Disease Process & Inflammation Flashcards
What is Pathology ?
The study of DISEASE and the diagnosis of disease; pathos = suffering, feeling
What is PATHOPHYSIOLOGY ?
The study of the functional CHANGES caused by disease;
What is ETIOLOGY?
The study of causation; the CAUSE of disease/pathologies.
What is MANIFESTATIONS?
Indications or REPRESENTATIONS of disease.
What is COMPLICATIONS?
A SECONDARY disease, an accident, or a negativereaction occurring during the course of disease.
What is the SIGNS ?
An OBJECTIVE finding of disease (determined by healthcare professional).
What is SYMPTOMS?
A SUBJECTIVE finding of disease (determined by the patient).
PATHOLOGY: Flu PATHOPHYSIOLOGY: (Changes) ETIOLOGY: Virus (Cause) MANIFESTATIONS: (Indications) COMPLICATIONS: (Secondary) SIGNS: Cough, ———–, Fever (Objective) SYMPTOMS: Headache, Sore ———–(Subjective)
PATHOLOGY: Flu PATHOPHYSIOLOGY: Upper Respiratory Infection (Changes) ETIOLOGY: Influenza Virus (Cause) MANIFESTATIONS: High Fever (Indications) COMPLICATIONS: Pneumonia (Secondary) SIGNS: Cough, Sweating, Fever (Objective) SYMPTOMS: Headache, Sore Throat (Subjective)
What is EPIDEMIOLOGY ?
The study of health-determinant PATTERNS in society.
What is INCIDENCE? Measurement of the risk of
Measurement of the risk of developing a new condition in a given period of time; # of NEW CASES per population in a given period of time. Ie. How progressive a disease is.
What is PREVALENCE ? Measurement of total number…….
PREVALENCE Measurement of total number of cases of a new condition in a population; # of TOTAL CASES in a population divided by # of individuals in population. Ie. How common a disease is.
RISK The potential or ———— of developing a condition.
Chance
MORTALITY is —-
DEATH which measures of the number of deaths in a population during an interval of time.
MORBIDITY is ————-state
Morbidity is a diseased state which measures the amount of those in a diseased state in a population (often measured as incidence rate or prevalence rate).
What is Tissue Perfusion ?
* Delivery of arterial blood to the capillary bed of a tissue (capillary à tissue) * Measured in millilitres of blood per 100g of tissue * Allows oxygenation of tissue * Necessary for maintenance of cells/tissue
Decreased blood supply to a tissue and decreased tissue perfusion is called ?
(Ischemia)
A. Results in to tissue decreased B. Oxygenation and can lead to——-
A. (Hypoxia) B. Infraction
When blood is not properly delivered to the cells of the tissue, damage can occur to both the ——- and the surrounding ——————-
Cells and the surrounding interstitial fluid
Insufficient blood flow to affected region: renal, ————–, —————, or gast——-
cardiac, cerebral, gastrointestinal
malfunction of the Interstitial Fluid leads to
inflammatory response
Cell ithat lacks O2 leaves to——-
Ischemia, infarction/necrosis
Intravascular Fluid is——
The space contained within blood vessels. The main intravascular fluid is blood. That portion of the total body fluid contained within blood and lymphatic vessels.
Interstitial fluid is —–?
Interstitial fluid is a thin layer of fluid which surrounds the body’s cells. Interstitial fluid has become useful in the monitoring of glucose levels in people with diabetes
Interstitial fluid consists of———–?
Interstitial fluid consists of a water solvent containing sugars, salts, fatty acids, amino acids, coenzymes, hormones, neurotransmitters, white blood cells and cell waste-products.
Intracellular fluid is the place———–
Intracellular fluid is the place where most of the fluid in the body is contained. This fluid is located within the cell membrane and contains water, electrolytes and proteins. Potassium, magnesium, and phosphate are the three most common electrolytes in the ICF. It is the Fluid of Cytosol/Cytoplasm
What is Extracellular Fluid ?
TISSUE PERFUSION is Impaired due to the cause of ———————-?
