Transplant Flashcards

1
Q

Allograft

A

Transplant from one individual to another

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2
Q

Isograft

A

Transplant from genetically identical donor

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3
Q

Autograft

A

Transplant from same patient (e.g. skin grafting)

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4
Q

Induction Immunosuppression

A
  • Prevents acute rejection in early-post transplant
  • Basiliximab is commonly used for induction but CANNOT be used in tx
  • Antithymycyte globulin can be used for patients with higher risk for rejection and can be used as induction or treatment
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5
Q

Atgem/Thymoglobulin

A
  • Antithymocyte globulin (equine/rabbit respectively)
  • Binds to T-cells and interferes with their function (depletes mature and immature T-cells)
  • Can be used for induction and tx
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6
Q

Antithymocyte Globulin Information

A
  • Box Warning: anaphylaxis
  • SE: infusion-related rxns (fever, chills, pruritis, decreased BP)
  • Premedicate with benadryl, APAP, and steroids to lessen infusion-related rxns
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7
Q

Basiliximab

A
  • Interleukin-2 antagonist; monoclonal antibody that inhibits IL-2 on T-cells to prevent rejection
  • Doesn’t deplete immature T-cells, therefore can’t be used for treatment
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8
Q

Maintenance Immunosuppression

A

Combination of:

  • Calcineurin inhibitor (Tacrolimus = first-line)
  • Antiproliferative agent (Mycophenolate = first line, mostly)
  • +/- Steroids (usually prednisone) - not needed in low immunologic risk pts
  • *Suppressing mechanisms via different classes helps lower toxicity and reduce risk of rejection**
  • Take ideally on empty stomach or be consistent about what you eat with meds
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9
Q

Short-term Steroid SE

A
  • Fluid Retention
  • Upset stomach
  • Emotional instability
  • Insomnia
  • Increased appetite
  • Weight gain
  • Acute risk in BG and BP
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10
Q

Long-term Steroid SE

A
  • Adrenal suppression/Cushing’s syndrome
  • Impaired wound healing
  • Increased BP
  • Diabetes
  • Acne
  • Osteoporosis
  • Impaired growth in children
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11
Q

CellCept

A
  • Mycophenolate Mofetil
  • Antiproliferative agent, potential adjuvate to CNI
  • Stable in D5W only
  • Myfortic = mycophenolate acid (DR capsule, EC to help decrease diarrhea)
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12
Q

Mycophenolate Information

A
  • Box Warning: Increased risk of infection, lymphomas, skin malignancies, and congenital malformations/spontaneous abortion
  • SE: diarrhea, GI upset
  • Two formulations are NOT interchangeable
  • Decreases efficacy of oral contraceptives
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13
Q

Imuran

A
  • Azathioprine (also Azasan)
  • Antiproliferative agent, potential adjuvate to CNI
  • Warning: patients with TPMT deficiency (increases risk for myelosuppression - box warning/SE)
  • Avoid use with xanthine oxidase inhibitors (allopurinol, febuxostat)
  • SE: GI upset
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14
Q

Prograf

A
  • Tacrolimus
  • Calcineurin inhibitor (inhibits T-cell activation)
  • Many formulations available
  • Must be given exactly Q12H - draw trough right before next dose
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15
Q

Tacrolimus Information

A
  • Box warnings: increases susceptibility to infection and lymphomas
  • SE: increase BP, nephrotoxicity, increased BG, neurotoxicity, hyperkalemia, hyperlipidemia, QT prolongation
  • Monitor: trough level, electrolyte (K/Mg/Phos), renal function, LFTs, BP, BG, and lipids
  • Don’t interchange XL and IR formulations
  • IV must be non-PVC bag
  • CYP3A4 and Pg substrate (MANY DDI)
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16
Q

Gengraf/Neoral/Sandimmune

A
  • Cyclosporine
  • Calcineurin inhibitor
  • First 2 brands = modified, last is non-modified (NOT interchangeable)
  • Restasis is used for eye drops
17
Q

Cyclosporine Information

A
  • Box Warning: renal impairment, increased risk of lymphoma and malignancies, infection, increase BP
  • Don’t switch between modified and non-modified, modified has greater bioavailability
  • SE: Increase BP, nephropathy, Hyper-K/Hypo-Mg, hirsutism, gingival hyperplasia, edema**, increase BG, neurotoxicity, and QT prolongation
  • Monitor: trough, serum electrolytes, renal function, BP/BG, and lipids
  • MANY DDI: CYP3A4i and CYP3A4/Pg substrate
  • Don’t give in plastic or Styrofoam cup
18
Q

Everolimus

A
  • mTOR kinase inhibitor, potential adjuvate to CNI
  • Inhibits T-cell activation and proliferation
  • Warning: Hyperlipidemia**
  • SE: peripheral edema, increased BP, don’t use within 30 days of transplant
  • Monitor: trough levels
  • Numerous DDI: CYP3A4 substrate (decrease cyclosporine dose)
19
Q

Sirolimus

A
  • mTOR kinase inhibitor, potential adjuvate to CNI
  • Inhibits T-cell activation and proliferation
  • Warning: impaired wound healing and hyperlipidemia**
  • SE: Irreversible pneumonitis/bronchitis/cough (D/C if develops), increase BG, peripheral edema
  • NOT used in liver/lung transplant
20
Q

Belatacept

A
  • Binds to CD80 and CD86 to block T-cell costimulation and inflammatory mediator production
  • Potential adjuvate to CNI
  • Box warning: increased risk of post-transplant lymphoproliferative disorder (PTLD), use in EBV seropositive patients ONLY
  • Warning: treat latent TB before use
21
Q

Caution w/ additive nephrotoxic drugs in…

A
  • Tacrolimus
  • Cyclosporine
  • *CNIs - Monitor renal fxn**
22
Q

Caution w/ additive hyperglycemia drugs in…

A
  • Tacrolimus**
  • Cyclosporine**
  • Steroids**
  • mTORi
  • *Monitor for new-onset diabetes**
23
Q

Caution w/ additive hyperlipidemia drugs in…

A
  • mTORi - worst!
  • Steroids
  • Cyclosporine
  • *Monitor lipid parameters**
24
Q

Caution w/ additive hypertensive drugs in…

A
  • Steroids
  • Cyclosporine
  • Tacrolimus
  • *Monitor for HTN**
25
Q

Acute Rejection

A
  • Arises from T-cell (cell-mediated) or B-cell related mechanisms (humoral or antibody)
  • Biopsy is necessary to determine type of rejection and pick tx
  • Initial approach is always high-dose steroids and increased maintenance medications
26
Q

Vaccines

A
  • Influenza (inactivated), annually
  • PCV13 if never received and 19 yo+, then PPSV23 at least 8 weeks later (potentially PPSV23 Q5y)
  • Varicella: administer before transplant and give to all close-contacts, if rash develops quarantine unless you are the transplant patient, then see provider right away
27
Q

Labs for Preventing Graft Rejection

A

Need to crossmatch:

  • HLA
  • ABO

PRA: panel reactive antibody, how sensitized patient’s body is (likelihood they would attack transplant)