The Mantoux test, also known as the tuberculin skin test, is used to determine if a person has been infected with tuberculosis. It involves injecting a small amount of purified protein derivative into the skin on the lower arm. After 48 to 72 hours, a health care worker measures any induration, or hard, raised area that develops on the arm, which can indicate infection. A positive result is based on the size of the induration and the person's risk factors. While very accurate, the test can sometimes produce false positives or negatives, requiring further evaluation and testing to diagnose active TB disease.
Typhoid fever, also known as enteric fever, is a potentially fatal multisystemic illness caused primarily by Salmonella enterica, subspecies enterica serovar typhi and, to a lesser extent, related serovars paratyphi A, B, and C.
The protean manifestations of typhoid fever make this disease a true diagnostic challenge. The classic presentation includes fever, malaise, diffuse abdominal pain, and constipation. Untreated, typhoid fever is a grueling illness that may progress to delirium, obtundation, intestinal hemorrhage, bowel perforation, and death within 1 month of onset. Survivors may be left with long-term or permanent neuropsychiatric complications.
Typhoid fever, also known as enteric fever, is a potentially fatal multisystemic illness caused primarily by Salmonella enterica, subspecies enterica serovar typhi and, to a lesser extent, related serovars paratyphi A, B, and C.
The protean manifestations of typhoid fever make this disease a true diagnostic challenge. The classic presentation includes fever, malaise, diffuse abdominal pain, and constipation. Untreated, typhoid fever is a grueling illness that may progress to delirium, obtundation, intestinal hemorrhage, bowel perforation, and death within 1 month of onset. Survivors may be left with long-term or permanent neuropsychiatric complications.
Childhood TB: Diagnosis of childhood tuberculosisSaide OER Africa
Childhood TB was written to enable healthcare workers to learn about the primary care of children with tuberculosis. It covers: introduction to TB infection, the clinical presentation, diagnosis, management and prevention of tuberculosis in children
Childhood TB: Diagnosis of childhood tuberculosisPiLNAfrica
Childhood TB was written to enable healthcare workers to learn about the primary care of children with tuberculosis. It covers: introduction to TB infection, the clinical presentation, diagnosis, management and prevention of tuberculosis in children
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
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!
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
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
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
Title: Sense of Smell
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 primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
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Couples presenting to the infertility clinic- Do they really have infertility...Sujoy Dasgupta
Dr Sujoy Dasgupta presented the study on "Couples presenting to the infertility clinic- Do they really have infertility? – The unexplored stories of non-consummation" in the 13th Congress of the Asia Pacific Initiative on Reproduction (ASPIRE 2024) at Manila on 24 May, 2024.
2. THE MANTOUX TEST
The Mantoux test is the standard method of
determining whether a person is infected
with Mycobacterium tuberculosis.
The local skin reaction to Tuberculin Purified
Protein Derivative (PPD) injected into the skin is
used to assess the individual’s sensitivity to
tuberculin protein.
3. MANTOUX TEST
The mantoux test is given to :
• Children aged 3 months to 6 years living at
high risk environments.
• Infants and children under six years of age
with a history of residence or prolonged stay
(more than three months) in a country of high
endemic.
4. • There is a history of TB in a household contact
in the last five years.
• Those who have had close contact with a
person with known TB.
5. Administering the Mantoux test
Tuberculin PPD RT 23 SSI, 2 T.U./0.1 ml,
solution for injection:
• 1 dose = 0.1 ml contains 0.04 microgram
Tuberculin PPD.
• Store at 2°C -8°C, protected from light
1ml graduated syringe fitted with a short
bevel 26G (0.45x10mm) needle
6. Injection site
• The test is usually applied on the
middle third of the flexor surface
of the forearm, as a reaction may
be weaker near the wrist or the
elbow joint.
• It is usually applied on the left
forearm.
• Ensure adequate lighting.
• Select an area of healthy skin
which is free of muscle margins,
heavy hair, veins, sores, or scars.
• Only visibly dirty skin needs to be
washed with soap and water
7. Procedure
1)Use a 1mL syringe to
aspirate out 0.1 mL
of PPD RT 23.
2) Inject the PPD
intradermally on the volar
surface of the forearm.
