This document provides an overview of bronchial asthma, including its definition, pathophysiology, types, triggers, symptoms, diagnosis, management, and differences from COPD. Key points include:
- Asthma is a disease characterized by reversible airway obstruction and inflammation in response to various stimuli. It is an IgE-mediated hypersensitivity reaction.
- Common symptoms include wheezing, chest tightness, cough and breathlessness. Diagnosis is based on clinical history and pulmonary function tests showing improved airflow with bronchodilators.
- Management involves avoidance of triggers, bronchodilators, inhaled corticosteroids, and a stepped treatment plan escalating medications based on asthma control. Acute
Bronchial Asthma: Definition,Pathophysiology and ManagementMarko Makram
Definition and Pathophysiology of Asthma in addition to classification and recent updates in the management of asthma based on GINA-2019 Guidelines, by Dr. Marco Makram.
Bronchial Asthma: Definition,Pathophysiology and ManagementMarko Makram
Definition and Pathophysiology of Asthma in addition to classification and recent updates in the management of asthma based on GINA-2019 Guidelines, by Dr. Marco Makram.
BRONCHIAL ASTHMA
ntroduction
Definition
Etiological factors
Pathophysiology
Types of asthma
Clinical manifestation Restlessness Wheezing or crackles Absent or diminished lung sounds Hyper resonance Use of accessory muscles for breathing Tachypnea with hyperventilation
Clinical manifestation
Diagnostic evaluation
Bronchoprovocation Testing: Testing that is done to identify inhaled allergens; mucous membranes are directly exposed to suspected allergen in increasing amounts. Skin Testing: Done to identify specific allergens. Exercise Challenges: Exercise is used to identify the occurrence of exercise-induced bronchospasm. Radio allergosorbent Test: Blood test used to identify a specific allergen. Chest Radiograph: May show hyper expansion of the airways.
Managemnet
Goal- Promote bronchodilationn Reduce inflammation Remove secretions Prevent ongoing symptoms Prevent asthma attack Maintain normal lung function Avoid triggers
Pharmacological therapy 1. Long term control medication- Inhaled corticosteroid Leukotriene modifiers Long acting beta agonist Methylxanthines Combine inhaler
2 Quick relief medication Short acting beta agonist Anticholinergic Oral or I/V corticosteroid
3 Bronchial thermoplasty- Form severe asthma that does not respond to medication
Non- pharmacological
Oxygen therapy Postural drainage & chest physiotherapy Coughing & deep breathing exercise Avoidance of allergen relaxation technique acupuncture
Prevention
Patients with recurrent asthma should undergo tests to identify the substances that precipitate the symptoms. Possible causes are dust, dust mites, roaches, certain types of cloth, pets, horses, detergents, soaps, certain foods, molds, and pol- lens. If the attacks are seasonal, pollens can be strongly sus- pected. Patients are instructed to avoid the causative agents whenever possible.
Complications Complications of asthma may include status asthmaticus, respiratory failure, pneumonia, and atelectasis. Airway obstruction, particularly during acute asthmatic episodes, often results in hypoxemia, requiring the administration of oxygen and the monitoring of pulse oximetry and arterial blood gases. Fluids are administered, because people with asthma are frequently dehydrated from diaphoresis and in- sensible fluid loss with hyperventilation.
Nursing diagnosis
Impaired gas exchange r/t altered oxygen supply Ineffective airway clearance r/t bronchospasm & obstruction from narrow lumen Ineffective breathing pattern r/t bronchospasm Risk for increasing attack of r
espiratory distress r/t exposure to allergens
Chronic Obstructive Pulmonary Disease (COPD) is an umbrella term used to describe progressive lung diseases including emphysema, chronic bronchitis, and refractory (non-reversible) asthma. This disease is characterized by increasing breathlessness
Made by Ranjith R Thampi. A decent powerpoint on Bronchial Asthma, a short summary on various presentations and treatment options starting at Primary health level. Was made mainly for Primary Health setup. I've also added options at higher centres and also a few references for latest drug modalities and use.
