Diseases And Conditions Flashcards
What is anaemia?
Low Hb
What is polycythaemia?
High Hb
What is leukopenia?
Low WCC
What is leukocytosis?
High platelets
What is pancytopenia?
All cells reduced
What is the origin or red blood cells and platelets?
Myeloid origin
What are the normal Hb levels in a male?
130-180g/L
What are the normal Hb levels in a female?
115-165 g/L
What is the normal RCC in a male?
4.5-6.5 x10^12 /L
What is the normal RCC in a female?
3.8-5.8 x10^12 /L
What is the normal WCC?
4.0-11.0 x10^9/ L
What is the normal MCV?
80-100 fL
What is the normal HCT?
27-32 pg
What is the normal PLT?
150-450 x10^9 /L
What are the three haemantinics?
Iron, vitamin b12, folic acid
What are the three haemantinics?
Iron, vitamin b12, folic acid
What are the sources and losses of iron?
Sources: meat, green leafy veg, supplements
Losses: achlorhydria, IBD, bowel cancer
What are the sources and losses of vitamin b12?
Sources: milk, meat
Losses: lack of intake, lack of intrinsic factor, Crohn’s disease
What are the sources and losses of folic acid?
Sources: green veg, legumes
Losses: lack of intake, absorption failure
What is the therapeutic INR:
2-3
What is a dangerous INR?
> 4
What is the definition of lymphoma?
Clonal proliferation of lymphocytes
What are the symptoms of lymphoma?
Fever
Face/neck swellings
Lump in neck/armpits
Excessive night sweats
Weight loss
Loss of appetite
What is the clinical presentation of Hodgkin lymphoma?
Fever
Night sweats
Itching
What is the clinical presentation of Non-Hodgkin Lymphoma?
Extra nodal disease
Symptoms of marrow failure
What are the features of Hodgkin Lymphoma?
Peak age 15-40 years
2M:1F
Stage I&II: 90% cure
Stage III&IV: 50-70% cure
What are the features of Non-Hodgkin Lymphoma?
Peak age: any age
85% affects B cells
15% affects T cells
>50% relapse rate
What are the investigations for lymphoma?
Physical exam
Biopsy
Blood tests
Scanning
What is the treatment for lymphoma?
Chemotherapy
Radiotherapy
mAbs
Haemopoietic stem cell transplant
What is the definition of multiple myeloma?
Malignant proliferation of plasma cells
What is the clinical presentation of multiple myeloma?
Monoclonal paraprotein in blood and urine
Lytic bone lesions
Excess plasma cells in bone marrow leading to marrow failure
Anaemia
Hypercalcaemia
What are the symptoms of leukaemia ?
Fever/chills
Persistent fatigue
Frequent infections
Weightloss
Swollen nodes
What are the symptoms of multiple myeloma?
Bone pain
Fatigue
Weight loss
Repeated infections
What are the investigations for multiple myeloma?
CT/MRI scans
Bone marrow biopsy
What is the treatment for multiple myeloma?
Anti-myeloma medicines
Chemotherapy
Radiotherapy
mAbs
Haemopoietic stem cell transplant
What is the definition of leukaemia?
Group of cancers of the bone marrow which prevents normal manufacture of the blood
What are the clinical features of leukaemia?
Anaemia
Neutropenia
Thrombocytopenia
Lymphadenopathy
Splenomegaly
Bone pain
What are the features of Acute lymphoblastic leukaemia (peak age, % cured, prognosis m vs f)
Peak age: 4 years
80% children cured
Better prognosis in females
What are the features of acute myeloid leukaemia? (Peak age, cure rate under 60, cure rate over 70)
Peak age: elderly
30-40% under 60s cured
10% over 70 cured
What are the features of chronic lymphocytic leukaemia (peak age, M:F, what it is)
Peak age: 70 years
2M:1F
B-cell clonal lymphoproliferative disease
What are the features of chronic myeloid leukaemia (peak age, effect on neutrophils, presentation)
Peak age: 50-70 years
Increase in neutrophils and their precursors
Fatigue, weightloss and sweating
What chromosome is associated with chronic myeloid leukaemia?
