Pulmonology Flashcards
Most common cause of cancer death in the world
Lung carcinoma
90% of lung cancer cases are associated with
Smoking
25% of lung cancer is ___________, and 75% is ___________
Small-cell
Non small-cell
Most common type of non-small cell lung cancer, and second most common
Adenocarcinoma
Squamous cell carcinoma
Screening for lung cancer
- > 55 y/o
- 30 pack year smoker
- Must have smoked in last 15 years
Screen annually w/ low dose chest CT
Stop screening at 80 or if stopped smoking in 15 years
Signs/Symptoms of lung cancer
Persistent cough
Hemoptysis
Weight loss
Diagnosis of lung cancer
- CXR
- Chest CT
- Biopsy
Very aggressive type of lung cancer, where majority will have metastasis at time of diagnosis
Small cell carcinoma
Small cell carcinoma is associated with what diseases?
- SIADH
- Cushing’s syndrome
- Lambert Eaton’s syndrome
Risk factor for sleep apnea
Obesity
Physical airway obstruction (may be due to external airway compression, decreased pharyngeal muscle tone, increased tonsillar size or deviated septum)
Obstructive Sleep Apnea
Snoring, unrestful sleep, nocturnal choking, large neck circumference, crowded oropharynx
Obstructive Sleep Apnea
Diagnosis of sleep apnea
In laboratory polysomnography
Labs: polycythemia
Management of sleep apnea
CPAP is mainstay
Behavioral - weight loss, exercise, abstaining from alcohol
Oral appliances can be tried
Surgical correction
Complications of sleep apnea
Pulmonary hypertension
Arrhythmias
Reverse hyperirritability of the tracheobronchial tree, leading to airway inflammation and bronchoconstriction
Asthma
Most common chronic childhood disease
Asthma
Samter’s Triad
- Asthma
- Nasal polyps
- ASA/NSAID allergy
Classic triad of symptoms of asthma
- Dyspnea
- Wheezing
- Cough (esp at night)
Clues to severity of asthma
Steroid use
Previous intubations
ICU/hospital admissions
Prolonged expiration with wheezing, hyperresonance to percussion, decreased breath sounds, tachycardia
Asthma
Gold standard testing for asthma
Pulmonary Function Test showing reversible obstruction
Diagnosis for asthma
- PFTs
- Bronchoprovocation - bronchodilator challenge test (> 12% increase in FEV1)
- Peak Expiratory Flow Rate
- Pulse Oximetry
- ABG - hypoxia and hypercapnia
- CXR
S/E of short acting beta agonists (SABA)
Tachycardia Arrhythmias Muscle tremors CNS stimulation Hypokalemia
S/E of ipratropium (anticholinergic)
Thirst Blurred vision Dry mouth Urinary retention Dysphagia Acute glaucoma BPH
S/E of inhaled corticosteroids - beclomethasone, flunisolide, triamcinolone
thrush - using spacer and rinsing mouth after inhaler decreases risk
Adjuncts for asthma management
IV Magnesium - bronchodilator
Omalizumab - used in severe, uncontrolled asthma
Inflammation of trachea/bronchi (conducting airways). Often follows URI
Bronchitis
Bronchitis is mostly caused by:
Viruses
Adenovirus
Parainfluenza, influenza, etc.
