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85 Cards in this Set

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Chronic Obstructive Pulmonary Disease
chronic disease of the airways characterized by persistent airflow limitation that is:
1) progressive with no reversibility
Causes of COPD
Interaction of Environmental factors and host facotrs
Environmental Factors that can cause/affect COPD
1) particles inhaled by individual that leads to inflammation
2) Cigarette Smoke - most important modifiable
3) Occupational Dust/Chemicals - pollution
Host Factors that can cause/affect COPD
1) a1-antitrypsin (AAT) deficiency - early onset
2) airway hyperresponsiveness
3) insufficient lung growth
Pathophysiology of COPD
1) Inflammation - exposure to noxious particles
2) Oxidative Stress - oxidants damage proteins/lipids
3) Proteinases - released from inflammatory cells
4) Airways, alveoli, blood vessels affected - chronic inflammation leads to repeat injury and repair which leads to scarring AND increased mucus secretion
Signs/Symptoms of COPD
1) Dyspnea
2) Cough
3) Sputum production
4) Cyanosis of mucus membranes (progression)
5) "Barrel chest"
6) shallow breathing
7) increased respiratory rate
Spirometry for diagnosis of COPD
REQUIRED for diagnosis

FEV1/FVC < 70%
4 aspects of COPD to be considered for assessment
1) Symptoms
2) Spirometry
3) Exacerbation Risk
4) Presence of Co-morbidities
Assess symptoms in COPD diagnosis
use validated questionnaires
1) mMRC
2) CAT
Assess Spirometry in COPD diagnosis
performed after administration of Short acting bronchodilator

FEV1/FVC <70%
GOLD Classification of Airflow Limitation: MILD (I)
FEV1 > 80%
GOLD Classification of Airflow Limitation: MODERATE (II)
50% < FEV1 < 80%
GOLD Classification of Airflow Limitation: SEVERE (III)
30% < FEV1 < 50%
GOLD Classification of Airflow Limitation: VERY SEVERE (IV)
FEV1 < 30%
Assess Exacerbation risk in COPD
2+ exacerbations/year
Common comorbidities with COPD
1) CV disease
2) skeletal muscle dysfunction
3) metabolic syndrome
Desired outcomes of COPD
1) PREVENTION
2) minimize progression
Goals of therapy of COPD
1) relieve symptoms
2) improve exercise tolerance AND overall health status
3) Prevent disease progression
Non-Pharm Therapy in COPD
1) Education
2) Smoking cessation
3) Pulmonary Rehab (groups B-D)
4) Immunizations (annual flu & PPSV)
5) Long-term oxygen Therapy (resting PaO2 < 55 or SaO2 < 88%)
Types of medications used in COPD
1) Bronchodilators
2) Inhaled Corticosteroids
3) PDE-4 Inhibitors
3 Classes of Bronchodilators for COPD
1) Beta Agonists
2) Anticholinergics/Antimuscarinics
3) Methylxanthines
MOA of Beta Agonists
stimulate beta receptor -- increase cAMP -- smooth muscle relaxation -- antagonism of bronchoconstriction
Beta Agonists used in COPD
1) Albuterol - not FDA approved (SABA)
2) Levalbuterol - not FDA approved (SABA)
3) Arformoteral (Brovana) (LABA)
4) Formoterol (Foradil, Perforomist) (LABA)
5) Salmeterol (Serevent) (LABA)
6) Indacaterol (Arcapta, Neohaler) (LABA)
Place in Therapy for Beta Agonists for COPD
SABA - first line for Group A
LABA - Groups B-D
MOA of anticholinergics/antimuscarinics for COPD
inhibition of muscarinic cholinergic receptors -- bronchodilation

decrease mucus gland secretion
Anticholinergics used in COPD
1) Ipratropium (Atrovent) (SHORT)
2) Aclidinium (Tudorza, Pressair)
3) Tiotropium (Spiriva)
Duration of Aclidinium and Spiriva
A) 12 hours
B) 24 hours
Place in Therapy of Anticholinergics for COPD
Short Acting: initial therapy for Grp A
Long Acting: for Group B-D
MOA of Methylxanthines
inhibit PDE -- increased cAMP
Inhibit Calcium Ion influx to smooth muscle
Prostaglandin antagonism
Place in Therapy of Methylxanthines for COPD
1) intolerant or unable to use inhaled bronchodilators
2) limited role due to drug interactions and variability in dosing
MOA of inhaled corticosteroids for COPD
Reduce capillary permeability to decrease mucus

