Y4 zero to finals mix Flashcards
Gram positive cocci
Staphylococcus StreptococcusEnterococcus
Gram positive rods
Corny mike’s list of basic cars
CorneybacteriaMycobacteriaListeria BacillusNocardia
Gram positive anaerobes
CLAPClostridiumLactobaccilus Actinomyces Propionibacterium
Abx inhibit cell wall synthesis
With beta-lactam ring (penicillin, carbapenem, cephalosporin)Without beta-lactam ring(Vancomycin, teicoplanin)
Abx inhibiting folic acid metabolism
Sulfamethoxazole and Trimethoprim block formation of folic acid Co-trimoxazole is a combination of the two
Abx inhibit protein synthesis (target ribosome)
Macrolides (erythromycin, clarithromycin, azithromycin)ClindamycinTetracyclinesChloramphenicol
Unusual chest infection organisms
Moraxella catarrhalis (in immunicompromised with chronic Lung disease) Pseudomonas auerginosa (CF) Staphylococcus aureus (CF)
Most common UTI bacteria
E. coli| Gram -ve, anaerobic, rod shaped
Chest infection 1st line
Amoxicillin
UTI 1st line
Trimethoprim| Nitrofurantoin
UTI in pregnancy
7d abx 1st Nitrofurantoin (do not give in 3rd trimester - haemolytic anaemia)2nd amoxicillintrimethoprim (do not give in 1st or anti-epileptics as has ANTI FOLATE effect)
Cellulitis and golden crust?
Staph aureus infection
Cellulitis tx 1st line
Flucloxacillin
Centor criteria
<3 not bacterial tonsilitisFever >38*CTonsillar exudatesAbsence of coughTender lymph nodes
Bacterial tobsilitis 1st line
Penicilin V /phenoxymethylpenicillin 10days
Otitis media 1st line
Amoxicilin| But (erythronycin, clarithromycin if penicillin Allergy)
Sinusitis management
Pencilin V/ phenoxymethylpenicillin 5daysNo improvement after 10 days: 2 weeks of high dose steroid nasal sprayNo improvement after 10 days + likely bacterial cause: Abx
Septic arthritis tx
1st flucloxacillin + rifampicin| 2nd vancomycin + rifampicin (joint replacement or penicillin allergy)
Influenza treatment
Oral oseltamivir 75mg 2x day for 5 days Or Inhaled zanamivir 10mg 2x day for 5 days(Treatment must start within 48h of symptoms) Same drugs but 1x day for 10 days in PEP
Gram negative diplococcus
Gonorrhoea| Neisseria meningitidis
Bacterial meningitis in adults
Neisseria meningitidis, strep pneumoniaeNeonates: group B strep
Lumbar puncture in babies
<1 month with fever 1-3 month fever and unwell <1 year unexplained fever and serious ilness
Kernig’s test
Pt on back, flexing hip and straightening knee - meninges stretch and -> resistance or pain
Brudzinski’s test
Pt flat on the back, chin to chest -> if meningitis then pt flexes hips
Community meningitis 1st line
Benzylpeniclinin IM/IV stat300mg <1y600mg 1-9y1200mg >10y
Meningitis hospital tx
<3m cefotaxime + amoxicillin>3m ceftriaxone+ Dexamethasone to prevent hearing loss and neuro damage 4x/4 days
Lumbar puncture results
Bacterial - cloudyViral / normal - clear Bacteria release proteins and use up glucose Viruses don’t use glucose and release little protein Neutrophils released for bacteria and lymphocytes released for virusesHigh WBC for both
TB staining
Ziehl Neelsen stain turns bacteria bright red and background blueTB grows acid-fast bacilli (rod shaped)
BCG vaccine
Intradermal infection of life attenuated TB- works against complicated TB- not as effective for pulmonary TB
Mantoux test
Injecting tuberculin into intradermal space| Check after 72h, >5mm is positive (previous vaccination, latent, or active TB)
Interferon gamma release assays
Confirms latent TB disease
Pts at risk of TB reactivation (w latent TB) tx
Isoniazid and rifampicin 3m| Isoniazid 6m
Acute TB tx
Rifampicin 6mIsoniazid 6mPyrazinamide 2mEthambutol 2m
Isoniazid side effects and tx
Peripheral neuropathy| - Pyridoxine (B6)
