Test 2, Ch 10 and 11 Flashcards
Patient Protection and Affordable Care also called……….. was made law in 2010 and came into effect in
Affordable care Act (ACA) ; 2014
One of the earliest effects of ACA was to institute a system whereby hospitals would be
penalized for wasteful excessive use of resources
There are 7 index conditions that are monitored as pat of ACA. 5 of them involve respiratory therapy
- acute PNA
- COPD exacerbation
- VAP
- CHF/ pulmonary edema
- myocardial infarction
Excessive use of resources , results in a longer
length of stay (LOS)
Therapist driven protocols goal is to
- deliver individualized diagnostic and therapeutic respiratory care to pts
- assist physician w/ evaluating pt’s respiratory care needs and optimize the allocation of respiratory care services
TDP’s give therapist specific authority to (3)
- gather clinical information related to the pt’s respiratory
- make assessment of clinical data collected
- start, increase, decrease, or discontinue certain respiratory therapies
TDP safe and ready will be qualified to
- collect approbate data
- formulate a uniform and accurate assessment
- select a uniform and optimal treatment plan with the limits set by the protocol
The essential knowledge base for a successful TDP programs includes (ms roach fav word)
- anatomic alterations of the lungs
- pathophysiologic mechanism activated
- clinical manifestations
- treatment modalities used to correct them
What fixes pulmonary edema
fixing the heart and diuretics ( lasix)
What fixes bronchospasm
bronchodilator
what fixes a pt that’s not oxygenated well
oxygen
If pt comes wheezing what clinical manifestations could it possibly be?
Bronchospasm or bronchconstriction issue
If pt comes in with crackles and feet swelling what clinical manifestations could it be?
CHF, pulmonary edema
Assessment skills you need
SOAP
1.systemically gather clinical information
2. formulate an accurate assessment
3. select a treatment
4. document the use and evaluation of this process
Clinical data: for increased breathing rate , bp, pulse
Assessment: Respiratory distress and dyspnea
What is the treatment
Treat underlying cause
Clinical data: Wheezing
Assessment: Bronchospasm
Treatment :
Bronchodilator treatment
Clinical data: Inspiratory stridor
Assessment:Laryngeal edema
What is the Treatment:
Racemic epi
Clinical data: Coarse crackles
Assessment: Secretions in large airways
What is the Treatment?
Airway clearance therapy
Clinical data: Fine and medium crackles
Assessment: Secretions in distal airways
What is the Treatment?
Treat underlying cause such as CHF; Hyperinflation therapy
Clinical data: strong cough
Assessment: Good ability to mobilize secretions
What is the Treatment?
None
Clinical data: Weak cough
Assessment: Poor ability to mobilize secretions
What is the Treatment?
Airway clearance therapy
Clinical data: Secretions > 25 mL/ 24 h
Assessment: Excessive bronchial secretions
What is the Treatment?
Airway clearance therapy
Clinical data: White and translucent sputum
Assessment: Normal sputum
What is the Treatment?
None
Clinical data:Yellow and opaque sputum
Assessment: Acute Airway infection
What is the Treatment?
Treat underlying cause
Clinical data: Green sputum
Assessment: Old retained secretions and infections
What is the Treatment?
Airway clearance therapy
Clinical data: Brown sputum
Assessment: Old blood
What is the Treatment?
Airway clearance therapy
Clinical data: Red sputum
Assessment: Fresh blood
What is the Treatment?
notify physician
Clinical data: Frothy secretions
Assessment: pulmonary edema
What is the Treatment?
Treat underlying cause, such as CHF; hyperinflation therapy
Clinical data:Bronchial breath sounds
Assessment: atelectasis
What is the Treatment? (2)
Hyperinflation therapy, oxygen therapy
Clinical data:Dull percussion note
Assessment: infiltrates or effusion
What is the Treatment?
