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64 Cards in this Set

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HIV components/features

# Segmented enveloped virus


# 2 RNA strands


# 3 enzymes : Reverse transcriptase, Protease and Integrase


# gp 120

Can HIV can be transmitted through saliva and kissing?

No it can't

HIV transmission

# Blood


# Sexual intercourse (Semen & Vaginal fluid)


# Vertical transmission (Vaginal delivery, breast milk)

HIV classification by CDC

HIV classification by CDC

Typically HIV symptoms

# Fever


# Fatigue


# HIV wasting syndrome (Weight loss and Diarrhoea of unidentifiable cause)

Oral conditions associated with HIV can be divided into 5 groups, what are they?

Oral conditions due to


1) Microbiological infections (bacteria, fungi like oral thrust, etc)


2) Oral neoplasms


3) Lesion of unknown cause


4) Conditions associated with HIV drugs


5) Neurological conditions

Systemic vs Local anaphylactic reaction

1) Systemic : Penicillin reaction, bee & wasp stings, scorpion stings


2) Local (atopy) : Asthma, atopic dermatitis, hay fever, Reaction to foods, nuts


Bee stings can be local but in case of patients that are allergic to bee stings, it's systemic

Types of hypersensitivity reactions and their time of onset

# Type I & II - 15-30 mins after exposure


# Type III - 3-10 hours


# Type IV - lasts hours or days

Examples of cytotoxic (type 2) hypersensitivity reaction

What drugs are employed in type 3 hypersensitivity to prevent antibody formation

Corticosteroids

Type 4 hypersensitivity is the reaction seen in which kind of microbiological agents

Intracellular microbes (viruses, tuberculosis, parasites, fungi)

Examples of type 4 hypersensitivity

# Tuberculin skin test & TB


# Allergic Contact dermatitis (different from atopic dermatitis)


# Graft rejection

Types of autoimmune diseases

# Organ specific


# Organ non-specific (systemic)

Organ specific autoimmune disease

Organ non-specific autoimmune diseases

You're wondering why lupus is autoimmune. Remember the antibodies are formed against your body's own DNA molecules

Types of lupus erythematosus

# Systemic lupus erythematosus (SLE)


# Discoid lupus erythematosus (DLE; primarily affects the skin involving the cheeks and nose)


# Drug-induced lupus erythematosus


# Neonatal lupus erythematosus


Both systemic and discoid lupus are autoimmune diseases

Discoid lupus erythematosus (more of an organ specific autoimmune disease)

# primarily appear as skin lesions around the cheeks and nose

Which HLA molecules fall into MHC class I and II. What T cells promote function of those molecules

# MHC class 1 : HLA A, B & C


# MHC class 2: HLA D


# MHC class 3: complement system



Class 1 functions by cytotoxic (CD8+) and Class 2 functions by Helper T cells (CD4+)

Types of transplant rejection reaction

# Hyperacute rejection


# Acute rejection


# Chronic rejection

Explain the various transplant rejections. What type of molecules/cells mediate the occurrence of each of them

Does advanced maternal age increase the risk of mutation in offspring

Yes, it does

Types of genetic mutations

1) Single gene/Mendelian mutation


2) Multiple gene/Polygenic/Multifactorial mutation


3) Chromosomal mutation (addition of or removal of a whole chromosome)


4) Mitochondrial DNA mutation

What causes Duchenne muscular dystrophy

Dystrophin

Glomerular diseases are more common than hypertension and diabetes. T/F

False

Epidemiology of Glomerular diseases

Glomerulus, mesangium, basement membrane, podocytes image

Methods the glomerular cells respond to injury

P. I. P


1) Phagocytosis (by mesangial cells)


2) Proliferation


3) Irreversible cell damage + fibrosis

Do immune complexes always cause diseases?

No they don't always

The glomerular Filtration barrier has how many layers of negative charge. What are they?

# 2 layers


# Glomerular endothelium and the Basement membrane

The glomerular Filtration barrier has how many layers of negative charge. What are they?