Rifampicin se
Red discolourstion of urnie and tears| Induces p450 so reduces effect of contraceptive pill
Pyrazinamide se
Hyperuricaemia (high uric acid and gout)
Ethambutol se
Colour blindness and reduced visual acuity
PCP in hiv
Co-trimoxazole prophylaxis in CD4 <200
PEP
<72h| Truvada (emtricitabine/ tenofovir) and Raltegravir 28days
Uncomplicated malaria treatment
MalaroneQuinine sulphateDoxycycline
IV tx for complicated malaria
Artesunate and quinine dihydrochloride
Antimalarials
Malarone (2d/during/1week)Mefloquine (2w/during/4week) - psychotic episodes and seizuresDoxycycline (2w/during/4week) - Abx so thrush, diarrhoea
OA risk factors
Obesity AgeTraumaFemaleFamily history
OA X-ray
Loss of joint spaceOsteophytesSubarticular sclerosisSubchondral cysts
OA symptoms
Pain and stiffness worsened by activity
OA signs
Haberdens nodes DIPBouchards nodes PIPSquaring of the thumb
OA management
Weight loss, physioParacetamol + topical NSAIDAdd oral NSAID + PPIAdd codeine / morphine
RA genetics
HLA DR4 - RF positive pt| HLA DR1 - often present in RA
Antibodies in RA
RF| anti CCP
RA presentation
Symmetrical polyarthritis MCP and PIP jointsAtlantoaxial subluxationPain, swelling, stiffnessPain worse after rest, improves with activity
Signs in the hands RA
Boggy feelingZ shaped thumbSwan beck deformityBoutonnières deformity (flexor digitorum superficialis works)Ulnar deviation
Felty’s syndrome
RA, neutropenia, splenomegaly
DAS 28
Disease activity score Swollen jointsTender jointsESR/CRP result
RA DMARDs
1st mono: methotrexate, leflunomide, sulfasalazine, hydroxychloroquine2nd: 2 drugs3rd: methotrexate + biological therapy (TNF inhibitor - adalimumab, infliximab, etanercept)4rd: methotrexate + rituximab
Methotrexate SEs
Pulmonary fibrosis
Leflunomide se
Hypertension and peripheral neuropathy
Sulfasalazine se
Male infertility (reduced sperm count)
Hydroxychloroquine se
Nightmares and reduced visual acuity
Anti TNF se
Reactivation of TB and hep B
Rituximab
Night sweats and thrombocytopenia
Psoriatic arthritis signs
Nail pittingPsoriasis plaques on skinOnycholysis- nail separates from nail bedDactylitis ConjunctivitisPencil in cup appearance
Chlamydia vs| Gonorrhoea ->
Chlamydia -> Reactive arthritis| Gonorrhoea -> gonococcal septic arthritis
Reactive arthritis
Conjunctivitis, arthritis, balanitis
Seronegative spondyliarthropathy
HLA B27 geneAnkylosing spondylitisReactive arthritisPsoriatic arthritis
AS features
Sacroiliac and vertebral pain and stiffnessVertebral fracturesPain worse at night Morning stiffness, gets better throughout the dayStiffness worse with rest and better with movement
AS associations
AnaemiaAnterior uveitis Aortitis Heart block Pulmonary fibrosis
X ray changes in AS
Bamboo spine Squaring of vertebral bodiesSubchondral sclerosisFusion of joints Syndesmophytes
AS treatment
Nsaids 2-4weeks then change if no improvementSteroidsAnti TNF (etanercept)Monoclonal antibody against TNF (infliximab, adalimumab)
SLE signs
Photosensitive malar rash| Worse with sunlight
SLE investigations
C3 and C4 decreased in active diseaseCRP and ESR raised in active inflammationIncreased PCR in lupus nephritis
SLE antibodies
ANA| anti ds DNA (increased with disease activity)
Anti Smith
specific to SLE
Sensitivity
How many/% ill people had positive result
Specificity
What % of healthy people had negative result
Anti centromere
Limited cutaneous systemic sclerosis
Anti Ro and Anti La
Sjorgen’s syndrome
Anti Scl 70
Systemic sclerosis
Anti Jo 1
Polymyositis
SLE treatment
NSAIDsSteroids (prednisolone) Hydroxychloroquine (mild SLE 1st line)Biological therapies: rituximab, belimumab
Systemic sclerosis
