Routes of transmission. DIRECT: Contact with infectious lesions, blood or saliva INDIRECT: Contact...
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- Slide 1
- Routes of transmission
- Slide 2
- DIRECT: Contact with infectious lesions, blood or saliva
INDIRECT: Contact with contaminated objects SPLATTER: Bodily fluids
on broken skin AIRBOURNE: Through bio-aerosols DENTAL UNIT
WATERLINES: Ingest or inhale pathogenic micro organisms from bio
films
- Slide 3
- *1*1 *2*2 *3*3 *4*4 AT1
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- * 1 Ingestion * 2 Absorption * 3 Via an insect carrier * 4
Injection / Inoculation injury (puncture of the skin) AT1
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- Natural lines of defence against attack by pathogens * Intact
skin, mucous membrane and hair * Surface secretions, such as sweat
and saliva * Tears * Stomach acid * Coughing and sneezing
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- * Immune response
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- * These are types of patients have a defective immune system. *
Causes may be * 1.Leukaemia * 2.Oncology chemotherapy/radiotherapy
* 3.kidney failure * 4.HIV/AIDS * 5.Diabetes
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- Slide 9
- * The bodies normal reaction to an exposure of a pathogenic
micro- organism, irritant or physical exposure
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- * 1. * 2. * 3. * 4. * 5. AT2
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- * 1. Heat * 2. Swelling * 3. Pain * 4. Redness * 5. Loss of
function
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- * Leucocytes flood the area of infection * The toxins produced
by a pathogen cause the bodies temperature to rise * Normal body
temperature is 37C * Rise in body temperature pyrexia
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- * Increase in blood volume to the area * Tissues appear red and
swollen to touch HERPETIC WHITLOW
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- * Swollen tissues put pressure onto surrounding nerves * Area
becomes too painful to use * Eventual loss of function
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- * To reiterate an infection is the invasion of the body cells
by a pathogen * Acute infection a rapid onset, brief symptoms and
resolved with a few days * Chronic infection occurs over a longer
period with few symptoms present AT3
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- * Destruction of both leucocytes and pathogens occur * This
debris collects to form Pus * Pus remains in the area to form an
Abscess * If left unmanaged this can spread to surrounding tissues
and cause Cellulitis
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- * If the infection is overcome the body repairs itself. *
Leucocytes travel to the area, remove any dead or damaged tissue *
Lay down temporary repair layer Granulation tissue Eventually scar
tissue is formed
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- * Over the last three decades there has been emergence of new
diseases such as * Coxsackievirus (hand-foot and mouth) emergence
in humans * Virulent diseases that currently our immune system and
the use of drugs are unable to fight effectively such as * Variant
Cruetzfeldt-Jacob Disease (vCJD) prion * Severe Acute Respiratory
Syndrome (SARS) virus * Ebola virus * Methicillin Resistant
Staphylococcus Aureus (MRSA) Superbug bacteria
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- Clue: itis
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- * Micro organisms not only cause disease and illness but also
present in a range of lesions and conditions which as a dental
nurse must be able to recognise * In your groups pair the
definitions to the descriptions and the clinical photograph
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- * Antibiotics Bacteria * Anti- virals- cold sores *
Anti-fungals- thrush Powerful and difficult to control
micro-organisms are known as Virulent
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- * Historically antibiotic cover used to be given an hour before
dental treatment. * Risk of allergic reaction began to outweigh the
benefit. * What conditions????? * Rheumatic fever historical
illness that caused scarring and pitting to the inner lining of the
heart. * Bacteremia (bacteria in the blood) could lodge in the
oit/scar and cause inflammation of the inside of the heart known as
Endocardititis * Prophylactic (given before) antibiotics are only
given upon requests of the patients cardiologist and shown in
writing
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- Each used to alleviate pain but some have more characteristic
effects. These should be avoided during pregnancy. * Paracetamol
-antipyretic properties, exceeded doses cause liver damage possibly
leading to fatality * Ibuprofen -NSAID non steroidal
anti-inflammatory, safer than paracetamol. Can cause stomach
ulcers. NOT to be given to asthmatics * Aspirin -
anti-inflammatory, acts as an anticoagulant. Can cause stomach
ulcers. NOT to be given under 16 and to asthmatics
- Slide 24
- Research the following viruss and analyse the mode of
transmission and the effects on the body. This must be presented in
a PowerPoint, you may research using your mobile phones if this is
quicker and then develop your presentation. EVERYONE must present a
key point to the class from your presentation. Maximum 5 slides
duration * Hepatitis B - green group * Hepatitis C red group *
Human Immunodeficiency Virus (HIV) blue group * Herpes Simplex
yellow group During each presentation you will be expected to take
notes of each other groups findings NB- this will be saved onto
memory stick.