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BRONCHIAL ASTHMA

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BRONCHIAL ASTHMA Introduction to Primary Care: a course of the Center of Post Graduate Studies in FM PO Box 27121 Riyadh 11417 Tel: 4912326 Fax: 4970847 – PowerPoint PPT presentation

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Title: BRONCHIAL ASTHMA


1
BRONCHIAL ASTHMA
Introduction to Primary Care a course of the
Center of Post Graduate Studies in FM
PO Box 27121 Riyadh 11417 Tel 4912326 Fax
4970847
1
2
Objectives
  • To describe how to make the diagnosis of asthma
    utilizing the Saudi Asthma Guidelines.
  • To discuss the efficacy of nebulizers versus
    metered dose inhalers and other medications in
    the treatment of asthma
  • To describe the following methods for monitoring
    disease severity and any evidence supporting one
    method over the other
  • Symptoms based (i.e. medication frequency and
    dose based upon symptoms)
  • Daily peak flow meter monitoring (i.e. red,
    yellow, green zones)

3
DEFINITION OF ASTHMA
  • CHRONIC INFLAMATORY DISORDER OF THE AIRWAY
    ASSOCIATED WITH WIDESPREAD BUT VARIABLE AIRFLOW
    LIMITATION (PARTLY REVERSIBLE WITH OR WITHOUT
    TREATMENT )
  • AND WITH INCREASED AIRWAY HYPERRESPONSIVENESS TO
    VARIETY OF STIMULI

4
WHAT IS THE PREVALENCE IN SAUDI ARABIA ?

5
The prevalence of asthma among school children in
KSA
  • Range
  • 4-23
  • Riyadh
  • 10
  • Jeddah
  • 12

( AL Frayh, et al, 2001 )
6
Diagnosis
7
history
  • Required a full detailed medical history and
    clinical exam. Including peak expiratory flow
    (PEF)rate.
  • 1-Symptoms
  • Cough
  • Wheezing
  • Shortness of breath

8
  • How frequent, how severe, what intervention
    needed.
  • Interfere with sport or normal physical activity
  • Trouble some cough between attacks
  • Symptoms improve by asthma medication

9
  • 2- atopy skin eczema ,itchy eye,frequent nasal
    blockage,discharge or sneezing especialy in the
    morning
  • 3- family history of atopic diseases.
  • 4- environmental history
  • 5- exclusion of other medical conditions

10
Physical examination
  • Hight and weight(growth in childern)
  • Nose,throat, sinusis(polyps,deviated nasal
    septum,post nasal drip,pale-pink or congested
    nasal turbinate.
  • Feature of atopy
  • Examination of the respiratory system
  • May be normal between attacks
  • wheeze brochi,tachypnea,chest deformity suggest
    asthma
  • Stridor,clubbing,heart murmers ----other than
    bronchial astha

11
  • Peak expiratory flow rate (PEF)
  • Should be performed in every patientgt5 yrs
  • In certain patient measuring PEF prior to and
    after a bronchodilator may help in confirming the
    diagnosis.
  • Measuring PEF variability comparing the morning
    and evening PEF over a period of 2 weeks

12
  • Variability over 15 conferms but not essential
    for diagnosis
  • PEF may be normal between attacks

13
Investigation
  • Usually not necessary
  • CXR Usually not necessary except in
  • Severe cases
  • Foreign body
  • Infection
  • Arterial blood gases in severe cases

14
Differential diagnosis
  • In children lt 5 yrs
  • Upper airway allergies,rhinitis, sinusitis
  • GERD
  • Foreign body aspiration
  • Recurrent viral LRTI
  • Cystic fibrosis
  • Congenital heart disease

15
Differential diagnosis
  • In older children and adults
  • Upper airway allergies, rhinitis, sinusitis
  • GERD
  • Heart disease
  • COPD
  • Vocal cord dysfunction
  • Inhalation of foreign body
  • Hyperventilation and panic attack
  • Cough secondary to drugs(ß-blockers and ACE
    inhibtors)
  • Bronchiachtiasis
  • Laryngeal dysfunction

