Hematology Flashcards
<p>Heparin</p>
<p>1) immediate anticoag for PE, ACS, MI, DVT (pregnancy safe)
2) Anti-thrombin: antithrombin cofactor --> decr thrombin* + decr factor Xa
3) toxicity: bleeding, HIT, osteoporosis, Rx interactions; protamine sulfate antidote (pos charge molec that binds neg charge heparin)
4) short 1/2 life</p>
<p>Enoxaparin</p>
<p>1) immediate anticoag for PE, ACS, MI, DVT (pregnancy safe)
2) LMWH antithrombin: act more on factor Xa
3) toxicity but less risk than heparin: bleeding, HIT, osteoporosis, Rx interactions; no antidote
4) compared to heparin: better bioavail, 2~4x longer 1/2 life; sub-Q; no need to monitor</p>
<p>Dalteparin</p>
<p>1) immediate anticoag for PE, ACS, MI, DVT (pregnancy safe)
2) LMWH antithrombin: act more on factor Xa
3) toxicity but less risk than heparin: bleeding, HIT, osteoporosis, Rx interactions; no antidote
4) compared to heparin: better bioavail, 2~4x longer 1/2 life; sub-Q; no need to monitor</p>
Mineral/Vitamin: Folic Acid
1) Use: PND, traumatic cardiac hemolytic anemia, folate defiency (alcoholism)
2) Class/MOA:
3) Side effects/ADEs:
4) Fun Facts
<p>Lepirudin</p>
<p>1) immediate anticoag for pts w/ HIT
2) antithrombin
3) N/A
4) deriv of hirudin (leeches)</p>
<p>Bivalirudin</p>
<p>1) immediate anticoag for pts w/ HIT
2) antithrombin
3) N/A
4) deriv of hirudin (leeches)</p>
Desferrioxamine (Deferoozamine or Desferal)
1) Use: Thalasemias, or other disease with regular blood transfusions - helps avoid iron overload (causes cirrhosis, CHF, DM)
2) Class/MOA: IRON CHELATOR (NOT ORAL!)
3) Side effects/ADEs:
4) Fun Facts
<p>Warfarin (Coumadin)</p>
<p>1) chronic anticoag: post STEMI, VTE prophylaxis, prevent stroke in afib (teratogenic)
2) antiplt: interfere w/ nl syn + carboyxlation of vit-K clotting factors (1972: X, IX, VII, II) + proteins C, S
3) bleeding, teratogenic, skin/tissue necrosis*, Rx interactions; give vit K for OD, give FFP for severe OD
4) cyt P450 met; incr PT (extrinsic path); long 1/2 life; follow PT/INR; PO</p>
<p>Alteplase (tPA)</p>
<p>1) early MI, early ischemic stroke, direct thrombolysis of severe PE
2) thrombolytic: aid plasminogen --> plasmin to cleave thrombin + fibrin clots
3) bleeding (contraindicate in active bleed, intracranial bleed hx, recent sx, known bleed diathese, severe HTN); tx toxicity w/ aminocaproic acid (inhibits fibrinolysis)
4) incr PT, PTT; no change in plt ct</p>
Epoeitin
1) Use: anemia
2) Class/MOA: GROWTH FACTOR EPO = increases RBC
3) Side effects/ADEs:
4) Fun Facts
<p>Reteplase (rPA)</p>
<p>1) early MI, early ischemic stroke, direct thrombolysis of severe PE
2) thrombolytic: aid plasminogen --> plasmin to cleave thrombin + fibrin clots
3) bleeding (contraindicate in active bleed, intracranial bleed hx, recent sx, known bleed diathese, severe HTN); tx toxicity w/ aminocaproic acid (inhibits fibrinolysis)
4) incr PT, PTT; no change in plt ct</p>
<p>Tenecteplase (TNK-tPA)</p>
<p>1) early MI, early ischemic stroke, direct thrombolysis of severe PE
2) thrombolytic: aid plasminogen --> plasmin to cleave thrombin + fibrin clots
3) bleeding (contraindicate in active bleed, intracranial bleed hx, recent sx, known bleed diathese, severe HTN); tx toxicity w/ aminocaproic acid (inhibits fibrinolysis)
4) incr PT, PTT; no change in plt ct</p>
IL-11 (Oprelvekin, Neumega) Rx: thrombocytopenia
1) Use: GROWTH FACTOR thrombocytopenia
2) Class/MOA: stimulates the growth of primative MEGAKARYOCYTE progenitors - increase megakaryocytes, increase peripheral platelets
3) Side effects/ADEs: fatigue, headache, CVE
4) Fun Facts:
<p>Aspirin (ASA)</p>
<p>1) antipyretic, analgesic, anti-infl, anti-plt (decr aggregation)
2) irreversibly inhibits COX-1 (and -2) via covalent acetylation --> decr TxA2 + prostaglandins
