Pulmonary Medicine Flashcards
Review of common Pulmonary disease and disorders
What is Asthma?
Enhanced resposiveness to stimuli in the trachea and bronchi
What is the pathophysiology of Asthma?
- Widespread narrowing of the airways
- Hypertrophy of smooth muscle
- Mucosal Edema
- Hyperemia
- Thickening of the epithelial basement membrane
- Hypertrophy of mucus glands
- Acute Inflammation
- Plugging of airways by thick, viscid mucus
Etiology of Asthma
- Dust Mites
- Pets
- Cockroaches
- Indoor Molds
- Exercise
- Cigarette Smoke
Name 5 S/S of Asthma
- Respiratory Distress at Rest
- Difficulty speaking in sentences
- Diaphoresis
- Use of Accessory Muscles
- Respiratpory rate of >28
- Pulse >110
- Pulsus Paradoxus >12 mmHg
- Hyperesonance
- Cough
- Chest Tightness
What are the ominous signs of Asthma?
- Fatigue
- Absent breath sounds
- Paradoxical chest/abdominal movement
- Inability to maintain recumbency
- Cyanosis
Laboratory/Diagnositics for Asthma
CBC
PFT
ABG
Leukocytosis, Respiratory Alkalosis, PF is <60 lpm
Agents for Asthma and COPD
- Short-Acting Beta Agonist (SABA)
- Long-Acting Beta Agonist (LABA)
- Short-Acting Muscarinic Agonists (SAMA)
- Long-Acting Muscurinic Agonists (LAMA)
- LABA/ICS
- LABA/LAMA/ICS
Mechanism of Action of SABAs
Binds to BETA2 adrenergic receptors in the airway. This leads to activation of adenyl cyclase resulting in increased levels of cyclic-3’,5’-adenosine monophosphate (cAMP). Increases in cAMP inhibits phosphorylation of myosin and decrease intracellar calcium. Decreased intracellar calcium relaxes smooth muscle airways.
Indication of SABAs
- Bronchospasm
- Asthma
- COPD
Therapuetic effect of SABAs
Bronchodilation
Side Effects of SABAs
Chest Pain
Palpitations
Nervousness
Restlesness
Tremor
Contraindications of SABAs
Cardiac Disease
Hypertension
Diabeties
Seizure
Excess inhaler use
SABA Agents
- albuterol (ProAir)
- levabuterol (Xopenex)
Mechanism of Action for LABAs
Produces accumulation of cyclic adenosine monophosphate at BETA2 adrenergic receptors
Indication for LABAs
- Concomitant therapy for asthma uncontrolled with ICS
- Prevention of bronchospasm in COPD
- Prevention of exercise-induced bronchospasm
Therapuetic Effect of LABAs
Bronchodilation
Side Effects of LABAs
Headache
Palpitations
Tachycardia
Trembling
Paradoxical Bronchospasm
Contraindications of LABAs
- Acute attack of Asthma
- Not taking a long-term asthma control medication
- Patient is currently controlled on a low- or medium-dose ICS
LABA Agents
salmeterol (Servent Diskus)
formoterol (Perforomist)
olodaterol (Striverdi Respiramat)
Mechanism of Action for SAMAs
Inhibits cholinergic receptors in bronchial smooth muscle. This results in decreased concentrations of cyclic guanosine monophophate (cGMP). Decreased levels of cGMP results in bronchodilation.
