Von Willebrands disease (VWD) Flashcards

1
Q

What type/pattern of bleeding occurs in VW disease?

A

Clotting type

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2
Q

What is the most common inherited bleeding disorder?

A

Von Willebrand’s disease

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3
Q

What chromosme is mutated in VWD?

A

Chromsome 12

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4
Q

What are the clinical faetures of VWD?

A

Epistaxis

Bleeding after burshing teeth

Excessive bleeding after surgery

Eaily brusing

Menorrhagia

Haemathrosis

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5
Q

What condition should you always rule out for when a patient presents with VWD?

A

Lukaemia

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6
Q

What investigations are done for VWD?

A

APTT (activated partial thromboplastin time)

PTT (partial thromboplastin time)

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7
Q

What mode of inheritance is VWD?

A

Autosomal dominant

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8
Q

What are the treatments for VWD?

A

Desmopressin

Blood transfusions

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9
Q

If a girl with VWD has menorrhagia, what treatment can be given?

A

OCP

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10
Q

What are the functions of VW factor (VWF)?

A

Primary homeostasis

Fibrin clot fomration

Platlet aggregation

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11
Q

What are the 3 different types of VWD?

A

Type 1 -> Qualitve issue (too little VWF)

Type 2 -> Quality issue (VWF is of a shit quality)

Type 3 -> Absence (VWF is just no where to be seen ehhh)

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12
Q

Where are the bleeding sites for VWD?

A

Muscous membranes (nose, gums…)

Skin

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13
Q

Can both boys and girls get VWD?

A

Yeah

It’s not X-linked bruv

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14
Q

For how long does epitaxis occur in VWD?

A

>10mins

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15
Q

What does VWF molecule look like?

A

Long and colied

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16
Q

What triggers VWF to unwind itself and what does it bind to once it is unwound?

A

Vessel damage

Binds to -> collagen

This forms the inital plug

17
Q

What coagulation factor does VWF bind to?

A

F8

18
Q

What are young female given patients with VWD given to help with their menorrhagia?

A

Progesterone analgoues

19
Q

What 2 tests are done in a coagulation screen?

A

APTT

PTT