PALS 2024 Shock Exam Questions With Verified Answers.
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PALS
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PALS
PALS 2024 Shock Exam Questions With
Verified Answers.
Shock - answerShock is defined as a physiologic state characterized by inadequate tissue
perfusion to meet metabolic demand and tissue oxygenation.
metabolic demand - answerwhat cardiac output is normally equal to
How can shock be character...
PALS 2024 Shock Exam Questions With
Verified Answers.
Shock - answer✔Shock is defined as a physiologic state characterized by inadequate tissue
perfusion to meet metabolic demand and tissue oxygenation.
metabolic demand - answer✔what cardiac output is normally equal to
How can shock be characterized? - answer✔By inadequate peripheral and end organ perfusion.
Also it can be characterized by low cardiac output and decreased level of consciousness.
What types of shock can cause a high cardiac output? - answer✔Shock thats caused by sepsis or
anaphylaxis cardiac out put can be high
All types of shock can do what to organs? - answer✔Can result in impared function of vital
organs such as the brain (Decreased level of consciousness) and kidneys ( Low urine output and
ineffective filtering)
What will occur if adequate o2 delivery to the tissues is not maintained? - answer✔Organ
dysfunction
What are the major functions of the cardiopulmonary system? - answer✔Delivers oxygen to
body tissues
Removes metabolic by products of cellular metabolism
Tissue hypoxia - answer✔This is present when a region of the body or an organ is deprived of
adequate O2 supply.
What does cardiac output determine and vascular resistance determine? - answer✔Determines
adequate blood flow to the tissues
Cardiac output - answer✔The volume of blood pumped by the heart per minute is the product of
stroke volume and heart rate
Stroke volume - answer✔The volume of blood pumped by the ventricles with each contraction
Cardia output=Stroke volume X Heart Rate - answer✔According to this formula if the heart rate
decreases, stroke volume must increase commensurately to maintain the cardiac output.
How can cardiac output increase? - answer✔By an increase in heart rate, in stroke volume or
both
What are the limits of increased cardia output produced by increasing heart rate? - answer✔If the
rate is too fast, as can happen with tachyarrhythmias, stroke volume can fall bc there is
inadequate time to fill the heart.
As shock develops, compensatory mechanisms attempt to? - answer✔Attempt to maintain O2
delivery to vital organs
vasoconstriction - answer✔the constriction of blood vessels, which increases blood pressure.
Name the compensatory mechanisms - answer✔Tachycardia
Increased strength of cardiac contraction (Contractility)
Increase in venous smooth muscle tone
The body's first action to maintain cardiac output is to? - answer✔Is to increase heart rate, or
tachycardia, which can increase cardiac output to a limited degree
When O2 delivery to the tissues is compromised what happens? - answer✔Blood flow is
redirected or shunted from nonvital organs and tissues ( like skin, skeletal muscles, gut, kidneys)
to vital organs like brain, heart
What is another mechanism to maintain stroke volume and cardiac output? - answer✔Is
increased strength of cardiac contractions, or contractility, with more complete emptying of the
ventricles
What else can support stroke volume? - answer✔Can be supported by increased venous smooth
muscle tone, improving venous return to the heart and preload
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