Pulmonary Flashcards
Wheezing
high pitched whistle
Usually louder in Expiration
Obstructive dz: asthma, COPD, lung CA, sleep apnea, CHF, GERD, Fb
Ronchi
continuous, low pitched rumble
may clear with Cough or suction
d/t increased secretions or obstruction in bronchial airway
Crackles/Rales
discontinuous
high pitched
during Inspiration
not changed by cough
d/t popping open of collapsed alveoli
Crackles/Rales are seen with
PNA Atelectasis Bronchitis Pulm edema Pulm fibrosis
Stridor
loudest over anterior neck d/t narrowing of larynx of anywhere over trachea
COPD includes:
Emphysema
Chronic Bronchitis
COPD is
largely irreversible airflow obstruction
Chronic bronchitis: episodic
Emphysema: steady decline
Risk factors for COPD
Cig smoking
A1 antitrypsin def
Occupation exposure
Recent airway infection
Emphysema
loss of elastic recoil
Permanent enlargement of terminal airspace- distal to the bronchioles
Pathophys of Emphysema
decreased protective enzymes and increased damaging enzymes –>
Alveolar capillary and Wall damage
–>
Expiration is now active process
Increased airway trapping
Hallmark of Emphysema
simply Dyspnea: hard to breath and chronic cough (wet or dry)
PE of Emphysema
“Pink puffers”
Dec breath sounds
BARREL CHEST
Hyperresonance on percussion
Severe dz: pursed lip expiration
Gold standard to dx both Emphysema and Chronic Bronchitis
PFT: pulmonary function test
PFT results of COPD
Decreased FEV1
Ratio of FEV1/FVC <70%
What will you see on CXR in both types of COPD?
Increased AP diameter
CXR of Emphysema specifically
Flattened diaphragms
Bullae
Chronic Bronchitis (a sub category of COPD)
WET cough for at least 3 months per year, 2 years in a row
Pathophys of Chronic Bronchitis
Mucous gland hyperplasia
increased risk of infection!!! (S.PNA and H.Flu)
Cardinal sx of Chronic Bronchitis
Dyspnea and WET cough
PE of Chronic Bronchitis
Crackles/Rales
Wheezing
Cor pulmonale
Enlarged, tender LIVER (RUQ)
JVD
Periph edema
Cyanosis and Obesity
“Blue bloaters”
Chronic Bronchitis
EKG of Chronic Bronchitis (a subcategory of COPD) may show
Cor pulmonale- RVH, right atrial enlargement, RAD
CBC of Chronic bronchitis pt may show
Increased Hgb and Hematocrit- chronic hypoxia causes this
ABG of Chronic bronchitis pt may show
Respiratory acidosis
Cor pulmonale
alteration of RIGHT ventricle as a result of a Respiratory problem
Peripheral edema and Cyanosis go with what category of COPD
Chronic Bronchitis
the resp affects are starting to affect the Right side of heart
Which type of COPD has a severe V/Q mismatch?
Chronic Bronchitis
Hypercapnia (too much CO2) is assoc w what type of COPD
Chronic Bronchitis
CXR shows flattened diaphragms, DEC vascular markings, and BULLAE (dark circles signify airspace loss)
Emphysema
CXR shows INCreased vascular markings, Right heart enlargement
Chronic Bronchitis
4 types of Obstructive airway dz
Asthma
Emphysema, Chronic Bronchitis (COPD)
Cystic Fibrosis
Bronchiectasis
Order of airway breakdown
Trachea (windpipe)
Bronchi
Bronchioles
Alveoli
What is Bronchiectasis?
Irreversible DILATION of bronchial airways and impairment of mucociliary escalator
If someone has Bronchiectasis, what’s the big deal?
