pulmonary fibrosis & bronchiectasis omer alamoudi, md, frcp, fccp, facp professor, consultant...
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Pulmonary Fibrosis &Pulmonary Fibrosis & BronchiectasisBronchiectasis
Omer Alamoudi, MD, FRCP, FCCP, FACPOmer Alamoudi, MD, FRCP, FCCP, FACP
Professor, consultant PulmonologistProfessor, consultant Pulmonologist
Department of Medicine, KAUHDepartment of Medicine, KAUH
Email: [email protected]: [email protected]
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Pulmonary fibrosis, Idiopathic (IPF)Pulmonary fibrosis, Idiopathic (IPF)
DefinitionDefinition
CausesCauses
Clinical presentationClinical presentation
pathologypathology
DiagnosisDiagnosis
ManagementManagement
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Idiopathic Pulmonary fibrosis (IPF)Idiopathic Pulmonary fibrosis (IPF)DefinitionDefinition
Chronic progressive Chronic progressive disease of unknown disease of unknown etiologyetiology
Characterized by Characterized by inflammation and fibrosis inflammation and fibrosis of the lung parenchymaof the lung parenchyma
Lung interstitium and Lung interstitium and alveolialveoli
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Pulmonary fibrosis, Idiopathic (IPF)Pulmonary fibrosis, Idiopathic (IPF)
DefinitionDefinition
CausesCauses
Clinical presentationClinical presentation
PathologyPathology
DiagnosisDiagnosis
ManagementManagement
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IPFIPFCausesCauses
Unknown (90%)Unknown (90%)Familial (AD)Familial (AD)Viral (Epstein Barr virus)Viral (Epstein Barr virus)Collagen vascular disorder Collagen vascular disorder (RA, scleroderma, SLE, (RA, scleroderma, SLE, dermatomyositis)dermatomyositis)AsbestosisAsbestosis Drugs (Amiodarone, Drugs (Amiodarone, Busulphan, Bleomycin)Busulphan, Bleomycin)
PCPPCPRadiation pneumonitisRadiation pneumonitisRecurrent Intraalveolar Recurrent Intraalveolar hemorrhageshemorrhagesChronic aspiration Chronic aspiration pneumoniapneumoniaSmoking, wood, metal dust Smoking, wood, metal dust exposureexposureGranulomatosis Granulomatosis (Sarcoidosis, (Sarcoidosis, histoplasmosis)histoplasmosis)
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Pulmonary fibrosis, Idiopathic (IPF)Pulmonary fibrosis, Idiopathic (IPF)
DefinitionDefinition
CausesCauses
Clinical presentationClinical presentation
pathologypathology
DiagnosisDiagnosis
ManagementManagement
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Pulmonary fibrosis, Idiopathic (IPF)Pulmonary fibrosis, Idiopathic (IPF)Clinical presentationClinical presentation
Onset:Onset: Usually between 50 and 70 yr Usually between 50 and 70 yr
Clinical presentationClinical presentation– Progressive dyspnea on exertionProgressive dyspnea on exertion– Paroxysmal cough, usually nonproductiveParoxysmal cough, usually nonproductive– Clubbing of the fingers (50%)Clubbing of the fingers (50%)– Fine inspiratory basal crackles chest auscultation Fine inspiratory basal crackles chest auscultation – Abnormal chest x-ray or HRCTAbnormal chest x-ray or HRCT– Restrictive pulmonary physiology with reduced Restrictive pulmonary physiology with reduced
lung volumes and DLCO and widened AaPOlung volumes and DLCO and widened AaPO22
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Pulmonary fibrosis, Idiopathic (IPF)Pulmonary fibrosis, Idiopathic (IPF) Clinical presentationClinical presentation
Signs of pulmonary hypertensionSigns of pulmonary hypertension– Loud P 2Loud P 2– Right ventricular heaveRight ventricular heave– RBBBRBBB
Signs of Corpulmonale and Rt heart failureSigns of Corpulmonale and Rt heart failure– Raised JVPRaised JVP– Hepatomegaly, ascitisHepatomegaly, ascitis– Lower limb edemaLower limb edema
Signs of underlying causes (RA, scleroderma)Signs of underlying causes (RA, scleroderma)
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Pulmonary fibrosis, Idiopathic (IPF)Pulmonary fibrosis, Idiopathic (IPF)
DefinitionDefinition
ClassificationClassification
pathogenesispathogenesis
