Antiplatelet And Anticoagulant Flashcards

(62 cards)

1
Q

Thromboxane synthesis inhibitor (Antiplatelet)

A

Acetylsalicylic acid

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2
Q

GP 2b3a receptor antagonist (antiplatelet)

A

Tirofiban

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3
Q

ADP receptor antagonist (antiplatelet)

A

Clopidogrel and ticagrelor

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4
Q

Antiplatelets are

A

Thromboxane synthesis inhibitor,GP 2b3a receptor antagonist and ADP receptor antagonist

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5
Q

Thromboxane synthesis inhibitor or Aspirin inhibits the enzyme

A

COX 1

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6
Q

GP 2b3a receptor are needed for

A

Platelets aggregation

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7
Q

ADP induce upregulation of

A

GP 2b3a receptor

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8
Q

Final stage of platelets aggregation

A

Fibrinogen binding to receptor

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9
Q

Use of thromboxane synthesis inhibitor

A

Secondary cerebrovascular and cardiovascular thrombosis prevention and ACS

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10
Q

Side E of Aspirin

A

Bleeding from GIT

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11
Q

GP 2b3a receptor antagonist use

A

ACS

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12
Q

ADP receptor also known as

A

P2Y12 receptors

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13
Q

Clopidogrel is a prodrug that should be activated by

A

CYP450 and does irreversible inhibition throughout life of PLT

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14
Q

Ticagrelor does

A

Reversible inhibition of P2Y12 receptor and also indirectly inhibit Gp2b3a receptor

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15
Q

Clinical use of ADP receptor antagonist

A

2 prevention of cerebrovascular and cardiovascular y and dual antiplatelet therapy for ACS and post ACS

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16
Q

In using Ticagrelor, PLT restore fn in

A

36 to 48 hr

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17
Q

Risk of bleeding in antiplatelet agents increase with

A

NSAIDS and GC

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18
Q

In case of aspirin intolerance —— is used

A

Clopidogrel

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19
Q

Non selective indirect coagulation factor inhibitor

A

Heparin(HMW), Enoxaparin (LMW)

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20
Q

Selective indirect inhibitors of factor 10a

A

Fondaparinux

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21
Q

Selective direct inhibitor of factor 2a

A

Dabigatran

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22
Q

Selective direct inhibitor of factor 10a

A

Rivaroxaban and apixaban

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23
Q

Zymogen synthesis inhibitor or vit K antagonist

A

Warfarin

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24
Q

Ischemic heart disease treatment

A

Anti Ischemic therapy,anti platelets agents and lipid correcting agents

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25
Acute Coronary syndrome treatment
Nitrate, oxygen therapy, analgesia and antiplatelet therapy
26
In case of DVT,INR is
2 to 3
27
INR is
Patients clotting time to mean normalized clotting time
28
Antithrombin 3 is a
Physiological Inactivator of serum proteases synthesized in liver
29
To treat Afib
Anticoagulant can be used
30
INR monitoring is required for
Vit K antagonist therapy
31
Complications of anticoagulant therapy are
Uncontrolled bleeding
32
Treatment with selective factor 10 a and 2a should be discontinued
24 to 48hr before surgery
33
Vit K antagonist therapy should be discontinued
1 to 5 days before surgery (depends on INR)
34
Antidote of heparin
Protamine sulphate
35
SE of heparin
Hemorrhage and heparin induced Thrombocytopenia
36
Heparin use
DVT prevention and therapy and ACS
37
Heparin toxicity can cause severe bleeding from
Abdominal walls, subcutaneously,spinal hematoma, intracranial bleeding
38
Heparin inhibition ratio
1:1
39
Enoxaparin inhibition ratio
2:1 to 4:1 mainly inhibits factor 10 than 2
40
Rivaroxaban use
DVT and PE treatment and prevention,stroke prevention (Afib)
41
Rivaroxaban antidote
Andexanet alpha
42
Dabigatran antidote
Idarucizumab
43
Warfarin
Vit K epoxide reductase inhibition (inhibition of vit K conversion)inhibition of synthesis of 2,7,,9,10 factors ,inhibition of protein c and s
44
Therapeutic effect of warfarin reach at day
5
45
Vit K is required for
Glutamic acid carboxylation reaction
46
Max effect of warfarin reached on ---days
2to 3 daya
47
T1/2 of warfarin
35 hrs
48
Warfarin toxicity
Teratogenic, ecchymoses, subconjunctival hemorrhage, gingival bleeding, internal organ bleeding like GIT, intracranial bleeding
49
Warfarin toxicity treatment
PCC (prothrombin complex concentrate), FFP iv and phytamenadione ( vitk) iv/po
50
Thrombolytic/fibrinolytic agents
Alteplase
51
Overdose of alteplase cause
Intracranial hemorrhage
52
Use of alteplase
ACS, pulmonary embolism, ischemic stroke therapy
53
Alteplase and streptokinase promotes the conversation of plasminogen to plasmin while ------+inhibits ot
Tranexamic acid (antifibronolytic)
54
Antihemorrhagic or hemostatic agents are
Fibrinolysis inhibitor (tranexamic acid) and vasopressin receptor agonist (desmopressin)
55
Hemophilia A
Inherited decreased factor 8
56
Von willebrands disease
Mucosal-skin hemorrhage
57
Von willebrands factor
Plasma glycoprotein involved in both primary hemostasis and coagulation process,acts as factor 8 transporter.So imp role in platelets adhesion and thrombus formation process
58
Tranexamic acid (reversible lysine analogue) use
Complications of fibrinolytic (thrombolytic therapy or hyperfibrinolysis;massive bleeding or it's prognosis
59
Tranexamic acid SE
Seizures at high dose
60
Tranexamic acid interactions with oral contraceptive cause risk of
Thrombosis
61
Desmopressin (vasopressin analogue)V2 receptor agonists
Increase factor 8 and Von willebrands factor and increase platelets adhesion in arterial and venous endotheo
62
Use of desmopressin
Scheduled surgery in patients with hemophilia a and Von willebrands disease; bleeding control in patients with prolonged blood flow time