Bronchiectasis in children is an irreversible dilation of the airways caused by destructive changes to the airway walls. It has many causes including cystic fibrosis, infections, immunodeficiencies, and anatomical defects. The pathology involves a vicious cycle of impaired mucus clearance leading to recurrent infections, inflammation, and further airway damage. Symptoms include cough, sputum production, and breathing difficulties. Diagnosis is made through imaging like HRCT that shows changes to airway contours. Treatment focuses on airway clearance techniques and controlling infections with antibiotics. Management of underlying conditions and lung transplantation may be needed in severe cases.
Bronchiectasis
A condition characterized by chronic permanent dilation & destruction of bronchi due to destructive changes in the elastic and muscular layers of bronchial walls.
The common thread in the pathogenesis of bronchiectasis consists of difficulty clearing secretions & recurrent infections with a “vicious circle” of infection and inflammation resulting in airway injury and remodelling.
PLEASE REFER TO REFERENCE TEXTBOOKS FOR CLARITY.
Bronchiectasis is a chronic, irreversible dilation of the bronchi and bronchioles. Or •Bronchiectasis is characterized by permanent, abnormal dilation of one or more large bronchBronchiectasis.
Bronchiectasis
A condition characterized by chronic permanent dilation & destruction of bronchi due to destructive changes in the elastic and muscular layers of bronchial walls.
The common thread in the pathogenesis of bronchiectasis consists of difficulty clearing secretions & recurrent infections with a “vicious circle” of infection and inflammation resulting in airway injury and remodelling.
PLEASE REFER TO REFERENCE TEXTBOOKS FOR CLARITY.
Bronchiectasis is a chronic, irreversible dilation of the bronchi and bronchioles. Or •Bronchiectasis is characterized by permanent, abnormal dilation of one or more large bronchBronchiectasis.
Pneumonia is an inflammatory condition of the lung affecting primarily the small air sacs known as alveoli. Typically symptoms include some combination of productive or dry cough, chest pain, fever, and trouble breathing. Severity is variable.
Pneumonia is usually caused by infection with viruses or bacteria and less commonly by other microorganisms, certain medications and conditions such as autoimmune diseases. Risk factors include cystic fibrosis, chronic obstructive pulmonary disease (COPD), asthma, diabetes, heart failure, a history of smoking, a poor ability to cough such as following a stroke, and a weak immune system. Diagnosis is often based on the symptoms and physical examination. Chest X-ray, blood tests, and culture of the sputum may help confirm the diagnosis. The disease may be classified by where it was acquired with community, hospital, or health care associated pneumonia.
Vaccines to prevent certain types of pneumonia are available. Other methods of prevention include handwashing and not smoking. Treatment depends on the underlying cause. Pneumonia believed to be due to bacteria is treated with antibiotics. If the pneumonia is severe, the affected person is generally hospitalized. Oxygen therapy may be used if oxygen levels are low.
Pneumonia affects approximately 450 million people globally (7% of the population) and results in about four million deaths per year. Pneumonia was regarded by William Osler in the 19th century as "the captain of the men of death". With the introduction of antibiotics and vaccines in the 20th century, survival improved. Nevertheless, in developing countries, and among the very old, the very young, and the chronically ill, pneumonia remains a leading cause of death. Pneumonia often shortens suffering among those already close to death and has thus been called "the old man's friend"
Bronchitis is an inflammation of the bronchial tubes, the airways that carry air to your lungs. It causes a cough that often brings up mucus. It can also cause shortness of breath, wheezing, a low fever, and chest tightness. There are two main types of bronchitis: acute and chronic
These lecture notes were prepared by Dr. Hamdi Turkey- Pulmonologist- Department of internal medicine - Taiz university
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Pneumonia is an inflammatory condition of the lung affecting primarily the small air sacs known as alveoli. Typically symptoms include some combination of productive or dry cough, chest pain, fever, and trouble breathing. Severity is variable.
Pneumonia is usually caused by infection with viruses or bacteria and less commonly by other microorganisms, certain medications and conditions such as autoimmune diseases. Risk factors include cystic fibrosis, chronic obstructive pulmonary disease (COPD), asthma, diabetes, heart failure, a history of smoking, a poor ability to cough such as following a stroke, and a weak immune system. Diagnosis is often based on the symptoms and physical examination. Chest X-ray, blood tests, and culture of the sputum may help confirm the diagnosis. The disease may be classified by where it was acquired with community, hospital, or health care associated pneumonia.
