Week 2 : Nursing interventions for patients with altered gas exchange Flashcards
concept extension : gas exchange
what is the basic concept of 02 and C02 and how it contributes to gas exchange?
02 is transported to the cells and C02 away from cells ( via the bloodstream)
what does gas exchange require interaction between ?
interaction between neurologic, respiratory, and cardiovascular systems
what are the 3 important terms we must know in gas exchange.
ventilation
diffusion
perfusion
what is the definition of ventilation?
the process of inhaling oxygen into the lungs and exhaling carbon dioxide from the lungs
what are some examples of altered ventilation?
COPD ( bronchitis ), cancer, chest trauma
what is the definition of diffusion?
the movement of gases down their concentration gradients across the alveolar and capillary membranes
what are some examples of altered diffusion ?
copd ( emphysema ) lung infection
what is the definition of perfusion?
the ability of blood to transport oxygen containing hemoglobin to cell and return carbon dioxide containing hemoglobin to the alveoli
what is this describing : the ability of blood to transport oxygen-containing hemoglobin to cells and return carbon dioxide-containing hemoglobin to the alveoli
perfusion
what are some examples of altered perfusion?
pulmonary embolism, heart failure
what is this describing : interruption of the blood flow into the lungs . BONUS : what is the biggest example.
altered perfusion
biggest example : pulmonary embolism
what are some important ideas when it comes to gas exchange ** sees in the slide **
hypoxia, and hypercapnia
decreased gas exchange results in what ? ( name one )
inadequate transportation of 02 to body cells ( hypoxia )
- results in cell necrosis and death
recall that decreased gas exchange results :inadequate transportation of 02 to body cells ( hypoxia )
- results in cell necrosis and death.
what else ?
build of c02 combines with h20 to produce carbonic acid . ( Hypercapnia )
- results in respiratory acidosis and acid base imbalance
what is the value that is considered as hypoxemia
( oxyegnation failure )
Pa02 < or equal to 60 mm Hg on 60% oxygen
what is considered ( value ) as a hypercapnic ? ( ventilatory failure )
PaC02> 45 mm hg and pH <7.35
what is a intrapulmonary shunt vs a dead space ventilation ?
intrapulmonary shunt
perfusion without ventilation ( V=0 )
description : decrease in ventilation such as pulmonary edema and ARDS
pneumonia or atelactasis
what does VQ stands for ?
ventilation for v
perfusion for q
what is considered as normal ?
v and q matched
what is a dead space ventilation ?
ventilation without perfusion ( Q = 0)
decrease in perfusion - segmental PE
decrease in pefison - massive pulmonary embolism , right to left shunt severe pulmoanry arterial hypertension ( PAH )
think about why your patient is short of breath. what is happening that is causing this ? name one exmaple set in the slides
pneumonia affects gas exchange because alveoli are filled with infectious fluid causing inadequate ventilation
recall : pneumonia affects gas exchange because alveoli are filled with infectious fluid causing inadequate ventilation. what else is happening that might be causing shortness of breathe of your patient ?
High cervical spinal cord injury has decreased ventilation due to damage to the spinal nerves that control the diaphragm.
what would be the cause of inadequate ventilation ? ( name one in the slides )
mva with chest being crushed by steering wheel
true or false. COPD is not an example of inadequate ventilation?
false, it is.
explain copd and how it can cause inadequate ventilation
secretions that can narrow the airway/destruction to the alveoli
altered ventilation or diffusion is damaged
true or false. trauma / injury to function of the respiratory system
lung muscle itself ( this is going to cause problem to ventilation ) only coming in if the lung can expand
true
as we recall from last week recognizing , analyzing, prioritizng/planning, and taking action along with evaluating is important.
what should we look upon when we are recognizing those cues?
patient history
there age, and environment ( areas of high pollution, highly populated areas, extremes in weather, aging increases risk )
what elsee shoud we be recognizing as nurses when our patient has altered gas exchange ?
recall we know about patient history, age, and environment . What else ?
respiratory hx, smoking, vaping, drug use, travel, allergies
true or false. family hx and genetic risk ( questions such as is their any respiratory illnesses that run in family ( asthma ) that we should know when it comes to recognizing cues to our pt who happen to have altered gas exchange ?
true
apart from recognizing the patient’s history what else is important ?
patient symptoms this is still apart of that recognizing cues and altered gas exchange.
what are signs of altered gas exchange ?
changes in RR, o2 sats, RR pattern
abnormal breath sounds
cough +/- sputum
dyspnea/orthopnea/chest pain
true or false. it is important to listen to bilateral and upper and lower lobes ( to hear airway entry )
true
true or false. a patient who has altered gas exchange , there breathing is worst when they lay own, therefore what should our non pharmacological intervention be ?
needing pillows to put their head up
what else are signs of altered gas exchange?
cyanosis, anxious ( could be red as well )
anxious/eyes are big
nervous
apart of recognizing cues : is analyzing data
what would you look for in your assesment ?
vital signs
inspection
palpation
is there any work of breathing ?
recall that within recognizing cues comes with analyzing data
what type of diagnostic tests should we be looking at for someone who has an altered gas exchange ?
