is it really copd? dr rod taylor consultant respiratory physician calderdale royal hospital dr rod...
TRANSCRIPT
Is it really Is it really
COPD?COPD?Is it really Is it really
COPD?COPD?
Dr Rod TaylorDr Rod TaylorConsultant Respiratory PhysicianConsultant Respiratory Physician
Calderdale Royal HospitalCalderdale Royal Hospital
Dr Rod TaylorDr Rod TaylorConsultant Respiratory PhysicianConsultant Respiratory Physician
Calderdale Royal HospitalCalderdale Royal Hospital
The Breathless The Breathless PatientPatient
Chest Clinic
Definition of COPDDefinition of COPD
• airflow obstructionairflow obstruction• usually stable
• not fully reversible
• worsens gradually
• smoking main cause
• airflow obstructionairflow obstruction• usually stable
• not fully reversible
• worsens gradually
• smoking main cause
Airflow obstructionAirflow obstruction
No spirometry = no COPD!No spirometry = no COPD!
Function and Function and CauseCause
• COPD = abnormal function• airflow obstruction• doesn’t get better
• COPD = abnormal function• airflow obstruction• doesn’t get better
• What disease caused it? • Can have two diagnoses
• presence of COPD• disease responsible for it
I’ve got asthma!
There will be
trouble!
Where to start?Where to start?
• History
• Examination
• Investigations
• History
• Examination
• Investigations
Sir William OslerSir William Osler
Listen to the patient; he is
telling youthe
diagnosis.
Smoker… or ex-Smoker… or ex-smoker?smoker?
Ian Flemingborn 1908, died 1964
Ian Flemingborn 1908, died 1964
Once been a smokerOnce been a smokeralways an ex-smokeralways an ex-smokernevernever a non-smokera non-smoker
Once been a smokerOnce been a smokeralways an ex-smokeralways an ex-smokernevernever a non-smokera non-smoker
Smoking HistorySmoking History
No. of Packs/dayNo. of Packs/dayXX
No. of Years smokedNo. of Years smoked……………………………………………………
COPD patientsCOPD patients~ 20 pack-years~ 20 pack-years
No. of Packs/dayNo. of Packs/dayXX
No. of Years smokedNo. of Years smoked……………………………………………………
COPD patientsCOPD patients~ 20 pack-years~ 20 pack-years
20
The HistoryThe History
• How long breathless?
• How did it start?
• Is it getting worse?
• How quickly?
• Any previous respiratory trouble?
• How long breathless?
• How did it start?
• Is it getting worse?
• How quickly?
• Any previous respiratory trouble?
Bucket and Spoon?
Maximum at age 25: start with a bucketfulMaximum at age 25: start with a bucketful
Lose FEV1 at a spoonful (about 25 ml) per year:natural ageing process
~ 1 litre over 40 years
Lose FEV1 at a spoonful (about 25 ml) per year:natural ageing process
~ 1 litre over 40 years
Poor Function when Poor Function when OldOld
Normal sizeNormal sizeMore than a
spoonful/yearMore than a
spoonful/year
Fletcher and PetoFletcher and Peto
Charles FletcherCharles Fletcher Richard PetoRichard Peto
Fletcher-Peto Diagram: Fletcher-Peto Diagram: 19771977
Overflowing Bathtub
It was that last
spoonful which decided
Quackie’s fate.
It was that last
spoonful which decided
Quackie’s fate.
Gulp!
Two Populations of Smokers?
Nu
mb
er
of
Su
bje
cts
Rate of decline in FEV1
Normal
COPD
Decline in Smokers
Smokers Nonsmokers
Rate of Decline in FEV1
Nu
mb
er
of
Su
bje
cts
Decline in Lung Function
Frequ
ency
Rate of loss of FEV1
COPD
What have you What have you inhaled?inhaled?
WorkWork HobbiesHobbies PetsPets
Clinical Clinical ExaminationExamination
• airflow obstruction• but insensitive• doesn’t tell cause
• anything else?
• airflow obstruction• but insensitive• doesn’t tell cause
• anything else?
Hmm…
Hmm…
Hmm…
Gulp!
Low resting SaO2
SaO2 falls on exercise
Low resting SaO2
SaO2 falls on exercise
Chest X-rayChest X-ray
Good for structureGood for structureBad for functionBad for function
Good for structureGood for structureBad for functionBad for function
AlphaAlpha11-antitrypsin-antitrypsin
• protein which ‘protects lungs’
• hereditary pattern
• deficiency discovered 1963
• causes premature emphysema
• think of it if young COPD
• protein which ‘protects lungs’
• hereditary pattern
• deficiency discovered 1963
• causes premature emphysema
• think of it if young COPD
Breathless PatientBreathless Patient
If it’s not COPDIf it’s not COPD
- is it asthma?- is it asthma?
If it’s not COPDIf it’s not COPD
- is it asthma?- is it asthma?
Is it asthma?Is it asthma?
• May never have smoked
• Symptoms before age 35
• Variable breathlessness
• Breathless at night
• Several things bring it on
• May never have smoked
• Symptoms before age 35
• Variable breathlessness
• Breathless at night
• Several things bring it on
Peak FlowPeak Flow
• serial readingsserial readings
• twice a daytwice a day
• three each timethree each time
• variability > 20%variability > 20%
• serial readingsserial readings
• twice a daytwice a day
• three each timethree each time
• variability > 20%variability > 20%
Bronchodilator Bronchodilator EffectEffect
• Which bronchodilator?Which bronchodilator?
• What dose?What dose?
• How big an effect?How big an effect?
• FEVFEV11 increases by > 400ml increases by > 400ml
• No response: inconclusiveNo response: inconclusive
• Trial of prednisolone?Trial of prednisolone?
• Which bronchodilator?Which bronchodilator?
• What dose?What dose?
• How big an effect?How big an effect?
• FEVFEV11 increases by > 400ml increases by > 400ml
• No response: inconclusiveNo response: inconclusive
• Trial of prednisolone?Trial of prednisolone?
Breathless PatientBreathless Patient
If it’s not COPDIf it’s not COPD
or asthma,or asthma,- could it becould it be
bronchiectasis?bronchiectasis?
If it’s not COPDIf it’s not COPD
or asthma,or asthma,- could it becould it be
bronchiectasis?bronchiectasis?
BronchiectasisBronchiectasis
• pneumonia, whooping cough• in fewer than 50%
• pneumonia, whooping cough• in fewer than 50%
• chronic sputum production• breathlessness, wheeze• crackles in chest• dilated, thickened bronchi
Sputum ProductionSputum Production
I amI amdisgustidisgusti
ngng
Physical SignsPhysical Signs
Crackles in Crackles in affected areasaffected areasCrackles in Crackles in
affected areasaffected areas
BronchiectasisBronchiectasis
COPD and Something Else?
• complication of COPD
• complication of COPD
• other disease from smoking• related to treatment
• something quite different
Left-sided pneumothoraxLeft-sided pneumothorax
Lung cancerLung cancer
Compression of central airways
Compression of central airways
Pleural EffusionPleural Effusion
Right-sided effusion
Right-sided effusion
Heart failureHeart failure
This is #>}$@*
hard work!
Aspirin and Aspirin and AnaemiaAnaemia
Clot blockingpulmonary
artery
Clot blockingpulmonary
artery
ConclusionConclusion
• Is it COPD?• If so, what is the cause?• Is there anything else?• Spirometry essential
• confirm airflow obstruction• measure the severity• compare with previous
Consolation from Consolation from ConfuciusConfucius
The biggest The biggest fool can ask fool can ask
more than the more than the wisest man can wisest man can
answeranswer
The EndThe End