Chapter 25 Flashcards
the_______ side of the heart circulates blood from the body to the lungs
right
the______side of the heart circulates oxygen-rich blood from the lungs to the rest of the body
left
why is the right pump more muscular then the left
it must pump blood into the aorta and arteries in order to reach all cells of the body
as blood flows out of the heart, it passes into the____
aorta
the aorta is the largest____in the body
artery
the smaller blood vessels that connect the arteries and capillaries are____
arterioles
_______are small tubes, with the diameter of a single red blood cell, that pass among all the cells in the body, linking the arterioles and the_______
capillaries, venules
blood leaving the ____side of the capillaries flows into the venules
distal
small, thin-walled vessels empty into the ______, and the veins then empty into the ________ and __________ __ ___?
veins, inferior and superior venae cavae
the circulation of blood within an organ or tissue in adequate amounts to meet the cells current needs for oxygen, nutrients, and waste removal
perfusion
blood enters an organ or tissue first through?
arteries, then the arterioles, and finally the capillary bed
dark red and oozes from the wound slowly but steadily
capillary vessel
darker than arterial bleeding, and flows steadily
venous bleeding
bright red and spurts in time with pulse
arterial bleeding
what is DCAP-BTLS
Deformities, Contusions, Abrasions,Punctures,Burns, Tenderness,Lacerations,Swelling
Mass of blood in the soft tissue beneath the skin
Hematoma
Formation of a clot to plug an opening in an injured blood vessel, stopping blood flow
coagulation
upper chamber
atruim
a congenital condition in which a patient lacks one or more of the bloods normal clotting factors
hemophilia
works as two paired pumps
heart
largest artery in the body
aorta
a condition in which low blood volume results in inadequate perfusion
hypovolemic shock
oxygenated blood travels through this back to the heart
pulmonary vein
bruising
ecchymosis
blood flow to the lungs
pulmonary artery
lower chamber
ventricle
bleeding
hemorrhage
nosebleed
epistaxis
the function of the blood is to______ all of the bodys cells and tissues
deliver nutrients
the cardiovascular system consists of all of the following EXCEPT:
a battery
blood leaves each chamber of a normal heart through a (n):
one-way valve
blood enters the right atrium from the:
vena cava
_______is inadequate tissue perfusion
shock
the brain and spinal cord usually cannot go for more than_____ minutes without perfusion, or the nerve cells will be permanently damaged
4 to 6
an organ or tissue that is considerably_____ is much better able to resist damage from hypoperfusion
colder
the body will not tolerate an acute blood loss of greater than____ of blood volume
20%
if the typical adult loses more than 1L of blood, significant changes in vital signs, such as______,will occur
increased respiratory rate
_____ shock is a condition in which low blood volume results in inadequate perfusion or even death
Hypovolemic
you should consider bleeding to be serious if all of the following conditions are present EXCEPT:
there is no MOI
Life-threatening external bleeding demands your immediate attention, even before the _____ has been managed
airway
the process of blood clotting and plugging the hole is called:
coagulation
blood enters the left atrium from the:
lungs
which of the following is NOT a factor in the formation of blood clots?
pumping function of the heart
the______is the thickest chamber of the heart
left ventricle
the_____links the arterioles and the venules
capillaries
_______are the key to formation of blood clots
platelets
blood contains all of the following EXCEPT:
cerebrospinal fluid
_____is the circulation of blood within an organ or tissue in adequate amounts to meet the cells’ current needs for oxygen,nutrients, and waste removal
perfusion
the______only requires a minimal blood supply while at rest
muscles
what part of the human body helps the Cardiovascular system adapt to changes in order to maintain homeostasis?