Treat underlying cause
The ability of the respiratory system to establish and maintain adequate o2 up take and carbon dioxide removal from the body
Respiratory failure
Abg criterial for respiratory failure in a. normal individual is Pao2
PaO2 < 60 mm Hg, PaCo2 > 50 mm Hg or mixture of both
Respiratory failure is commonly classified as (3)
- hypoxemia respiratory failure ( type I respiratory failure pao2 <60)
- hypercapnic respiratory failure ( type II respiratory failure co2 >50)
- combination of both
Ventilation =
co2
Oxygentaion =
po2
Anything related to co2 is
ventilatory failure
hypercapnic respiratory is commonly called VF is classified as 2 different categories
- acute ventilatory failure (uncompensated high paco2 and low pH)
- chronic ventilatory failure (compensated high paco2 and normal pH)
Alveolar hypoventilation is classified as __________ paco2 and __________ pao2
- increased PaCO2
- decreased PaO2 (hypoxemia)
Common causes for Alveolar hypoventilation (6)
- head trauma
- pain
- sleep apnea
- COPD
- obesity
- neuromuscular disorders
Cor pulmonale=
right sided heart failure
CHF =
left sided heart failure
What is the treatment for alveolar hypoventilation
primarily Ventilatory support
Portion of the cardiac output that moves from the right side to the left side without being exposed to alveolar o2
Pulmonary shunting
What are the 2 types of shunts
Absolute and relative
6 basic anatomic alterations that can cause respiratory failure
1.atelectasis
2. alveolar consolidation
3. increased alveolar- capillary membrane thickness
4. bronchospasm
5.excessive bronchial secretions
6. distal airway and alveolar weakening
Absolute shunts ( true shunts) are classified into 2 groups
anatomic and capillary shunts
occurs when blood flows from the right side of the heart to the left side w/o coming in contact with an alveolus for gas exchange
Anatomic shunts
normal anatomic shunt is
3%
AA gradient normal range is
7 to 15 mm hg
Common abnormal causes of anatomic shunt include ( 3diseases)
CHF
Intrapulmonary fistula
vascular lung tumors
Capillary shunts are caused by (3 diseases aaa)
- alveolar collapse or atelectasis
- alveolar fluid accumulation
- alveolar consolidation or PNA
The sum of the anatomic and capillary shunt makes up the
absolute shunt
What is the purpose of PEEP, and is a treatment for what kind of hypoxemia
To keep alveoli open and a treatment for refractory hypoxemia
pushing fluid and consolidation out and keeps alveoli open
Relative shunts ( shunt like effect) common causes are (3)
- airway obstruction
- alveolar- capillary diffusion defect
- combination of both
When pulmonary capillary perfusion in excess of alveolar ventilation, what shunt is said to be present
relative shunt
Capillary blood flow does not have enough time to equilibrate w/ the alveolar oxygen tension
Alveolar capillary diffusion defect
How long does it take for Alveolar capillary diffusion defect process
0.75 seconds
Common causes of Alveolar capillary diffusion defect include 2 interstitials
- interstitial pulmonary edema
- interstitial lung disorders
Mixing of shunting non oxygenated blood w/ reoxygenated blood distal to the alveoli
venous admixture
Higher pao2 downstream
Lower pao2 than the reoxygenated blood
Is classified as
venous admixture
Under normal conditions the overall alveolar ventilation is about ____ and the pulmonary capillary blood flow is about _____
4 L/min and 5 L/min (4:5 or 0.8)
In some disorders the lungs receive less ______ ______ in relation to ventilation
blood flow
What disorders will the lungs receive less ventilation in relation to blood flow? (4)
- Asthma
- emphysema
- pulmonary edema
- PNA
The pt’s alveolar dead space is often expressed as
dead space/ tidal volume ( Vd/ Vt) ratio
How would you interpret this ABG
pH: 7.51
PaCO2: 52
HCO3: 40
PaO2: 49
Acute Alveolar Hyperventilation superimposed on Chronic Ventilatory Failure
pH: increased
PaCO2: increased (but lower than pts typical elevated baseline level)
HCO3-: increased (significantly) (but lower than pt’s typical elvated baseline level)
PaO2: decreased ( but lower than the pts typical baseline level)
How would you interpret this ABG
pH: 7.28
PaCO2: 97
HCO3-: 44
PaO2: 39
Acute Ventilatory Failure Superimposed on Chronic Ventilatory Failure
pH: decreased
PaCO2: increased (but higher than pt’s typical elevated baseline level)
HCO3- increased increased (significantly) but higher than pt’s typical elevated baseline level
PaO2: decreased (but lower than the pt’s typical low baseline level
pathophysiology cause of hypoxemia respiratory failure are (3)
- alveolar hypoventilation
- pulmonary shunting
- v/q mismatch
causes of alveolar hypoventilation (diseases)
CNS depressants, head trauma, COPD, obesity, sleep apnea, neuromuscular disorders
causes of anatomic shunts are (diseases)
CHF, intrapulmonary fistula, vascular lung tumors
Under normal conditions alveolar ventilation is about…
and pulmonary capillary blood flow is…. making the overall ratio of alveolar ventilation to blood flow…..