Philadelphia chromosome
What are the risk factors of leukaemia?
Previous cancer treatment
Genetic disorders
Smoking
Family history
What are the investigations for leukaemia?
Blood tests
Bone marrow tests
What is the treatment for leukaemia?
Chemotherapy
Radiotherapy
mAbs
Haemopoietic stem cell transplant
What is poryphyria?
An abnormality of haem metabolism
What is the presentation of porphyria?
Photosensitive rash
Hypertension
Tachycardia
Neuropsychiatric disturbances
What are the signs of anaemia?
Pale
Tachycardia
Enlarged liver/spleen
What are the symptoms of anaemia?
Tired
Dizzy
Shortness of breath
Palpitations
What are the causes of anaemia?
Reduced production: reduced haemantinics
Increased loss: bleeding, autoimmune, thalassaemia, sickle cell)
What are the investigations for anaemia?
History
Full blood count
Faecal occult bloods
Endoscopy
Bone marrow examination
What is the treatment for anaemia?
Haematinic replacement
Transfusion/eryththropoetin (in production failure)
What is the effect of anaemia on GA?
Reduced O2 capacity
What is the effect of anaemia on the oral cavity?
Mucosal atrophy
Candidiasis
Recurrent ulceration
Sensory changes
What is the definition of Macrocytic?
> 100 fL
What is the definition of Microcytic?
<80 fL
What is the definition of normocytic?
80-100 fL
What is Macrocytic anaemia associated with?
Vit b12 deficiency
Folate deficiency
Drug induced
What is Microcytic anaemia associated with?
Iron deficiency
Chronic inflammatory disease
Thalassaemia
What is normocytic anaemia associated with?
Haemolytic anaemia
Blood loss
Bone marrow disorders
What are the four stages in the process of haemostasis?
Vasoconstriction
Platelet plug
Coagulation Cascade
Fibrin plug
What are the stages in the process of platelet plug formation?
ECM releases cytokines and inflammatory markers
Platelets adhere to each other
Platelet plug forms
What mediators do platelets release?
ADP
Serotonin (maintains vasoconstriction)
Prostaglandins and phospholipids (maintain vasoconstriction)
What is the intrinsic pathway in the coagulation cascade?
XII -> XIIa
XI -> XIa (via XII)
IX -> IXa (via XIa)
What is the extrinsic pathway in the coagulation cascade?
VII -> VIIa (via III)
What is the extrinsic pathway in the coagulation cascade?
VII -> VIIa (via III)
What is the common path in the coagulation cascade?
Prothrombin -> thrombin (via Va)
Fibrinogen -> fibrin (via thrombin)
Fibrin -> cross-linked fibrin clot (via XIIa)
What is the definition of haemophillia?
Rare inherited condition that affects the body’s ability to form clots
What are the clinical features of mild haemophilia?
Bleeding occurs after injury, surgery or extraction
What are the clinical features of moderate haemophilia?
Bleeding into joints and muscles after mild injury or spontaneously
What are the clinical features of severe haemophilia?
Spontaneous bleeding into joints and muscles
What is the cause of haemophilia A?
Low clotting factor VIII (8)
What is the cause of haemophilia B?
Low clotting factor IX (9)
What are the investigations for haemophilia?
Blood test
Clotting screen
Genetic test
What is the treatment of severe and moderate haemophilia A?
Recombinant factor VII
What is the treatment of mild haemophilia A and carriers?
DDAVP (desmopressin)
Transaeximic acid
What is the treatment for haemophilia B?
Recombinant factor IX
What is the definition of Von Willebrand’s disease?
Deficiency of Von Willebrand’s factor resulting in reduction of factor VIII
What are the clinical features of Von Willebrand’s disease?
Large/easy bruising
Frequent nose bleeds
Bleeding gums
Heavy periods
What kind of mutation causes Von Willebrands disease?
Autosomal dominant mutation
What are the investigations for Von Willebrand’s disease?
Blood test
Genetic test
What is the treatment for severe and moderate Von willebrands disease?
DDAVP
What is the treatment of mild Von Willebrand’s disease and carriers?
Transexaemic acid
What is Thrombophilia?
