Prevention Flashcards
COPD diagnosis, look at FEV1/FVC. Obstructive lung disease present at less than __% when compared to others
70%
Tertiary prevention for COPD is to
Get patient to stop smoking
3rd leading cause of death in the world is:
COPD
2nd leading cause of death in the world is:
Stroke
1st leading cause of death in the world is:
Ischemic heart disease
After quitting smoking, HR normalizes after __ minutes, CO levels normalize after __ hours, risk of MI falls and lung function returns to normal curve after __-__ weeks, risk of CAD is 50% that of a smoker after __ year(s).
20 minutes
12 hours
2 - 12 weeks
1 year
Symptoms of nicotine withdrawal
Depression, insomnia, irritability, anxiety, impaired concentration, appetite changes
Smoking cessation can involve behavioral counseling, as well as (4) described alternative therapies:
Acupuncture, aversive therapy, financial incentive from employers, hypnosis
Five A’s of smoking cessation:
Ask (about use every visit) Advise (quitting) Assess (willingness) Assist (in attempt to quit) Arrange (follow up)
7 options recognized by USPHS for smoking cessation:
Nicotine patch, gum, lozenge, inhaler, nasal spray
Bupropion
Varenicline
Action of bupropion
Enhances CNS release of dopamine
Action of Varenicline
Partial agonist of a4-B2 nicotine content acetylcholine receptor
Medications to limit disability of COPD
Short acting beta agonists (albuterol, lee albuterol)
Anticholinergics (ipratroium)
Long acting beta agonists
Long acting anticholinergics/antimuscarinics (tiotropium)
Corticosteroids
Best: LABA, LAMA, ICS combination
PDE-4 inhibitors
Theophylline
supplemental O2
Pneumococcal and influenza vaccinations
Supplemental oxygen improves survival for COPD for patients and is recommended for those with:
RA pulse ox less than 88%
PaO2 less than 55mmHg on RA
PaO2 less than 60mmHg with for pulmonary or polycythemia
Pulmonary rehab indicated in moderate to severe COPD and benefits may last up to:
18 months after rehab
Lung Volume Reduction Surgery provided survival advantage for COPD patients with:
Upper lobe emphysema and low exercise capacity
Some increased mortality
Lung transplant for COPD patients improves FC and should be considered in patients with:
Post-bronchodilator FEV1 less than 25% predicted
Resting hypoxemia
Hypercapnia
Pulmonary HTN
Diagnosing asthma with bronchodilator, FEV1 improves:
More than 15%
Diagnosing asthma, methocholine challenge drops FEV1:
More than 20%
Tertiary prevention for asthma involves:
Avoiding triggers and preventing or treating exacerbation a
Persistent moderate asthma:
exhibits symptoms _______
Night time awakenings _______
Short acting beta agonist _________
Interferes with normal activity _________
Lung function FEV1 is between __% and __%
Daily More than once a week Daily Some limitation 60% and 80%
Steps 1 - 6 for intermittent thru persistent asthma treatment:
1) SABA PRN
2) low dose inhaled glucocorticoids
3) 2 plus LABA or medium dose
4) medium dose glucocorticoid plus LABA
5) high dose glucocorticoid plus LABA and maybe omalizumab if allergies present
6) high dose glucocorticoid, LABA, oral systemic glucocorticoid.
Healthcare practitioners collect data on a single patient, epidemiologists:
Collect data on an entire population
Classical epidemiology: population oriented. Interested in:
Risk factors that can be altered to prevent or delay disease,min jury, and death.
Clinical epidemiology: patient oriented. Interested in:
Prevention and care of illness in individual patients at risk for or already have a disease.
Etiology
Cause or origin of a disease or abnormal condition
The way a disease progresses in the absence of medical or public health intervention is called
Natural history
Name agent, host, and environment for measles
Agent: highly infectious virus
Host: human
Environment: population of unvaccinated people
Name agent, host, environment, and vector for malaria
Host: human
Agent: parasite
Environment: General patient population
Vector: anopheles mosquito
BEINGS model (major categories of risk factors for disease)
Biological and behavioral Environmental Immunologic Nutritional Genetic Services, social factors, spiritual factors
Of the BEINGS model, an immunologic factor can be herd immunity which means
Vaccine diminishes ability to spread disease, leads to reduced disease transmission
The framework of examining people not as individuals but as members of communities in a social context is called
Ecological perspective
Number of new health related events in a defined population within a specific period of time is known as:
Prevalence
Proportion of people who experience the onset of a health related event during a specified time is known as:
Incidence proportion
Rate at which new events occur in a population is known as the:
Incidence rate
The number of existing cases in the total population at a specific point or period in time is the:
Prevalence
The prevalence of disease at a certain point in time is the:
Point prevalence
The number of cases that exist during a specific time period is the:
Period prevalence
Incidence or prevalence: existing cases that allow us to measure the burden of disease in area
Prevalence
Proportion of persons who are unaffected at the beginning of the study period, but who experience a risk event during the study period indicates what for the population?
Risk
People at risk at the beginning of the study period constitute the:
Cohort
Calculating rate of disease:
Number of events in defined time period/average number of people at risk for event
Rate can be used to estimate risk if the following are true about the frequency of event in numerator, proportion of population affected, and time interval:
Frequency: only occurs once in study interval
Proportion: is small
Time interval: is short
Calculating positive predictive value (PPV):
Number of true positives/number of all positives
Gives chance of positive test being a true positive.
Technical precision has high specificity and high sensitivity, but for a test to be a good one, it must have good:
Clinical precision
To calculate true positives:
with true disease x sensitivity
To calculate false negatives:
with true disease - true positives
To calculate true negatives:
without disease x specificity
To calculate false positives:
without disease - true negatives
To calculate # with true disease:
Prevalence x n
Sensitivity is defined as:
Number of true positives over true positives plus false negatives
Specificity is calculated as:
True (-) / false(+) + true(-)
SpPin
High specificity, positive test rules in disorder
SnNout
High sensitivity, negative rules out disorder
Which healthcare workers are at the highest risk for needle sticks?
Nurses, lab workers, non surgical physicians, non clinical lab techs
Modes of occupational transmission of HIV
Per cutaneous
Contact of mucous membranes or non intact skin
If visible blood: feces, nasal secretions, saliva, sputum, sweat, tears, urine, vomitus.
Chance of transmission from source patient to exposed patient
- 03% percutaneous
0. 09% mucous membrane
How long is Post Exposure Prophylaxis for HIV given?
28 days
PEP for HIV involves 3 active agents:
Raltegravir (400mg PO BID)
Truvada (1 PO daily, Tenofovir and emtricitabine)
Follow up testing after baseline HIV test:
Baseline CBC and LFTs at baseline/two weeks if initial studies are abnormal