Hardening of the skin| Fibrotic connective tissue disease
Limited cutaneous systemic sclerosis antibodies
Anti Scl 70| Anti centromere
Limited cutaneous systemic sclerosis features
CalcinosisRaynuaurd phenomenonEsophageal dysmotilitySclerodactylyTelangectasia
Diffuse cutaneous systemic sclerosis antibodies
Anti Scl 70
Diffuse cutaneous systemic sclerosis symptoms
CREST+ CV problems+ lung problems + kidney problems
Polymyalgia rheumatica
2 weeks ofBilateral shoulder pain, pelvic girdle painWorse with movementWakes up from sleepAt least 45min stiffness in the morning
Polymyalgia rheumatica tx
15mg prednisolone /dayUntil symptoms settle (3-4 weeks)Then 12.5mg for 3 weeks10mg for 4-6 weeksReduce by 1mg every 4-8 weeks
Giant cell arteritis risk
Vision loss
Temporal artery biopsy findings in giant cell arteritis
Multinucleated giant cells| Also investigations: raised ESR, CRP, hypoechoic halo on duplex ultrasound
Giant cell arteritis tx
40-60mg prednisolone/day| also 75mg aspirin daily
Polymyositis and /dermatomyositis+ diagnosis+tx
Chronic muscle inflammation /+ skin involvementRaised CKCorticosteroids
DermatoMyositis signs
Gottron lesions (knuckle hardening)Photosensitive rash on the back and neckCalcium deposits in subcut tissue
Polymyositis antibodies
Anti Jo 1
Dermatomyositis antibodies
Anti Mi 2| ANA
Antiphospholipid syndrome antibodies
Lupus anticoagulantAnticardioliptin antibodiesAnti beta 2 glycoprotein I antibodies
Libmann-Sacks endocarditis
Non bacterial endocarditis with vegetations on mitral valve, SLE and antiphospholipid association
Livedo reticularis
Purple lace like rash with mottled appearance to the skin
Sjorgen’s Syndrome
Autoimmune condition affecting exocrine glands| -dry mucous membranes, dry mouth, eyes, vagina
Secondary Sjorgen’s
When condition is related to SLE or rheumatoid arthritis
Sjorgen’s antibodies
Anti Ro| Anti La
Schirmer test
Tears should travel 15mm in healthy adult| 10mm is significant
Sjorgen’s syndrome tx
Artificial saliva, tearsVaginal lubricantsHydroxychloroquine stops disease progression
Vasculitis markers
ESR and CRP raised| Anti neutrophil cytoplasmic antibody ANCA
pANCA
peri Nuclear anti-neutrophil cytoplasmicAnti-PR3Microscopic polyangitis, churg-Strauss
cANCA
Wegener’s granulomatosis
Vasculitis treatment
Steroids,| Immunosuppressants (cyclophosphamide, methrotrexate, azathioprine)
Henoch Schonlein Purpura
IgA Vasculitis Purpuric rash in lower limbs and buttocks- purpura- joint pain- abdominal pain- renal involvement
Wegener’s polyangitis
Respiratory track and kidney involvement EpistaxisHearing loss and sinusitisSaddle shaped nose due to perforated septum
Kawasaki disease (medium vessel Vasculitis)
CRASH AND BURNConjunctivitisRashAdenopathy /LymphadenopathyStrawberry tongueHands and feet skin peelingFever >5d
Kawasaki disease complication
Coronary artery aneurysm
Behcet disease gene
HLA B51 (prognostic of severe disease)
Behcet disease features
Oral and genital ulcers + skin inflammation, uveitis, muscle stiffness, GI ulceration, veins - Budd chiari syndrome, DVT, pulmonary artery aneurysm)
Pathergy test
For Behcet disease Tests for skin hypersensitivity Skin subcut abrasion, reviewed 24-48h later, >5mm weal is positive
Behçet’s disease tx
Colchicine for inflammationImmunosuppressant azathioprineTopical (bethamethasone) and systemic (prednisolone) steroids
Gout aspirate features
No bacteriaNeedle shaped crystalsNegative birefringent Monosodium urate
Gout X ray
Sclerotic boarders with overhanging edges| Punched out erosions
Gouty throphi
Subcut deposits of uric acid
Gout mx
Acute: NSAID, colchicine, steroid
Colchicine se