Increased risk of blood clot development
What are the causes of Thrombophilia?
Protein s/c deficiency
Antithrombin 3 deficiency
Factor V Leiden variant
Cancer
Pregnancy
What is the minimum platelet count for primary care?
100 x10 ^9
What is the minimum platelet count for hospital care?
50 x10 ^9
What are the irreversible risk factors for CVD?
Age
Sex
Family history
What are the reversible risk factors of CVD?
Smoking
Obesity
Diet
Exercise
Hypertension
Hyperlipidaemia
Diabetes
What is the primary preventions for CVD?
Exercise
Diet
Not smoking
What are the secondary preventions for CVD?
Medical treatments to reduce risk
What are the four features of Stable angina?
(Cause, ischaemic/infact, ECG, troponins)
Pain due to increased demand due to atherosclerotic plaque
Demand ischaemia, not infarction
Normal ECG
Normal troponins
What are the four features of unstable angina?
(Cause, ischaemic/infact, ECG, troponins)
Plaque ruptures, thrombus formation, partial occlusion of vessel, pain at rest
Supply ischaemia, no infarct
ECG: normal, inverted T waves or ST depression
Normal troponins
What are the four features of an NSTEMI?
(Cause, ischaemic/infact, ECG, troponins)
Plaque ruptures, thrombus formation, partial occlusion of vessel, subendocardial myocardium infarction
Subendocardial infarct
ECG: normal, inverted T waves or ST depression
Elevated troponins
What are the four features of a STEMI?
(Cause, ischaemic/infact, ECG, troponins)
Complete occlusion of blood vessel lumen, transmural injury and infarction to myocardium
Transmural infarct
ECG: hyperacute T waves or ST elevation
Elevated troponin
What is cyanosis?
5g/dL or more deoxygenated Hb in blood
What is a cause of central cyanosis?
Congenital heart disease
What is a cause of peripheral cyanosis?
Cold environment
What is the definition of angina?
Reversible ischaemia of the heart muscle
What are the symptoms of angina?
Central crushing chest pain
May radiate to arm/back/jaw
What are the investigations of angina?
ECG
Angiography
Echocardiogram
Isotope studies
What are the treatment options for angina?
Reduce O2 demands
Increase oxygen delivery
Modify risk factors
How can you reduce O2 demands in angina?
Reduce hypertension
Reduce heart filling pressure/dilate coronary vessels
Emergency Tx: GTN
What medication can be used to reduce hypertension?
Diuretics
Ca Channel agonists
ACE inhibitors
Beta blockers
What medications can be used to reduce heart filling pressure/dilate coronary vessels?
Nitrates
What can be done to increase oxygen delivery?
Angioplasty
Coronary artery bypass graft (CABG)
What can be done to increase oxygen delivery?
Angioplasty
Coronary artery bypass graft (CABG)
What is the definition of peripheral vascular disease?
Angina of the tissues
What are the clinical features of peripheral vascular disease?
Ateroma in femoral/popilteal vessels
Claudication pain in limbs during exercise
Poor wound healing
Limited function
May lead to necrosis and gangrene
What are the clinical features of peripheral vascular disease?
Ateroma in femoral/popilteal vessels
Claudication pain in limbs during exercise
Poor wound healing
Limited function
May lead to necrosis and gangrene
What is the definition of myocardial infarction?
Infarction of the coronary artery
What are the clinical features of a myocardial infarction?
Pain
Nausea
Sweaty
‘Going to die’
What are the investigations for a myocardial infarction?
History
ECG
Biomarkers (troponin)
What are the treatment options for a myocardial infarction?
Get patient to hospital
Analgesia
Aspirin
BLS if needed
Open blood flow by angioplasty/ stent (up to 3 hours) Thrombolysis (up to 6 hours)
Bypass obstruction: CABG, fem/pop bypass
Which medications are used for prevention of myocardial infarction?
Aspirin
Beta blockers
ACE inhibitors
What is Bradyarrhythmia?
Slowed heart rate
What is the investigation for bradyarrythmia?
Prolonged p-q interval on ECG
What is the treatment for Bradyarrythmia?
Cardiac pacemakers
What is tachyarrhythmia?