It leads to
- Repeat infections
- Airway obstruction
- Peribronchial fibrosis
Sx of Bronchiectasis
Persistent wet cough
SOB
Pleuritic CP
Hemoptysis (BLOOD, d/t bronchial artery erosion)
PE of Bronchiectasis is non specific
Crackles usually
Wheezing
Rhonchi
Preferred imaging of choice to diagnose Bronchiectasis (but not the gold standard)
High resolution CT
thick bronchial walls, airway dilation, tram-track appearance, signet ring sign
Gold standard to dx Bronchiectasis
PFT: pulmonary fx test showing Obstructive pattern
Tx for Bronchiectasis
Conservative: chest physiotherapy, mucolytics, bronchodilators
Abx often needed: Macrolides, Ceph, Augmentin, FluoroQ
Surgery if severe/refractory
“Tram track” on CXR
Bronchiectasis
Signet ring sign
a pulmonary artery coupled with dilated bronchus
Bronchiectasis
Abx for Acute exac of COPD
Macrolide (Azithromycin, “Z pack)
Ceph
Augmentin
FluoroQ
Category A COPD tx
SABA (Albuterol) or
SAMA (Ipratropium)
Category B COPD tx
LAMA
Lama: Tiotroprium (inhaled powder)
Category C COPD tx
LAMA (Tiotropium) + LABA (Salmeterol) or LAMA (Tiotropium) or LABA (Salmeterol) + Glucocorticoid (Fluticasone)
When to use Oxygen in COPD?
it reduces mortality and improves QOL in severe COPD
if Cor pulmonale (R heart changes)
O2 sat < 88%
PaO2 <55 mmHg
Asthma 3 components
Airway hyperreactive
Bronchoconstriction
Inflammation
IgE response in Asthma
increased IgE binds to mast cells –> inflammatory response –> increased Leukotrienes
Samter’s Triad
Aspirin exacerbated
Asthma + Chronic runny nose + Nasal polyps + sensitive to ASA or NSAIDs
Atopic Triad
Asthma
Allergic rhinitis
Eczema (atopic dermatitis)
Classic triad of Asthma
SOB
Wheezing
Cough
(esp at NIGHT)
maybe chest tightness and fatigue
Clues to severity of Asthma
Previous intubation, hospital admission, ICU visit
PE shows wheezing, hyperresonance, dec breath sounds, tachycardia, tachypnea, use of Acessory muscles
ASTHMA
Dx of Asthma in office
PFT test
Methacoline challenge
Bronchodilator challenge
Dx of Asthma in acute exacerbation
Peak expiratory flow rate
in order to d/c pt, the PEFR must be >70% or improved by 15% from 1st attempt
CXR of asthma
generally not helpful
used to r/o other conditions
normal BUN level
“teenager years”
7-18
normal Cr
0.6-1.2
normal Bicarb level
“the twenties”, when many people come out as Bi
22-29
Normal K (potassium) level
3.5-5
Normal Na (sodium) level
135-145
Asthma:
Sx 1x per week
SABA use 1x per week
Nighttime awaken <2 x per MONTH
No limit to daily actvitiy
Intermittent Asthma
Tx: SABA prn
Asthma:
Sx 3-4 per week
SABA use a fewx per week
Nighttime awaken a fewx per Month
Minor limit to normal activity
Mild Pers Asthma
Tx: Inhaled corticosteroid (and SABA prn)
Asthma
Sx daily SABA use daily Nighttime awakening a fewx per WEEK, but not nightly Some limit to normal activity FEV1 60-80% of predicted
MODERATE pers Asthma
when you see the word “daily”
Tx: Low dose Inhaled corticosteroid + LABA
OR
just Med dose Inhaled corticosteroid
can add LTRA (Montelukast)
Asthma
Sx throughout day SABA use throughout day Awaken nightly Activity very limited FEV1 <60% of predicted
Severe pers Asthma
Tx: High dose ICS + LABA
can add Omalizumab if severe and uncontrolled
Tx for Asthma exacerbation
SABA- Albuterol
Steroid- Prednisone
Anticholinergic/SAMA- Ipratropium
SABA and
LABA
Albuterol
Salmeterol, Formeterol
SAMA and
LAMA
Ipratropium
Tiotropium
LTRA
Montelukast
Mast cell stab
Cromolyn
Preferred tx, Step up therapy in Asthma
1: SABA prn
2: Low dose ICS
3: Low dose ICS + LABA
4: Med dose ICS + LABA
5: High dose ICS + LABA
6: High dose ICS + LABA + steroid
Note, anytime you see LABA (Salmeterol, Formeterol) you can substitute with
LTRA (Montelukast) as an alternate
When can you consider stepping down therapy?
If sx have been controlled for >3 months
Corticosteroids (for acute Asthma exacerbation)
Prednisone
Methylprednisolone
Prednisolone
Inhaled Corticosteroids (for maintenance therapy of Asthma)
Triamcinolone
Beclomethasone
LABAs are added in Asthma tx starting in step 3, what is a LABA?
