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USMLE1 HemeOnc Pharm
N/A
56
Medical
Graduate
04/15/2011

Additional Medical Flashcards

 


 

Cards

Term
Heparin
Mech
Use
tox
Definition
Cofactor for ATIII. Reduces thrombin and Xa.
Immediate anticoagulation. OK during pregnancy. Monitor with aPTT.
Bleeding, HIT, osteoporosis, drug-drug interactions. Protamine sulfate for antidote.
Term
Enoxaparin
Mech
Use
Definition
Low molecular weight heparin. Acts more on Xa, better bioavailability, 2-4 longer half-life. Less HIT risk. No laboratory monitoring needed. No antidote.
Term
Lepirudin
Mech
Use
Definition
Hirudin derivative, directly inhibits thrombin.
Alternative to hepain, use in patients with HIT.
Term
Bivalirudin
Mech
Use
Definition
Hirudin derivative, directly inhibits thrombin.
Alternative to hepain, use in patients with HIT.
Term
Warfarin
Mech
Use
Tox
Definition
Interferes with gamma-carboxylation of II, VII, IX, X, C, S (vitamin K dependent factors). Long half-life, P450 metabolized, plasma protein binding. Monitor with PT.
Use for chronic anticoagulation, NOT in pregnant women (crosses placenta).
Bleeding, teratogen, skin/tissue necrosis, DDIs. Vitamin K for OD, FFP for rapid reversal.
Term
Streptokinase
Mech
Use
Tox
Definition
Thrombolytic; aids conversion of plasminogen to plasmin, which cleaves thrombin and fibrin.
Early MI, stroke.
Bleeding - intracranial, recent surg, severe HTN. Give aminocaproic acid or tranexamic acid: inhibits plasminogen activation.
Term
Urokinase
Mech
Use
Tox
Definition
Thrombolytic; aids conversion of plasminogen to plasmin, which cleaves thrombin and fibrin.
Early MI, stroke.
Bleeding - intracranial, recent surg, severe HTN. Give aminocaproic acid or tranexamic acid: inhibits plasminogen activation.
Term
tPA (alteplase)
mech
use
tox
Definition
Thrombolytic; aids conversion of plasminogen to plasmin, which cleaves thrombin and fibrin.
Early MI, stroke.
Bleeding - intracranial, recent surg, severe HTN. Give aminocaproic acid or tranexamic acid: inhibits plasminogen activation.
Term
APSAC (anistreplase) mech use tox
Definition

= plasminogen + streptokinase

Anisoylated Plasminogen Streptokinase Activator Complex

Thrombolytic; aids conversion of plasminogen to plasmin, which cleaves thrombin and fibrin.

Early MI, stroke.

Bleeding - intracranial, recent surg, severe HTN.

Give aminocaproic acid or tranexamic acid: inhibits plasminogen activation.

Term
Aminocaproic acid
mech
use
Definition
inhibits plasminogen activation
use for reversal of thrombolytics (streptokinase, tPA, urokinase, APSAC)
Term
Tranexamic acid
mech
use
Definition
inhibits plasminogen activation
use for reversal of thrombolytics (streptokinase, tPA, urokinase, APSAC)
Term
Clopidogrel mech use tox
Definition

Irreversibly block ADP receptor on platelets, prevent GpIIb/IIIa expression, less fibrinogen binding.

*P450 activated.

Acute coronary syndrome; coronary stenting. Decreases incidence of thrombotic stoke. Neutropenia, TTP, hemorrhage.