1, Changes in blood circulation,
- Diabetes mellitus,
- Hypertension,
- Organ damage,
- Obesity/compression
The local effects of the TISSUE PERFUSION
edema (———————)
weakened pulse
——————— (especially in extremities)
damp/——————
changes in ———————
Eg. Chronic —————————-
Edema (water retention)
weakened pulse
numbness (especially in extremities)
damp/cold skin
changes in temperature
Eg. Chronic Venous Insufficiency
SYSTEMIC EFFECTS
of
Tissue Perfusion
—————-: mood swings/irritability, confusion,
lethargy, altered speech, slower pupil reaction to light
—————————: low urine output, high blood pressure, proteinuria
————————-: nausea, abdominal pain
——————-: chest pain, hypotension, changes in respiration
Cerebral: mood swings/irritability, confusion,
lethargy, altered speech, slower pupil
Reaction to light
Renal: low urine output, high blood pressure,
proteinuria
Gastrointestinal: nausea, abdominal pain
Cardiac: chest pain, hypotension, changes in
respiration
Compensation of the Tissues Perfusion Impaired
Alteration in arterial blood pressure (reninangiotensionpathway ——> ———— bp)
Vasodilation/vasoconstriction of blood vessels
Microvascular remodeling
Capillary ——————–
Alteration in blood ——————- (increase fluidity via inflammatory mediators)
Cell ——————- (cells commit suicide)
Alteration in arterial blood pressure (reninangiotensionpathway ——> increased bp)
Vasodilation/vasoconstriction of blood vessels
Microvascular remodeling
Capillary recruitment
Alteration in blood viscosity (increase fluidity via inflammatory mediators)
Cell apoptosis (cells commit suicide)
ISCHEMIA:
——————— blood supply to a tissue
————————- tissue perfusion
Results in decreased oxygenation to tissue (——————-)
Can lead to——————–
ISCHEMIA:
Decreased blood supply to a tissue
Decreased tissue perfusion
Results in decreased oxygenation to tissue (Hypoxia)
Can lead to Infarction
Premature cell death (Necrosis) due to prolonged ischemia (lack of blood and oxygen to cell tissue) ?
INFARCTION
Inadequate oxygen supply to the cells and tissue
Prolonged hypoxia can lead to Cyanosis
HYPOXIA
“The blue disease”
Blue colouration due to large amounts of
Deoxygenated hemoglobin (blood vessels become
Darker red ——-> appear blue through skin)
Most recognized on the lips (central) and
Extremities/fingernails (peripheral)
CYANOSIS
———————– CARRIES OXYGEN
THROUGHOUT THE BODY
HEMOGLOBIN
Hemoglobin is a protein in your red blood cells that carries oxygen to your body’s organs and tissues and transports carbon dioxide from your organs and tissues back to your lungs. If a hemoglobin test reveals that your hemoglobin level is lower than normal, it means you have a low red blood cell count (anemia)
Casues Of Systemic Hypoxia ?
—————- exercise
High ——————–
Deep-sea—————
Premature birth (lungs ———————)
———————– (due to respiratory arrest, opiates)
—————— (collapsed alveoli, lung damage)
Pulmonary ————-
Ane—-
————–monoxide poisoning, ———————– poisoning
Casue Of Systemic Hypoxia
Strenuous exercise
High altitudes
Deep-sea diving
Premature birth (lungs not fully developed)
Hypoventilation (due to respiratory arrest, opiates)
Heart shunts (collapsed alveoli, lung damage)
Pulmonary embolism
Anemia
Carbon monoxide poisoning, cyanide poisoning
Methemoglobinemia
HYPOXIA Effects – Mild S/S: Headache
Haadache
- *Fever**
Shortness of breath (SOB)
Euphoria
Nausea
Severe Effects of Hypoxia
Loss of ———————
Seizures
—————
—————- (blue)
——————- – if oxygen replaced by other toxin
Death
Loss of consciousness
Seizures
Coma
CYANOSIS (blue)
“cherry-red” – if oxygen replaced by other toxin
Death
Systemetic Compensation HYPOXIA
Most tissues –> ——————–
allows increased tissue perfusion to that specific tissue
Lungs ————————–!!
HPV –————————————————- —–> redirect blood flow from poorly ventilated lung areas to well ventilated lung areas
—————————————, ————————— (increase RBC’s), Acclimatization, etc.
Vasodilation
Vasconstriction
Hypoxic Pulmonary Vasconstriction
Hyperventilation, Polycythemia (increase RBC’s), Acclimatization, etc.
A non-specific reaction of the immune
system to a foreign invader is called
———————————————
INFLAMMATION
Typically a response of the vascular
tissue to a pathogen or harmful stimulus
(eg. vasodilation after laceration)
called ———————————-
INFLAMMATION
A protective response of the immune
system to eliminate pathogen/stimulus
and initiate the healing process
called————————-
INFLAMMATION
Inflammation the same as INFECTION
True or False
FALSE
Acute Inflammation Period is —————-
and it is called
Rapid onset, Short-course;
0-72 hours
SUBACUTE Inflammation – stage in between acute &
chronic phase; 72hr—————————–
72 hrs -3 months