Position the syringe at a
10-15° to the forearm and
insert just below the
epidermis (about 2 mm).
8. 3)Remove the needle quickly.
Do not massage or use
dressing. A well-defined bleb of
6-10mm in diameter should be
formed if injected correctly.If
the bleb is <6mm, repeat the
process 2.5cm from the first
site.
4) Mark down the site, date
and time of injection, both on
the forearm and in patient’s
record.
9. 5) After 48 to 72 hours,
read the test result by
marking down the
transverse diameter of
induration, not erythema,
by Sokal’s ballpoint
method.
6) Measure the largest
transverse diameter of
induration and note down
in millimeters
(mm).
10. READING THE MANTOUX TEST
• The reaction should be
evaluated 48-72 hours after
the injection
• Only the induration, which is
a hard, dense, raised
formation, is measured.
• The area of erythema is not
included in the
measurement.
11. • Measure the diameter of the
induration using a plastic
flexible millimetre (mm) ruler.
12. POSITIVE PPD REACTION
5 or more millimeters 10 or more millimeters 15 or more millimeters
An induration of 5 or more millimeters is
considered positive for
An induration of 10 or more millimeters is
considered positive for
An induration of 15 or more millimeters is
considered positive for
People with HIV
infection
Foreign-born persons People with no risk
factors for TB
Close contacts HIV-negative persons
who inject illicit drugs
People who have had TB
disease before
People with certain
medical conditions
People who inject illicit
drugs and whose HIV
status is unknown
Children younger than 4
years old
13. • A healthy person whose immune system is
normal, induration greater than or equal to 15
mm is considered a positive skin test.
• In most cases,people who have a very small
reaction or no reaction probably do not have
TB infection.
• Induration of less than 2 mm, without
blistering, is considered a negative skin test.
15. False-Positive PPD Reactions
Sometimes people who are not infected with M. tuberculosis will have a
positive reaction to the PPD tuberculin skin test.This is called a false-positive
reaction.
two most common reasons for false positive PPD reactions are:-
• infection with nontuberculous mycobacteria (mycobacteria other than M.
tuberculosis)
• vaccination with BCG (bacillus Calmette-Gurin).
However, the reaction is more likely to be truly caused by TB infection if any
of the following are true:
o The reaction is large
o The person was BCG-vaccinated a long time ago
o The person comes from an area of the world where TB is common
o The person has been exposed to someone with infectious TB disease
o The person's family has a history of TB disease
16. False-Negative Reactions
Some people have a negative reaction to the
tuberculin skin test even though they have TB
infection. These are called false-negative
reactions.
False-negative reactions may be caused by
• Anergy
• Recent TB infection (within the past 10 weeks)
• Very young age (younger than 6 months old)
17. Type of Reaction Possible Cause People at Risk Action to Take*
False-positive
*Nontuberculous
mycobacteria
*BCG vaccination
*People infected with
nontuberculous
mycobacteria
*People vaccinated with
BCG
*Evaluate for TB
disease if person
has TB symptoms
*Assess likelihood
of true TB
infection
False-negative Anergy
Recent TB
infection
Very young age
*HIV-infected people,
other people with
weakened immune
systems
*People infected
with M.
tuberculosis within the
past 10 weeks
*Children younger than
6 months old
*May do anergy
testing
*Retest 10 weeks
after exposure to
TB ended
*Retest when
child is 6 months
old and 10 weeks
after exposure to
TB ended
18. ADVERSE EFFECT
• anaphylactic reaction and foreign body
reaction
• Slight risk of having a severe reaction to the
test including swelling and redness of the arm,
particularly in people who have had TB or
been infected previously and in those who
have previously had the BCG vaccine
• Local reactions such as regional lymphangitis
and adenitis may also occur on rare occasions.
19. CONTRAINDICATION
• severe reaction (e.g:necrosis, blistering,
anaphylactic shock, or ulcerations) to a
previous TST.
20. reference
• http://www.immunisation.ie
• http://www.hkucoi.hku.hk/TST.pdf
• http://www.cdc.gov/tb/publications/factsheet
s/testing/skintesting.htm
• http://www.ncbi.nlm.nih.gov/
• Medical Microbiology and
Immunology,Warren Levinson,McGraw Hill