Diarrhoea -given in pts who can’t use NSAID
Gout prophylaxis
Allopurinol, reduces uric acid levels
Pseudogout
Calcium pyrophosphate crystals / chondrocalcinosis
Pseudogout joint aspirate
No bacteria Calcium pyrophospahte crystalsRhomboid shapedPositive birefringent
Pseudogout on X ray
Chondrocalcinosis
Pseudogout tx
NSAID, colchicine, steroids| +- joint washout
Risk factors for osteoporosis
Old ageFemaleLow BMILow activity/ mobilityAlcohol and smokingRheumatoid arthritisLong term corticosteroid usePost menopause (oestrogen is protective)
FRAX tool
Prediction of fragility fracture in 10years| Age, BMI, smoking, alcohol, co-morbidities, family history
Osteoporosis tx
Bisphosphonates (upright, empty stomach, 30 min before eating)- alendronate 75mg/week- risedronate 35mg/week- zolendronic acid 5mg/ year IV
Osteomalacia
Defect in bone mineralisation due to insufficient vit D| If in children before growth plate close - rickets
Osteomalacia pathology
Low vit Dcauses low Ca and PO42* hyperparathyroidismReabsorption of Ca from bones (causing soft bones)
Investigation for vit D
<25 - vit D deficiency 25-50 insufficient >75 optimal
Osteomalacia tx
Vit D 50. 000 1x weekly (6w)20. 000 2x weekly (7w)4. 000 daily (10w)Maintenance 800 daily
Paget’s disease
Excessive bone turnover (formation and reabsorption due to increased osteoblast and osteoclast activity)Forms high density sclerotic and low density lytic patches.
Paget’s disease biochemistry
Raised ALPNormal Ca Normal PO4
Paget’s X ray
Cotton wool skull| V shaped defect in long bones
Paget’s disease treatment
Bisphosphonates + vit D and Ca supplementation on bisphosphonates NSAIDs for pain
ABCD2 score
48h risk of stroke post TIAAge >60 (1)BP >140/90 (1)Clinical features - dysphasia (1), +weakness (2)Durstion >60min (2), 10-60min (1)Diabetes (1)
Stroke management
Aspirin 300mg/ day for 2 weeks| Thrombolysis with alteplase within 4.5h (after CT)
TIA mx
Aspirin 300mg + secondsry prevention:Clopidogrel 75mg 1x or dypiridamole 200mg 2xAtorvastatin 80mg
Crescendo TIA follow up
Within 24h specialist assessment| ABCD2 >3 24h assessment, otherwise 1 week assessment
GCS
Eyes: none, Pain, speech, spontVerbal: None, sounds, words, confused, orientalnedMotor: none, Extends, abnormal flexion, flexion, localises Pain, obeys commands
Subdural haemorrhage location
Bridging veins| Between dura and arachnoid
Subdural haemorrhage on CT
crescent shape| Crosses cranial sutures
Subdural haemorrhage risk factors
Elderly and alcoholic
Extradural haemorrhage location
Middle menigeal artery Temporal/parietal regionAssoc w fx of temporal bone
Extradural haemorrhage CT
Biconvex| Does not cross cranial sutures
Extradural haemorrhage hx
Young ptOngoing headache Period of improvement and rapid decline in consciousness
Subarachnoid haemorrhage location
Pia matter and arachnoid membrane
Subarachnoid haemorrhage vessel
Cerebral aneurysm rupture
Subarachnoid haemorrhage hx
Occipital headache (strenous activity)Thunderclap headacheNeck stiffnessPhotophobiaHit on the back of head
Subarachnoid headache associations
Cocaine useSickle cell anaemiaAlcoholSmokingHTN
Ix in subarachnoid haemorrhage
CT hyperattenuation| CSF red cell count and xantochromia
Subarachnoid haemorrhage mx
Coiling or clipping of the aneurysm Nimodipine for vasospasmLumbar puncture and shunt to treat hydrocephalus
CN VI palsy in MS
Internuclear ophthalmoplegia| Conjugate lateral gaze disorder
MS lumbar puncture
Oligoclonal bands
Optic neuritis features
Central scotomaPainReduced colour visionRAPD
MS relapse treatment
Methylprednisolone 500mg PO 1x for 5 days| Or 1g IV daily 3-5d
Lower motor neurone disease
