Pulmonary Flashcards
Goals of cardiovascular pulmonary PT
- Prevent airway obstruction/ accumulation of secretions that interfere with normal respiration
- Improve airway clearance, cough effectiveness, ventilation through mobilization and drainage of secretions
- Improve endurance, general exercise tolerance
- Reduce energy costs during respiration through breathing retraining
- Prevent, correct postural deformities associated with pulmonary or extrapulmonary disorders
- Maintain or improve chest mobility
Anatomy of the respiratory tract
- trachea
- 2 mainstem bronchi
- 5 lobar bronchi (3 upper, middle, lower) on right; (2 upper and lower and a lingula on the left
- 18 segmental bronchi
- bronchioles
- alveolar ducts and sacs
Primary ventilatory muscles
Inspiration: •Diaphragm •Scalenes •Parasternals Expiration: •none active during tidal (resting) expiration-passive recoil
Accessory ventilatory muscles
Inspiration: • SCMs • upper traps •pecs •possible external intercostals Expiration: • abdonminals • pec major •possibly internal intercostals
Compliance
distensibility of tissue- how easily the lungs inflate during respiration
Airway resistance
amount of resistance to flow of air- depends on: bifurction/ branching of airways, size of lumen- diameter may be decreased by mucus or edema.
Flow rates
- measurements of amount of air moved in and out of airway over a period of time.ie. With COPD flow rate is decreased- takes longer than normal to exhale a specific volume of air
Total lung capacity
the total amount of air contained in the lunges after a maximal inspiration
•approx 6,000 mL
Tidal volume
the amount of air exchanged during a relaxed inspiration followed by a relaxed expiration (quiet/resting breathing)
•approx 500 mL
Residual volume
the amount of air left in the lungs after a max expiration
• approx 1500 mL
•RV increases with restrictive and obstructive pulmonary disease
Vital capacity
measured by max inspiration followed by max expiration
•approx 4500 mL
•decreases with age, restrictive and obstructive diseases, and is less in supine than erect sitting or standing
normal respiration rates for adults
12-20 breaths per minute
normal ratio of inspiration/expiration
at rest= 1:2
with activity= 1:1
*patient with COPD may have a ratio of 1:4 at rest- reflects this patient types difficulty with expiratory phase of breathing
ausculation- normal and adventitious
Normal: vesicular, bronchiol, bronchovesivular
Adventitious: crackles (rales), wheezes (rhonchi)
thin, frothy, and white consistency of cough production indicates…
pulmonary edema and heart failure
Restrictive lung diseases
Difficulty with INHALATION
Pulmonary causes:
•pneumonia
•TB
•asbestosis (a lung disease resulting from the inhalation of asbestos particles, marked by severe fibrosis and a high risk of mesothelioma- cancer of the pleura)
•atelectasis
•tumor
•pulmonary fibrosis
•pulmonary edema
•PE
•ARDS (adult or acute respiratory distress syndrome caused by fluid build up in the alveoli)
•bronchopulmonary dysplasia (Chronic lung disease of premature babies)
• advanced age
•pneumothorax (A collapsed lung. A pneumothorax occurs when air leaks into the space between the two pleural membranes surrounding each lung, space is called the pleural cavity)
•hemothorax (an accumulation of blood within the pleural cavity- space between the pleural membranes surrounding each lung)
Extrapulmonary causes:
• chest wall pain due to trauma or surgery
•chest wall stiffness due to disease- scleroderma (autoimmune disease- hardening of the skin), ankylosing spondylitis
•postural deformity- scoliosis, kyphosis
• Ventilatory muscle weakness- SCI, CP, MD, Parkinson disease
•pleural disease
• decreased diaphragmatic excursion due to ascites (fluid build up in the abdominal cavity) or obesity
Pulmonary HTN
can be caused by a number of factors, all of which force the heart’s right side to work harder to pump blood to the lungs. The right chambers may enlarge as they struggle to function, and the blood is often forced backwards through the tricuspid valve
lobectomy
removal of a lobe of a lung- often for removal of CA
COPD chronic obstructive pulmonary disease
- peripheral airway disease
- chronic bronchitis (inflammation (swelling) and irritation of the bronchial tubes. The irritation of the tubes causes mucus to build up)
- Emphysema (In people with emphysema, the air sacs in the lungs (alveoli) are damaged. Over time, the inner walls of the air sacs weaken and rupture — creating larger often mucus filled air spaces called bullae- instead of many small ones)
- asthma (marked by spasms in the bronchi of the lungs, causing difficulty in breathing. It usually results from an allergic reaction or other forms of hypersensitivity- airways narrow and swell and may produce extra mucus)
- bronchiectasis (a condition where the bronchial tubes of your lungs are permanently damaged, widened, and thickened. These damaged air passages allow bacteria and mucus to build up and pool in your lungs- leading to frequent infection and general obstruction)
- cystic fibrosis (hereditary disease that affects the lungs and digestive system. The body produces thick and sticky mucus that can clog the lungs and obstruct the pancreas)
- bronchopulmonary dysplasia (Chronic lung disease of premature babies- lungs don’t develop normally)
Types of breathing:
- diaphragmatic
- segmental: lateral costal expansion and posterior basal expansion
- pursed lip breathing- avoid forceful expiration- there should be no contraction of abdominals
- Glossapharyngeal breathing: for high SCI or other neuromuscular disorders- usually ventilator dependent because of absent or incompetent innervation to diaphragm (gulping air)
Pulmonary A&P Dr.B
•Involuntarily controlled by brainstem. Voluntarily by cerebral cortex.
