Chapter 4 Flashcards
________ is a progressive state of cellular hypo perfusion in which insufficient oxygen is available to meet tissue demands, which results in adequate energy production to perform cellular activities.
Shock
A complete heartbeat is called a __________.
cardiac cycle
_______ is the volume of blood that the heart can pump per minute.
Cardiac output
The precontraction pressure is known as ________.
preload
The force, or resistance against which the heart pumps is known as ________.
afterload
The stroke volume of a healthy adult is typically about ____mL.
70
The resistance of blood flow through the circulatory system is called ___________.
peripheral vascular resistance
The _________ are the first cellular components affected by shock.
mitochondria
In the aortic arch and carotid arteries, sympathetic nerve fibers called ______ constantly monitor arterial blood pressure.
baroreceptors
The _______, located on top of the kidneys, release epinephrine and norepinephrine in response to declining cardiac output.
adrenal glands
The anterior pituitary gland releases _______ in response to shock.
antidiuretic hormone (ADH)
__________ secretion also creates the sensation of thirst, one of the early signs of shock.
Aldosterone
In hemorrhagic shock, decompensated shock occurs when blood volume drops by more than _____%.
30
_______ may be the last measurable factor to change in shock.
Blood pressure
Bright red blood in the stool indicates active bleeding from the _______ GI tract.
lower
Dark red or maroon stool called ______ is due to upper GI bleeding.
melena
A weak, thready pulse is an indicator of __________.
hypoperfusion
Because of an increase in a person’s metabolism during shock, ______ can become perilously low.
glucose
It is preferred that the blood be typed and crossmatched, but if time does not allow, uncross matched type __________ can be given.
O-negative
There are generally two complications of blood product administration:
infection
immune reactions
Monitoring the patient’s ________ is a standard of care during blood administration.
temperature
Shock can be categorized into four types:
hypovolemic
cardiogenic
obstructive
distributive
In a healthy adult, ______% blood loss is well tolerated.
10 - 15
__________ is highly characteristic of neurogenic shock.
Bradycardia