Muscle wastingReduced toneFasciculationsReduced reflexes
Upper motor neurone disease
Increased toneBrisk reflexesUpgoing plantars
Management of motor neurone disease
Riluzole
Parkinson’s triad
Resting tremorRigidityBradykinesia
Parkinson’s features
Ansomnia Shuffling gait Hypomimia Asymmetrical tremor 4-6hzWorse at restImproves with movementNo change with alcohol
Levodopa
Synthetic dopamine
Peripheral decarboxylase inhibitors
Benserazide| Carbidopa
Too high dopamine se
Dskinesia (excessive motor activity)
Dystonia
Abnormal postures and exaggerated movements
Chorea
Abnormal involuntary movements (jerking and random)
Athetosis
Involuntary twisting in hands feet fingers
COMT inhibitor
Inhibits levodopa metabolism in body and brain| Slows levodopa breakdown
Dopamine agonists
SE pulmonary fibrosisBromocryptinePergolideCarbergoline
MAO B Inhibitors
Block enzyme breaking down dopamine neurotransmitterSelegiline Rasagiline
Benign essential tremor tx
Propanolol (non selective beta blocker)| Primidone (anti epileptic)
Tonic clinic seizure
Prolonged post ictalLoss of consciousness ConfusedDrowsyIncontinence
Focal seizures characteristics
Hearing speech memoryDeja vu Autopilot (strange things, don’t remember)Hallucinations
Focal seizure location
Temporal
Infantile spasms
West syndrome full body spasmsTx prednisolone and vigabatrin
Seizure treatment
(Everything but focal)Sodium valproate Lamotrigine/carbamazepineFocal Lamotrigine/carbamazepineSodium valproate/levetiracetam
Absence Seizure tx
Sodium valproate or Ethosuximide
Carbamazepine se
AgranulocytosisP450 inducer (eg cocp)
Phenytoin se
Folate and vit D deficiency Osteomalacia Megaloblastic anaemia
Status epileptic is mx in community
Buccal midazolam| Rectal diazepam
Status epilepticus mx in hospital
O2Check blood glucose IV accessIV lorazepam 4mg (repeat after 10min)IV phenobarbital or phenytoin
Trigeminal neuralgia tx
Carbamazepine
Neuropathic pain tx
(1 at a time, if doesn’t work switch, try all 4)AmitryptylineDuloxetineGabapentinPregabalin
Bell’s palsy tx
Prednisolone (start within 72h)50mg for 10days60mg for 5 days and 5days reducing regime (10a day)
Ramsay Hunt Syndrome
Herpes zoster virus| 72h prednisolone, acyclovir
Bilateral acoustic neuromas association
Neurofibromatosis type 2
Acoustic neuroma symptoms
Hearing lossTinnitus Balance problems
Bromocriptine
Block prolactin secreting tumours
Somatostatin analogue (ocreotide)
Block growth hormone secreting tumours
Huntingtons genetics
ADOn chromosome 4Trinuckeotide repeat disorder mutation in HTT geneAnticipation
What is anticipation
Successive generation have more repeats of the gene- earlier onset age- increased severity of disease
Drugs to manage huntingtons symptoms
Antipsychotic (olanzapine)Benzodiazepines (diazepam)Dopamine depleting (tetrabenazine)
Myasthenia gravis antibodies
Acetylcholine receptor antibodies 85%Muscle specific kinase antibodies 10% (make up the receptor)LRP4 abs (5%)
Edrophonium test
IV 10mg of endrophonium chloride / neostigmineStops breakdown of acetylcholine and relieves weaknessAtropine 0.6mg IV to reverse
Myasthenia gravis treatment
Acetylcholinedterase inhibitors (neostigmine, pyridostigmine)Or monoclonal:Rituximab, eculizumab
Myasthenic crisis tx
IVIG| Plasma exchange
Lambert Eaton associations
Small cell lung cancerProximal muscles affectedDiplopia, ptosis, dysphagia
Lambert Eaton treatment
Amifampridine - allows more Ach to be released in junction synapses
Charcot Marie tooth genetics
AD
Charcot Marie tooth characteristics
High foot arch/ pes cavusInverted champagne bottle legsLoss of ankle dorsiflexionWeak handsReduced muscle tone Peripheral neuropathy
Gillian barre triggers
NAME?