BRONCHIAL ASTHMA
ntroduction
Definition
Etiological factors
Pathophysiology
Types of asthma
Clinical manifestation Restlessness Wheezing or crackles Absent or diminished lung sounds Hyper resonance Use of accessory muscles for breathing Tachypnea with hyperventilation
Clinical manifestation
Diagnostic evaluation
Bronchoprovocation Testing: Testing that is done to identify inhaled allergens; mucous membranes are directly exposed to suspected allergen in increasing amounts. Skin Testing: Done to identify specific allergens. Exercise Challenges: Exercise is used to identify the occurrence of exercise-induced bronchospasm. Radio allergosorbent Test: Blood test used to identify a specific allergen. Chest Radiograph: May show hyper expansion of the airways.
Managemnet
Goal- Promote bronchodilationn Reduce inflammation Remove secretions Prevent ongoing symptoms Prevent asthma attack Maintain normal lung function Avoid triggers
Pharmacological therapy 1. Long term control medication- Inhaled corticosteroid Leukotriene modifiers Long acting beta agonist Methylxanthines Combine inhaler
2 Quick relief medication Short acting beta agonist Anticholinergic Oral or I/V corticosteroid
3 Bronchial thermoplasty- Form severe asthma that does not respond to medication
Non- pharmacological
Oxygen therapy Postural drainage & chest physiotherapy Coughing & deep breathing exercise Avoidance of allergen relaxation technique acupuncture
Prevention
Patients with recurrent asthma should undergo tests to identify the substances that precipitate the symptoms. Possible causes are dust, dust mites, roaches, certain types of cloth, pets, horses, detergents, soaps, certain foods, molds, and pol- lens. If the attacks are seasonal, pollens can be strongly sus- pected. Patients are instructed to avoid the causative agents whenever possible.
Complications Complications of asthma may include status asthmaticus, respiratory failure, pneumonia, and atelectasis. Airway obstruction, particularly during acute asthmatic episodes, often results in hypoxemia, requiring the administration of oxygen and the monitoring of pulse oximetry and arterial blood gases. Fluids are administered, because people with asthma are frequently dehydrated from diaphoresis and in- sensible fluid loss with hyperventilation.
Nursing diagnosis
Impaired gas exchange r/t altered oxygen supply Ineffective airway clearance r/t bronchospasm & obstruction from narrow lumen Ineffective breathing pattern r/t bronchospasm Risk for increasing attack of r
espiratory distress r/t exposure to allergens
Chronic Obstructive Pulmonary Disease (COPD) is an umbrella term used to describe progressive lung diseases including emphysema, chronic bronchitis, and refractory (non-reversible) asthma. This disease is characterized by increasing breathlessness
Made by Ranjith R Thampi. A decent powerpoint on Bronchial Asthma, a short summary on various presentations and treatment options starting at Primary health level. Was made mainly for Primary Health setup. I've also added options at higher centres and also a few references for latest drug modalities and use.
These lecture notes were prepared by Dr. Hamdi Turkey- Pulmonologist- Department of internal medicine - Taiz university
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Asthma is a chronic inflammatory condition associated with airway hyperresponsiveness (an exaggerated airway-narrowing response to specific triggers such as viruses, allergens and exercise).
Physiotherapy can provide relief from symptoms of uncontrolled asthma, including coughing, wheezing, tightness in the chest, shortness of breath and QOL.
I am professionally pharmacist. These slides for pharmacy department students based on clinical subject. Very helpful for students who get more benefits.
Presentation on Treatment of Bronchial Asthma | Jindal Chest ClinicJindal Chest Clinic
Bronchial asthma is a lung disease characterized by inflammation, narrowing, swelling of airways, and increased mucus production, making it difficult to breathe. This Presentation gives an overview on "Treatment of Bronchial Asthma" including management, diagnosis, symptoms, Complications, etc. For more information, please contact us: 9779030507.
These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
MANAGEMENT OF ATRIOVENTRICULAR CONDUCTION BLOCK.pdfJim Jacob Roy
Cardiac conduction defects can occur due to various causes.
Atrioventricular conduction blocks ( AV blocks ) are classified into 3 types.
This document describes the acute management of AV block.
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Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
2. DEFINITION
Asthma is a disease of the airways
characterized by an increased
responsiveness of the tracheobronchial tree
to many different stimuli, resulting in
episodes of reversible airway obstruction.