4 L/min ; 5 L/ min; 4:5 or 0.8
In asthma, emphysema , pulmonary edema, PNA the lungs receive
less ventilation in relation to blood flow
AA gradient is used to identify the cause of hypoxemic respiratory failure——- (3)
alveolar hypoventilation, pulmonary shunting, v/q mismatch
AA gradient should not exceed
30 mmHg
Oxygen can increase the
AA gradient
When pulmonary shunting, v/q mismatch or diffusion blockade is primary cause of hypoxemia respiratory failure the AA gradient is
elevated
major pathophysiologic mechanisms that result in hypercapnic respiratory failure (same as hypoxemia but more severe)
- Alveolar hypoventilation
- increased dead space
- severe v/q mismatch
Hypercapnic respiratory failure is vent failure and is classified as 2 groups
- acute ventilatory failure
- chronic ventilatory failure
Short term disease process are called
and examples of that are
acute ventilatory failure; flu, acute bronchitis
Long term disease process is called…..
and examples of that are
chronic ventilatory failure; COPD, obesity
4 standards for MV
- Apnea
- Acute vent failure
- Impending vent failure
- severe refractory hypoxemia
apnea cause pao2 to rapidly ______, and paco2 to ______
decrease, increase
Acute vent failure is sudden increase of PaCO2 to greater than ____ w/ a low ___ , <7.3
50 mm Hg ; pH
Increase WOB w/ borderline acceptable ABG
impending vent failure
Does not respond to o2 therapy PaCO2 <40 mm Hg, SaO2 <75%
severe refractory hypoxemia
What can help with severe refractory hypoxemia
PEEP, CPAP, Lung expansion
Severe PNA, interstitial lung disease and ARDS are often seen in
Severe refractory hypoxemia
Hypoxemia respiratory failure is treated with
o2 therapy
Hypercapnic respiratory failure is treated with _________ _________ to manage PaCO2 and____
ventilatory support; pH
Both oxygen and ventilatory support are used when a pt demonstrates both and is called
Type III respiratory failure
Primary indication for hypercapnic respiratory failure is
secondary to COPD exacerbation
NIV is benficial for pts who ARE able to protect their airways
Asthma
mild to moderate atelectasis
community acquired PNA
NIV is very safe and effective means of support but may be poorly tolerated, contraindication, or harmful in pts with
respiratory arrest
cardiac arrest
upper airway obstruction
poor ability to clear secretions
profound refractory hypoxemia
Less than 1% are
unweanable
5% require
days to weeks to weaned
require a systematic approach to being weaned
15- 20%
over expansion of the alveolar structure
Barotrauma
Caused by high ventilator pressures and volumes, alveolar rapture does not occur
Volutrauma
CPAP, SBT, SIMV, VSV, ASV are some modes to
wean pts