Increased heart rate
How does atrial tachycardia present on an ECG?
Narrow QRS
How does ventricular tachycardia present on an ECG?
Broad QRS
What are the risk factors of infective endocarditis?
Prosthetic heart valve
Congenital heart disease
Damaged heart valves
Previous endocarditis
What are the symptoms of infective endocarditis?
High temperature
Chills
Headache
Joint and muscle pain
What are the causes of infective endocarditis?
Bacteria enters system and adheres to damaged endothelium and microthrombi
What is the duke criteria for infective endocarditis diagnosis?
Positive blood cultures (3x over 24 hours)
Evidence of endocardia involvement
What is the treatment for infective endocarditis?
Antibiotics
What dental procedures put a patient at risk of bacteraemia?
Extractions
Periodontal therapy
Gingival surgery
Implants
What is the definition of heart failure?
Output of heart is incapable of meeting demands of tissue
What are the clinical features of left heart failure?
Lungs and systolic effects
Dysponea
Tachycardia
Low BP
What are the clinical features of right heart failure?
Venous pressure elevation
Swollen ankles
Aceites
Raised jugular vein pressure
Tender enlarged liver
Poor GI absorption
Pitting oedema
What are the causes of high output heart failure?
Demands of system increased beyond heart capacity
Anaemia
Thyrotoxicosis
What are the causes of low output heart failure?
Heart is failing and not strong enough to force blood around the body
Cardiac defect
What are the investigations for heart failure?
Blood test
ECG
What is the treatment for acute heart failure?
Emergency hospital management
Oxygen
Morphine
Frusemide (for fluid removal)
What is the treatment of chronic heart failure?
Community based management
Improve myocardial function (treat underlying disorders)
Reduce compensation effects
What is hypertension?
Increased blood pressure
What are the clinical features of hypertension?
Systolic >140mmHg
Diastolic >90mmHg
What are the clinical features of hypertension?
Systolic >140mmHg
Diastolic >90mmHg
What are the risk factors of hypertension?
Age
Race
Obesity
Stress
Drugs (steroids, oral contraceptives)
What are the causes of hypertension?
Environment
Genes
Gene and environment interactions
What are the investigations for hypertension?
3 separate measurements: sitting, rested
Urinalysis: serum biochemistry/lipids
ECG
What is the treatment for hypertension?
Modify risk factors
Single daily drug dose
What are the causes of valve disease?
Congenital abnormality
Rheumatic fever
Myocardial infarction
What is the treatment for valve disease?
Valve replacement
What are the features of a mechanical valve?
Longer life (up to 30 years)
Ticking noise
What are the features of a porcine valve?
Short life <10 years
Silent
What are the two components of respiration?
Ventilation
Gas exchange
What are the features of ventilation?
Airway patency
Active muscle
What are the features of gas exchange?
Adequate alveoli
No alveolar wall fibrosis
What is type1 respiratory failure?
Inadequate gas exchange
What is type 1 respiratory failure associated with?
Thickening of alveolar walls
Inadequate alveolar number
V-Q mismatch
What is a V-Q mismatch?
A mismatch between where air goes into lungs and blood going into lungs
What is type 2 respiratory failure?
Inadequate ventilation
What is the definition of asthma?
Reversible airflow obstruction
Bronchial hyper reactivity
What are the clinical features of asthma?
Cough
Wheeze
Shortness of breath
Diurnal variation
Difficulty breathing out
What are the triggers of asthma?
Infections
Environmental stimuli (dust, smoke, chemicals)
Cold air
What is the asthma triad?
- Bronchial smooth muscle constriction
- Bronchial smooth muscle oedema
- Excessive mucous secretion into airway lumen
What is the investigation for asthma?
Peak expiratory flow rate (PEFR) to track airway resistance
What are the 5 stages of treatment for asthma?
- Short acting b-agonist
- Low dose inhaled corticosteroid
- High dose inhaled corticosteroid
- Long acting b-agonist
- Adjuvant therapy
What are the adjuvant therapy options for asthma?
Regular montelukast
Pulsed oral steroid (prednisolone)
Biologic therapy
What is chronic obstructive pulmonary disease (COPD)?
