Pathoma- Embolism Flashcards Preview

Unit 4: Blood and Lymph > Pathoma- Embolism > Flashcards

Flashcards in Pathoma- Embolism Deck (23)
1

What is the most common type of embolus?

a thromboembolus

2

What is an atherosclerotic embolus?

a BV plaque that dislodges; characterized by presence of cholesterol

3

When do fat emboli arise?

bone fractures or soft tissue trauma

4

Fat emboli tend to lodge in the lungs. What would the pt present with?

SOB, petichiae over chest, hx of recent fracture or fracture repair

5

What is a gas embolus?

dissolved nitrogen precipitating out of the blood after diving or laparoscopic surgery

6

What would a pt with a gas embolus present with?

joint and muscle pain (the bends)
respiratory symptoms (the chokes)

7

What is Caisson disease?

chronic gas emboli leading to multifocal ischemic necrosis of the bone

8

What is an amniotic fluid emboli?

amniotic fluid that enters maternal circulation during L and D

9

How will an amniotic fluid embolus present?

SOB, neuro symptoms, DIC

10

What does an amniotic fluid emboli look like?

squamous cells, keratin debris

11

What is PE?

a DVT that lodges in the lungs

12

Which BVs typically are the source of a DVT?

femoral, iliac, or popliteal vein

13

Why is a PE usually clinically silent?

1. the lung has a dual blood supply (pulm artery and bronchial artery)
2. emboli are usually small and self-resolving

14

What is a pulmonary infarction?

a large emboli obstructing a large or med sized artery in the lung combined with a pre-existing cardiopulmonary compromise

15

Only ____ of PEs cause infarction.

10%

16

What is the classical presentation of a PE?

SOB, hemoptysis, chest pain, pleural effusion, V/Q mismatch (perfusion abn), spiral CT shows vascular filling defect

17

What is a V/Q scan?

ventilation/perfusion test

18

How would you ID the source of the DVT?

ultrasound of the extremity

19

What lab will be elevated in a PE?

D-dimer

20

What is the infarct like in a PE?

wedge-shaped, hemorrhagic

21

What is pulmonary HTN?

a complication of chronic emboli reorganization

22

Where do systemic emboli come from?

the L heart

23

Blood flow to _____ is most commonly blocked in a systemic emboli.

lower extremities