ABGs
cbc ( rbc, hgb)
sputum culture
skin ( tb )
imaging ( cxr, Ct, Vq scan )
bronchoscopy*, thoracentesis
true or false. symmetry , should expand symmetrically ( if not further investigation is required) bonus: what could this indicate?
true and could indicate trauma
what is this describing ? common test to see a respiratory disroder
thoracentesis
define the scientific deinfition for thoracentesis
needle aspiration of pleural fluid or air from the pleural space
what could be happening if there is fluid in the pleural space?
interfering with ventilation if there are fluid pressing on them
what is alectasis?
collapsed of the lung
what could be happening post procedure ( thoracentesis )
cxr
vital signs ( make sure there is air entry , make sure to check bilaterally )
assess lung sounds
risks : infection, tension pneumothorax
why would we want a chest xray after thoracentesis?
to see if anything is damaged
what position would help breathe better for a pt?
tripod position ( leaning over the bedside table )
what is tension pneumothorax?
opening in the pleural space in which allows air in , causing it to collapse - this is a big respiratory problem
what is the worst case scenerio that could happen to a pt who has an altered gas exchange?
worse case scenario is resp failure
resp failure could be due to what ?
ventilation failure, oxygenation failure or combination of both
what are mild, moderate, and severe impairment like ?
mild impairment –> changes to vital signs
moderate impairment –> changes to blood work
severe impairment –> changes to tissue perfusion
what could we do as inteventions when we have mild impairment ?
change position
for a moderate impairment we could measure P02 by abg
true
for severe impairment what do we see?
changes in tissue perfusion ( things like cyanosis )
what stats drops too much - changes in _____ can indicate what ?
blood work ( hypoxemia )
the value we consider is sats below 92%
P02 is less than 60
what is an example of urgent problem ?
pulmonary embolism
what is pe ?
blockage of pulmonary artery by thrombus ( dead space )
commonly caused by dvt that breaks off and travels to lungs
what can pe be caused by ?
caused by fat embolism, can cause by air, commonly the reasonhas dvt and broke off and travelled to the lungs
what are the symptoms of pe
sudden onset of dyspnea, stabbing chest pain, apprehension, restlessness, cough, hemoptysis, crackles, abnormal lung sounds, diaphoresis, increase in RR, increase in HR, increase in temp, and decrease in 02 sats , petechiae over chest
true or false. decrease air entry in one entry , crackles can be caused by fluid. there is fluid due to inflammation as damage tissues causes inflammation.
true
why might you be feeling sharp and stabbing chest pain when you have pe
this is ishcemia ( we have it in the lungs ) there is tissues that is not getting perfusion
altered gas exchange : take action
what can we do ?
there are 5 things we need to remember
- optimize oxygenation
- optimize ventilation
- administer medications
- manage secretions
- optimize nutrition
what should we do if the gas exchange is not working , and we need intervention
oxygen
nasal prongs
face mask
bag with non debrief
[pressurize oxygen
do not add humidity to non debrief
what is a pressurize oxygenation
force into the lungs, into the airways if none has worked based on the oxygenation saturation
optimizing oxygeneation is important what undergoes this characteristic ?
monitor oxygen saturation , supplemental oxygen as needed
nasal prongs–> masks
what should u do if u are increasing the oxygen of your patient
if you are increasing their oxygen , you need to notify someone ( that pt is detoriating )
Which statements about oxygen and oxygen therapy are true? Select all that apply.
* A. Clients must provide informed consent to receive oxygen therapy.
* B. Excessive oxygen use is a contributing cause of chronic obstructive pulmonary disease.
* C. In nonemergency situations, a health care provider’s prescription is needed for oxygen therapy.
* D. Oxygen can explode when handled improperly.
* E. Oxygen is a beneficial element but can harm lung tissue.
* F. Unless humidity is added, therapy with oxygen dries the upper and lower mucous membranes.
c, e, f
The nurse is caring for a client with a possible pulmonary embolism who has symptoms of chest pain and difficulty breathing. The nurse assesses a heart rate of 142, BP 100/60 mm Hg, and respirations of 42 breaths/minute. Which of the following actions should the nurse implement first?
a. Elevate the head of the bed to 45–60 degrees. b. Administer the ordered pain medication.
c. Notify the client’s health care provider.
d. Offer emotional support and reassurance.
a
altered gas exchange : take action
what can we do ?
what undergoes optimizing ventilation
positioning
breathing techniques
incentive spirometry
exercise therapy
mechanical ventilation
surgeries/procedures
what is the best position that allows for maximum lung expansion?
tripod position