Emphysema and chronic bronchitis
What is the risk factor of COPD?
Smoking
What are the symptoms of COPD?
Increased breathlessness
Persistent productive cough
Frequent chest infections
Persistent wheezing
What does type 1 COPD result in?
Hypoxaemia
What does type 2 COPD result in?
Hypercapnia
Ventilation failure
What is the PaO2 for type 1 COPD?
PaO2 <8.0 kPa
What is the PaCO2 for type 2 COPD?
PaCO2 >6.7 kPa
What are the investigations for COPD?
Spirometry
Chest x-ray
Blood test
What is the treatment for COPD?
Smoking cessation
Long acting bronchodilator
Inhaled steroid
Oxygen support
Pulmonary rehabilitation therapy
What is cystic fibrosis?
Inherited defect in cell chloride channels
What are the clinical features of cystic fibrosis?
Production of excess sticky mucous
What are the symptoms of cystic fibrosis?
Troublesome cough
Repeated chest infections
Prolonged diarrhoea
Poor weight gain
What can cystic fibrosis progress to?
Liver dysfunction
Osteoporosis
Diabetes
Reduced fertility
What mutation is associated with cystic fibrosis?
CFTR gene mutation
What are the different investigations for cystic fibrosis?
Prenatal screening: if sibling +ve
Perinatal testing: blood spot test on day 5 of life
Sweat test: suspected +ve, measures salt content of sweat
CTFR gene testing
What are the treatment options for cystic fibrosis?
Physiotherapy (10-60 mins/day: to remove mucous in lungs)
Medication:
Lungs: bronchodilators (open airways), antibiotics (chest infection), steroids (airway inflammation)
Digestive system: pancreatic enzyme replacement, nutritional supplements
CFTR modulators
Stem cell treatment
Exercise (for lung function and physical strength)
Transplantation (heart, lung)
What are the types of lung cancer?
Small cell or non-small cell
What are the symptoms of lung cancer?
Cough
Haemoptysis
Pneumonia
Metastasis (bone, liver brain)
Dysphagia
What are the causes of lung cancer?
Smoking
Genetics
Air pollution
What are the investigations for lung cancer?
Radiographs
Biopsy
Biomarkers
What are the treatment options for lung cancer?
mAbs
Platinum based doublet therapy
What is sleep apnoea?
Airway obstruction during sleep
What are the treatment options for sleep apnoea?
Mandíbular advancement appliance
Continuous positive airway pressure
Positional therapy
What are the symptoms of bowel cancer?
Anaemia
Rectal blood loss
What are the A B C D stages of bowel cancer?
A- submucosal (80% 5YS)
B- muscularis (65% 5YS)
C- lymph nodes (45% 5YS)
D- liver (5% 5YS)
What are the causes of bowel cancer?
Genetics- p53 (75%)
Ulcerative colitis
Intestinal polyps
Diet low in fibre and veg and high in fat and meat
What are the investigations for bowel cancer?
Screening - adults >50 every two years
Endoscopy if +ve screening
CT/MRI
Carcinoembryonic antigen
What are the treatment options for bowel cancer?
Surgery
Hepatic metastases
Radiotherapy
Chemotherapy
What is the definition for coeliac disease?
Sensitivity to alpha-gliaden component of gluten
What are the clinical features of coeliac disease?
Subtotal villus atrophy of the jejunum
What are the symptoms of coeliac disease?
Weightloss
Lassitude
Weakness
Abdominal swelling
Diarrhoea
Oral aphthae
Malabsorption of iron, folate, vit b12, fat
What are the risk factors of coeliac disease?
Family history
Environmental factors
Comorbidities
What are the investigations for coeliac disease?
Autoantibody tests (serum transglutaminase TTG, anti-gliadin/anti-endomyseal antibodies)
Jejunal biopsy
Faecal fat (increased due to malabsorption)
Haemantinics (low b12, folate, ferritin)
What are the investigations for coeliac disease?
Autoantibody tests (serum transglutaminase TTG, anti-gliadin/anti-endomyseal antibodies)
Jejunal biopsy
Faecal fat (increased due to malabsorption)
Haemantinics (low b12, folate, ferritin)
What is the treatment for coeliac disease?