CausesCauses
Clinical presentationClinical presentation
PathologyPathology
DiagnosisDiagnosis
ManagementManagement
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IPF: IPF: PathologyPathology
UIP is essential to diagnosis of IPFUIP is essential to diagnosis of IPF– Idiopathic, progressive, diffuse fibrosing Idiopathic, progressive, diffuse fibrosing
inflammatory process inflammatory process – Involves lung parenchymaInvolves lung parenchyma
Surgical lung biopsy Surgical lung biopsy – suspected IPFsuspected IPF
– Atypical clinical or radiographic featuresAtypical clinical or radiographic features
Major purpose of histologic examination is to Major purpose of histologic examination is to distinguish UIP from other histologic subsets of IIPdistinguish UIP from other histologic subsets of IIP
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HISTOPATHOLOGIC ELEMENTS HISTOPATHOLOGIC ELEMENTS OF UIPOF UIP
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CHRONIC INTERSTITIAL INFLAMMATION CHRONIC INTERSTITIAL INFLAMMATION IN UIPIN UIP
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Pulmonary fibrosis, Idiopathic (IPF)Pulmonary fibrosis, Idiopathic (IPF)
DefinitionDefinition
CausesCauses
Clinical presentationClinical presentation
PathologyPathology
DiagnosisDiagnosis
ManagementManagement
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IPFIPFDiagnosisDiagnosis
Major criteriaMajor criteria
– Exclusion of other known causes of ILDExclusion of other known causes of ILD
– Restrictive pulmonary function studiesRestrictive pulmonary function studies
– Bibasilar reticular abnormalities on HRCT scanBibasilar reticular abnormalities on HRCT scan
– No histologic or cytologic features on transbronchial lung No histologic or cytologic features on transbronchial lung biopsy or BAL analysis supporting another diagnosisbiopsy or BAL analysis supporting another diagnosis
Minor criteriaMinor criteria
– Age >50 yrAge >50 yr
– Insidious onset of otherwise unexplained exertional Insidious onset of otherwise unexplained exertional dyspneadyspnea
– Duration of illness Duration of illness 3 mo3 mo
– Bibasilar, dry (“Velcro”) inspiratory cracklesBibasilar, dry (“Velcro”) inspiratory crackles
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Diagnosis IPFDiagnosis IPF
Chest radiographChest radiograph– Early: ground glass Early: ground glass
appearance appearance– Late: reticular, Late: reticular,
reticulonodular, reticulonodular, honeycombing at the honeycombing at the peripheryperiphery
– Deviation of trachea Deviation of trachea to the rightto the right Bilateral lower lobe opacities Bilateral lower lobe opacities
and possible mild decrease in and possible mild decrease in lung volumeslung volumes. .
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Diagnosis IPFDiagnosis IPF
Chest radiographChest radiograph
– Reduction of the Reduction of the lung volumelung volume
– Pleural involvement, Pleural involvement, adenopathy, adenopathy, localized localized parenchymal parenchymal densities (very rare)densities (very rare)
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Diagnosis IPFDiagnosis IPFHigh Resolution CT (HRCT)High Resolution CT (HRCT)
HRCTHRCT– Useful to differentiate IPF from other ILDUseful to differentiate IPF from other ILD– Determine the severity and extent of the diseaseDetermine the severity and extent of the disease– Select the place for biopsySelect the place for biopsy
FindingsFindings– Patchy, ground glass attenuation, thickened Patchy, ground glass attenuation, thickened
interlobular septaeinterlobular septae– Traction bronchiectasisTraction bronchiectasis– Reticular pattern, honeycombingReticular pattern, honeycombing
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Diagnosis IPFDiagnosis IPFHRCTHRCT
Distortion of the Distortion of the pulmonary pulmonary architecture architecture
Thickening of Thickening of pulmonary pulmonary interstitiuminterstitium
Ground-glass Ground-glass attenuation. attenuation.