16
classification
17
classification
  • Etiology
  • Allergic and non allergic asthma
  • Help in determining prognosis and in determining
    allergen to be avoided
  • Severity
  • Intermittent, mild persistent, moderate
    persistent, severe persistent.
  • Management at the initial assessment of a patient
  • Control
  • Useful for ongoing therapy

18
Classification asthma Severity
classification intermittent Mild persistent Moderate persistent Severe persistent
Minor symptoms lt1/week 1-3/week 4-5/week continuous
Exacerbations/nocturnal lt1/month 1/month 2-3/month gt4/month
PEF between attacks gt80 gt80 60-80 lt60
Pharmacological therapy step1 step2 step3 step4
19
Classification asthma control
charachtarstic controlled(all the following) Partly controlled (any in any week) uncontrolled
Day time symptoms None(twice or less/week) More than twice/week Three or more Feature of partly controlled asthma present in any week
Limitation of activity None Any Three or more Feature of partly controlled asthma present in any week
Nocturnal symptoms /awaking None Any Three or more Feature of partly controlled asthma present in any week
Need for reliever /rescue treatment None (twice or less/week) More than twice/week Three or more Feature of partly controlled asthma present in any week
Lung function (PEF or FEV1) Normal lt80 predicted or Personal best Three or more Feature of partly controlled asthma present in any week
20
Management
21
Goals of successful management
  • Achieve and maintain control of symptoms
  • Maintain normal activity level ,including
    exercise
  • Maintain (near) "normal" pulmonary function.
  • Prevent recurrent exacerbations of asthma
  • Avoid adverse effects from asthma medication
  • Prevent asthma medication

22
Component of asthma therapy
  • Develop patient /doctor partenership asthma
    education
  • Identify and reduce exposure to risk factors
  • Assess treat and monitor asthma
  • Manage asthma exacerbation emergencies
  • Special consideration coexisting and related
    condition

23
Component 1Develop patient /doctor partnership
asthma education
  • Asthma education
  • Asthma follow up and referal

24
Component 1Develop patient /doctor partnership
asthma education
  • Asthma education
  • Objectives
  • 1- improving knowledge of asthma
  • 2-changing attitude and behavior
  • 3-Improving management skills
  • 4- improving satisfaction and overall quality of
    life

25
Component 1Develop patient /doctor partnership
asthma education
  • Elements of patient education
  • 1- basic facts about asthma
  • Disease, medication and goal of therapy
  • 2- socio-cultural misconception
  • Asthma as infectious disease,asthma medication
    are addictive,
  • 3- medication
  • Advantage of inhaled over systemic medications
  • The need for more than one inhaler

26
Component 1Develop patient /doctor partnership
asthma education
  • 4- management skills
  • Technique
  • Inhalation devices,spacer, PEF
  • Asthma self management
  • Name and dose of the medication
  • Monitoring of asthma
  • Sign suggest worsening of asthma
  • Action in exacerbation
  • How and when adjust medication
  • How and when to seek medical attention

27
Component 1Develop patient /doctor partnership
asthma education
  • Follow up
  • Initial phase
  • Last until asthma control is optimum
  • The diagnnosis is established
  • Patient need to be seen at least every 3-6 weeks
    during this phase

28
Component 1Develop patient /doctor partnership
asthma education
  • Second phase
  • The asthma is well controlled
  • Interval history, examination ,medication
  • Special attention include
  • 1-need for emergency care
  • 2-loss of time in work or school
  • 3-freq. of ß2 agonist usage
  • 4-wheezing interfere with normal physical
    activity

29
Component 1Develop patient /doctor partnership
asthma education
  • 5-use of oral steroid
  • 6-Perform spirometry or PEF in clinic
  • 7-go over PEF chart with the patient
  • 8- observe inhalation technique
  • 9- step up or down anti-inflammatory therapy
  • 10-provide written instruction to certain
    patients
  • Patient need to be seen every 3-6 months
  • Or earlier if patient deteriorate

30
Component 1Develop patient /doctor partnership
asthma education
  • Referral
  • Primary health care centers
  • Manage asthma whose diagnosis is striaght forward
    and are easily controlled
  • If asthma is partialy controlled or uncontrolled
    --?refer to secondary care

31
Component 2 Identify and reduce exposure to risk
factors
  • Domestic dust mites
  • Air pollution
  • Tobacco smoke
  • Occupational irritants
  • Cockroach
  • Animal with fur
  • Pollen