Gluten free diet
What are the dental aspects of coeliac disease?
Oral ulcers and blisters due to malabsorption
What is pernicious anaemia?
Anaemia caused by vitamin b12 deficiency
What are the clinical features of pernicious anaemia?
Diarrhoea
Lightheaded
Loss of appetite
Shortness of breath
What are the causes of pernicious anaemia?
Lack of b12 in diet
Disease of gastric parietal cells (autoimmune)
Crohn’s disease
Bowel cancer
What are the investigations for coeliac disease?
Blood tests
Schilling test/serological markers
Biopsy
What is the treatment for pernicious anaemia?
Increase b12 in diet
Supplements
Vitamin b12 injections
What are the symptoms of Crohn’s disease?
Colonic disease: diarrhoea, abdominal pain, rectal bleeding
Small bowel disease
Orofacial granulamatosis
What are the ratios for Crohn’s disease in male/female and white/black
M>F
W>B
What are the features of Crohn’s disease?
Discontinuous
Rectum involved 50%
Anal fissures 75%
Ileum involved 30%
Mucosa cobbled and fissured
Non vascular
Serosa inflammed
What is the microscopic appearance of Crohn’s disease?
Transmural
Oedematous
Granulomas
What is the presentation of necrotising ulcerative gingivitis/periodontitis?
Marginal gingival ulceration with loss of interdental papillae
Grey sloughing on surface of ulcers
Halitosis
Pain
What are causative factors of NUG/NUP?
Anaerobic fusospirochatal bacteria
Smoking
Stress
What is used to treat NUG/NUP?
Metronidazole
What are the functions of the skin?
Anatomical barrier
Sensory input
Heat regulation
Stores liquids and water
Drug absorption and waste excretion
What is the impact of oily skin?
Increased sebaceous gland secretion
Increased bacterial colonisation
Increased spots and pimples
Skin is heavier and thicker
Increased pore blockage
What are comedones?
Black heads
Buildup of keratin and sebum
The pores oxidise leading to a black colour
What are bacterial infections that affect the skin?
Furuncles and carbuncles
Acne
Erysipelas
Impetigo
What is a group of furuncles called?
Carbuncle
What is a furuncle?
Infection of the skin leading to pus filled pockets
Red, painful and swollen
What bacteria causes furuncles?
Staphylococcus aureus
What does acne consist of?
Comedones, papeles, pustules, nodules and inflammatory cysts
What age groups are most commonly affected by acne’s?
13-18 years
25-40 years
What are some causes of acne?
Follicular sensitivity to testosterone
Propionibacteruym acne’s overgrowth
What five things can worsen acne?
Contraceptives
Greasy skin cleansers
Systemic steroid treatment
Anticonvulsants
Squeezing spots
What is the local management of acne?
Reduce excess skin oil
Antibacterial agents: benzoyl peroxide, retinoids, antibiotic lotions
What is the systemic management of acne?
Antibiotics; tetracycline based (minocylin)
Retinoids: isotretinoin
Hormone manipulation: anti androgens (cyproterone)
What bacteria causes erysipelas?
Streptococcus pyogenes
What do erysipelas present as?
Defined, sharp raised border; may blister and peel
Systemic symptoms: fever, rigors
What is the management of erysipelas?
Systemic antibiotics
What is the progression of erysipelas?
Necrotising fasciitis
Septic shock
What is impetigo?
Highly infectious skin disease
Presents as red, crusty blisters
What bacteria is associated with impetigo?
Straphlococcal
Streptococcal
What is the management of impetigo?
Topical antibiotics
What are some examples of viral skin infections?
Herpes simplex
Shingles (herpes zoster)
Mulluscum contagiosum
Warts
Measles
Rubella
Fifth disease
Hand foot and mouth
What is herpes simplex virus activated by?
Trauma
Physical
Chemical
UV
Stress
What is the management of herpes simplex virus?
Aciclovir
What is the cause of shingles?
Recurrent herpes zoster virus that affects single dermatones
What is the management of shingles?
High dose aciclovir
What is mulluscum contagiosum caused by?