Indication of SAMAs
Maintenence therapy of reversible airway obstruction due to COPD, bronchitis, emphysema
Management of asthma induced bronchospasm
Therapuetic effect of SAMAs
Bronchodilation
Decreased Rhinorrhea
Side Effects of SAMAs
Hypotension
Palpitation
Dizziness
Headache
Bronchospasm
Contraindations of SAMAs
Acute Bronchospasm
Hypersensitiity to atropine, belladonna alkaloids, bromide
SAMA Agents
ipratropium solution (Atrovent)
Mechanism of Action of LAMAs
Acts as a anticholinergic by selectively and reversibly inhibiting M3 receptors in smooth muscle of airways
Indication of LAMAs
Long-Term maintenance of COPD and Asthma
Reduce exacerbations in COPD
Therapuetic Effects of LAMAs
Decrease incidence and severity of bronchospasm in COPD and Asthma
Side Effects of LAMAs
Dry Mouith
Tachycardia
Bronchospasm
Glaucoma
Urinary difficulty
Contraindications of LAMAs
Concurrent ipratropium
LAMA Agents
tiotropium bromide (Spiriva), glycopyrrolate (Lonhala), aclidinum (Tudorza)
Mechanism of Action of ICS
Potent, locally acting anti-inflammatory and immune modifier
Indication of ICS
Maintainence and Prophylatic treatment in Asthma
Therapuetic Effect of ICS
Improves asthma symptoms
Decreases frequency/severity of asthma attacks
Side Effects of ICS
Otis Media
Headache
Bronchospasm
Adrenal Suppresion
Contraindications of ICS
Acute attack of asthma or status asthmaticus
ICS Agents
Budesonide (Symbicort)
Fluticasone (Advair)
LABA/ICS
Symbicort & Advair
LABA/LAMA/ICS
fluticasone furoate/unmeclidinium/vilanterol
(Trelegy Ellipta)
mMRC Grade 0
Dyspnea with mild exercise
mMRC Grade 1
Dyspnea when hurrying or walking up a slight hill
mMRC Grade 2
Walks slower than people of the same age because of dyspnea or has to stop for breath when walking at own pace
mMRC Grade 3
Stops for breath after walking 100 yards (91 m) or after a few minutes
mMRC Grade 4
Too dyspneic to leave house or breathless when dressing
GINA: Track 1, Step 1
Symptoms less than 4-5 days a week
Low dose ICS-formoterol
GINA: Track 1, Step 2
Symptoms less than 4-5 days a week
Low dose ICS-formoterol
GINA: Track 1, Step 3
Symptoms most days or waking > 1 week
Low-Dose maintenence ICS-formoterol
GINA: Track 1, Step 4
Daily symptoms, Waking greater than once a week, or low lung function
Medium-Dose maintenence ICS-formoterol
GINA: Track 1, Step 5
Persistent symptoms/exacerbation despite good adherence w/ Step 4
Add LAMA, Consider Phenotypic assesmmet, Consider high-dose maintenence ICS-formoterol
GINA: Track 1, Reliever
PRN low-dose ICS-formoterol
GINA: Track 2, Step 1
Symptoms less than 2 timess a month
ICS taken whenever SABA used
GINA: Track 2, Step 2
Symptoms greater than 2 times per month but less than 4-5 days/week
Low-dose maintenence ICS formoterol
GINA: Track 2, Step 3
Symptoms most days or waking greater than one week
Low-Dose maintenence ICS-LABA
GINA: Track 2, Step 4
Daily symptoms, Waking greater than one week, Low lung function
Medium-High dose Maintence ICS-LABA
GINA: Track 2, Step 5
Persistent symptoms/exacerbation despite good adherence w/ Step 4
Add LAMA, Consider Phenotypic assesmmet, Consider high-dose maintenence ICS-formoterol
Inpatient Management of Asthma
- Supplemental low-flow 02
- Inhaled SABA: Albuterol (MDI or Nebulizer
- Inhaled SAMA: Ipratropium (MDI or Nebulizer)
- Systemic Glucocoticoids: Methylprednisone (IV or PO)
- Magnesium Sulfate
- Suspected anaphylais? Epinephrine (0.3-0.5 mg SQ)
- Mechanical Ventilation as needed
What is Status Asthmaticus?