Cough is hallmark, +/- productive, may last 1-3 weeks, symptoms similar to pneumonia sometimes
Bronchitis
Diagnosis of Bronchitis
- Clinical w/o need for imaging
2. Order CXR if pneumonia is suspected
Management of bronchitis
Symptomatic tx of choice - fluids, rest, antitussives, bronchodilators
Abx not needed
Progressive, largely irreversible airflow obstruction due to loss of elastic recoil and increased airway resistance
Chronic obstructive pulmonary disease
Chronic bronchitis is usually ________, while emphysema usually has a __________
Episodic
Steady decline
Risk factors for COPD
Cigarette/smoking exposure (MC)
Alpha-1 antitrypsin deficiency
Abnormal, permanent enlargement of the terminal airspaces, leading to air trapping
Emphysema
Productive cough > 3 months x 2 consecutive years
Chronic bronchitis
Most common symptom of emphysema
Dyspnea
Hyperinflation on physical exam, hyperresonance to percussion, decreased/absent breath sounds, decreased fremitus, barrel chest. Pursed lip breathing
Emphysema
Appearance: cachectic, pursed lip breathing, pink puffers
Emphysema
Rales (crackles), rhonchi, wheezing on physical exam , with change in location with cough
Chronic bronchitis
Appearance: obese and cyanotic, blue bloaters
Chronic bronchitis
Diagnostic studies of COPD
- PFT/spirometry - gold standard
- CXR/CT scan
- ECG - cor pulmonale
Most important step in management of COPD
Smoking cessation
Microaspiration of oropharyngeal secretions is most common route of nifection
Pneumonia
Most common cause of CAP
Streptococcus pneumoniae
2nd most common cause of CAP
Haemophilus influenzae
Most common cause of atypical (walking) pneumonia
Mycoplasma pneumoniae
Additional symptoms with atypical walking pneumonia caused by mycoplasma
Pharyngitis, ear (bullous myringitis), URI symptoms
Additional symptoms with legionella pneumonia
GI symptoms: anorexia, N/V/D
Increased LFTs, hyponatremia
Most common cause of pneumonia in severe EtOHics
Klebsiella pneumoniae
Most common viral cause of pneumonia in infants/small children
RSV and parainfluenza
Most common viral cause of pneumonia in adults
Influenza
Most common cause of pneumonia in the mississippi and ohio river valley - soil contaminated with bird/bat droppings
Histoplasma cpsulatum
When to hospitalize with pneumonia
- Multilobar
- Neutropenia
- Patients have comorbidities that may complicate treatment
Sudden onset of fever, productive cough with purulent sputum, pleuritic chest pain, tachycardia, tachypnea
Pneumonia
Bronchial breath sounds, dullness on percussion, increased tactile fremitus, egophony, inspiratory rales (crackles) on physical exam
Pneumonia
Low grade fever, dry, nonproductive cough, extrapulmonary sx: myalgias, malaise, sore throat, HA, N/V/D
Atypical pneumonia
CXR with atypical pneumonia
diffuse, patchy interstitial or reticulonodular infiltrates
Diagnosis of pneumonia
- CXR/CT scan
2. Sputum (gram stain/culture)
Currant jelly sputum
Klebsiella
Green sputum
H. flu, pseudomonas
Rusty (blood tinged) sputum
Strep pneumoniae
Management of CAP outpatient pneumonia
Macrolide or Doxycycline
Fluoroquinolones only if comorbid conditions or recent abx use
Management of CAP inpatient pneumonia
Beta lactam + macrolide or broad spectrum fluoroquinolone
Management of hospital acquired pneumonia
B lactam + aminoglycoside or fluoroquinolone
Management of aspiration pneumonia
Clindamycin or Metronidazole or Augmentin
Chronic infection with Mycobacterium leading to granuloma formation
Tuberculosis
Chronic productive cough, chest pain, hemoptysis, night sweats, fever/chills, anorexia, weight loss
Tuberculosis
TB Screening for infection
PPD (purified protein derivative)
examine 48-72 hours for transverse induration (redness not considered positive)
For someone with no known risk factors, a positive PPD test is considered if:
> 15 mm
Diagnosis of tuberculosis
- Acid-Fast Smear and Sputum culture x 3 days
AFB cultures gold standard - CXR
- Interferon Gamma Release Assay
Treatment of active TB infection
RIPE - Rifampin + INH + Pyrazinamide + Ethambutol
How long is the total treatment duration for active TB infection?
6 months
S/E of rifampin
Orange colored secretions (tears, urine)
Treatment of latent TB
INH + Pyridoxine x 9 months