Sickle Cell Disease Flashcards

1
Q

How many days do sickle cell RBC have before they hemolyze?

A

10-20 days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

When do symptoms of sickle cell disease present?

A

2-3 months after birth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is vaso-occlusive crisis?

A

Acute pain crisis caused by sickle cell disease Most commonly occurs in the lower back, legs, hips, abdomen and chest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is acute chest syndrome?

A

vaso-occlusive crisis/acute pain crisis that occurs in the chest and is the leading cause of death in sickle cell disease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What types of contraception should be used in sickle cell disease and why?

A

Progestin-only, levonorgestrel intrauterine devices (IUDs) and barrier methods are preferred for contraception
NOT ESTROGEN

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What organ becomes fibrotic and shrinks in size in sickle cell disease?

A

spleen

called functional asplenia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is functional asplenia and what does it cause?

A

decreased or absent spleen function

increases risk of serious infections

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are acute sickle cell disease complications?

A
Acute chest syndrome
Anemia
Cholecystitis
Infection
Multiorgan failure
Priapism
Spleen sequestration
Stroke
Vaso-occlusive crisis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the chronic sickle cell disease complications?

A
Avascular necrosis
Leg ulcers
Gallstones
Pain
Pregnancy complications
Pulmonary hypertension
Renal impairment 
Retinopathy
Recurrent priapism
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

When to give blood transfusions for sickle cell anemia

A

After stroke, acute chest syndrome, and severe anemia

Do not push Hgb >10

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is one adverse outcome with monthly blood transfusions for sickle cell anemia

A

Iron overload

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the only cure for sickle cell disease?

A

bone marrow transplantation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What drug classes are used in sickle cell disease?

A

Immunizations, antibiotics, analgesics, hydroxyurea or L-glutamine, and chelation therapy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What vaccinations should patients with sickle cell disease get?

A
Haemophilus influenzae type B
Pneumococcal conjugate (PCV13, prevnar)
Meningococcal conjugate plus boosters
Meningococcal serogroup B
Pneumococcal polysaccharide (PPSV23, Pneumovax23)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Infants with sickle cell disease should be treated with what antibiotic and for how long?

A

Penicillin BID until the age of 5 years old

If spleen is removed continue PCN indefinitely

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What analgesics are used for patients with pain?

A

NSAIDs, APAP, can be opioids or PCA

17
Q

Hydroxyurea MOA

A

stimulates production of HgbF

18
Q

How does hydroxyurea benefit patients with sickle cell disease?

A

reduces frequency of acute pain crises, episodes of acute chest syndrome and the need for blood transfusions

19
Q

When to use hydroxyurea in patients with sickle cell disease

A

Adults with 3 or more severe pain crises in one year or with severe or recurrent acute chest syndrome, chronic symptomatic anemia

20
Q

Hydroxyurea BBW, warning, SE

A

BBW: myelosuppression, malignancy (leukemia, skin cancer)
Warnings: fetal toxicity, avoid live vaccines
SE: increased LFTs, uric acid, BUN and SCr, mouth ulcers, N/V/D, alopecia, hyperpigmentation

21
Q

What needs to be supplemented during hydroxyurea use?

A

Folic acid to prevent macrocytosis

22
Q

How long to use contraception after using hydroxyurea?

A

6 months for females

12 months for males

23
Q

L-glutamine MOA

A

Amino acid that reduces acute complications of SCD

MOA not fully known but might decrease oxidative stress

24
Q

L-glutamine side effects

A

constipation, flatulence, nausea, HA, pain, cough

Oral powder

25
Q

Voxelotor MOA

A

Inhibits hemoglobin S (HbS) polymerization which is the cause of SCD

26
Q

Voxelotor SE

A

HA, fatigue, abdominal pain, diarrhea, nausea

27
Q

Crinalizumab MOA

A

Binds to and inhibits P-selectin, which is involved in adhesion of sickled erythrocyte to vessels

28
Q

What medications are used for iron chelation treatment

A

Deferasirox and deferiprone

Oral