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Flashcards in Bleeding Deck (25):
1

Blood

RBC make up 45%
WBC and platelets <1%

2

Plasma

Watery straw colored fluid that is more than half of all blood

3

Oxyhemoglobin Diassociation Curve

Determined by how readily hemoglobin acquires and releases oxygen molecules from surrounding tissue
(Pressure high in lungs, low in tissue)

4

Clotting proteins

Produced by the liver solidified rest of a blood clot

5

Perfusion

Circulation of blood within an organ or tissue in adequate amounts o meet cells needs

6

Vital Organs and kidneys

Will experience permanent damage after 45 minutes of inadequate perfusion

7

Skeletal muscles

More than 2 hours inadequate perfusion causes permanent damage

8

GI Tract

Can go many hours without blood

9

"Warm ischemic time"

Normal temp of a tissue or organ. Being cold can resist hypoperfusion because of the slowing of the body's metabolism

10

Arteries

Spurt initially but begin to flow after pressure drops
Cut transverse will retract and stop own bleeding. Vertically will often continue to bleed

11

Caterizing injuries

Train runs over legs, may be little bleeding due to heat of train carterizing wounds

12

Blood Loss <20%

Vitals will change and body can't tolerate

13

Femur Fractures

Hold up to 1L blood in femur

14

Consider Bleeding If:

Significant MOI
Poor general appearance
Hypoperfusion
Blood loss
Hemorrhage

15

Internal Clotting on Own

Bleeding tends to stop within 10 minutes on its own due to internal clotting factors

16

Open Vessel

Vessel is lacerated, blood flows rapidly from vessel
Open ends of vessel begin to constrict
Platelets agrregate at the site, plugging hole and sealing injured portions of vessel called hemostasis
Direct pressure of injury or environment triggers clotting factors

17

Medications Interfere

Aspirin, and beta blockers inhibit clotting and decrease vasoconstriction

18

Shock

All cases result in inadequate perfusion
Hemmorage Shock is most common

19

Hemorrhagic Shock

Three Phases: Compensated, Decompensated, Irreversible

20

Compensated Shock

Low circulating blood Volume with minimal signs of hypoperfusion
-agitation, anxiety, restlessness
-weak rapid pulse
-clammy, cool, moist skin
-nausea vomiting
-sob

21

Decompensated Shock

AMS
Hypotension
Labored Breathing
Absent or threads pulse
Mottled. Cyanotic skin
Dialate Pupils

22

Class I

< 15% blood loss. Normal vitals. Slightly anxious

23

Class II

15-30% blood loss. Tachycardia. Normal BP. Narrowing pulse pressure. Cap refill delayed. Increased respirations. Cool pale skin

24

Class III

30-40% blood loss. Tachycardia. Systolic Low. Narrowing pressures. Delayed cap refill. Fast breathing. Cold pale moist skin. Needs fluid and blood

25

Class IV

>40% blood loss. Tachycardia or bradycardic. Low pressure. Very narrow pressures. Cap refill absent. Resp rate increased or diminished. AMS. Cold Cyanotic. Fluid and Blood.