No obvious No obvious honeycombing is honeycombing is present present
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Diagnosis IPFDiagnosis IPF HRCTHRCT
Advanced stage Advanced stage of pulmonary of pulmonary fibrosisfibrosis
Reticular Reticular opacitiesopacities
Honeycombing, Honeycombing, predominantly predominantly subpleural subpleural distribution. distribution.
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HRCT FINDINGS IN IPFHRCT FINDINGS IN IPF
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Diagnosis IPFDiagnosis IPFPulmonary function testsPulmonary function tests
Restrictive patternRestrictive pattern– ↓ ↓ FVCFVC– ↓ ↓ FEV1FEV1– ↑↑FEV1/FVCFEV1/FVC
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Diagnosis IPFDiagnosis IPFPulmonary function tests Pulmonary function tests
Restrictive patternRestrictive pattern
Lung volumes ( TLC, RV, FRC Lung volumes ( TLC, RV, FRC ↓↓), DLCO ), DLCO ↓↓
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Diagnosis IPFDiagnosis IPF
ABG ABG – PO2PO2 Reduced (V/Q mismatch)Reduced (V/Q mismatch)– PCO2PCO2 Normal or ReducedNormal or Reduced
Increased (End stage)Increased (End stage)
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Diagnosis IPFDiagnosis IPF
Bronchoscopy & Bronchoalveolar lavage (BAL)Bronchoscopy & Bronchoalveolar lavage (BAL)– Assess progression of diseaseAssess progression of disease– Assess response to therapyAssess response to therapy– Assess prognosis of diseaseAssess prognosis of disease
LymphocyteLymphocyte Good prognosis/ Good prognosis/ respond to therapyrespond to therapy
Eosinophil &Eosinophil & neutrophilsneutrophils Poor prognosis/ Poor prognosis/
no response to steroidno response to steroid
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Diagnosis IPFDiagnosis IPF
Other testsOther tests– Lung biopsy (open vs TBBB) most importantLung biopsy (open vs TBBB) most important– Gallium-67 increased (not useful)Gallium-67 increased (not useful)– PET (position emission tomography)PET (position emission tomography)
Glucose uptake increasedGlucose uptake increased
– ESR, ANA, RFESR, ANA, RF
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Pulmonary fibrosis, Idiopathic (IPF)Pulmonary fibrosis, Idiopathic (IPF)
DefinitionDefinition
CausesCauses
Clinical presentationClinical presentation
PathologyPathology
DiagnosisDiagnosis
ManagementManagement
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THERAPEUTIC APPROACHES TO IPFTHERAPEUTIC APPROACHES TO IPF
CorticosteroidsCorticosteroids
Other immunosuppressivesOther immunosuppressives
– AzathioprineAzathioprine
– CyclophosphamideCyclophosphamide
Antifibrotic agentsAntifibrotic agents
– ColchicineColchicine
– D-PenicillamineD-Penicillamine
– IFN-IFN-– IFN-IFN-– PirfenidonePirfenidone
Antioxidant agentsAntioxidant agents
– GlutathioneGlutathione
– N-acetylcysteineN-acetylcysteine
– OthersOthers
Agents that block neutrophil Agents that block neutrophil adhesion moleculesadhesion molecules
Inhibitors of specific Inhibitors of specific fibrogenic cytokines and fibrogenic cytokines and growth factors growth factors
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IPFIPFManagementManagement
Should started as early as possibleShould started as early as possible
Duration of therapy 3-6 monthsDuration of therapy 3-6 months
CorticosteroidsCorticosteroids– Prednisone tabletsPrednisone tablets
Dose 1-1.5mg/kg (30Mg)Dose 1-1.5mg/kg (30Mg)– Methyl prednisone (pulse therapy 3-5 days)Methyl prednisone (pulse therapy 3-5 days)
Dose 1 gm/dayDose 1 gm/day
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IPFIPFManagementManagement
