Pathophysiology of health problem
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describe the levels of prevention
1)premoridal: maintain good weight,e at healthy, excersie 2)primary: use medicine, stop smoking 3)secondary:diagnosis of clinical disease and non invasive interventions 4) tertiary: surgery, devices, rehab
What are syndemic factors?
When 2 or more factos merge and make the prognosis worse.
What are the 4 topics to study a disease
-symptoms: pt complaints -signs: -pathogenesis: natural history how a disease develops -etiology: cause of disease.
What is the point of specific treatment
directed at underlying cause.
What is clinical history composed of
-History of current illness: severity, symptms -Medical history:previous illness and gen health -Family history -social history: patients occupation, health habbits
What does sensitivity measure?
measures the threshold of detection.. For example a test that can detect a virus in 50 people is more sensitive than one that can detect it in 2000
What does specificity measure?
measures the ability to not get incorrect results from many different types of exams . For example if a covid test also tested positive if you had the flu would have poor specificity.
What is Radiopaque
Appears white on film; high-density tissues such as bone absorb most of the rays
What is Radiolucent
Appears dark on film; low-density tissues allow rays to pass through
Difference between MRI and CT scan
MRI depends on water/fluid has t1 and t2 types. CT depends on radiation
What are the advanatages of MRI over CT
does not use idonizing radiation can be used on children better imaging of cancer
What is PET scan
access biochemical functions in the brain
What do radioisotope studies do?
Study organ function by determining rates of uptake and excretion of substance labeled with radioisotopes.