It is IgE mediated type-I hypersensitivity
reaction.
3. SO, WHAT HAPPENS IN ASTHMA?
Airflow limitation
Airway hyper-reactivity
Airway inflammation
4. TYPES OF ASTHMA
Extrinsic asthma: when a difinite external
cause can be identified.
Intrinsic asthma: when a difinite external
cause can not be identified.
5. WHAT ARE THE TRIGGERING FACTORS?
Allergens (e.g. house dust mites and animal dander).
Drugs (e.g. beta-blockers and non-steroidal anti-
inflammatory drugs).
Environmental (e.g. climatic conditions and air
pollution).
Occupations (e.g. exposure to industrial chemicals,
drugs, metals, dusts).
Infections (e.g. viral and bacterial).
Exercise.
Emotion.
Cigarette smoke.
6. WHAT POSITIVE HISTORY YOU EXPECT?
Age of onset of breathlessness is usually
childhood.
Diurnal variation of breathlessness(Usually
worsens at late night & early morning).
Awakening short of breath.
Precipitating factors.
Occupational history.
Relieved by bronchodilators.
History of allergy.
Family history.
7. SYMPTOMS & SIGNS
Typical symptoms include recurrent episodes of
Wheezing
Chest tightness,
Breathlessness
Cough.
Signs are
Signs of respiratory distress( Tachypnea, use of
accessory respiratory muscles)
Cyanosis
Auscultation of chest reveals ronchi throughout the
chest, more prominent during expiration
8. COUGH-VARIANT ASTHMA(CVA)
Cough may be the dominant symptom in
some patients, and the lack of wheeze or
breathlessness may lead to a delay in
reaching the diagnosis of so-called cough-
variant asthma(CVA).
9. DIAGNOSIS
The diagnosis of asthma is predominantly clinical
and based on a characteristic history.
Pulmonary function test:
i) spirometry to measure FEV1 and VC.
ii) If spirometry is not available, a peak flow
meter may be used. Patients should be
instructed to record peak flow readings after
rising in the morning and before retiring in the
evening. A diurnal variation in PEF of more than
20% (the lowest values typically being recorded
in the morning) is considered diagnostic.
10. Measurement of allergic status:
Skin prick tests.
Measurement of total and allergen-specific IgE.
A full blood picture may show the peripheral
blood eosinophilia.
Radiological examination:
Chest X-ray appearances are often normal or
show hyperinflation of lung fields.
Sputum for eosinophil count.
11. HOW TO MAKE A DIAGNOSIS OF ASTHMA
Compatible clinical history plus either/or :
• FEV1 ≥ 15% (and 200 mL) increase following
administration of a bronchodilator/trial of
corticosteroids
• > 20% diurnal variation on ≥ 3 days in a week
for 2 weeks on PEF diary
• FEV1 ≥ 15% decrease after 6 mins of
exercise
13. WHY NOT COPD?
In COPD(chronic bronchitis), there is
presence of cough with sputum production,
on most of the days for at least 3 consecutive
months in a year for at least 2 successive
years.
May no history of smoking.
May be children
May have famiy history.
14. MANAGEMENT OF ASTHMA
Avoidance of further exposure to aggrevating
factors.
Using mask at work.
If no response, step care asthma
management plan.
15. The therapeutic targets of medications used for
asthma include:
Drugs that inhibit smooth muscle contraction
(e.g. beta-2-agonists, anticholinergic and
methylxanthines such as theophylline).
Drugs that prevent or reverse airway
inflammation (e.g. corticosteroids and mast cell
stabilizing agents).
Drugs that modify the action of leukotriene's
(e.g. leukotriene antagonists or 5-lipoxygenase
inhibitors).
16. STEPPED CARE PLAN FOR THE MANAGEMENT
OF CHRONIC ASTHMA
1. Mild intermittent asthma:
Inhaled short-acting beta-2-agonist as required
2. Regular preventer therapy:
Start inhaled steroid regularly 200–800 mg/day (e.g.
beclometasone, budesonide or fluticasone)
3. Initial add-on therapy:
Add long-acting beta-2-agonist (LABA) regularly
Increase dose of regular inhaled steroid
Add third medication, theophylline or leukotriene
receptor antagonist
Slow-release beta-2-agonist tablets may also help.