How to assess the response to therapyHow to assess the response to therapy– Reduction of symptomsReduction of symptoms– Improvement of lung function testsImprovement of lung function tests– Improvement of DLCOImprovement of DLCO– Improvement of chest x ray (alveolitis)Improvement of chest x ray (alveolitis)
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IPFIPFManagementManagement
CyclophosphamideCyclophosphamide– Dose 2 mg/kg/day (max 200 mg/day)Dose 2 mg/kg/day (max 200 mg/day)– Leucopenia (WBC < 3000)Leucopenia (WBC < 3000)– Opportunistic infectionOpportunistic infection– Ca bladderCa bladder– Hemorrhagic cystitisHemorrhagic cystitis
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IPFIPFManagementManagement
AzathioprineAzathioprine– 1-2mg/kg/day (max 200Mg/day)1-2mg/kg/day (max 200Mg/day)– GIT symptomsGIT symptoms– Bone marrow suppressionBone marrow suppression– Increase liver enzymesIncrease liver enzymes– Leucopenia, and thrombocytopenia (WBC< 3000)Leucopenia, and thrombocytopenia (WBC< 3000)
Colchicine (anti-inflammatory)Colchicine (anti-inflammatory)– Dose 0.5mg BIDDose 0.5mg BID
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IPFIPFManagementManagement
Oxygen supply (rest and exercise) if PO2< 55 mmHgOxygen supply (rest and exercise) if PO2< 55 mmHg
Lung transplantation Lung transplantation – Age <60Age <60– Progressive diseaseProgressive disease– Lack of response to therapyLack of response to therapy
Psychosocial supportPsychosocial support
Influenza vaccineInfluenza vaccine
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CAUSE OF DEATHCAUSE OF DEATH
IPF[N=543]
1-7 year FU
60% Died[N=326]
Respiratory failure39%
Lung cancer
10%
Pulmonaryembolism
3%
Pulmonary infection
3%
Cardiovasculardisease
27%
Other18%
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RISK FACTORS FOR PROGRESSIVE DISEASERISK FACTORS FOR PROGRESSIVE DISEASE
Age: >50 yrGender: maleDyspnea: moderate to severe with exertionHistory of cigarette smokingLung function: moderate to severe loss (especially gas exchange with exercise)BAL fluid: neutrophilia or eosinophilia at presentationHRCT scan: reticular opacities or honeycomb changesResponse to corticosteroids: poorPathology: more fibrosis, fibroblastic foci
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BronchiectasisBronchiectasis
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BronchiectasisBronchiectasis
DefinitionDefinition
EtiologyEtiology
Clinical findingsClinical findings
DiagnosisDiagnosis
ManagementManagement
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BronchiectasisBronchiectasis
DefinitionDefinition
– Acquired disorder disorder affecting the major affecting the major bronchi and bronchiolesbronchi and bronchioles
– Permanent dilatation and Permanent dilatation and destruction of bronchial destruction of bronchial wallwall
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BronchiectasisBronchiectasis
DefinitionDefinition
EtiologyEtiology
PathophysiologyPathophysiology
Clinical findingsClinical findings
DiagnosisDiagnosis
ManagementManagement
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BronchiectasisBronchiectasis
Factors trigger bronchiectasisFactors trigger bronchiectasis
InfectionInfection
Impairment of drainageImpairment of drainage
Airway obstructionAirway obstruction
Defect of host defenseDefect of host defense
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Causes of BronchiectasisCauses of Bronchiectasis
Etiology Etiology
Pulmonary infectionsPulmonary infections– TuberculosisTuberculosis– Viral, Mycoplasma PneumoniaViral, Mycoplasma Pneumonia– Pertussis (whooping cough)Pertussis (whooping cough)– Mycobacterium Avium intracellulare (MAI)Mycobacterium Avium intracellulare (MAI)
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Causes of BronchiectasisCauses of Bronchiectasis