autonomic nervous system
signs and symptoms of internal bleeding in both trauma and medical patients include:
hematemesis(vomiting blood)
the first sign of hypovolemic shock is a change in:
mental status
Venous blood tends to spurt and is difficult to control
False
the human body is tolerant of blood losses greater than 20% of blood volume
False
the first step in controlling external bleeding is applying pressure to the proximal artery
False
the first step in preparing to treat a bleeding patient is standard precautions
true
a properly applied tourniquet should be loosened by the EMT every 10 mins
false
a patient who has swallowed a lot of blood may become nauseas and vomit
true
you should contact medical control before applying tourniquet
false
if a wound continues to bleed after it is bandaged, you should remove the bandage and start over again
false
a tourniquet is always required for massive spurting blood loss
false
you should provide high-flow oxygen whenever you suspect internal bleeding
true
the_____side of the heart receives oxygen-poor from the veins
right
_____is the circulation of blood within an organ or tissue in adequate amounts to meet the cells’ current needs for oxygen, nutrients, and waste removal
perfusion
a(n)_____is also called a contusion
bruise
_____bleeding is any bleeding in a cavity or space inside the body
internal
a systolic blood pressure of less than______mm Hg with a weak, rapid pulse suggests the presence of hypoperfusion in a patient who may have significant bleeding
100
_____is vommiting blood
hematemesis
_____blood is dark red and oozes from a wound steadily but slowly
capillary
the _____ ____ system monitors the bodys needs from moment to moment and adjusts blood flow by changing the vascular tone, as needed
autonomic nervous system
_____are small tubes that are about the same diameter as a single red blood cell
capilaries
all organs depend on the ______to provide a rich blood supply
heart
discoloration of the skin associated with a closed wound
ecchymosis
vomited blood
hematemesis
a bruise, or ecchymosis
contusion
a blood vessel that carries blood away from the heart
artery
the blood vessels that carry blood from the tissue to the heart
veins
a congential condition in which the patient lacks one or more of the bloods normal clotting factors
hemophilia
the main artery that receives blood from the left ventricle and delivers it to all of the other arteries that carry blood to the tissues of the body
aorta
a mass of blood in the soft tissues beneath the skin
hematoma
a condition in which the circulatory system fails to provide sufficient circulation so that every body party can perform its function
shock
____shock is a condition in which low blood volume results in inadequate perfusion
hypovolemic
the bleeding control method used when a wound continues to bleed despite the use of direct pressure and evelation
tourniquet
circulation of blood within an organ or tissue in adequate amounts to meet the current needs of the cells
perfusion
a nosebleed
epistaxis
black, foul-smelling, tarry stool containing digested blood
melena
Describe how the autonomic nervous system responds to severe bleeding
it redirects blood away from nonessential organs to the heart, brain,lungs, and kidney
describe the characteristics of bleeding from each type of vessel
artery: bright red, spurting
vein: dark color with steady flow
capillary: darker color, oozes
List, in proper sequence, the methods by which an EMT should attempt to control external bleeding of an extremity
1 direct pressure 2 pressure dressing 3 tourniquet 4 hemostatic agent/splints
list at least 10 signs and symptoms of hypovolemic shock
tachycarida/weakness,fainting, or dizziness on standing or at rest/thirst/nausea and vomiting/ cold, moist(clammy)skin/shallow,rapid breathing/dull eyes/slightly dilated pupils, slow to respond to light/capillary refill in infants and children of more than 2 sec/ week, rapid(thready)pulse/ decreasing blood pressure/altered mental status
list, in the proper sequence, the general EMT emergency care for patients with internal bleeding
1 follow standard precaution
2 maintain the airway with cervical spine immobilization
3 administer high-flow oxygen and provide artificial ventilation as necessary
4control all obvious external bleeding
5 treat suspect internal bleeding in an extremity by applying a splint
6 consider a pelvic compression device or splint for suspected internal bleeding from the pelvis area
7 monitor and record the patients vital signs at least every 5 min
8 keep the patient warm
9 give nothing by mouth
10 provide prompt transport for all patients with signs and symptoms of hypoperfusion. report changes inconditon to the ED