Vaccines to prevent certain types of pneumonia are available. Other methods of prevention include handwashing and not smoking. Treatment depends on the underlying cause. Pneumonia believed to be due to bacteria is treated with antibiotics. If the pneumonia is severe, the affected person is generally hospitalized. Oxygen therapy may be used if oxygen levels are low.
Pneumonia affects approximately 450 million people globally (7% of the population) and results in about four million deaths per year. Pneumonia was regarded by William Osler in the 19th century as "the captain of the men of death". With the introduction of antibiotics and vaccines in the 20th century, survival improved. Nevertheless, in developing countries, and among the very old, the very young, and the chronically ill, pneumonia remains a leading cause of death. Pneumonia often shortens suffering among those already close to death and has thus been called "the old man's friend"
Bronchitis is an inflammation of the bronchial tubes, the airways that carry air to your lungs. It causes a cough that often brings up mucus. It can also cause shortness of breath, wheezing, a low fever, and chest tightness. There are two main types of bronchitis: acute and chronic
These lecture notes were prepared by Dr. Hamdi Turkey- Pulmonologist- Department of internal medicine - Taiz university
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PNEUMONIA,
DEFINITION
Pneumonia is an infection of the pulmonary parenchyma.
To the pathologist, pneumonia is an infection of the alveoli ,distal airways, and interstitium of the lung that is manifested by increased weight of the lungs, replacement of normal lung’s sponginess by consolidation ,and alveoli filled with white blood cells ,red blood cells and fibrin .To the clinician, pneumonia is a constellation of symptoms and signs in combination with at least one opacity on CXR.
Epidemiology
Between 5 and 10 million cases of infectious pneumonia occur annually in the United States and result in more than 1 million hospitalizations.
Pneumonia is a leading cause of death worldwide, the sixth leading cause of death in the United States, and the most common lethal infectious disease.
Bronchiectasis is a disease in which there is permanent enlargement of parts of the airways of the lung.[5] Symptoms typically include a chronic cough with mucus production.[3] Other symptoms include shortness of breath, coughing up blood, and chest pain.[2] Wheezing and nail clubbing may also occur.[2] Those with the disease often get frequent lung infections.[8]
Bronchiectasis may result from a number of infectious and acquired causes, including pneumonia, tuberculosis, immune system problems, as well as the genetic disorder cystic fibrosis.[11][3][12] Cystic fibrosis eventually results in severe bronchiectasis in nearly all cases.[13] The cause in 10–50% of those without cystic fibrosis is unknown.[3] The mechanism of disease is breakdown of the airways due to an excessive inflammatory response.[3] Involved airways (bronchi) become enlarged and thus less able to clear secretions.[3] These secretions increase the amount of bacteria in the lungs, resulting in airway blockage and further breakdown of the airways.[3] It is classified as an obstructive lung disease, along with chronic obstructive pulmonary disease and asthma.[14] The diagnosis is suspected based on symptoms and confirmed using computed tomography.[7] Cultures of the mucus produced may be useful to determine treatment in those who have acute worsening and at least once a year
Bronchiectasis refers to the congenital/acquired irreversible airway dilation that involves the bronchi/bronchioles in either a focal or a diffuse manner.
It is a pulmonary disease related to chronic infections in the background of inability of respiratory mucosa to clear the infections and impaired ciliary function.
It is chronic disease with high morbidity and mortality
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
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
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
Basavarajeeyam is an important text for ayurvedic physician belonging to andhra pradehs. It is a popular compendium in various parts of our country as well as in andhra pradesh. The content of the text was presented in sanskrit and telugu language (Bilingual). One of the most famous book in ayurvedic pharmaceutics and therapeutics. This book contains 25 chapters called as prakaranas. Many rasaoushadis were explained, pioneer of dhatu druti, nadi pareeksha, mutra pareeksha etc. Belongs to the period of 15-16 century. New diseases like upadamsha, phiranga rogas are explained.