3) gastric ulcer, tinnitus (CN VIII); chronic use: acute renal failure, interstitial nephritis, upper GI bleed; Reye's syn in kids w/ viral infct; OD: respir alkalosis + met acidosis
4) plts can't syn new COX so effect lasts until new plts made; incr bleeding time; no effect on PT, PTT</p>
Growth Factor: Romiplostim (Nplade) - Thrombopoeitin analog - Rx for chronic ITP
1) Use: GROWTH FACTOR thrombocytopenia
2) Class/MOA: same as IL-12: stimulates growth of primative megakarycytic progenitors, increasing megakaryocytes, increasing platelets
3) Side effects/ADEs: fatigue, headache, CVE
4) Fun Facts
<p>Clopidogrel</p>
<p>1) ACS, coronary stenting, decr incidence + recurr of thrombotic stroke
2) ADP R inhibitor: inhibit plt aggregation by irreversibly blocking ADP R; inhibit fibrinogen binding via Gp IIb/IIIa
3) N/A
4) N/A</p>
<p>Ticlopidine</p>
<p>1) ACS, coronary stenting, decr incidence + recurr of thrombotic stroke
2) ADP R inhibitor: inhibit plt aggregation by irreversibly blocking ADP R; inhibit fibrinogen binding via Gp IIb/IIIa
3) neutropenia (unique)
4) N/A</p>
Ticlopidine, Clopidogrel (Plavix)
1) Use: PLATELET INHIBITOR
2) Class/MOA: Inhibit platelet aggregation by irreversibly blocking ADP RECEPTORS | inhibit fibrinogen binding by preventing glycoprotein Iib/I
<p>Prasugrel</p>
<p>1) ACS, coronary stenting, decr incidence + recurr of thrombotic stroke
2) ADP R inhibitor: inhibit plt aggregation by irreversibly blocking ADP R; inhibit fibrinogen binding via Gp IIb/IIIa
3) N/A
4) N/A</p>
<p>Ticagrelor</p>
<p>1) ACS, coronary stenting, decr incidence + recurr of thrombotic stroke
2) ADP R inhibitor: inhibit plt aggregation by irreversibly blocking ADP R; inhibit fibrinogen binding via Gp IIb/IIIa
3) N/A
4) N/A</p>
Dipyridamole
1) Use: PLATELET INHIBITOR
2) Class/MOA: increase cAMP = decrease ADENOSINE uptake/cyclic nucleotide PDE = decreased aggregation
3) Side effects/ADEs: serious bleeding risk
4) Fun Facts
<p>Cilostazol</p>
<p>1) intermittent claudication, coronary vasodilation, prevent stroke/TIAs (w/ ASA), angina prophylaxis
2) PDE III inhibitor --> incr cAMP in plts --> inhibit plt aggregation; vasodilator
3) nausea, HA, facial flush, hypotension, ab pain
4) N/A</p>
Heparin
1) Use: immediate ANTICOAG for PE, stroke, ACS, MI, DVT | used during pregnancy | follow PTT
2) Class/MOA: INHIBITS THROMBIN ACTION | cofactor for activation of ANTI-THROMBIN, decrease thrombin and Xa, short 1/2 life
3) Side effects/ADEs: Bleeding, thrombocytopenai (HIT),
<p>Dipyridamole</p>
<p>1) intermittent claudication, coronary vasodilation, prevent stroke/TIAs (w/ ASA), angina prophylaxis
2) PDE III inhibitor --> incr cAMP in plts --> inhibit plt aggregation; vasodilator
3) nausea, HA, facial flush, hypotension, ab pain
4) N/A</p>
<p>Abciximab</p>
<p>1) ACS, PTCA
2) Gp IIb/IIIa inhibitor: bind R on activated plts --> prevent aggregation
3) bleeding, thrombocytopenia
4) made from monoclonal ab Fab fragments (unique)</p>
Lepirudin, Bilirudin
1) Use:
2) Class/MOA: Hirudin derivatives; directly INHIBITS THROMBIN
3) Side effects/ADEs:
4) Fun Facts: used as an alternative to heparin for anticoagulating patients with HIT
<p>Eptifibatide</p>
<p>1) ACS, PTCA
2) Gp IIb/IIIa inhibitor: bind R on activated plts --> prevent aggregation
3) bleeding, thrombocytopenia
4) N/A</p>
<p>Tirofiban</p>
<p>1) ACS, PTCA
2) Gp IIb/IIIa inhibitor: bind R on activated plts --> prevent aggregation
3) bleeding, thrombocytopenia
4) N/A</p>
Warfarin
1) Use: Chronic anticoagulation | not used in pregnat women | follow PT/INR values
2) Class/MOA: interfears with normal synthesis of K depedent clotting factors through blocking | INHIBIT THROMBIN GENERATION
3) Side effects/ADEs: bleeding, teratogenic,
Mineral/Vitamin: Ferrous Sulfate
1) Use: Iron defiecnt anemia
2) Class/MOA:
3) Side effects/ADEs: Constipation
4) Fun Facts