•Primary inspiratory muscles: Diaphragm External intercostals Internal intercostals •Accessory: trap, SCM, scalenes, pectorals, serratus ant, lat dorsi
•Primary expiratory: Rectus abdominus External oblique Internal oblique. •Accessory exp: Latissimus dorsi Tripod position allows for accessory muscles to be used more effectively
Respiratory flow chart
nose -> nasal cavities -> pharynx (adenoids & tonsils) -> larynx (epiglottis) -> trachea -> bronchi -> bronchioles -> alveoli -> lung capillaries
Gas exchange
Occurs across the alveolar-capillary membrane. Factors involved: Concentration gradient: Alveolar O2 100mmHg to capillary 40mmHg Surface area of the A-C interface. Thickness of membrane (phlegm) Solubility of the gas
Ventilation/Perfusion
- Close as possible to 1:1 is ideal
- Air present and ready to exchange (V) and blood present and ready for exchange (Q)
- Really is 0.8
- V/Q depends on position
- Dead space: perfusion is lacking
- Shunt: ventilation is lacking
Obstructive disorders
- Asthma
- Chronic bronchitis
- Emphysema
- Cystic Fibrosis
- Bronchiectasis
- COPD: a combination of chronic bronchitis, emphysema, small airway obstruction.
COPD
- Progressive airflow limitation caused by airway inflammation due to noxious particles/gases
- Mucous membranes hyperplastic (narrow)
- Cilia function decreases (hard to clear)
- Chest wall flexibility decreases, no recoil
- Elevated TLC, FRC, RV
- Decreased IRV, VC, IC, ERV
COPD what can you do
What can you do?
•Teach patient positioning: upright or postural drainage
•Pursed lip breathing (tissue trick)
•Effective coughing with tactile cues
•Give rest breaks
•Use Borg scale
** don’t increase oxygen without permission**
Asthma: exacerbation
•S&S: Tachypnea, fatigue, anxiety, pursed lip breathing, active expiration, cyanosis, accessory muscle use
•if severe: both BP and pulse will decrease on inspiration
polyphonic wheezing on expiration>inspiration
diminished breath sounds
Asthma: tx
Remove of trigger Bronchodilator Corticosteriods Supplemental oxygen IV fluids PT: pt should bring inhaler to tx, stop exertion if wheezing noted, triggers should be noted on the chart (cold/allergen)
Chronic Bronchitis
- S&S: tripod breathing, barrel chest, anxiety, fatigue, ^RR, prolonged expiration, stocky build, dependent edema, “blue bloater”, cyanosis due to cor pulmonale, edema, ^HR, BP, ^Hbg, ^CO2
- Rhonchi, diminished breath sounds, crackles, productive cough in morning, clear to purulent sputum
- Xray: flat diaphragms, cardiomegaly (cor pulmonale)
Chronic bronchitis tx
Smoking cessation, bronchodilator, steroids, expectorant, O2, ventilation if severe
PT: airway clearance techniques, pulmonary rehab
Emphysema
•S&S: cachexia, accessory muscle use, fatigue, anxiety, “Pink puffer-tachypnea, pursed lips & flushed skin”, muscle atrophy, air trapping
Very diminished breath sounds, wheeze, crackles
• No cough
•Xray: bullae, heart appears smaller, flat diaphragms
Emphysema tx
- Bronchodilators,
- O2
- Nutrition support
- Pulmonary rehab.
- Be on the look out for spontaneous pneumothorax as bullae can burst
Cystic fibrosis
•S&S: tachypnea, fatigue, accessory muscle use, barrel chest, cachexia, clubbing
^BP, HR, diminished breath sounds, rhonchi, crackles, chronic cough, thick green/red streaked sputum
•Xray: flat diaphragms, fibrosis, atelectasis, linear opacities, large R ventricle
Cystic fibrosis tx
- Antibiotics, Bronchodilators, Mucolytics
- O2
- PT: Airway clearance techniques & aerobic exercise
- nutritional support
- Psychosocial
- lung transplant
Airway clearance techniques
- Breathing control
- Thoracic expansion
- Forced expiratory
- Directed cough and huffing
- Postural drainage
Breathing techniques
- Diaphragmatic breathing
- Inspiratory muscle training
- Paced breathing and exhale effort
- Pursed-lip breathing
- Segmental breathing
- Sustained maximal inhalation with incentive spirometer
Bronchiectasis (bronchial dilation)
- S&S: tachypnea, fatigue, accessory muscle use, barrel chest, cachexia, clubbing, ^BP & HR, pleuritic pain
- Crackles, diminished breath sounds, rhonchi
- Sputum: purulent, odorous, may have hemoptysis
- Xray: infiltrates, atelectasis, honeycomb
Bronchiectasis tx
- Antibiotics, bronchodilators, corticosteroids, O2, IV fluid, nutritition, pain control, lung transplant
- PT: bronchopulmonary hygiene