Long acting beta agonist
Formoterol
Salmeterol
Pt has daily SABA use, daily sx
and a few PM wakenings per week
What is the treatment?
This person has MODERATE persistent asthma
Tx: Low dose ICS + LABA
This person has sx and uses SABA throughout the day, awakens nightly, and <60% FEV1
What is the treatment?
This person has SEVERE persistent asthma
Tx: Med/High dose ICS + LABA
can add Omalizumab
This person has sx and SABA use 1-2x per week
1-2 nighttime wakening per MONTH
What is the tx?
This person has only INTERMITTENT asthma
Tx: SABA prn
This person has 3-4 sx and SABA use per week
3-4 nighttime wakenings per MONTH
What is the tx?
This person has MILD persistent asthma
Tx: Low ICS
When do you start adding the LABA (Formoterol, Salmeterol) to the ICS?
in step 3, MODERATE persistent
when stuff is “DAILY”
Acute Bronchitis
Usually VIRAL-
Adenovirus, Infleunza, Corona, Coxsackie
Acute Bronchitis if bacterial (rare), what are the causative organisms?
S. PNA
M. cat
H. flu
the “SMH” pathogens
Clinical sx of Acute Bronchitis
Cough for at least 5 days, often 1-3 weeks!
productive
Malaise, SOB, wheezing, low grade fever, malaise
MAYBE HEMOPTYSIS
2 most common causes of Hemoptysis (bloody cough)
Acute Bronchitis
Bronchogenic carcinoma
PE and CXR of Acute Bronchitis
PE often normal, with maybe wheezing/ronchi
CXR not needed! Imaging not needed usually
If CXR obtained, will be normal or nonspecific
Tx for Acute Bronchitis
Supportive (fluids, antitussive, antipyretic, analgesics)
Abx not usually needed
Pertussis
“whooping cough”
Bacteria: Bordetella pertussis
Transmission: resp droplets during coughing fits
Catarrhal: URI sx 1-2 weeks. most contagious!!
Paroxysmal: Severe cough fit, posttussive emesis, 2-4 wks
Convalescent: resolution, cough may last up to 6 wks
Tx of Pertussis
“whooping cough”
Supportive
Abx to decreases contagiousness: Macrolide (Azithromycin “Z pack”)
2nd line Abx tx for Pertussis “whooping cough”
Azithromycin “Z pack” is 1st line
Bactrim is 2nd line
Complications of Pertussis “whooping cough”
PNA, Encephalopathy, Ear infection, Seizure
in infants, deaths often d/t Apnea/ cerebral HYPOXIA d/t coughing fits
Pertussis Vaccine (5 doses!!! + booster later)
DTaP
2,4,6, 15 mo and 4-6 YO
then booster 11-18 YO
Bronchiolitis
infection AND inflammation of bronchioles
RSV most common!!!
2 mo-2 yo
Acute Bronchiolitis- RSV
Viral prodrome- fever and URI for 1-2 days
THEN
Respiratory distress- wheezing, tachypnea, nasal flaring, cyanosis, retractions, rales
Tx for RSV Bronchiolitis
Mostly supportive: oxygen, antipyretic- Acetaminophen, fluids
Meds limited role: beta agonist, epi
If RSV Bronchiolitis pt has severe Lung or Heart dz or is Immunocompromised, what should you consider giving them?
Ribavirin
Prevention of RSV Bronchiolitis in high risk patients
Premature <29 wks Chronic lung dz Cong Heart dz Neuromusc difficulties Immunodef
Palivizumab
and
WASH HANDS
Triple D’s: drooling, dysphagia, distress
Stridor
Thumb sign on CXR
Tx is to maintain airway, maybe intubate, and Ceftriaxone (Rocephin)
Acute Epiglottitis!!!
How can we prevent Acute Epglottitis
Hib vaccine
Rifampin given to close contacts
Barking seal cough
“Steeple sign”
inflammation of Larynx and subglottic airway
Tx is based on severity
1. supportive, o2, air mist, fluids, and dexamethasone
GO HOME
- dexamethasone and nebulized Epi
STAY FOR 3-4 HOURS - dexamethasone + nebulized Epi + ADMIT
Croup!
Laryngotrachetiits