Adv. biopharm. APPLICATION OF PHARMACOKINETICS : TARGETED DRUG DELIVERY SYSTEMSAkankshaAshtankar
MIP 201T & MPH 202T
ADVANCED BIOPHARMACEUTICS & PHARMACOKINETICS : UNIT 5
APPLICATION OF PHARMACOKINETICS : TARGETED DRUG DELIVERY SYSTEMS By - AKANKSHA ASHTANKAR
- Video recording of this lecture in English language: https://youtu.be/lK81BzxMqdo
- Video recording of this lecture in Arabic language: https://youtu.be/Ve4P0COk9OI
- Link to download the book free: https://nephrotube.blogspot.com/p/nephrotube-nephrology-books.html
- Link to NephroTube website: www.NephroTube.com
- Link to NephroTube social media accounts: https://nephrotube.blogspot.com/p/join-nephrotube-on-social-media.html
CDSCO and Phamacovigilance {Regulatory body in India}NEHA GUPTA
The Central Drugs Standard Control Organization (CDSCO) is India's national regulatory body for pharmaceuticals and medical devices. Operating under the Directorate General of Health Services, Ministry of Health & Family Welfare, Government of India, the CDSCO is responsible for approving new drugs, conducting clinical trials, setting standards for drugs, controlling the quality of imported drugs, and coordinating the activities of State Drug Control Organizations by providing expert advice.
Pharmacovigilance, on the other hand, is the science and activities related to the detection, assessment, understanding, and prevention of adverse effects or any other drug-related problems. The primary aim of pharmacovigilance is to ensure the safety and efficacy of medicines, thereby protecting public health.
In India, pharmacovigilance activities are monitored by the Pharmacovigilance Programme of India (PvPI), which works closely with CDSCO to collect, analyze, and act upon data regarding adverse drug reactions (ADRs). Together, they play a critical role in ensuring that the benefits of drugs outweigh their risks, maintaining high standards of patient safety, and promoting the rational use of medicines.
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1. Bronchiectasis in Children
Dr. Virendra Kumar Gupta
Assiociate Professor
Department Of Pediatrics
NIMS Medical College & Hospital , Jaipur
2. Definition…..
Chronic abnormal, permanent and
irreversible dilation of the medium
sized sub segmental bronchus
due to
destructive changes in the elastic
and muscular layers of bronchial
walls.
May be diffuse or localized
resulting in
impairment of the drainage
of bronchial secretions.
3.
4.
5. Etiology
Congenital
• Cystic Fibrosis (Most common cause)
• Primary hypogammaglobinemia leading to recurrent
infection
• Ciliary dysfunction syndrome
Acquired (In children)
• Secondary to pneumonia which occurs often as
complication of whooping cough and measles
9. 8.Immunodeficiency state
IgG subclass deficiency, X-linked,
agammaglobulinemia, selective IgA, IgM, or IgE
deficiency, bare lymphocyte syndrome, chronic
granulomatous disease, Nezelof syndrome (Thymic
dysplasia with normal immunoglobulins)
9.Hereditaryabnormality
Dyskinetic cilia syndrome,
Kartagener’s syndrome (situs inversus,
nasal polyposis and bronchiectasis)
α 1-antitrypsin deficiency
cystic fibrosis, ADPKDK
10. Pathogenesis
The common thread in the pathogenesis of
bronchiectasis
consists of difficulty clearing secretions & recurrent
infections with a
“vicious circle”
of infection and inflammation
resulting in airway injury and remodelling.
11. Pathogenesis of Bronchiectasis: The Vicious Cycle
Destruction
of mucociliary and
cartilagenous supporing
structures
Release
of inflammatory cytokines
peroxidases, proteinases
elastase, etc.
Colonization
and biofilm formation
intermittent dispersals
Infection
with acute inflammation
and recruitment of
inflmmatory cells
Impairment
mucociliary clearance
sputum retention
Loss
of ventilatory
function
12.
13. 3 mechanisms:
1.Obstruction- can occur because of tumour, foreign
body, impacted mucus due to poor muco-ciliary
clearance, external compression, bronchial webs, and
atresia.
2.Infections d/t Bordetella pertusis, measles, rubella,
adenovirus, and mycobacterium tuberculosis induce
chronic inflammation.
14. 3. Chronic inflammation contributes to the mechanism
by which obstruction leads to bronchiectasis.