Term
Ticlopidine
mech
use
tox
Definition
Irreversibly block ADP receptor on platelets, prevent GpIIb/IIIa expression, less fibrinogen binding.
Acute coronary syndrome; coronary stenting. Decreases incidence of thrombotic stoke.
Neutropenia, TTP, hemorrhage.
Term
Abciximab
mech
use
tox
Definition
Antibody to GpIIb/IIIa. Prevents aggregation.
Acute coronary syndrome, percutaneous interventions.
Bleeding, thrombocytopenia.
Term
Methotrexate
Mech
Use
Tox
Definition
Folic acid analog, inhibits DHFR.
Leukemias, lymphomas, choriocarcinoma, sarcomas. Abortion, ectopic pregnancy, rheumatoid arthritis, psoriasis.
Myelosuppresion (leucovorin rescue). Macrovesicular liver steatosis. Mucositis. Teratogenic.
Term
5-fluorouracil (5-FU)
mech
use
tox
Definition
Pyrimidine analog. Metabolized to 5F-dUMP. Covalently complexes with folic acid, inhibits thymidylate synthase.
Colon cancer, other solid tumors, topical for basal cell carcinoma. Synergy with methotrexate.
Myelosuppresion (no leucovorin rescue! Rescue with thymidine). Photosensitivity.
Term
6-mercaptopurine (6-MP)
mech
use
tox
Definition
Purine (thiol) analog, inhibit purine synthesis.
Activated by HGPRT.
Leukemias, lymphomas.
Bone marrow, GI, liver toxicity. Metabolized by xanthine oxidase, increased toxicity with allopurinol.
Term
6-thioguanine (6-TG)
mech
use
tox
Definition
Purine analog, inhibit purine synthesis. Activated by HGPRT.
ALL
Myelosuppression, liver toxicity. Metabolized by xanthine oxidase, toxicity with allopurinol.
Term
Cytarabine (ara-C)
mech
use
tox
Definition
Pyrimidine analog (cytosine arabinoside). Inhibits DNA polymerase.
AML, ALL, NHL.
Leukopenia, thrombocytopenia, megaloblastic anemia.
Term
Dactinomycin
mech
use
tox
Definition
Intercalates in DNA, generates free radicals.
Wilms tumor, Ewings sarcoma, rhabdomyosarcoma. CHILDHOOD TUMORS.
Myelosuppression.
Term
Doxorubicin (Adriamycin)
mech
use
tox
Definition
Generates free radicals. Intercalates DNA. Inhibits topoisomerase II.
Hodgkins lymphoma, myelomas, sarcomas, solid tumors.
Dilated cardiomyopathy, myelosuppression, alopecia. Extravasation hazard.
Term
Bleomycin
Mech
Use
Tox
Definition
Free radical formation.
Testicular cancer, Hodgkin's lymphoma.
Pulmonary fibrosis, skin changes. *minimal myelosuppression.
Term
Etopside
mech
use
tox
Definition
Inhibits topoisomerase II.
SCLC, prostate, testicular cancer.
Myelosuppression, GI irritation, alopecia.
Term
Topotecan
mech
use
Definition
Inhibits topoisomerase I
Chemotherapy
Term
Inotecan
mech
use
Definition
Inhibits topoisomerase I
chemotherapy
Term
Cyclophosphamide
mech
use
tox
Definition
Alkylating agent. Covalent interstrand DNA crosslink. Requires liver bioactivation.
NHL, breast, ovary. Immunosuppression.
Myelosuppression. Hemorrhagic cystitis, give with MESNA tp prevent.
Term
Ifosfamide
mech
use
tox
Definition
Alkylating agent. Covalent interstrand DNA crosslink. Requires liver bioactivation.
NHL, breast, ovary. Immunosuppression.
Myelosuppression.
Term
Carmustine
mech
use
tox
Definition
Nitrosurea: DNA interstrand crosslinking.
Requires activation; enters CNS.
Brain tumors.
Dizziness, ataxia.
Term
Lomustine
Definition
Nitrosurea: DNA interstrand crosslinking.
Requires activation; enters CNS.
Brain tumors.
Dizziness, ataxia.
Term
Semustine
Definition
Nitrosurea: DNA interstrand crosslinking.
Requires activation; enters CNS.
Brain tumors.
Dizziness, ataxia.
Term
Streptozocin
Definition
Nitrosurea: DNA interstrand crosslinking.
Requires activation; enters CNS.
Brain tumors.
Dizziness, ataxia.
Term
Busulfan
Definition
Alkylates DNA
CML. Pre-BMT ablation.
Pulmonary fibrosis, hyperpigmentation.
Term
Vinchristine
Definition
Microtubule inhibitor. Binds tubulin, M phase cannot continue.
