Platelets and Fibrinogen
INCREASED Fibrin degradation products and D-dimer
PROLONGER Prothrombin time and Activated partial thromboplastin time
Name the 3 features of HUS
Haemolysis occurs results in decreased haemoglobin and increased bilirubin
Decreased platelets
Uraemia
What is the classic traid of HUS?
Microangiopathic hemolytic anemia
AKI
Thrombocytopenia
What are the features of Thrombotic Thrombocytic Purpura
Purpura Fever Fluctuating cerebral dysfunction AKI Microangiopathic haemolytic anemia
In a patient who had microangiopathic haemolytic anaemia what would you expect to see in a blood test?
High bilirubin
Low haemoglobin
High creatinine
What are the two types causes of haemolytic anemia?
Hereditary and Acquired
List the hereditary causes of haemolytic anemia?
- RBC membrane problems: HEREDITARY SPHEROCYTOSIS
- Enzyme deficiency: G6PD deficiency
- Haemoglobinopathies: Sickle cell, thalassemia
List the acquired causes of haemolytic anemia?
MAID:
Microangiopathic haemolytic anemia
Autoimmune
Infection
Drugs
What is the framework one must use when dealing with a patient who is HYPONATRAEMIC?
Think about blood volume, a hyponatraemic patient will be either:
HYPOVOLAEMIC
EUVOLAEMIC
HYPERVOLAEMIC
What do all patients with Hyponatraemia have in common?
They have excess water due to EXCESS ADH
What are the HYPOVOAEMIC causes of hyponatraemia and how would you test for it?
Diarrhoea
Vomitting
Diuretics
DETECT BY: Clinically hypovolaemic, low urine sodium (because kidneys hold onto salt)
What are the EUVOLAEMIC causes of hyponatraemia and how would you test for it?
E for Endocrine causes
Hypothyroidsim - Thyroid Function Tests
Adrenal insufficiency (Addison’s) - Short Synacthen test
SIADH - LOW plasma osmolality, HIGH urine osmolality
What are the HYPERVOLAEMIC causes of hyponatraemia and how would you test for it?
Cardiac failure
Cirrhosis
Nephrotic Syndrome
Signs of fluid overload
Low urine sodium?