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Pathophysiology
Cards for pathophysiology chapter
51
Medical
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07/09/2017

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Term
disease
Definition
abnormal structural or functional change in the body
Term
pathophysiology
Definition
the study of disease
Term
pathology
Definition
medical science that deals with all aspects of disease
Term
autoimmune disease
Definition
when the immune system fails to recognize certain tissues belonging to the host and mounts immune response
Term
ischemia
Definition
disease stemming from hypoxic injury, results from diminished blood flow
Term
iatrogenic
Definition
a disease stemming from medical treatment of another disease or illness
Term
glucose
Definition
six carbon sugar and the principal energy source for the human body
Term
glycogen
Definition
stored in the liver and skeletal muscle, broken down into glucose using glycogenesis when needed
Term
Ph scale
Definition
scale that expresses the acidity or alkalinity of a substance, ranges from 0 to 14
Term
buffer
Definition
substance that when dissolved in water produces a change in Ph
Term
PaCO2
Definition
partial pressure of carbon dioxide in the blood
Term
chemoreceptors
Definition
sense changes in the CO2 levels in the blood
Term
acidosis
Definition
excess of acids in the body
Term
alkalosis
Definition
abundance of bases in the body
Term
respiratory acid-base disorders
Definition
respiratory acidosis (caused by cardiac arrest, respiratory failure/arrest) and respiratory alkalosis (caused by hyperventilation)
Term
metabolic (kidney) acid-base disorders
Definition
metabolic acidosis (caused by a deficiency of bicarbonate in the body) and metabolic alkalosis (rare and caused by increase of bicarbonate in circulating blood)
Term
hypercapnia
Definition
an increase in the CO2 level in the plasma
Term
minute volume
Definition
the amount of air moved in and out of the lungs in one minute
Term
simple diffusion
Definition
movement of a substance from area of higher concentration to area of lower concentration
Term
concentration gradient
Definition
the difference between the number of ions of the substance on one side of the membrane from the number of molecules on the other
Term
isotonic
Definition
concentration of solutions on both sides of a membrane are equal
Term
hypertonic
Definition
substance is more concentrated than solution on other side of membrane
Term
hypotonic
Definition
substance is less concentrated than solution on other side of membrane
Term
sodium potassium pump
Definition
transports sodium ions out of the cell and potassium ions into the cell
Term
water
Definition
most abundant substance in human body, accounts for approximately 60% of overall weight, the universal solvent
Term
intacellular compartment
Definition
contains all intracellular fluid in the cells, approx 70% of water in the body
Term
extracellular compartment
Definition
contains the remaining 30% of water in the body outside the cells, consists of the intravascular fluid and interstitial fluid outside of the vasculature
Term
antidiuretic hormone
Definition
released by the pituitary gland to cause the kidneys to reabsorb more water into the blood stream and excrete less urine
Term
hydrostatic force
Definition
force exerted on the walls of blood vessels by the contractions of the heart
Term
edema
Definition
accumulation of water in the interstitial space, can be localized or generalized
Term
hematocrit
Definition
percentage of blood occupied by red blood cells
Term
normal saline
Definition
isotonic electrolyte solution
Term
lactated ringers
Definition
isotonic electrolyte solution
Term
D5W
Definition
hypotonic glucose solution in water used to keep veins open and supply glucose for cell metabolism
Term
hyperplasia
Definition
increase in the number of cells in a tissue or organ
Term
hypertrophy
Definition
increase in the size of cells in a tissue or organ
Term
atrophy
Definition
decrease in the size of cells in a tissue or organ
Term
dysplasia
Definition
abnormal or disordered cell growth
Term
tumor
Definition
mass of uncontrolled cell growth
Term
hypoperfusion
Definition
also known as shock, self-worsening cycle of events that is fatal if not corrected. impaired oxygen use and impaired glucose use are usual characteristics
Term
peripheral vascular resistance
Definition
the pressure against which the heart must pump
Term
Fick Principle
Definition
adequate concentration of inspired oxygen

appropriate movement of oxygen across the alveolarcappilary membrane into the arterial bloodstream

adequate number of red blood cells to carry the oxygen

proper tissue perfusion

efficient offloading of oxygen at the tissue level
Term
compensation
Definition
body using special systems to attempt to reestablish a normal blood pressure during shock. increased heart rate, contractile strength, the arteriolar constriction. the spleen can expel up to 200 ml of blood into venous circulation.
Term
decompensation
Definition
body is unable to restore blood pressure using special processes
Term
irreversible shock
Definition
correction of the shock by special processes is no longer possible
Term
Types of shock
Definition
Cardiogenic shock

Hypovolemic Shock

Obstructive Shock

Distributive Shock
Term
cardiogenic shock
Definition
inability of the heart to pump enough blood to supply all body parts. usually the result of severe left sided heart failure secondary to acute MI. Can also be secondary to cardiomyopathy, rupture of the papillary heart muscles, and end stage valvular disease. Reduced blood pressure, increased heart rate, pulmonary edema and increased respirations are characteristic
Term
hypovolemic shock
Definition
due to hemorrhage of bodily fluids, can be lost to interstitial space as well as lost outside the body. AMS, cool,pale,clammy skin, falling blood pressure and increased heart rate is characteristic.
Term
Neurogenic Shock
Definition
results from injury to the brain or spinal cord. Severe vasodilation causes relative hypovolemia due to loss of sympathetic nervous impulses. Warm,red,dry skin, low blood pressure, bradycardia are characteristic.
Term
Anaphylactic shock
Definition
Due to severe allergic reaction. Flushed skin, itching, hives, swelling, and breathing difficulty are characteristic. Causes massive vasodilation and can have severe airway involvement. Causes decreased blood pressure due to massive vasodilation and AMS is common.
Term
septic shock
Definition
caused by infection in the bloodstream. low blood pressure, febrile temperature, AMS and elevated heart rate are characteristic.
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