32
  • Respiratory (viral) infections
  • Chemical irritants
  • Strong emotional expressions
  • Drugs ( aspirin, beta blockers)

33
Component 3Assess treat and monitor asthma
  • asthma Severity
  • asthma control

34
Asthma control test
35
step1 step2 step3 step4 step4 step5
As needed rapid acting ß2 agonist As needed rapid acting ß2 agonist As needed rapid acting ß2 agonist As needed rapid acting ß2 agonist As needed rapid acting ß2 agonist As needed rapid acting ß2 agonist
Low dose ICS Low dose ICSLABA Medium to high dose ICS LABA Step 4 steriods Step 4 steriods
Leukotriene modifier Low dose ICS Leukotriene modifier Medium to high dose ICS Leukotriene modifier STEP 4anti IgE STEP 4anti IgE
Medium to high dose ICS Medium to high dose ICS LABA Leukotriene modifier
Addition of sustained release theophylline may be considered
36
LEVEL OF CONTROL TREATMENT OPTION
controlled Step down therapy
controlled Maintain therapy
Partly controlled Maintain therapy
Partly controlled Step up therapy
Uncontrolled Step up therapy
Uncontrolled Look up for reasons
37
Component 4Manage asthma exacerbation
emergencies
  • Home management
  • Frequent ß2 agonist preferaply via spacer device
    q 4h
  • Dose of ICS to be increased 4 folds
  • Action plan

38
Management of severe attack
39
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40
Peak Flow Meter Zones
  • Green Zone (80 to 100 percent of your personal
    best) signals good control. Take your usual daily
    long-term-control medicines, if you take any.
    Keep taking these medicines even when you are in
    the yellow or red zones.
  • Yellow Zone (50 to 79 percent of your personal
    best) signals
  • caution your asthma is getting worse. Add
    quick-relief medicines. You might need to
    increase other asthma medicines as directed by
    your doctor.
  • Red Zone (below 50 percent of your personal best)
    signals medical alert! Add or increase
    quick-relief medicines and call your doctor now.

41
Component 5special consideration
  • Rhinitis
  • Sinusitis
  • Nasal polyps
  • Respiratory infection
  • GERD
  • Asprin induced asthma(AIA)
  • Pregnancy
  • surgery

42
  • B. This patient has mild persistent asthma, which
    is defined as having asthma symptoms more than
    two times a week but less than one time a day.
    These patients also have nocturnal

43
  • Is the asthma of the patient in the previous
    question controlled or not? What recommendations
    might you give her regarding her therapy?
  • A. Controlled, do not change her therapy
  • B. Controlled, educate regarding triggers
  • C. Not controlled, give a short burst of oral
    prednisone
  • D. Not controlled, add a long-acting
    bronchodilator such as salmeterol
  • E. Not controlled, add a low-dose inhaled
    corticosteroid or leukotriene antagonist

44
  • E. This patient is not well controlled since she
    is using her inhaler more than twice a week and
    experiencing symptoms so frequently. Addition of
    a low-dose inhaled corticosteroid or a
    leukotriene antagonist are appropriate options
    for mild persistent asthma.

45
  • The same 23-year-old patient comes in to your
    office 2 months later after having a kitchen fire
    at home and is complaining of shortness of
    breath. What factor on your history and physical
    might make you consider admitting her to the
    hospital?
  • A. Wheezing on lung exam
  • B. Pulse oximetry less than 93
  • C. Respiratory rate of 30 breaths per minute
  • D. No response to one treatment with an albuterol
    nebulizer
  • E. PaCO2 of 25

46
  • C. A respiratory rate of greater than 28 or pulse
    of greater than 110 beats per minute would both
    indicate a severe episode. Wheezing is an
    unreliable indicator of the severity of attack. A
    pulse oximetry measurement of 90 is the goal
    unless the patient is pregnant or has cardiac
    disease. A PaCO2 of 25 is expected in a patient
    who is hyperventilating. A PaCO2 that is normal
    or elevated may be a sign of impending
    respiratory failure and such patients should be
    monitored closely in the intensive care unit

47
  • Thanks

47
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