Airway obstructionAirway obstruction– FB aspirationFB aspiration
Rt lung, lower lobesRt lung, lower lobes
Obstructive pneumonia, focal bronchiectasisObstructive pneumonia, focal bronchiectasis
– LN enlargementLN enlargement
Rt middle lobe syndromeRt middle lobe syndrome
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Causes of BronchiectasisCauses of Bronchiectasis
Defective host defensesDefective host defenses– LocalLocal
Ciliary DyskinesiaCiliary Dyskinesia– SystemicSystemic
HypogammaglobulinemiaHypogammaglobulinemia
AIDSAIDS
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Causes of BronchiectasisCauses of Bronchiectasis
Rheumatic diseasesRheumatic diseases
Rheumatoid arthritisRheumatoid arthritis
Sjogren’s syndromeSjogren’s syndrome
Inflammatory bowel diseasesInflammatory bowel diseases
Ulcerative colitisUlcerative colitis
Crohns diseaseCrohns disease
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Causes of BronchiectasisCauses of Bronchiectasis
Kartagener’s syndromeKartagener’s syndrome– Immotile ciliaImmotile cilia
(Dextrocardia, Sinusitis, Bronchiectasis)(Dextrocardia, Sinusitis, Bronchiectasis)
Young’s SyndromeYoung’s Syndrome(Sinusitis, Obstructive azoospermia, (Sinusitis, Obstructive azoospermia, Bronchiectasis)Bronchiectasis)
Cystic fibrosisCystic fibrosis
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Causes of BronchiectasisCauses of Bronchiectasis
Allergic bronchopulmonary aspergillosis (ABPA)Allergic bronchopulmonary aspergillosis (ABPA)
Central bronchiectasisCentral bronchiectasis
High IgE levelHigh IgE level
Precipitating, specific antibodies to AspergillusPrecipitating, specific antibodies to Aspergillus
Long standing asthmaLong standing asthma
Cigarette smokingCigarette smoking
Idiopathic (50%)Idiopathic (50%)
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BronchiectasisBronchiectasis
DefinitionDefinition
EtiologyEtiology
Clinical findingsClinical findings
DiagnosisDiagnosis
ManagementManagement
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BronchiectasisBronchiectasis
Clinical findingsClinical findings– SymptomsSymptoms
CoughCough
Daily sputum production Daily sputum production
DyspneaDyspnea
HemoptysisHemoptysis
Recurrent pleurisyRecurrent pleurisy
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BronchiectasisBronchiectasis
Clinical findingsClinical findings
– SignsSigns
Coarse cracklesCoarse crackles
Finger ClubbingFinger Clubbing (50%)(50%)
RhonchiRhonchi
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BronchiectasisBronchiectasis
DefinitionDefinition
EtiologyEtiology
Clinical findingsClinical findings
DiagnosisDiagnosis
ManagementManagement
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BronchiectasisBronchiectasis
Diagnostic evaluationDiagnostic evaluation
Complete blood count, differential
Immunoglobulin levels (IgG, IgM, IgA)
Sputum culture, smear (TB, Fungi)
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BronchiectasisBronchiectasis
Diagnostic evaluationDiagnostic evaluation– Chest radiography (PA, lateral)Chest radiography (PA, lateral)
Abnormal in most patientsAbnormal in most patients
Linear atelectasisLinear atelectasis
Dilated , thickened airways (tram, parallel lines, Dilated , thickened airways (tram, parallel lines, ring shadows)ring shadows)
Central Central →→ ABPA ABPA
Upper lobe (TB, cystic fibrosis)Upper lobe (TB, cystic fibrosis)
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BronchiectasisBronchiectasis
Diagnostic evaluationDiagnostic evaluation
– High resolution CT scanning (HRCT)High resolution CT scanning (HRCT)
Airway dilatationAirway dilatation
Bronchial wall thickeningBronchial wall thickening