# 2 layers


# Glomerular endothelium and the Basement membrane

Glomerular disease that cause nephritic syndrome

# Circulating immune complex glomerulonephritis (eg post strep glomerulonephritis, SLE)


# Anti-GBM glomerulonephritis (rapidly progressive glomerulonephritis)


# Alport syndrome (mutation in collagen of GBM)

Glomerular disease that cause nephrotic syndrome

# In-situ immune complex glomerulonephritis


# NPHS 1 & 2 gene mutation

The effect or appearance of the glomerulus / basement membrane in conditions of nephritis syndrome is

# Swiss cheese appearance or Sieve effect

What is goodpasture syndrome

# AKA Anti-GBM glomerulonephritis


# It's an autoimmune disease & type 2 hypersensitivity condition


# Auto antibodies are directly against alpha-3 chain of type 4 collagen of basement membrane in KIDNEY & LUNGS


# This causes hematuria (nephritic syndrome) and rapidly progressive renal failure in kidneys; and hemoptysis and cough in lungs

What factor is known to regulate C3 convertase? What is the name of the auto antibody that stabilize c3 convertase

# H factor


# C3 nephritic factor (C3NF)

Podocytes injury is classified into? Where are these injuries seen

# Reversible (in immature podocytes)


# Irreversible injury with scarring (in mature podocytes cos they don't proliferate)


# Reversible injury is seen in Minimal Change Disease (which is in children cos their podocytes are immature and still developing)


# Irreversible injury is seen in Focal Segmental Glomerulosclerosis (FSGS) [in adults cos their podocytes are already developed and mature]

Genetic causes of Glomerular diseases

Causes of Nephritic syndrome

Causes of Nephrotic syndrome

APOL 1 gene has been linked to non diabetic nephropathy. T/F

True

APOL 1 GENE

Define the terms Segmental, Focal, global, diffuse, membranous with respect to kidney

The commonest and 2nd commonest cause of lower GI bleeding in adults and children

In adults


Commonest: Diverticulosis


2nd Commonest: Telangiectasia



In children/young people


Commonest: Hemorrhoids

Commonest cause of upper GI bleeding is

Peptic ulcer disease

Classes of GI bleeding

# Upper vs Lower GI bleeding


# Occult vs Overt


# Obscure vs Obvious

Grading of finger clubbing

Mention the chest/thoracic contours

# Barrel chest


# Pectus excavatum (funnel-shaped)


# Pectus carinatum


# Kyphosis


# Scoliosis


# Kyphoscoliosis

Images of chest/thoracic contours

Conditions that deviate trachea and mediastinum to affected side

# Pulmonary fibrosis


# Atelectasis

Conditions that deviate trachea and mediastinum to unaffected side

# Pnemothorax


# Pleural effusion

Conditions that do not deviate trachea and mediastinum

Consolidation


COPD

What happens to fremitus on COPD

Decreased fremitus

Lung is hyper-resonant to percussion in what 2 cases

# Pneumothorax


# COPD (hyperinflation)

Which respiratory infections are more common; Upper or lower resp tract. What are they commonly caused by?


What bacteria is also known to cause URTIs? What % is attributed to the bacteria?

# Upper respiratory tract infection (URTI)


# Viruses.


# Streptococcus pyogenes (15%)

Spectrum of diseases in URTI

# Rhinitis


# Sinusitis


# Rhinosinusitis


# Pharyngitis/Tonsillitis


# Laryngitis


# Tracheitis

Presentation of URTI

# Nasal discharge ; nasal congestion


# Sneezing


# Sore throat & cough


# Fever, malaise


# Loss of voice


# Headaches

Guidelines for prescribing antibiotics for upper respiratory tract infection

Depending on the severity, one of the 3 should be done


1) No prescribing (most URTI are of viral origin & will resolve spontaneously)


2) Delayed prescribing (if no recovery after giving patient time to recover)


3) Immediate prescribing

Indications for immediate antibiotics prescription in URTI

Centor's criteria for strep pharyngitisl

Antibiotics used for URTI when indicated

# Penicillin (amoxicillin, amoxicillin + clavulanate)


# 1st and 2nd generation cephalosporins


Note: Amoxicillin + clavulanate is called Augmentin

Respiratory causes of finger clubbing

# Suppurative lung disease (like bronchiectasis, lung abscesses, empyema)


# Pulmonary fibrosis


# Lung malignancy


# Complicated TB


# Mesothelioma

Chest x ray findings in a patient with Pulmonary TB

# Cavitation


# Pulmonary fibrosis

Difference between erythema and petechaie/purpura

# Erythema is blanchable (bcos it is due to vasodilation, pressure constrict the vessel back causing the skin to appear normal)


# Petechaie/purpura/ecchymoses are Non-blanchable