Med Surg Exam 2 Flashcards
What is asthma?
A heterogeneous disease, usually characterized by chronic airway inflammation
What 3 things does asthma cause?
think patho
airway hyperresponsiveness
- mucosal edema
- mucus production
What does the inflammation of asthma lead to? (Symptoms)
cough
- chest tightness
- wheezing
- dyspnea
What group of people are most prone to asthma?
African Americans and hispanics
Is asthma reversible?
Yes
What is the biggest predisposing factor for asthma?
Allergies
What is the pathophysiology of asthma?
Mast cells, when activated, will release mediators (which are chemicals that contain histamine, bradykinin, etc.) that perpetuate the inflammatory response causing increase blood flow, vasoconstriction, fluid leak from vessels, attraction of WBC, mucus, and bronchoconstriction
During acute exacerbations of asthma, ____ occurs quickly to narrow the airway in response to an exposure
bronchoconstriction
What are the three most common symptoms of asthma?
cough
- dyspnea
- wheezing
When do asthma attacks occur most often?
At night or early morning
What Signs of progressing asthma exacerbations
- generalized wheezing,
- chest tightness,
- dyspnea
- sweating,
- tachycardia,
- widened pulse pressure,
- cyanosis,
- hypoxemia
What labs might you see during asthma episodes?
- Increased eosinophils in blood and sputum
- Serum levels of IgE if allergy is present
- Hypoxemia, hypocapnia, respiratory acidosis, from ABG/O2 Sat
- Increase PaCO2 if condition worsens
How do you prevent asthma?
Get tested and avoid triggers
- A detailed work history evaluation to identify occupational triggers
- Standard asthma meds
- Compensation systems
What are major complications of asthma?
Status asthmaticus
- Respiratory failure
- Pneumonia
- Atelectasis
Why do we give fluids to people with asthma?
They get dehydrated from sweating and insensible fluids loss with hyperventilation
What 3 things does primary treatment of asthma focus on?
preventing impairment of lungs function
- minimizing symptoms
- preventing exacerbations
What condition can substantially increase exacerbation of asthma and needs to be controlled?
Anxiety
What is the first choice of meds for quick-relief of asthma?
Short-acting bet-2 adrenergic agonists (albuterol, levalbuterol, pirbuterol).
- These relax smooth muscle
What meds do we give to patients who do not tolerate meds like albuterol well?
Anticholinergics like ipratropium
What are long acting control meds for asthma?
What classes
- Corticosteroids
- Long-acting beta-2 adrenergic agoists
- Leukotriene modifiers or antileukotrienes
- Phosphodiesterase inhibitors
- Immunomodulators
What kind of monitoring measures the highest airflow during a forced expiration and is given to moderate-severe asthma patients?
Peak flow monitoring
When does a tension pneumothorax occur?
When air is drawn into the pleural space from a lacerated lung or through a small opening/wound in the chest wall
What is different about tension pneumothorax compared to other forms?
The air that is breathed into the affected lung becomes trapped and cannot be expelled, causing a buildup of tension. This will cause the heart, trachea, and great vessels to shift to the unaffected side impacting both circulation and respiration
If the pneumothorax is small and uncomplicated, what s/s would you see
- sudden pain
- minimal respiratory distress
- slight chest discomfort and tachypnea