Cystic changesCystic changes
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BronchiectasisBronchiectasis
DefinitionDefinition
EtiologyEtiology
Clinical findingsClinical findings
DiagnosisDiagnosis
ManagementManagement
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BronchiectasisBronchiectasis
Treatment of infectionTreatment of infection– Acute exacerbationAcute exacerbation
Streptococcus pn., H. influenzaeStreptococcus pn., H. influenzae
Amoxycillin-clavulinic acidAmoxycillin-clavulinic acid
ClarithromycinClarithromycin
CefuroximeCefuroxime
Duration 10-14 daysDuration 10-14 days
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BronchiectasisBronchiectasis
PseudomonasPseudomonas– Extensive bronchiectasisExtensive bronchiectasis– Difficult to eradicateDifficult to eradicate– Poor quality of lifePoor quality of life– Increased no of hospitalizationIncreased no of hospitalization
Ciprofloxacin orally or IV, aerosolized Ciprofloxacin orally or IV, aerosolized
BronchodilatorBronchodilator
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BronchiectasisBronchiectasis
AspergillusAspergillus
– Itraconazole 400mg/dayItraconazole 400mg/day
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BronchiectasisBronchiectasis
Bronchial hygieneBronchial hygiene– Hydration and mucus clearanceHydration and mucus clearance
Oral liquidsOral liquids
Nebulization with saline solution, mucolytic Nebulization with saline solution, mucolytic agents (DNase)agents (DNase)
– PhysiotherapyPhysiotherapy
Chest percussion techniqueChest percussion technique
Mechanical vibratorMechanical vibrator
15-30 min/session, 2-3 times/day15-30 min/session, 2-3 times/day
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BronchiectasisBronchiectasis
BronchodilatorsBronchodilators– Airway reactivityAirway reactivity
Nebulized SalbutamolNebulized Salbutamol
Anti-inflammatory medicationsAnti-inflammatory medications
Inhaled corticosteroids Inhaled corticosteroids
Beclomethasone, budesonideBeclomethasone, budesonide
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BronchiectasisBronchiectasis
SurgerySurgery– IndicationsIndications
Removal destroyed lungRemoval destroyed lung
Reduction in overwhelming purulent sputum Reduction in overwhelming purulent sputum productionproduction
Uncontrolled hemorrhageUncontrolled hemorrhage
Removal of area harboring resistant organism Removal of area harboring resistant organism
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BronchiectasisBronchiectasis
Bronchial artery embolizationBronchial artery embolization– Intractable bleedingIntractable bleeding
Preserve lung tissuePreserve lung tissue
Avoid thoracotomyAvoid thoracotomy
Lung transplantationLung transplantation– Controversial Controversial
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IPF vs BronchiectasisIPF vs Bronchiectasis
Bilateral, BasalBilateral, Basal
Sputum –veSputum –ve
Dry coughDry cough
Alveoli / interstitiumAlveoli / interstitium
Hypoxemia ++Hypoxemia ++
Fine cracklesFine crackles
Restrictive patternRestrictive pattern
Unilateral or bilateralUnilateral or bilateral
Sputum ++++Sputum ++++
Productive coughProductive cough
AirwaysAirways
Hypoxemia ±Hypoxemia ±
Coarse cracklesCoarse crackles
Obstructive/restrictiveObstructive/restrictive
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Quiz 1Quiz 1
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Quiz 2: What is the diagnosis
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Thank youThank you
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Suggested Text book to readSuggested Text book to read
Davidson’s principle of internal medicineDavidson’s principle of internal medicine