Oxygenation Flashcards
why does older age affect resp function?
chest becomes less elastic
air exchange decreases
cough reflex decreases
mucous membranes become drier
immune system weakens
more GI reflux disease, more at risk for aspiration
stone blasters can get…
silicosis
coal miners can get…
black lung disease, anthracosis
sedentary pts lungs have…
lack of expansion
drugs c effects on resp
sedatives or hypnotics
antianxiety drugs
how does stress affect resp
can cause hyperventilation - causes arterial blood O2 to rise and CO2 to fall - tingling, numbness, lightheadedness
when hyperventilating, tell pt…
breathe into your hands to keep more CO2
respiratory center
pons
medulla oblongata
chemoreceptors respond to…
blood H+ concentration
Increased ___ most strongly affects stimulation of respiration
CO2
hypoxic drive
lack of O2 affects respiration more stongly than CO2
4 ways respiration can be altered
Patency
Movement of air into & out of lungs
Diffusion of resp. gases
Transport of resp. gases to and from tissues via blood
extreme inspiratory effort c no chest movement
completely obstructed airway
potential causes of completely obstructed airway
anaphylaxis
burned airway
hypoxemia compensated for by…
increased HR & cardiac output
s/s hypoxia
rapid HR; rapid shallow respirations; dyspnea; restlessness or lightheadedness; flaring of nares; substernal of intercostal retractions
interventions for cyanosis
put nasal cannula c oxygen on s order - then call physician
elements of physical respiratory assessment
Rate, depth, quality, rhythm of respirations
Inspect variations of shape of thorax
examples of resp diagnostics
Sputum specimens
Throat cultures
Visualization procedures (imaging)
Venous & arterial blood specimens
Pulmonary function tests
pt risks/problems with breathing problems
skin and tissue breakdown
syncope
acid-base imbalances
feeling of hopelessness
social isolation
implementations for nurses - resp problems
promoting oxygenation
educating pt about coughing/respiration
encouraging deep breathing/coughing
pt hydration
medications
how to promote oxygenation
position pt for maximum chest expansion
encourage or provide frequent position changes
encourage deep breathing & coughing
encourage ambulation
implement comfort meastures
how does ambulation help breathing?
breaks up mucus
huff coughing
pt leans forward and exhales sharply with huff sound during mid-exhalation
pursed lip coughing
pt breathes normally through nose, then exhale with pursed lips slowly while tightening abdominal muscles to assist c exhalation
how much fluid for resp issues?
as much as pt can tolerate
why is hydration important for resp issues?
thins secretions
when dehydrated, secretions become tenacious
pt use this med first, and then this
bronchodilator
anti-inflammatory inhaler
break up mucus, making it easier to expectorate sputum
expectorants
expectorant example
gauifenesin
postural drainage position
prone - pillows under abdomen
pt spends ____ in postural drainage
20 mins
exercises used on pts in postural drainage
percussion
vibration
cupped hands - tap pt’s back quickly, firmly
percussion technique
hands like in CPR - send fine vibrations on pt’s back - when pt exhales, not inhales - give pt commands of when to inhale/exhale
vibration technique
nurse may initiate O2 s an order when?
emergency - then call PCP
usually low-liter, low flow - no humidifier
portable wall unit
when using O2, pts should wear…
cotton
Delivers low concentration - 25% to 45% O2 - flow rate from 2-6 L/min
nasal cannula
pts with nasal cannula may need ___ to prevent skin breakdown
padding behind ears
Stores O2 & delivers 100% O2
Humidification not necessary
reservoir cannula
Covers nose & mouth
Delivers 35% to 65% O2 - flow rate 8-12 L/min
Exhalation ports on side of mask
simple face mask