• Inflammatory mediators such as neutrophil elastase,
interleukin-6, interleukin-8, and Tumor necrosis factor-
α (TNF-α) have been found to be elevated in the
airways of patients with bronchiectasis
15. Pathological forms of Bronchiectasis
• Cylindrical bronchiectasis- bronchial outlines are
regular, but there’s diffuse dilatation of the bronchial
unit. Bronchial lumen ends abruptly because of mucous
plugging.
• Tramline appearance on CT scan.
• Varicose bronchiectasis- degree of dilatation is greater,
local constrictions cause irregularity of outline
resembling that of varicose veins.
• Beaded contour on CT scan.
16. Cont..
• Saccular (Cystic) bronchiectasis- bronchial dilatation
progresses and results in ballooning of bronchi that
end in fluid or mucous filled sacs.
• Most severe form of Bronchiectasis.
• Prebronchiectasis- chronic or recurrent
endobronchial infection with non specific HRCT
changes – may be reversible.
20. • Poor general condition
• Tachypnea
• Dyspnea - Use of accesory muscle of respiration
• Clubbing
• BS – harsh with prolonged expiration
• Coarse leathery crackles
• wheeze
21. Diagnosis
• Thin-section HRCT scanning- Gold standard
excellent sensitivity and specificity
• CT - Disease location, presence of mediastinal lesions, and
the extent of segmental involvement.
• Chest X-ray- increase in size and loss of bronchovascular
markings, crowding of bronchi, and loss of lung volume.
Severe case: Honeycombing
• Sputum culture
• Bronchoscopy
28. Treatment
• Aims at decreasing airway obstruction and controlling infection.
• Postural drainage and control Infection.
• 2 to 4 wk of parenteral antibiotics is often necessary to manage acute
exacerbations adequately.
• Amoxicillin/ Clavulanic acid (22.5mg/kg/dose twice daily) has been
successful at treating the exacerbations.
• Long-term prophylactic oral (macrolide) or nebulized antibiotics (e.g.,
tobramycin, colistin, aztreonam) may be beneficial.
• Airway hydration (inhaled hypertonic saline or mannitol) also improves
quality of life in adults with bronchiectasis.
• Any underlying disorder (immunodeficiency, aspiration) that may be
contributing must be addressed.
29. Supportive Treatment
Cessation of smoking
Avoidance of second-handsmoking
Adequate nutritional intake
Immunizations for influenza andpneumococcal
pneumonia
Conformation of immunizations for measles,rubella
and pertusis
Oxygen therapy is reserved for patients with
hypoxemiaand end stagecomplicationssuch as cor-
pulmonale
51. • CONTRA INDICATIONS TO CHEST PT:
• Unstabilized head and/or neck injury
• Active hemorrhage with hemodynamic instability or
significant possibility of occurrence.
• Osteogenesis imperfecta or other bone disease associated
with brittle or extremely fragile bones/ Fracture of ribs
• OTHER CONTRA INDICATIONS:
• Intracranial pressure > 20 mm Hg
• Active hemoptysis
• Acute spinal injury/ Spine surgery
• Pulmonary embolism
• Worsening bronchospasm etc
52. Helpful in advanced or complicateddisease.
Indications :
1. Patientswho have focal disease that is poorly
controlled by anti-biotics.
2.Reduction of acute infectiveepisodes
3. Massive haemoptysis(Alternatively bronchial artery
embolization may beattempted)
4. Foreign body or tumorremoval
5. Consideration in the treatment of MACor
Aspergillus specific infections
Surgical resection
53. Lung transplantation
Single or double lung transplantation for severe
bronchiectasis, predominantly related to CF. FEV1 < 30
and in youngerpatients it may beconsidered.
55. Bronchiectasis: Summary
Abnormal irreversibly dilated and often thick-walled bronchi
Pathogenesis related to one or more defects of mucociliary
clearance, cellular and immunity defense mechanism or
presence of associated conditions
“The vicious cycle” and P aeruginosa contributes progression
and severity of disease
Imaging greatly helps in diagnosis: Tram line, honeycombing,
cystic, signet ring sign
Additional test may be required in specific clinical settings
Microbiology of the diseased airway may aid proper
antimicrobial therapy
56. THANK YOU
Dr. Virendra Kumar Gupta
Assiociate Professor
Department Of Pediatrics
NIMS Medical College & Hospital , Jaipur