Clotty boi Flashcards

1
Q

Vitamin K dependant clotting factors

A

II, VII, IX and X.

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2
Q

Treatment for vitamin K deficiency

A

phytomenadoine

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3
Q

What is Haemophilia A and how is it inherited?

A

X-linked recessive, lack of factor VIII

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4
Q

classes of haemophilia A

A

Three classes less than 1, 1-5 and 5+ (Levels of VII). Very severe disease, bleed into joints

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5
Q

APTT and PT in haemophilia A

A

APTT increased, PT normal.

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6
Q

Treatment for haemophilia A

A

Give factor VII

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7
Q

What is haemophilia B

A

Lack of Factor IX, x-linked recessive

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8
Q

Types of vW’s disease

A

Type one and 2 are mild forms, autosomal dominant. Type 3 is worse and recessively inherited

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9
Q

Investigation findings in VW’s (APPT and PT)

A

Prolonged APTT, normal PT and decreased levels of VII and vWF

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10
Q

Antiplatelets for arterial or venous clotting?

A

Arterial thrombosis

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11
Q

What does heprin do in the clotting cascade?

A

Increase the effect of anti thrombin

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12
Q

Which takes longer to work, wafarin or heparin?

A

Warfarin, so heparin is started first to overlap

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13
Q

Mechanism of fondaparinux?

A

Inhibits factor x, similar to LWMH

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14
Q

What is bivalirudin used in?

A

PCI

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15
Q

What is used in patients with heparin-induced thrombocytoponia?

A

Lepirudin

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16
Q

What type of drugs are ticagrelor and clopidogrel?

A

Antiplatelet

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17
Q

Name a LWMH

A

Enoxaparin

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18
Q

Anticoagulation for most cardiac things

A

Warfarin

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19
Q

Warfarin and pregnancy

A

Do not use. Can use in breast feeding

20
Q

Thrombin inhibitor

A

dabigatran

21
Q

factor Xa inhibitors

A

rivaoxaban, apixaban, edoxaban

22
Q

What dissolves the fibrin clot physiologically?

A

plasminogen/plasmin

23
Q

If 50/50 clotting test corrects

A

Somethings was deficient in the patients blood

24
Q

If 50/50 clotting test doesn’t correct

A

There is an inhibitor in the patients blood

25
Q

Clotting factors that affect APTT

A

VIII, IX, XI, XII vWF

26
Q

How to test extrinsic pathway

A

Prothrombin time

27
Q

How to test intrinsic pathway

A

APTT

28
Q

Prolonged PT is caused by

A

Warfarin or VII (Also II, V, X)

29
Q

Prolonged APTT caused by

A

Heparin, VIII, IX, XI, XII

30
Q

If PT and APTT are increased

A

K+ diffiencey - Liver/ absoption
Heparin
FV or FX - rare

31
Q

Diagnostic triad of bleeding disorders

A

Personal history
Family history
Lab tests

32
Q

Amount of VIII needed in Haemophilia A

A

Rise needed x weight all over 2

33
Q

Amount of IX needed in haemophilia B

A

rise needed x weight

34
Q

Mild haemophilia A treatment

A

Desmopressin

35
Q

Types of vWD

A

Type 1 - reduced vW protein
Type 2 - Abnormal vW protein (IIB overactive)
Type 3 - little/no vW

36
Q

Tests for vWD

A

Factor VIII
vW antigen
vW activity

37
Q

ratio of vW activity:antigen for type 1 vWD

A

> 0.6

38
Q

Ratio of vW activity:Antigen for type 2 vWD

A

<0.6

39
Q

Drug to avoid in type 2b vWD

A

Desmopressin use vWF conc instead

40
Q

Virchow’s triad

A

Stasis of flow, hypercoagulation, epithelial damage

41
Q

What is HITT?

A

Heparin Induced Thrombocytopenia and Thrombosis

42
Q

PE ECG changes

A

S1Q3T3

43
Q

high dosage of LMWH for DVT risk

A

40mg, low risk 20mg

44
Q

Three thrombin inhibitors

A

Heparin, fondaparinux, bivalirudin

45
Q

LMWH adverse effect on electrolytes

A

Hyperkalaemia due to aldosterone