Cellulitis is a bacterial infection of the deep dermis and subcutaneous tissue. It is most commonly caused by S. pyogenes and S. aureus.5 Bacteria may gain access to the dermis via a break in the skin barrier in healthy adults, whereas the hematogenous route is more common in immunocompromised patients.
The affected skin is usually erythematous, swollen, painful, and warm to the touch. Severe cellulitis can be complicated by bullae, pustules, or necrotic tissue. Damage to lymphatic vessels can lead to recurrent episodes of cellulitis.6 In areas of the world endemic for lymphatic filariasis, it is important to rule out this disease in cases of recurrent bouts of lower-extremity cellulitis and lymphangitis.
Cellulitis is a bacterial infection of the deep dermis and subcutaneous tissue. It is most commonly caused by S. pyogenes and S. aureus.5 Bacteria may gain access to the dermis via a break in the skin barrier in healthy adults, whereas the hematogenous route is more common in immunocompromised patients.
The affected skin is usually erythematous, swollen, painful, and warm to the touch. Severe cellulitis can be complicated by bullae, pustules, or necrotic tissue. Damage to lymphatic vessels can lead to recurrent episodes of cellulitis.6 In areas of the world endemic for lymphatic filariasis, it is important to rule out this disease in cases of recurrent bouts of lower-extremity cellulitis and lymphangitis.
Boil is an acute staphylococcal infection of a hair follicle with perifolliculitis which usually proceeds to suppuration & central necrosis.Often boil open on its own & subsides (S. aureus infection)
Skin warts are benign tumours caused by infection of keratinocytes with HPV, visible as well‐defined hyperkeratotic protrusions. We will explore the detailed types, presentation, and treatment modalities of most common warts.
DIABETIC FOOT ULCER- / SURGICAL WOUNDS
#surgicaleducator #diabeticfootulcer #surgicaltutor #babysurgeon #usmle
• Dear Viewers,
• Greetings from “Surgical Educator”
• Today in this episode I have discussed Diabetic Foot Ulcer- DFU
• It is a complication of Type 2 Diabetes
• I have discussed about the overview, epidemiology, etiopathogenesis, clinical features, assessment, investigations, grading and treatment of Diabetic Foot Ulcer- DFU
• I hope this video is interesting and also useful to all of you
• You can watch the video in the following links:
• surgicaleducator.blogspot.com youtube.com/c/surgicaleducator
Boil is an acute staphylococcal infection of a hair follicle with perifolliculitis which usually proceeds to suppuration & central necrosis.Often boil open on its own & subsides (S. aureus infection)
Skin warts are benign tumours caused by infection of keratinocytes with HPV, visible as well‐defined hyperkeratotic protrusions. We will explore the detailed types, presentation, and treatment modalities of most common warts.
DIABETIC FOOT ULCER- / SURGICAL WOUNDS
#surgicaleducator #diabeticfootulcer #surgicaltutor #babysurgeon #usmle
• Dear Viewers,
• Greetings from “Surgical Educator”
• Today in this episode I have discussed Diabetic Foot Ulcer- DFU
• It is a complication of Type 2 Diabetes
• I have discussed about the overview, epidemiology, etiopathogenesis, clinical features, assessment, investigations, grading and treatment of Diabetic Foot Ulcer- DFU
• I hope this video is interesting and also useful to all of you
• You can watch the video in the following links:
• surgicaleducator.blogspot.com youtube.com/c/surgicaleducator
This Presentation Contains Infectious Dermatoses i.e. bacterial, viral, fungal and parasitic skin Infections. For Comments write to juma.sammy2@gmail.com
Clinical immunology is the study of diseases caused by disorders of the immune system (failure, aberrant action, and malignant growth of the cellular elements of the system). It also involves diseases of other systems, where immune reactions play a part in the pathology and clinical features.
Children's skin problems span nearly two decades from birth through adolescence. Several common pediatric skin conditions will be discussed including: diaper dermatitis, atopic dermatitis, warts, and acne.
follow me on my YouTube channel :- medic o mania
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.
Explore natural remedies for syphilis treatment in Singapore. Discover alternative therapies, herbal remedies, and lifestyle changes that may complement conventional treatments. Learn about holistic approaches to managing syphilis symptoms and supporting overall health.
- 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
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.
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
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
2. DEFINITION
An acute, diffuse, spreading infection of the
skin, involving the deeper layers of the skin and
the subcutaneous tissue.
Periorbital cellulitis is a special form of cellulitis
that usually occurs in children. In this form of
cellulitis, unilateral swelling and redness of the
eyelid and orbital area, as well as fever and
malaise are usually present.
4. CAUSES
Staphylococcus
Streptococcus Group A β
H. Influenzae (periorbital cellulitis)
pasteurella multocida
Facial cellulitis in children < 3 years old
Hemophilus influenzae or Streptococcus
pneumoniae
5.
6. PREDISPOSING RISK FACTORS
Local trauma (e.g., lacerations, insect bites,
wounds, shaving)
Skin infections such as impetigo, scabies, furuncle,
tinea pedis
Underlying skin ulcer
Fragile skin
Immunocompromised host
Diabetes mellitus
Inflammation (e.g., eczema)
Edema secondary to venous insufficiency or
lymphedema
7. TYPICAL FINDINGS OF
CELLULITIS
History
Presence of predisposing risk factor
Area increasingly red, warm to touch, painful
Area around skin lesion also tender but pain
localized
Edema
Mild systemic symptoms – low-grade fever, chills,
malaise, and headache may be present
8. Physical Assessment
Local symptoms:
Erythema and edema of area
Warm to touch,
Possibly fluctuant (tense, firm to palpation)
May resemble peau d’orange
Advancing edge of lesion diffuse, not sharply
demarcated
Small amount of purulent discharge may be
present
Unilateral
12. MANAGEMENT AND
INTERVENTIONS
Do not underestimate cellulitis. It can spread very
quickly and may progress rapidly to necrotizing
fasciitis. It should be treated aggressively and
monitored on an ongoing basis
13. Goals of Treatment for Mild
Cellulitis
Resolve infection
Identify formation of abscess
Check tetanus prophylaxis
14. Non-pharmacologic
Interventions
Apply warm or, if more comfortable, cool saline
compresses to affected areas qid for 15 minutes.
Mark border of erythema with pen to monitor
spread.
Elevate, rest and gently splint the affected limb.
15. Pharmacologic Interventions
Pain management:
acetaminophen 10-15mg/kg per day po q4-6hours.
Do not exceed 75mg/kg per 24 hours
Oral antibiotics if no known MRSA or non-purulent
cellulitis:
cephalexin 40mg/kg per day po divided qid for 7-10
days uUsually first choice due to taste), or
cloxacillin 40mg/kg per day po divided qid for 7-10
days
Patients with penicillin allergy:
erythromycin 40 mg/kg/day divided bid for 7-10
days
Patients with known community acquired MRSA or
purulent cellulitis:
trimethoprim-sulfamethoxazole 8-12 mg / kg per day
po bid for 7 days (dosing is based on trimethoprim)
16. Pregnant or Breastfeeding Women
Cephalexin, cloxacillin, erythromycin and
acetaminophen may be used as listed above.
Trimethoprim-sulfamethoxazole is contraindicated