Pox virus
Who is mostly affected by mulluscum contagiosum?
Infants and small children
Children with atopic eczema
Adults with HIV
What is the presentation of mulluscum contagiosum?
Clusters of small papules
What is the presentation of mulluscum contagiosum?
Clusters of small papules
What conditions are warts associated with?
HPV1-3
What is the treatment for warts?
Keratosis is
Cryosurgery
Excision
What are some examples of fungal skin infections?
Athletes foot (tines pedis)
Nail infections (oncycholysis)
Ringworm
Intertrigo
Pityriasis versicolour
What is the treatment for athletes foot?
Keep skin clean, dry and damage free
Antifungal/antibacterial cream: miconazole
What is onycholysis?
Associated with tinea unguium infection
Nail becomes malformed, thick and crumbly
What is ringworm in feet associated with?
Tinea cruris
What is ringworm in the body associated with?
Tinea corporis
What is ringworm in the scalp associated with?
Tinea capitius
What is intertrigo?
Fungal infection due to chafing
What is the treatment for intertrigo?
Topical antifungal
Clotrimazole
Miconazole
What is pityriasis versicolor caused by?
Pityrosporum orbiculare
Cradle cap
What is the presentation of pityriasis versicolor?
Patchy skin pigmentation
What is the treatment of pityriasis versicolour?
Topical or systemic antifungal
Topical ketoconazole (shampoo/wash)
Systemic itraconazole
What are two examples of skin infestations?
Scabies
Lice
What is scabies?
Infection with scabies mite (sarcoptes scabiei)
Burrow into skin
What is the presentation of scabies?
Itching
Rash
What is the treatment of scabies?
Chemical insectides:
Benzoyl benzoate
Permethrin
Malathion
What are the three types of lice and how are they transmitted?
Head, pubic, body
Transmitted by close contact and shared items
What is the treatment for lice?
Personal clothing and hygiene
Chemical insectides: permethrin, malathion, phenothrin
What are examples of inflammatory skin disease?
Eczema
Occupational dermatitis
Psoriasis
What is eczema?
Inflammation of skin
Itchy, dry, flaky
What are the types of eczema?
Atopic
Contact
Seborrhoeic
Discoid
Gravitational
What type of surfaces does eczema affect?
Flexor
What are the features of atopic eczema?
Develops in childhood
Improves with age and runs in families
Associated with hay fever and asthma
What are the features of contact eczema?
Adult onset
Contact with allergen
What are the features of seborrhoeic eczema?
Affects scalp and eyelashes
What are the features of gravitational eczema?
Related to poor circulation in legs
What are some triggers of eczema?
Stress
Menstruation
Illness
Weather
What is the management of eczema?
Cotton clothing
Emollients: oily and prevent the drying of irritated skin, apply after bath
Soap substitutes
Corticosteroids: remove inflammation and allow skin to return to normal
What is occupational dermatitis and how is it treated?
Reaction to an environmental agent
Results in a rash, immediately or 72 hours after
Treated with topical steroids and removal of stimuli
What is psoriasis?
Inflammatory skin disease affecting 2% pop
Dysregulated epidermal proliferation
What surfaces are affected by psoriasis?
Extensor surfaces
What are the treatments for psoriasis?
Emollients
Topical steroids
Tar
Dithranol
Vitamin A derivatives
PUVA (psoralen UV light A)
Systemic: methotrexate, cyclosporine, aitretin, inflixamab, etanercept
What are examples of blistering immunological skin conditions?
Pemphigoid
Pemphigus
Epidermolysis bullosa
What are some examples of immunological connective tissue diseases?
Scleroderma
Dermatomyositis
Raynaulds
How do immunological skin conditions lead to blisters?
Auto-antibodies attack skin components causing a loss of cell-cell adhesion
‘Split’ forms in skin which fills with inflammatory exudate, forms vesicle/blister
What is pemphigoid?
Sub epithelial antibody attack
Leads to thick walled blisters: clear or blood filled
Can have oral and skin lesions
What is the treatment of pemphigoid?
Steroids or steroid sparing drugs
What does pemphigus affect?
Affects mucosa and skin
What are the signs and symptoms of denture induced stomatitis?