Severe acute asthma presenting in an unremitting, poorly responsive, life-threatening manner
Inpatient Management of Status Asthmaticus
- Supplemental Oxygen
- IV D5 1/2 NS
- Inhaled and Parenteral sympathomimetics
- Methylprednisolone 60-125mg or Hydrocortisone 300 mg
- Atrovent
- Monitor REspiratory function
- Monitor ABG every 10-20 minutes
- Intubate
What is COPD?
Chronic Bronchitis and Emphysema
What is Chronic Bronchitis?
Excessive secretion of bronchial muscus manifested by productive cough for three months
Name 4 S/S of Bronchitis
- Mild to Moderate Dyspnea
- Onset after age 35
- Copius sputum production
- Stocky, Obese
- Chest A-P Diameter Normal
- Percussion Normal
- Hyperinflation of Chest on CXR
- Hematocrit Increased
What is Emphhysema?
Abnormal, permanent enlargement of the Alveoli
Name 4 S/S of Emphysema
- Progressive, constant dyspnea
- Onset of symptoms after age 50
- Mild sputum
- Thin, Wasted Body
- Chest AP Diameter increased
- Percussion hyperresonant
- Hematocrit normal
- Total lung capacity increased
How to confirm COPD
PFT stating FEV1/FVC ratio is less that 0.7
GOLD One
FEV1 >80% of predicted value
GOLD Two
FEV1 50-79% of predicted value
GOLD Three
FEV1 30-49% of predicted value
GOLD Four
FEV1 less than 30% of predicted value
Treatment of COPD: Category A
No or 1 moderate exacerbation that does not require hospitalization per year
mMRC between 0-1
CAT less than 10
Bronchodilator
Treatment of COPD: Category B
No or 1 moderate exacerbation that does not require hospitalization per year
mMRC greater than 2
CAT greater than 10
LABA+LAMA
Treatement of COPD: Category E
Greater than 2 moderate exacerbations or greater than 1 leading to hospitalization per year
LABA+LAMA
COPD Assessment Test
Scale symptom severity with 1 being the lowest and 5 being highest
- Cough
- Phlegm
- Chest Tightness
- Breathlessness
- Activities
- Confidence
- Sleep
- Energy
What is TB?
Systemic disease caused by M. tuberculosis
Name 4 groups at risk for TB
- Incarcerated
- HIV (+)
- Diabeties Mellitus
- Chronic Kidney Disease
- Malignanacy
- Malnutrition
- Immunosupressed
Name 3 S/S of TB
- Fatigue
- Anorexia
- Dry cough
- Weight loss
- Fever
- Night Sweats
Laboratory/Diagnostics for TB
- Cuture of M. tuberculosis x3
- Small Homogenous infiltrate in upper lobes by CXR
- Acid-Fast Smears
- Purified Protien Derivative (PPD)
Management for TB
- Notifiy local health department
- Hospitalization not required
Antituberculars
Rifampin 600mg
Isoniazid 300mg
Pyrazinamide 1.5-2.0g
Ethambutol 15mg/kg
Typical treatment is for 6m. 9m for immunocompromised
MOA of Rifampin
Inhibits RNA synthesis by blocking RNA transcription in susceptible organisms
Indication for Rifampin
Active TB
Broad Spectrum ABX
Therapuetic Effect of Rifampin
Bactericidal action agaisnt:
Mycobacterium
S. Aureus
H. Influenzae
L. Pneumophila
N. Meningitidis
Side Effects of Rifampin
- DRESS
- SJS
- TEN
- Hepatotoxicity
- Red Discolaration of Urine
- NVD
Contraindications of Rifampin
Concurrent use of:
atazanavir, darunavir, fosamprenavir, praziquantel, saquinavir, tipranavir, or ritonavir-boosted saquinavir.
