This document provides an overview of blepharitis, including:
- Blepharitis is inflammation of the eyelid margins and is one of the most common and difficult to treat eye conditions. It can be caused by bacterial infection, dry eye, or skin conditions like rosacea.
- There are two main types - anterior blepharitis affecting the base of the eyelashes, and posterior blepharitis involving the meibomian glands. Anterior blepharitis has staphylococcal and seborrheic variants.
- Symptoms include burning, grittiness, dryness, and worsening in the morning. Signs include scales, debris, hyp
The eyelids are mobile tissue curtains placed in front of the eyeballs. These act as shutters protecting the eyes from injuries and excessive light. These also perform an important function of spreading the tear film over the cornea and conjunctiva and also help in drainage of tears by lacrimal pump system.
blepharitis is an eye disorder , this is divided into two types. one anterior blepharitis another is posterior blepharitis .this caused by other organisms like staphylococcus and dryness of the eyes, avoid touching of the eye .advice to take the medication as prescribed by the doctor.
The eyelids are mobile tissue curtains placed in front of the eyeballs. These act as shutters protecting the eyes from injuries and excessive light. These also perform an important function of spreading the tear film over the cornea and conjunctiva and also help in drainage of tears by lacrimal pump system.
blepharitis is an eye disorder , this is divided into two types. one anterior blepharitis another is posterior blepharitis .this caused by other organisms like staphylococcus and dryness of the eyes, avoid touching of the eye .advice to take the medication as prescribed by the doctor.
Red Eye - Common Causes, Diagnosis and Treatment.pptxMedinfopedia Blog
Red eye is a non-specific term that is used to describe an eye that appears red due to intraocular or extra-ocular pathologies which can be as a result of infections, inflammations, allergies or trauma.
It is usually as a result of vasodilation in the anterior portion of the eye. It is a sign of an underlying disease, not a diagnosis.
this document is designed and serving to successfully help students, teachers or ophthalmic clinicians to deliver a sustained and effective management of conjuctiva disorders
Opthalmology, the red eyes & more on the red eyesSalimKun
Opthalmology, the red eyes & more on the red eyes
Objective
To Know about reason of the red eyes.
Avoid or prevent of the red eyes.
To know method to treat of the red eyes.
Red Eye - Common Causes, Diagnosis and Treatment.pptxMedinfopedia Blog
Red eye is a non-specific term that is used to describe an eye that appears red due to intraocular or extra-ocular pathologies which can be as a result of infections, inflammations, allergies or trauma.
It is usually as a result of vasodilation in the anterior portion of the eye. It is a sign of an underlying disease, not a diagnosis.
this document is designed and serving to successfully help students, teachers or ophthalmic clinicians to deliver a sustained and effective management of conjuctiva disorders
Opthalmology, the red eyes & more on the red eyesSalimKun
Opthalmology, the red eyes & more on the red eyes
Objective
To Know about reason of the red eyes.
Avoid or prevent of the red eyes.
To know method to treat of the red eyes.
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
Anti ulcer drugs and their Advance pharmacology ||
Anti-ulcer drugs are medications used to prevent and treat ulcers in the stomach and upper part of the small intestine (duodenal ulcers). These ulcers are often caused by an imbalance between stomach acid and the mucosal lining, which protects the stomach lining.
||Scope: Overview of various classes of anti-ulcer drugs, their mechanisms of action, indications, side effects, and clinical considerations.
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
- 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
Prix Galien International 2024 Forum ProgramLevi Shapiro
June 20, 2024, Prix Galien International and Jerusalem Ethics Forum in ROME. Detailed agenda including panels:
- ADVANCES IN CARDIOLOGY: A NEW PARADIGM IS COMING
- WOMEN’S HEALTH: FERTILITY PRESERVATION
- WHAT’S NEW IN THE TREATMENT OF INFECTIOUS,
ONCOLOGICAL AND INFLAMMATORY SKIN DISEASES?
- ARTIFICIAL INTELLIGENCE AND ETHICS
- GENE THERAPY
- BEYOND BORDERS: GLOBAL INITIATIVES FOR DEMOCRATIZING LIFE SCIENCE TECHNOLOGIES AND PROMOTING ACCESS TO HEALTHCARE
- ETHICAL CHALLENGES IN LIFE SCIENCES
- Prix Galien International Awards Ceremony
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
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
2. Introduction
• Blepharitis is inflammation or infection of the
eyelid margins .
• Blepharitis is one the most common
ophthalmological complications as well as one
of the most difficult conditions to treat.
3. Blepharitis
•Blepharitis is a common eyelid inflammation that
sometimes is associated with a bacterial eye
infection, symptoms of dry eyes or certain types of
skin conditions such as acne rosacea.
• Blepharitis is one of the most frequently observed conditions
among eye care practitioners, yet remains largely
misunderstood.
4. SLIT-LAMP
BIOMICROSCOPY
The slit-lamp biomicroscope is an
important diagnostic instrument for
the examination of the anterior eye
structures as well as the contact lens.