Hodgkins, Wilms, choriocarcinoma.
*Peripheral neurotoxicity (areflexia, peripheral neuritis, paralytic ileus).
Term
Vinblastine
Definition
Microtubule inhibitor. Binds tubulin, M phase cannot continue.
Hodgkins, Wilms, choriocarcinoma.
*Bone marrow suppression.
Term
Paclitaxel and other -taxols
Definition
STABILIZE microtubules, block M-phase.
Ovary, breast.
Myelosuppression, hypersensitivity.
Term
Cisplatin
Definition
Cross-link DNA (C for crosslink)
Test, bladder, ovary, lung
Nephrotoxicity, acoustic nerve damage (can't pee, can't hear a high C)
Use Amifostine to protect from nephrotoxicity, (thiol-based free-radical scavenger), or chloride diuresis (IV saline).
Term
Carboplatin
Definition
Cross-link DNA (C for crosslink)
Test, bladder, ovary, lung
Nephrotoxicity, acoustic nerve damage (can't pee, can't hear a high C)
Use Amifostine to protect from nephrotoxicity, (thiol-based free-radical scavenger), or chloride diuresis (IV normal saline).
Term
Hydroxyurea
Definition
Inhibit ribonucleotide reductase, inhibit DNA synth
melanoma, CML, sickle cell disease (increases HbF)
Myelosuppression, GI upset
Term
Tamoxifen
Definition
Selective Estrogen Receptor Modifier - antagonist in breast, agonist in bone.
Breast cancer, osteoporosis.
May increase endometrial carcinoma risk via partial agonist effects. Hot flashes.
Term
Raloxifene
Definition
Selective Estrogen Receptor Modifier - antagonist in breast, agonist in bone.
Breast cancer, osteoporosis.
Endometrial antagonist, no endometrial carcinoma risk (vs. Tamoxifen)
Term
Trastuzumab
Definition
aka Herceptin
Antibody to HER-2 receptor (erb-B2 gene).
BrCa with HER-2 expression.
Cardiotoxic.
Term
Imatinib
Definition
aka Gleevec
Inhibits bcr-abl (philadelphia chromosome tyr kinase receptor)
CML, GI stromal tumors
Fluid retention
Term
Nilotinib
Definition
aka Gleevec
Inhibits bcr-abl (philadelphia chromosome tyr kinase receptor)
CML, GI stromal tumors
Fluid retention
Term
Rituximab
Definition
Antibody to CD20
NHL, rheumatoid arthritis (with methotrexate)
Term
Celecoxib
Definition
Selective COX-2 inhibitor
Avoids normal NSAID adverse effects of GI ulceration, and inhibited platelet aggregation - purely anti-inflammatory.
However, long-term use linked to increased thrombotic risk, which may be due to decrease production of prostacyclin.
Term
Gardos channel blockers
Definition
Block calcium-dependent potassium channels (Gardos) on RBCs. Prevent cellular dehydration, heme polymerization.
For sickle cell anemia.
Term
Diclofenac
Definition
Traditional NSAID; reversible non-selective COX inhibitor.
Term
Ketorolac
Definition
Tradiational NSAID; reversibly inhibits COX, non-selective
Term
Piroxicam
Definition
Tradiational NSAID; non-selective, reversible COX inhibition
Term
Folinic acid
Definition

AKA leucovorin

readily converted to THF

For methotrexate rescue

Term
Capecitabine
Definition
Prodrug; converted to 5-FU in tumor.
CRC, breast
Cardiotoxic, dermatitis, GI, myelosuppression, thrombocytopenia
Term
Gemcitabine
Definition
deoxycytidine analog; causes DNA synthesis stop
lung, pancreas, bladder, breast
Fever, fatigue, N/V, rash, hair loss, sores
Term
Fludarabine
Definition
Purine analog
Effective for CLL
Lymphopenia, anemia, thrombocytopenia
Term
Cladribine
Definition
Purine analog (adenosine); adenosine deaminase resistant.
Hairy cell leukemia
Fever; otherwise well tolerated
Term
Dacarbazine
Definition
Methylating agent; requires hepatic activation.
Melanoma, lymphomas, sarcoma.
N/V, myelosupression, sterility
Term
Aragatroban
Definition
Directly inhibits thrombin
Alternative to heparin, use in patients with HIT
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