Respiratory Flashcards
1
Q
age related differences in A&P
A
- chest wall and respiratory muscles:
- ribs and sternum are toopliable to use intercostal muscles
- diaphragmatic breathers until 7 yo
- AP diameter inc
- airways:
- infants airways are 1/4 the size of adults, so any inflammation of airway will cause problems
- alveoli/parenchyma:
- neonates have 20 mil alveoli which inc to 300 mil by 8 yo
- WOB: paradoxical chest movements
- inc O2 consumption b/c of inc metabolic rate, inc HR, inc RR
- infants need 6-8 mL/kg/min vs adults 3-4 mL/kg/min
2
Q
if you have varying children with respiratory issues, which one do you see first?
A
- the youngest–b/c they will deteriorate the fastest
3
Q
clinical manifestations of respiratory alterations
A
- changes in LOC: restlessness
- alteration in perfusion: dec O2 sats, cyanosis/pallor (color changes)
- cough: if present, worried about chlamydial pneumonia
- dyspnea
- tachypnea
- tachycardia
- grunting (late sign of compensation)
- retractions
- stridor/wheezing
- nasal flaring
- intercostal bulging (air trapping)
- chest pain
4
Q
stridor vs. wheezing
A
- stridor: upper airway affected
- see w/ croup
- high pitched, noisy respiration
- indicates narrowing of upper airway
- can be inspiratory or expiratory
- wheezing: bronchioles affected (lower airway)
- continuous musical sound originating from vibrations in lower airways (bronchioles)
- typically heard on expiration
5
Q
respiratory distress
A
- early recognition very important
- distress is marked by inadequate elimination of CO2 or decrease in O2
- resp assessment:
- LOC
- RR
- WOB: can be inc by inflammation or excessive mucus
- color of skin/mucous membranes
6
Q
grunting
A
- late sign of sompensation
- body’s attempt to create positive end expiratory pressure (PEEP)
7
Q
retractions
A
- sinking in of soft tissues–indicates use of accessory muscles in an attempt to improve respirations
8
Q
respiratory assessment in a healthy infant
A
- response to environment: looking around, pink
- color of skin, mucous membranes
- accessory muscle use should be absent or minimal
- work of breathing
- normal breath sounds
9
Q
indications of mild respiratory distress
A
- retractions–sub or intercostal
- color changes: pink–>pale–>slight circumoral cyanosis
- nasal flaring
- response to envinronment: may not be as alert
10
Q
indications of moderate to severe respiratory distress
A
- LOC and response to environment: listless, lethargic
- retractions
- color changes: circumoral–>dusky–>cyanotic
- breath sounds: inc wheezing/stridor
- changes in O2 sats: decreased
- head bobbing
- indicates an exhausted infant
- sign of dyspnea
- use of scalene and SCM muscles–head bobs with each inspiration
11
Q
nasal cannula
A
- 2 short plastic nasal prongs: delivers 25-45% at 1-6 L/min
- usually don’t go above 5 on kids
- always humidify O2
- if in distress, always start as high as you can w/ that apparatus then titrate down
- make sure HR decreases as you add O2
- O2 delivery: 4% O2/L
- 0 L=21% RA
- 1 L=25%
- 2 L=29%
- 3 L=33%
- 4 L=37%
- 5 L=41%
- 6 L=45%
12
Q
oxygen mask
A
- poorly tolerated by infants/toddlers
- delivers 35-60% oxygen at 6-10 L/min
- RA entrained during inspiration
- reduced oxygen concentration if:
- high spontaneous inspiratory flow
- mask is loose
- oxygen flow into mask is low
13
Q
oxygen face tent/shield
A
- high flow soft plastic “bucket” over nose and mouth
- better tolerated than face mask
- delivers only 40% O2 at 10-15 L/min
14
Q
PaO2 (mmHg) vs. SaO2 (%)
A
- PaO2=SaO2 (%)
- 100=98%
- 90=97%
- 80=95%
- 70=93%
- 60=90%
- 50=84%
- 40=75%
- 30=60%
- 20=35%
- 10=14%
15
Q
chest physiotherapy
A
- postural drainage: want to try to loosen up secretions so child can cough out or suction out secretions
- percussion: cupping to loosen secretions
- vibration
- incentive spirometer
- breathing exercises
- suctioning
- if child has a lot of secretions, need to pay attn to hydration status
16
Q
Asthma
A
- wheezing occurs due to constriction of the lower airways
- higher incidence in African Americans and children who are overweight
- have to educate client about having albuterol on them at all times
- teach about maintenance vs. rescue drugs
- need to teach the client about asthma triggers:
- pollen, dust mites, mold, pet dander
- teach about using peak flow meters
- if on any corticosteroids as an anti-inflammatory: concerned about immunsuppression, may have salt cravings, and do not d/c the meds abruptly
17
Q
peak flow meters
A
- measure peak expiratory flow rate (PEFR) which is the maximum flow of air that can be forcefully exhaled in 1 second
- child’s personal best PEFR should be measured when asthma is stable
- GREEN: 80-100% of child’s best–>no symptoms, continue maintenance tx
- YELLOW: 50-79% of child’s best–>an acute exacerbation may be occurring–maintenance therapy may need to be inc
- may need to call practitioner if stay in this range
- RED: <50% of child’s best–>signals a medical alert b/c airway narrowing is occurring
- short acting bronchodilator should be administered
- notify HCP immediately if PEFR does not return to and stay in yellow/green