Being able to proficiently use the
instrument is important. It use
critical in the fitting of contact
lenses.
5.
6. CLASSIFICATION
I will discuss blepharitis according to
its predominant anatomic location,
as :
anterior
posterior
8. Anterior blepharitis
Anterior blepharitis is characterized by inflammation at
the base of the eyelashes .
Patients with anterior blepharitis, compared to those
with posterior blepharitis, are more likely to be female
and younger *
9. Two variants of anterior blepharitis are
identified: staphylococcal and seborrheic.
In staphylococcal anterior blepharitis,
colonization of the eyelids by staphylococci leads
to formation of fibrinous scales and crust around
the eyelashes.
The seborrheic variant is characterized by
dandruff-like skin changes around the base of
the eyelids, resulting in greasy scales around the
eyelashes.
10. PATHOPHYSIOLOGY
The pathophysiology of blepharitis is not completely
understood. A role for lid-colonizing staphylococcal
bacteria was first noted in 1946 . Several mechanisms by
which staphylococci may alter meibomian gland secretion
and cause blepharitis are supported by many studies .
Direct infection of the lids
Evoke reaction to staphylococcal exotoxin
Provoke allergic response to staphylococcal antigens .
It is likely that a combination of these is responsible for the
clinical manifestations of staphylococcal blepharitis.
11. CLINICAL
PRESENTATION
symptoms
burning , grittiness and mild photophobia with
remission and exacerbation is characteristic .
Symptoms are usually worse in the morning ,
although in patients with dry eye they may
increase during the day .
12. signs
A. Staphylococcal blepharitis
Hard scales and crusing mainly located around
the bases of the lashes esp. collorette
chronic conjunctival hyperemia with mild
papillary conjunctivitis .
13. Staphylococcal blepharitis
Hyperaemia and telangiectasia of •
anterior lid margin
Scarring and hypertrophy if •
longstanding
Scales around base of lashes •
(collarettes)
Chronic irritation worse in morning•
14. Cont. Signs of Staphylococcal
blepharitis
scarring and
notching (tylosis) of the lid margin
trichiasis (misdirected eyelashes)
madarosis (loss of lashes) or
poliosis (loss of pigmentation of lashes) in
sever long standing cases
16. secondary changes include :
stye formation
marginal keratitis and occasionally
phlyctenulosis (Corneal nodulesthat developed
near the limbus and then spread onto the
cornea, carrying behind them a leash of vessels)
associated with tear film instability and dry eye
.
Cont. Signs of Staphylococcal blepharitis
17. The diagnosis of blepharitis is clinical, based on
the patient's history and physical examination
findings. There are no confirmatory diagnostic
tests or laboratory investigations.
The history should include questions about
symptom duration, smoking, allergens, contact
lenses, and use of retinoids which may provoke
or exacerbate symptoms. A history of acne,
rosacea, or eczema should be evaluated .
DIAGNOSIS
18.
19. EXAMINATION OF THE TEAR FILM
Bubbles, also called frothing, can sometimes be seen in the tear
film, especially along the lid margins. This can indicate
meibomianitis.
20.
21. The lashes should be examined
for abnormalities such blepharitis.
With blepharitis there will be
collarettes found at the base of
the lashes.
Plugged gland
23. Treatment for Blepharitis
• Anterior Blepharitis
• staphylococcal blepharitis
• more severe
loss of eyelashes
• eyelid cleansing and hygiene
•antibiotic ointment for
eyelids Viruses and other
types of
• bacteria besides
staphylococcus also can cause
• anterior blepharitis
• Seborrheic blepharitis
seborrheic dermatitis
Regular cleansing with eyelid
scrubs and gentle, non-
detergent shampoos
24. Without treatment :
blepharitis caused by bacteria can cause
long-term effects such as ectropion,
thickened lid margins, dilated and visible
capillaries, trichiasis and entropion.
In cases of trichiasis and entropion, the
cornea may exhibit significant erosion
from eyelashes rubbing against the eye.
25. Eyelid Hygiene Relieves Blepharitis
Symptoms
Blepharitis can be difficult to manage because it is often chronic,
meaning that it never warm compress goes away completely.
Your eye doctor may recommend one or more of these steps
involving good eyelid hygiene and massage:
Apply a such as a washcloth to the outer eyelids.
Cleanse the eyelids with a commercial lid scrub or other
recommended product.
Gently massage the outer eyelids.
A warm compress loosens the crust on your eyelids and eyelashes
before you clean them. The warmth also can loosen any blocked
residue in the oil-secreting meibomian glands in your eyelids
26. Does blepharitis cause Contact
lens intolerance?
If you wear soft contact lenses, your eye doctor may
prescribe RGP contacts instead or may recommend more
frequent replacement of your soft contacts to reduce lens
deposits that may be associated with your blepharitis.
Depending on the severity of your symptoms, you may need to
discontinue contact lens wear altogether for a while.
27. According to recent research
People With Blepharitis More Likely to Have Certain
Inflammatory Diseases
Psychological Issues
Cardiovascular Diseases and More