Drug Interactions for Rifampin
Decreases effect of ticagrelor, digoxin, warfarin, contraceptives, and numerous other drugs
Increases effect of clopidogrel, bactrim
Mechanism of Action for Isoniazid
Inhibits mycobaterial cell wall synthesis
Indication for Isoniazid
- TB
- TB prevention
Therapuetic Effect of Isoniazid
Bacteriostatic or Bacteriocidal action against mycobacteria
Side Effects of Isoniazid
- Hepatitis
- DRESS
- TEN
- Pancreatitis
- Peripheral Neuropathy
Contrindications of Isoniazid
Acute liver disease
History of Hepatitis
Pregnancy
Mechanism of Action for Pyrazinamide
Lowers the pH of the mycobateria envirment by converting pyrazinoic acid in susceptable strains
Indication of Pyrazinamide
TB
Therapuetic Effect of Pyrazinamide
Bacteriostatic action against mycobateria
Side effects of Pyrazinamide
Hepatotoxicity
Hyperuricemia
Arthralgia
Photosensitivity
NVD
Contraindications of Pyrazinamide
Liver Impairment
Preganancy
Mechanism of Action of Ethambutol
Inibitis growth of mycobacteria
Indication for Ethambutol
Additive antitubercular agent with active TB
Side Effect of Ethambutol
Hepatitis
Optic Neuritis
Peripheral Neuritis
Confusion
Pulmonary infiltrates
Therapuetic Effect of Ethambutol
Tuberculostatic effect agaisnt susceptable organisms
Contraindications of Ethambutol
Optic Neuritis
TB Monitoring
First 6 weeks- Weekly sputum smears and cultures, then monthly
TB Baseline Labs
LFT
CBC
CMP
Visual Acuity
Red-Green Color Preception
PPD 5mm
Positive in HIV infected and the immunocompromised
PPD 10mm
Positive for healthcare workers, immigrants, and the incarcerated
PPD 15mm
Positive for the general public
What is Pneumomonia
Pathogens gain access to the lower respiratory tract through aspiration, inhalation causing inflammation of the respiratory tract
Name 4 S/S of Pneumonia
- Fever
- Rigor
- Purulent Sputum
- Lung Consolidation
- Malaise
- Increased Fremitus
Abnormal Labs in Pneumonia
- CBC
- ABG
- CXR
- Sputum Cultures
- Blood Cultures
What scales help predict morbidity and mortality in CAP?
- Pneumonia Severity Index (PSI)
- Patient Outcomes Research Team (PORT)
- CURB-65 Criteria
PORT Class I-II
Score: Less than 70
Risk: Low
Mortality: Less than 1%
Treatment: Outpatient
PORT Class III
Score: 71-90
Risk: Low
Mortality: 3%
Treatment: Brief Inpatient
PORT Class IV
Score: 91-130
Risk: Moderate
Mortality: 9%
Treatment: Inpatient
PORT Class V
Score: Greater than 130
Risk: High
Mortality: 30%
Treatment: ICU
CURB-65 Criteria
Confusion
bUn greater than 19
Respiratory Rate greater than 30
SBP<90;DBP<60
**65 **years old or older
CURB-65: Low RIsk
Score: 0-1
Consider home treatment
CURB-65 Moderate Risk
Score: 2
PCU Admission
CURB-65: High Risk
Score: Greater than 3
ICU Admission
Empiric Therapy Outpatient CAP: Nonsevere
Amoxicillin 1g
or
Doxycycline 100mg BID
or
Azithromycin/Clarithromycin
Nonsevere Outpatient CAP Pathogens
C. pneumoniae
M. pneumoniae
S. pneumoniae
H. influenzae
M. catarrhalis
Empiric Therapy Outpatient CAP: Severe
Augmentin
or Cephalosporin + Macrolide/Doxycycline or Fluroquinolone
Viral PNA Treatment
Oseltamivir
Zanamivir
Remdesivir (COVID-19)
Severe Outpatient CAP Pathogens
Multi-Drug Resistant S. Pneumoniae
Empiric Therapy Inpatient CAP: Nonsevere
Beta-Lactam + Macrolide or Fluoroquinolone only
Macrolides
Azithromycin
Clarithromycin
Fluroquinolones
Levofloxacin
Moxifloxacin