Inflammed mucosa
Burning sensation
Discomfort
Bad taset
What are the types of dementia?
Alzheimers
Vascular
Dementia with Lewy bodies
Fronto temporal
Korsakoff syndtome
What are the signs of late stage dementia?
Unaware of time and place
Difficulty in recognising faces
Increased need for self care help
Difficulty walking
Behaviour changes
What are examples of cognitive tests for dementia?
Mini Mental State Exam
Blessed Dementia Scale
Montreal Cognitive Assessment
Single test: clock draw, delayed word recall, category fluency
What are the risk factors for head and neck cancer?
Smoking
Oral Hygiene
Alcohol
Betel chewing
What is a stroke?
An acute focal neurological deficit due to cerebrovascular disease
What are the risk factors for stroke?
Smoking
Alcohol
Hypertension
Hyperlipodemia
What are the types of stroke?
Haemorrhage
Infarction
Embolic
What are the signs/symptoms of stoke?
Face drooping
Arm weakness
Speech difficulties
What are the methods of stroke prevention?
Antiplatelets (aspirin)
Statins (reduce cholesterol)
Stop smoking
What are the complications of stroke?
Sensory/motor loss
Dysphagia
Dysphonia
Cognitive impairment
What is epilepsy?
Recurrent seizures associates with reduced GABA levels
What are the types of epilepsy?
Generalised tonic-clonic seizures
Partial/Focal seizures
Myoclonic seizures
Tonic seizures
Atonic seizures
What is an aura?
Abnormal sensation that a seizure may occur
What is tonic associated with?
Muscle tensing
What is clonic associated with?
Muscle jerking
What is a post-ictal period?
Post seizure
Person is confused, tired, irritable and low
How does a partial/focal seizure present?
Occurs in isolated areas
Affects hearing, speech, memory and emotions
Awake during simple, Unconscious during complex
Symptoms: deja vu, strange smell/tastes, unusual emotions/behaviours
What is an acute febrile convulsion?
A fit or seizure occurring in children 6 months - 6 years when they have a high fever
What are the causes of epilepsy?
Idiopathic
CNS disease
Trauma
What are the precipitators of epilepsy?
Illness
Stress
Fatigue
What is the treatment for epilepsy?
Anti-convulsants
Anti-epileptics
What is the emergency treatment for epilepsy?
Protect head, clear area
Give O2
>5minutes: buccal midazolam
Post-seizure reassurance
What information should you gather in a fit history?
Last 3 fits
Medications and compliance
When fits are most likely
What is status epilepticus?
Single epileptic seizures lasting more than 5 minutes or 2 or more within a 5 minute period
What is multiple sclerosis?
Progressive demyelination of axons leading to reduced nerve conductivity
How does multiple sclerosis present?
Intention tremor
Muscle weakness
Paraesthesia
Visual disturbance
What is motor neurone disease?
Degeneration of spinal cord affecting bulbar motor nuclei
What are the tests for bleeding disorders?
Prothrombin test
Platelet count
Activated partial prothrombin time
Thrombin time
What drugs are associated with xerostomia?
Benzodiazepines
Antidiuretics
Antidepressants
Anticholinergics
What is the definition of delusion?
False, fixed beliefs which dominate the person’s mind and are contrary to education and culture
What are the dental implications of alcohol use disorder?
Xerostomia
Poor oral hygiene
Erosion and toothier
Increased caries risk
What is schizophrenia?
Encompasses a number of symptoms associated with significant alterations to a person’s perception, thoughts, moods and behaviour
What are the dental implications of schizophrenia?
Hypersalivation
Tardive Dyskinesia
Xerostomia
Increased oral cancer risk
What is tardive dyskinesia most commonly caused by?
Typical antipsychotics
What are the side effects of atypical antipsychotic clozapine?
Agranulocytosis
Neutropenia
Hypersalivation
Plasma levels can be influenced by tobacco withdrawal
What are the dental implications of cannabis use?
Increased dietary carbohydrates
Can induce tachycardia and widespread vasodilation
Use can be a contraindication to dentist led sedation
Xerostomia
What is the safest LA to use on patients with advanced liver disease?
Articaine