17. 4. Persistent poor control:
Trial of high dose of regular inhaled steroid
Addition of medications not used in step 3
5. Oral steroid:
Add lowest dose of oral steroid to achieve
control of symptoms
Continue maximum dose inhaled steroid
Must be under care of a respiratory physician
18. Treatment is started at the step most
appropriate to initial severity, and a ‘rescue’
course of prednisolone can be given at any
time and with any step to cover an
exacerbation. Move up the ladder if relief
bronchodilators are needed frequently or
night-time symptoms occur. Check
compliance and inhaler technique, and
consider the use of spacer devices. (After
British Thoracic Society.)
19. LEVELS OF ASTHMA CONTROL
Characteristics Controlled Partly controlled
(any present
in any week)
Uncontrolled
Daytime symptoms None ( twice/wk) > twice/wk
3 features of partly
controlled
asthma present in
any wk
Limitations of activity None Any
Nocturnal symptoms/
awakening
None Any
Need for rescue/
‘reliever’ treatment
None ( twice/wk) > twice/wk
Lung
function(PEF/FEV1)
Normal < 80% predicted or
personal
best (if known) on
any day
Exacerbation None 1/yr 1 in any week
20. HOW TO USE A METERED-DOSE INHALER
Remove the cap and shake the inhaler
Breathe out gently and place the mouthpiece
into the mouth
Incline the head backwards to minimise
oropharyngeal deposition
Simultaneously, begin a slow deep
inspiration, depress the canister and
continue to inhale
Hold the breath for 10 seconds
21. IMMEDIATE ASSESSMENT OF ACUTE
SEVERE ASTHMA
Acute severe asthma/ status asthmaticus
• PEF 33–50% predicted (< 200 L/min)
• Respiratory rate ≥ 25 breaths/min
• Heart rate ≥ 110 beats/min
• Inability to complete sentences in 1 breath
22. Life-threatening features
• PEF < 33% predicted(< 100 L/min)
• SpO2 < 92% or PaO2< 8 kPa (60 mmHg)(especially if
being treated with oxygen)
• Normal or raised PaCO2
• Silent chest
• Cyanosis
• Feeble respiratory effort
• Bradycardia or arrhythmias
• Hypotension
• Exhaustion
• Confusion
• Coma
24. INDICATIONS FOR ASSISTED VENTILATION IN
ACUTE SEVERE ASTHMA
Coma
Respiratory arrest
Deterioration of arterial blood gas tensions
despite optimal therapy
PaO2 < 8 kPa (60 mmHg) and falling
PaCO2 > 6 kPa (45 mmHg) and rising
pH low and falling (H+ high and rising)
Exhaustion, confusion, drowsiness
25. HOW TO MANAGE ACUTE SEVERE CASES?
High concentration oxygen – aim for saturations above
92%
Frequent nebulized salbutamol (5 mg) with ipratropium
bromide (0.5 mg q.d.s.) if severe attack. Use oxygen-
driven nebulizers if possible.
Systemic corticosteroids (hydrocortisone 200 mg IV 4
hourly. After 24 hours prednisolone 60 mg daily for 2
weeks orally.)
If no response IV infusion salbutamol or terbutaline or
magnesium sulphate may be given.
Intravenous aminophylline may be given.
Correction of fluid & electrolytes.
If, no response shift to ICU.
26. WHEN WILL YOU DISCHARGE A PATIENT?
Prior to discharge, patients should be stable
on discharge medication (nebulised therapy
should have been discontinued for at least
24 hours)
The PEF should have reached 75% of
predicted or personal best.
27. DIFFERENCE BETWEEN ASTHMA & COPD
Traits Bronchial asthma COPD
Age incidence Child & younger Old age(>50 years)
Main symptom Respiratory distress Cough & sputum
Diurnal variation Occurs Not occurs
History of allergy Present Usually Absent
Smoking history Not so important Important
Chest Xray Usually normal Abnormal
Eosinophil count Increase Normal
IgE level Raised Normal