Blood pathologies Flashcards
Anaemia - a deficiency of what
red blood cells/faulty or in the haemoglobin content
general signs/symptoms anaemia
tachycardia, thin pulse palpitations shortness of breath fainting fatigue irritability pallor yellow eyes muscular weakness changed stool colour hypotension enlarged spleen
7 types anaemia
sickle cell thalessanaemia iron deficiency B12/B9 deficiency Megablastic Haemolysis Pernicious anaemia
Iron deficiency anaemia also known as
hypochromic anaemia
Less haemoglobin in the blood causes erythrocytes to appear
hypochromic - paler
microcytic - smaller
causes hypochromic anaemia
diet/malabsorption of iron chronic blood loss peptic ulcers prolonged menstruation intestinal ulceration hookworm infection pregnancy childbirth
signs symptoms hypo chromic anaemia
general anaemia symptoms plus brittle hair spoon shaped nails inflammation mouth/tongue menstrual irregularities delayed healing
complementary treatment hypo chromic anaemia
cause!
iron rich food - dark green veg, beetroot, meat
iron supplements
describe the erythrocytes in megaloblastic anaemia
large
immature
dysfunctional
what two nutrients are required for DNA synthesis
B12, folic acid
what happens to cells if there is a deficiency of B12 & folic acid
cells cannot mature & divide but they can grow
causes megaloblastic anaemia
diet deficient in folic acid or b12 or both lack of intrinsic factor gastrectomy chronic gastritis bariatric surgery stomach tumours coeliac disease excessive alcohol chemotherapy
most common form of vit B12 deficiency anaemia
pernicious anaemia
what type of disease is pernicious anaemia
auto immune
what happens in pernicious anaemia
antibodies destroy instrinsic factor (IF) and parietal cells in the stomach
why does B12 need intrinsic factor ?
It activates it in the body
IF made in stomach
why gastric bands a bad idea
In megaloblastic anaemia how is b12 deficiency anaemia different to B9 defic. anaemia
B9 identical to B12 but NO NEUROLOGICAL DAMAGE
when does your need for B9 increase
pregnancy
treatment magaloblastic B9 deficiency anaemia
folate supplementation - green plants
could pernicious be the cause of megaloblastic anamia
yes
to avoid anaemia always check the following 3 supplement are in your diet
B12 9
Iron
a lack of B12 can lead to what problems
nerve neurological
megaloblastic anaemia vit B12 def. symptoms
general anaemia symptoms plus big red sore shiny tongue, cuts side of mouth digestive discomfort nausea diarrhoea loss of coordination
complications B12 def megaloblastic anaemia
Nerve degeneration - not B9
Ulceration of tongue
treatment B12 def megaloblastic anaemia
B12 injections
hypoplastic & aplastic anaemia mean
no or few erythrocytes in the bone marrow
causes hypoplastic/aplastic anaemia
bone marrow failure - drugs, chemicals, radiation, kidney disease, cancer, hepatitis
symptoms hypoplastic/aplastic anaemia
pancytopenia
general anaemia symptoms
multiple infections - low white blood cell count
easy bleeding - low thrombocyte count
complications hypoplastic/aplastic anaemia
congestive heart failure
treatment hypo plastic/aplastic anaemia -
cause
blood transfusion
bone marrow transplant
what are haemolytic anaemias
anaemia resulting from EXCESSIVE BREAKDOWN of RBCs
causes haemolytic anaemias
genetic (sickle cell, thalassaemia) drugs, chemicals, radiation malaria autoimmune incompatibility between mother/child