Chapter 29 | Bleeding and Shock Flashcards
• Signs, symptoms, and care of a patient with shock • Recognizing hemorrhage • How to evaluate the severity of external bleeding • How to control external bleeding • Signs, symptoms, and care of a patient with internal bleeding
Define:
shock
body’s inability to circulate blood adequately to the body’s cells to supply them with oxygen and nutrients
aka hypoperfusion (oh and it’s life-threatening)
Define:
capillaries
any of the fine branching blood vessels that form a network between the arterioles and venules
List:
functions of blood
5 points
- transportation of gasses: does the air-liquid dance at the alveoli and stuff
- nutrition: transportation of nutrients from digestive system (like glucose)
- excretion: removing waste from cells (like CO₂)
- protection: protecting against pathogens and clotting
- regulation: hormones/enzymes/chemicals carried in blood to control body functions
Define:
hemorrhage
bleeding
(especially severe bleeding)
Define:
hypoperfusion
(physiological term)
inability of the body to adequately circulate blood to the body’s cells to supply them with oxygen and nutrients
literally synonymous with shock
Define:
hypovolemic shock
hypoperfusion caused by low blood/fluid volume
Define:
distributive shock
hypoperfusion caused by low blood vessel tone
Define:
cardiogenic shock
hypoperfusion caused by failure of heart to pump blood
Define:
obstructive shock
hypoperfusion caused by inability of blood to flow
Define:
hemorrhagic shock
hypoperfusion caused by uncontrolled bleeding
the patient is hemorrhaging (bleeding dumbass)
Define:
neurogenic shock
hypoperfusion caused by spinal cord injury that results in systemic vasodilation
List:
pathophysiologies of shock
4 points
- volume problems: hypovolemia/hemorrhage
- pump problems: cardiogenic shock
- blood vessel tone problems: distributive shock
- obstruction of blood to flow: obstructive shock
List:
signs/symptoms of compensated shock
5 points
- slight mental status changes (AMS)
- increased HR
- increased RR
- pale/cool/diaphoretic skin
- delayed capillary refill time
(compensation usually includes normal BP)
List:
body’s means of responding to shock
3 points (how does it compensate)
- regulation of volume: kidneys retain fluid and excretion is reduced
- vasoconstriction: (most useful method) narrowing blood vessels to try to increase BP
- cardiopulmonary response: epinephrine/norepinephrine released to speed up heart
Define:
decompensated shock
period when body can no longer compensate for hypoperfusion
(late signs like decreasing BP become evident)
List:
signs/symptoms of decompensated shock
3 points
- low BP
- weak/thready pulse (with abnormal rate)
- cool, pale, diaphoretic skin
Define:
irreversible shock
hypoperfusion to the point of failure of organ systems
Fill in the blank:
Irreversible shock is called irreversible because [BLANK].
Irreversible shock is called irreversible because at this point, even if the patient survives, the underlying problem of organ damage is likely uncorrectable.
Describe:
key interventions for hypovolemic shock
2 points
bleeding control and rapid transport
Describe:
key intervention for cardiogenic shock
(Dude is in cardiogenic shock. What do you do? Go.)
request ALS because certain meds/interventions to support BP may be critical
Describe:
key intervention for anaphylactic distributive shock
epinephrine administration
Describe:
key intervention for septic distributive shock
2 points
sepsis alert (to notify receiving facility) and rapid transport
(very time sensitive)
Explain:
ways to recognize arterial bleeding
3 points
- bright red color
- often spurting
- profuse bleeding (and difficult to control)
List:
ways to identify veinous bleeding
3 points
- dark red or maroon color
- steady flow
- easier to control
List:
ways to identify capillary bleeding
2 points
- slow rate
- oozing flow of blood
List:
primary methods of controlling massive external bleeding
5 points
- direct pressure
- hemostatic agents
- elevation
- wound packing
- tourniquet use on extremeties
List:
procedure for applying direct pressure to external bleeding
5 points
- apply firm pressure with palm of hand
- hold pressure firmly until bleeding is controlled
- resist temptation to apply layers of absorbent dressings
- (once controlled) bandage a dressing firmly in place with pressure dressing
- do not remove dressing
List:
procedure for wound packing for external bleeding
3 points
- apply direct pressure to wound
- feed gauze into wound cavity until full
- resume direct pressure once cavity is full (consider pressure dressing)
Define:
pressure dressing
bulky dressing held in position with tightly wrapped bandage
applies pressure to help control bleeding
Define:
tourniquet
device used to constrict extremity blood flow to stop bleeding
Identify:
tourniquet
(device used to constrict extremity blood flow to stop bleeding)
List:
procedure for applying a tourniquet for external bleeding
5 points
- select appropriate site (proximal to extremity wound)
- place the strap around the limb, pull the free end through the buckle, and tighten as much as possible
- warn patient of immense pain
- tighen using mechanism until arterial occlusion (evidenced by distal pulse)
- annotate when applied on patient
List:
types of shock
6 points
- hypovolemic shock
- cardiogenic shock
- neurogenic shock
- anaphylactic shock
- septic shock
- obstructive shock
List:
primary treatments for shock
4 points
- high-flow oxygen
- laying supine
- warm blanket
- rapid transport
List:
stages of shock severity
3 points
- compensated
- decompensated
- irreversible
Fill in the blank:
A victim who is bleeding from an artery can die in [BLANK] minutes.
A victim who is bleeding from an artery can die in 3 minutes.
Fill in the blank:
A victim who is bleeding from an artery can [BLANK] in 3 minutes.
A victim who is bleeding from an artery can die in 3 minutes.
Choose:
If blood is not circulated adequately through the body’s capillaries, cells become starved for oxygen and nutrients, and overloaded with carbon dioxide and waste products.
This condition is known as:
A. cardiac compromise.
B. hypoperfusion.
C. circulatory depression.
D. hypotension.
B
under some conditions, blood does not circulate adequately through all the body’s capillaries
chief result of inadequate circulation is a state of profound depression of cell perfusion, called shock (or hypoperfusion)
cells become starved for oxygen (hypoxia) and nutrients, and become overloaded with carbon dioxide and other waste products
Answer:
How does the vascular system control temperature regulation?
The body’s mechanism to conserve heat is to expand (dilate) or narrow (constrict) the blood vessels.
dilation of the blood vessels contributes to heat dissipation, whereas constriction of the blood vessels preserves core temperature by decreasing heat dissipation
Choose:
Gas exchange of oxygen for carbon dioxide occurs at the cellular level of the body between:
A. capillaries and veins.
B. capillaries and body cells.
C. arteries and body cells.
D. arteries and capillaries.
B
Choose:
Of the following adjustments to the vascular system, which will contribute the most to increased perfusion to the core?
A. Decreased vascular diameter
B. Increased blood volume
C. Decreased heart rate
D. Increased oxygen consumption
A
laws of hemodynamics demonstrate that a reduction in vascular diameter has the greatest influence on perfusion
conversely, increasing the diameter would cause a reduction in perfusion, as is seen with septic and anaphylactic shock
Choose:
Which of the following is a defense mechanism that the body uses to defend against shock?
A. Increased heart rate
B. Vasodilation
C. Decreased respirations
D. Decreased heart rate
A