Chapter 1 OLD TEXTBOOK Flashcards
What are the four interrelated topics in pathophysiology?
- etiology
- pathogenesis
- clinical manifestations
- treatment implications
What is etiology?
the study of causes or reasons for phenomena
* identifies causal factors that provoke a particular disease or injury
What is idiopathic etiology?
the cause is unknown
What is iatrogenic etiology?
the cause results from unintended or unwanted medical treatment
What is a risk factor?
a factor that when present increases the likelihood of disease
What is pathogenesis?
the development or evolution of disease
* from initial stimulus to ultimate expression of manifestations of the disease
* description of how etiologic factors are thought to alter physiologic function and lead to development of clinical manifestations that are observed in a particular disorder or disease
What are clinical manifestations?
signs, symptoms, and syndromes
What is a sign?
objective or observed manifestations of disease
what you see
What is a symptom?
subjective feeling of abnormality in the body
feeling
What is a syndrome?
etiology of signs and symptoms has not yet been determined
* a collection of symptoms
What is the latent period?
the time between exposure of tissue to injurious agent and first appearance of signs and/or symptoms
* in infectious disease, it is called the incubation period
* also refers to a period during an illness when signs/symptoms temporarily become mild/silent/disappear
What is the prodromal period?
the time during which first signs and/or symptoms appear indicating onset of disease
What is the acute phase?
when disease or illness reaches its full intensity
What is the subclinical stage?
the patient functions normally; disease processes are well established
What is an acute clinical course?
short-lived, may have severe manifestation
What is a chronic clinical course?
may last months to years, sometimes following an acute course
What is exacerbation?
a suddent increase in severity of disease or signs or symptoms
What is remission?
a decrease in severity, sings, or symptoms.
may indicate the disease is cured
What is convalescence?
the stage of recovery after a disease, injury, or surgical procedure
What is sequela?
a subsequent pathologic condition resulting from an illness
What is statistical normality?
the estimate of diseases in a normal populations, based on a bell-shaped curve
What is reliability?
a test ability to give the same result in repeated measurements
What is predictive value?
the extent to which a test can differentiate between presence or absence of a person’s condition
What is sensitivity?
the probability that a test will be positive when applied to a person with a particular condition
e.g. percentage of patients with the disease misclassified as not having the disease * true positives + false negatives
What is specificity?
the probability that a test will be negative when applied to a person without a particular condition
e.g. the percentage of patients without a disease that are miclassified as having the disease - true negatives + false positives
What are individual factors?
- cultural factor
- age difference
- gender difference
- situational difference
- time variations