Week 4 Respiration Flashcards
What flow range can you administer with a Nasal Cannula?
- 1L-2L (24-30%)
- 3-4L (30-38%)
- 5-6L (38-44%)
When do you attach a humidifier for NC?
>4L flow rate
What is the flow range for a Simple Face Mask?
8-12L (35-60%)
6-10L?
What is the flow range for a partial non-rebreather?
6-10L (40-60%)
What is the flow range for a 100% non-rebreather?
8-15L (60-100%)
Venturi Mask flow range?
- Varies w/ adapter valve (24%-65%)
- 2-15L
- Usually percentages are used not LPM
What are some risks that result from various O2 therapies?
- NC can cause skin break down behind ear
- Dry air can irritate nose
- All mask type O2 devices can have a risk of aspiration if pt is nauseous and throws up with mask on
What is Asthma?
- Disorder of bronchial airways
- Periods of reversible bronchospasm
What is the etiology and risk factors of Asthma?
- May be inherited
- Environmental factors: allergens, smoke, foods, dust, etc
- excitatory states
- exercise
- changes in temp
- strong odors
What does a patient w/ asthma undergo (clinical manifestations)?
- Shortness of breath (dyspnea)
- chest tightness
- wheezing on expiration
- WOB
- nasal flaring
- accessory muscles
What is the pathophysiology of Asthma?
- Chronic inflammation
- mucosal edema/secretion
- airway inflammation
How and why does airway constriction and capillary dilation occur?
- mast cells release chemical mediators of inflammation (histamine and prostaglandins for ex) inducing capillary dilation to attempt to wash away allergen
- Same chemicals also promot bronchoconstriction to close airway in attempt to prevent inhalation of more allergen
What is the difference between the late and early phase of Asthma?
- In general both have chemical mediators that induce an airway response
- In late phase, however, other inflammatory cells are attracted that create a self-sustaining cycle of obstruction and inflammation
- causes hyper responsiveness of airways to triggers such as cold weather
- delayed rxn
Why does the O2 sat of an asthma patient still remain normal?
- issue w/ air trapping
- can inhale not exhale for the most part
What are the classifications of Asthma?
- mild intermittent (< 2x per week)
- mild persistant (>2x per week, <1 per day)
- moderate persistent (daily, affects activity)
- severe persistent (contiual symptoms, frequent exacerbations)
- status asthmaticus (severe, life threatening, unresponsive to meds, paradoxal pulse, pneumothorax, acidosis can begin, cardiac arrest)
What things do we need to address in order to medically manage asthma patient?
- airway spasm
- mucous production
- inflammation
How can you reverse airway spasm in asthma pts?
- administer Beta-agonsists
- dilate airways
- nebulized atropine
- anticholinergic blocks parasympathetic system
- IV steroids
- decrease inflammation
How can you control inflammation in Asthma pts?
- inhaled corticosteroids
- prevents mast cell from emptying/ attracting inflammatory mediators
- reduces edema/spasms
- mast cell stabilizers
- surpresses bronchoconstrictive substance release
- leukotriene modifiers
- block action of leukotrienes (cause of smooth muscle constriction, vascular permeability, edema or airway mucosa, and attract eosinophils which promote inflammation
What are three possible nursing diagnoses for Asthma?
- ineffective breathing pattern
- ineffective airway clearance
- impaired gas exchange
What outcomes would result from the RN Dx of ineffective breathing pattern?
- improved breathing patterns
- RR w/n normal limits
- decreased dyspnea
- ” nasal flaring
- ” accessory muscles
- “anxiety
- return of ABG levels
What are outcomes for the RN Dx ineffective airway clearance?
- client will have effective airway clearance AEB decreased inspiratory/expiratory wheezing/ other breath sounds, and decrease coughin
- regular RR
What are the outcomes for the RN Dx impaired gas exchange?
- adequate gas exchange w/ O2 sat >94%/ PaO2 >80%
- normal skin color
- same as ineffective airway clearance
What are possible interventions for RN Dx of ineffective breathing pattern?
- assessment
- position of comfort: semi-fowlers position
- O2 therapy
- nebulizer treatment
What are the possible interventions of RN Dx of ineffective airway clearance?
- suctioning
- sputum eval/culture
- encourage fluids
- position changes
- oral care
What are the possible interventions of RN Dx impaired gas exchange?
- monitor pulse ox
- assess lung sounds
- O2 therapy
- admin meds
- reassess
What are some medications for asthmatics?
-
Albuterol
- rescue Inhaler
-
Salmeterol
- long acting inhaler
-
Fluticasone
- inhaled corticosteroid
-
Cromolyn
- mast cell stabilizer
-
Singular
- leukotriene modifier
What is the etiology and risk factors for chronic bronchitis?
- irritants in cigarrette smoke
- chronic respiratory infections
- sinusitis
- bronchitis
What is the pathophysiology of chronic obstructive bronchitis?
- Inflammation of bronchi
- Mucus
- chronic cough
- 3months of year for 2 years
- Decreased FEV1/FVC ratio
- Increase in size and number of submucous glands
- Increased number of goblet cells
- Impaired ciliary fxn
What causes the SOB in chronic bronchitis?
- airways collapse because of thick mucous and inflamed brochi
- reduced alveolar ventilation
- increase PaCO2 retention
- decrease PaO2
Why would a patient with bronchitis be more susceptible to infection
- impaired mucociliary fxn
- causes even more mucous production and thick inflamed bronchial walls