inhibit release of proteolytic enzymes

inhibit prostaglandins

HELP WITH INFLAMMATION
Place in Therapy of Inhaled Corticosteroids in COPD
*Not well established*
Recommended in severe - very severe disease and frequent exacerbations (Groups C and D)
Combination production with Long-Acting bronchodilator and ICS for COPD
Fluticasone/Vilanterol (Breo, Ellipta)
MOA of PDE 4 inhibitor for COPD
selectivity inhibit PDE type 4 -- increase cAMP -- decreased inflammation
PDE 4 inhibitor used in COPD
Roflumilast (Daliresp)
Dosing of Roflumilast (Daliresp) for COPD
500mcg once daily with or without food
ADRs of Roflumilast (Daliresp)
1) GI (N/V/D)
2) Weight loss (~2kg)
3) Psychiatric (insomnia, anxiety, depression, suicidal)
Drug interactions with Roflumilast (Daliresp)
*Metabolized by CYP3A4*

decrease levels (rifampin, phenytoin) - inducers
increase levels (erythromycin, ketoconazole) - inhibitors
Place in therapy of Roflumilast (Daliresp) in COPD
reduce risk of exacerbations in severe - very severe COPD associated with chronic bronchitis and a history of exacerbations
Recommended First Choice Therapy for Group A
Short acting anticholinergic PRN

OR

Short acting beta agonist PRN
Recommended First Choice Therapy for Group B
Long-Acting Anticholinergic

OR

Long-Acting Beta Agonist
Recommended First Choice Therapy for Group C
Inhaled corticosteroid + long-acting beta agonist

OR

Inhaled corticosteroid + long-acting anticholinergic
Recommended First Choice Therapy for Group D
Inhaled Corticosteroid + Long Acting Beta Agonist and/or long-acting anticholinergic
Other Pharmacotherapy for COPD
1) alpha1-antitrypsin replacement therapy
2) Antibiotics
3) Expectorants and mucolytics (WATER is best)
4) Narcotics
Dietary Supplements for COPD
1) Vitamins E,C, and beta carotene
Surgical Interventions in COPD
1) Bullectomy - removal of large air spaces
2) Lung Volume Reduction Surgery - remove parts of lung to reduce hyperinflation
3) Lung Transplantation - FEV1 < 20% and pulmonary HTN/ cor pulmonale AND exacerbations
COPD exacerbation
acute event characterized by a worsening of the patient's respiratory symptoms that is beyond normal day-to-day variations and leads to a change in medication
COPD exacerbations are caused by
1) Respiratory tract infections (viral or bacterial)
2) Air pollution
3) unknown
Symptoms and Signs of COPD exacerbation
1) increased sputum volume
2) worsening dyspnea
3) Chest tightness
4) Increased need for bronchodilators
5) Fever
6) wheezing
7) use of accessory muscles
8) Deteriorated mental status
Cardinal Symptoms of COPD exacerbation
1) Worsening Dyspnea
2) Increased sputum volume
3) increased sputum purulence
Mild COPD exacerbation
1 cardinal symptom PLUS at least one of the folowing:
1) URTI within 5 days
2) Unexplained fever
3) increased wheezing
4) increased cough
5) increased RR or HR >20% above baseline
Moderate COPD Exacerbation
2 cardinal symptoms
Severe COPD Exacerbation
3 cardinal symptoms
Indications for Hospital Assessment/Admission in COPD Exacerbation
1) marked increase in intensity of symptoms
2) Severe underlying COPD
3) Onset of new physical signs (cyanosis, edema)
4) Failure of exacerbation to respond to therapy
5) Older age
Indications for ICU admission in COPD exacerbation
1) Severe dyspnea that responds inadequately to initial emergency therapy
2) Changes in mental status
3) Worsening of hypoxemia and/or severe/worsening respiratory acidosis
4) need for invasive mechanical ventilation
Non-Pharm Treatment of COPD Exacerbation
1) Supplemental Oxygen Therapy - saturation > 88-92%
2) Non-invasive mechanical ventilation
Pharm Therapy for COPD exacerbation
1) Bronchodilators- increased doses and frequency (SABA preferred)
2) Corticosteroids - oral therapy preferred
3) Antimicrobials - 3 cardinal symptoms present, 2 cardinal symptoms and one is increased sputum purulence, mechanical ventilation
Antibiotics used for uncomplicated COPD exacerbations
1) Macrolides (azithromycin, clarithromycin)
2) 2nd or 3rd gen cephalosporins
3) Doxycycline
Cor Pulmonale
Right-sided heart failure secondary to pulmonary HTN

