B Flashcards
Which supplement is advised to take to a patient with sickle cell disease?
Folate (folic acid)
Sickle cell disease is a genetic condition where red blood cells become rigid and shaped like sickles, or crescent moons, instead of round. This abnormal shape can cause blockages in blood vessels, leading to pain, organ damage, and other health problems.
Folic acid is advised for patients with sickle cell disease because they often have an increased rate of red blood cell turnover, leading to a higher need for folic acid. Folic acid helps in the production of red blood cells, which can be depleted due to the condition.
In sickle cell disease, red blood cells are fragile and can break down more easily than normal. This increased fragility leads to a higher rate of red blood cell turnover, where the body needs to produce new red blood cells more frequently to replace the ones that are lost or damaged.
What drug can reduce the frequency of sickle cell crises
Hydroxycarbamide
What are the individuals with G6PD deficiency susceptible to developing what?
Acute haemolytic anaemia
“G6PD,” which stands for glucose-6-phosphate dehydrogenase. It’s an enzyme that plays a crucial role in protecting red blood cells from oxidative stress. When deficient, it can lead to a condition called G6PD deficiency, which can cause acute hemolytic anemia under certain conditions.
Which foods can cause acute haemolytic anaemia?
Fava beans, broad beans, fresh fava beans
State the drugs with definite risk of haemolysis in most G6PD-deficient individuals?
These drugs can induce oxidative stress in red blood cells, leading to the destruction of red blood cells in individuals with G6PD deficiency
Antimalarial drugs like fluoroquinolones
Rasburicase
Sulfonamide antibiotics/ Sulfones such as sulfamethoxazole (part of Bactrim or
Septra)
Nitrofurantoin, an antibiotic commonly used for urinary tract infections
Dapsone, which is used to treat leprosy, dermatitis herpetiformis, and certain other conditions
What is used to treat anemia associated with erythropoietin deficiency in chronic renal failure?
Epoetin’s
In chronic renal failure, the kidneys are unable to produce enough erythropoietin, which is a hormone responsible for stimulating the production of red blood cells in the bone marrow. This deficiency in erythropoietin leads to a condition called anemia of chronic kidney disease (CKD)
Which erythropoietin is used to treat anemia in preterm neonates of low-birth weight?
Epoetin beta
Which erythropoietin has a longer half-life and can be administered less frequently?
Darbepoetin
State the MHRA warning for epoetin’s?
Steven-johns syndrome
toxic epidermal necrolysis
Steven-Johnson syndrome is a severe skin reaction that typically occurs as a reaction to medication or an infection. It causes painful blisters, skin peeling, and can affect mucous membranes, including those in the mouth and eyes. It’s considered a medical emergency and requires immediate attention.
Toxic epidermal necrolysis (TEN) is a severe skin condition where the top layer of the skin separates from the lower layers due to a reaction to medication or infection. It causes widespread blistering and skin shedding, often accompanied by fever and other systemic symptoms. It’s a medical emergency requiring urgent treatment.
Advise patients of symptoms of severe skin reactions, stop treatment if:
They develop widespread rash / blistering
What are the symptoms of iron deficiency anaemia?
Lethargy
shortness of breath
heart palpitations
pale skin
State the conditions in which prophylaxis is required with iron?
Malabsorption
gastrectomy
menorrhagia
haemodialysis
pregnancy
premature infants
What patient counselling advice do you give to patients taking iron?
Take with or after food, and take with glass of orange juice to aid absorption
State the MHRA advice for intravenous iron?
Caution with every IV dose
Monitor for 30 mins after each injection
High risk in allergies
Avoid in pregnancy, especially first trimester
Define megaloblastic anaemia:
Most result from a lack of either vitamin B12 or folate
Megaloblastic anemia is a type of anemia characterized by the presence of unusually large and immature red blood cells called megaloblasts in the bone marrow. This condition is typically caused by a deficiency in vitamin B12 or folic acid, which are essential for normal red blood cell production. Without adequate levels of these vitamins, red blood cells fail to mature properly,