Treatment includes long-term oxygen therapy and diuretics along with COPD management
Polycythemia
Increased number of RBCs secondary to chronic hypoxemia (HCT >55%)

Treated with oxygen therapy or periodic phlebotomy
Respiratory Syncytial Virus
Single stranded RNA in Pneumovirus

Type A(severe), Type B(milder)

Highly contagious!!!!!
Presentation of RSV in adults/adolescents
common cold with significant sinus drainage
Presentation of RSV in children
1) starts as URTI
2) <2 years old = progress to LRTI
HIGH RISK FACTORS for RSV
1) <2yrs old with chronic lung disease (BPD)
2) <2yrs old with congenital heart disease (CHF, pulmonary HTN)
3) born before 35weeks w/ congenital abnormalities of airways or neuromuscular disease
4) premies born <28 weeks and are <12 months old at start of RSV season
5) premies born between 29-32 weeks and are <6 months old at the start of season
6) Premies born between 32-35 weeks and are <3 months old at start of season and have 1 of the following: daycare, sibling less than 5 yrs old
Signs and Symptoms of RSV
*Non-Specific*
1) low grade fever (<100.5, most wont have)
2) irritability (cranky, crying)
3) Lethargy
4) Poor feeding (young patients)
5) Rhinorrhea and congestion
6) Cough, dyspnea, wheezing in LRTI
Treatment of RSV
1) SUPPORTIVE CARE - MAINSTAY OF THERAPY
Bronchodilators used in RSV
1) widely used in the past but not proven to be effective
2) clinically still used to see if patients benefit
3) most have viral trigger for a reactie airway disease (similar to asthma)
4) used to treat RAD not the RSV
Inhaled Hypertonic Saline (3%) for RSV
1) thins secretions by drawing fluid to it

2) produces bronchospasms as an adverse effect

3) using this may lead to need for prophylactic albuterol q6h
Ribavirin for RSV
*ONLY DRUG WITH FDA INDICATION FOR RSV*
1) must be started within 72 hours of onset of infection
2) 6g/day via neb over 12-18 hours for 3-14 days
3) TERATOGENIC
Prophylaxis of RSV
*HIGHEST RISK ONLY -- 6 risk factors*
1) Synagis (Palivizumab) - monoclonal antibody; 15mg/kg IM monthly over 5 months
2) Numax (motavizumab) - monoclonal antibody with higher affinity for RSV fusion proteins
3 forms of Croup
1) Viral - not life threatening
2) Epiglottitis - life-threatening
3) Bacterial Tracheitis - life threatening
Viral Croup
Most common

affects younger children in fall and early winter

Inflammation of entire airway exists, but edema of SUBGLOTTIC space!
Signs/Symptoms of Viral Croup
Prodrome: URTI
1) barking like cough and inspiratory stridor
2) fever is absent or low grade
3) Severe--stridor at rest, air hunger, cyanosis
Treatment of Viral Croup
MILD: managed at home and oral rehydration

Stridor Present: oxygen, Racemic Epinephrine 2.25% (DO NOT USE ALBUTEROL)

Dexamethasone
Dose of Dexamethasone for Viral Croup
0.6mg/kg IM for 1 dose only!!!
Eppiglottitis
*TRUE MEDICAL EMERGENCY*
epiglottis and other supraglottic structures swell and obstruct the airway

Cause: H. Influenza type B
Signs/Symptoms of Epiglottitis
*Sudden Onset*
1) fever
2) dysphagia
3) drooling
4) muffled voices
5) inspiratory retractions
6) Sniffing-Dog Position
Treatment of Epiglottitis
1) endotracheal intubation performed immediately
2) Antibiotic (gram + cocci and beta lactam) -- Cefuroxime
Bacterial Tracheitis
bacterial superinfection of the mucosa effected by viral croup resulting in inflammatory edema, purulent secretions and pseudomembranes

Cause: Staph aureus
Signs/Symptoms of Bacterial Tracheitis
1) early infection mimics viral croup
2) then high fever, toxic look, progressive airway obstruction
3) sudden respiratory arrest or progressive respiratory failure (risk is high)
Treatment for Bacterial Tracheititis
1) intubation is necessary in most cases
2) antibiotic (cover Staph aureus and H influenzae)
TRADITIONAL: Antibiotic used in bacterial tracheitits
Cefotaxime
Antibiotic used in bacterial tracheititis in community acquired MRSA in highly prevalent
Clindamycin
Antibiotic used in bacterial tracheititis in patient is highly toxic or has multple organ involvement
Vanco
Shut the hell up Ellie---don't make fun of my spelling mistakes!
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