FINALS Flashcards
MI complication differentials, Px + Mx. Acute HF, cardiogenic shock, pericarditis, LV wall rupture + aneurysm, ventricular septal rupture, papillary muscle rupture
Acute HF: no shock = acute LV failure, cardiac tamponade = LV free wall rupture, pansystolic murmur = ventricular septal defect, systolic murmur = papillary muscle / mitral regurgitation
After 2w = LV aneurysm
Cardiogenic shock: LV infarction leading to pump failure (within hours), hypotension, tachycardia, cold peripheries + oliguria, raised JVP + pulmonary oedema; inotropes (noradrenaline, dobutamine), urgent revascularisation
Acute LV failure + pulmonary oedema: absence of shock, first 48h, dyspnea, bibasal crackles, pink frothy sputum, S3 gallop; oxygen +/- NIV, IV furosemide, GTN unless hypotensive
Pericarditis: common for transmural MI within first 48h (10%) - typical Px. Dresslers: AI pathology, 2-6w following, fever, pleuritic pain, pericardial effusion; raised ESR + treat with NSAIDs, colchicine prophylaxis
LV free wall rupture: acute HF secondary to cardiac tamponade; raised JVP, pulsus paradoxus, hypotension + shock, 1-2w; emergency pericardiocentesis, surgery
LV aneurysm: LV failure, persistent ST elevation > 2w following, risk of embolism + stroke; anticoagulation +/- surgery
Ventricular septal rupture (L-R shunt): acute HF, loud pansystolic murmur, first week; urgent surgical repair
Papillary muscle rupture - acute mitral regurgitation (inferior / posterior): acute HF + pulmonary edema, systolic murmur at apex; vasodilators, emergency valve surgery
How to differentiate between types of AKI
Urinary + serum sodium / urea + creatinine / osmolality, response to fluid bolus
Pre (perceives as needing to retain water / Na / urea): urine Na < 20, FeNa < 1%, Fe urea < 35%. Good response to fluid bolus
Intrinsic (damage prevents reabsorption): urine Na > 30, FeNa > 1%, Fe urea > 35%. No response to fluid bolus
Renal US: normal = intrinsic, abnormal = post (large = hydronephrosis, bilateral small = CKD)
Urinalysis (intrinsic): renal tubular cells / casts - acute tubular necrosis; eosinophils / WC casts - acute interstitial nephritis; RBC casts / proteinuria - glomerulonephritis / vasculitis / myeloma
Intrinsic AKI differentials, Px, Ix, Mx
Acute tubular necrosis: cause (hypotension / ischaemia / fluid depletion / nephrotoxins), AKI (acute), hypotension, tachycardia
Ischaemia / toxins cause tubular cell death, forms casts and obstruct tubules
Ix: AKI, urea:creatinine > 10:1, urinary sodium >40, brown muddy casts
Mx: supportive (fluids, stop nephrotoxic drugs, treat cause); severe acidosis / hyperkalaemia / uraemia - haemodialysis / renal replacement therapy
Acute interstitial nephritis: AKI (days / weeks), oliguria; systemic - fever, rash, arthralgia, eosinophilia, myalgia, pulmonary infiltrates / effusion
Immune mediated (type IV hypersensitivity) with a trigger: drugs (antibiotics (penicillins, cephalosporins), NSAIDs, PPI), infection, systemic disease
Tubular injury: low proteinuria, sterile pyuria (leukocytes), eosinophiluria
Ix: bloods: anaemia, leukocytosis, AKI; urinalysis: proteinuria / haematuria, white cell casts, eosinophils
Mx: find and stop cause, fluids + monitor electrolytes / urea, pred in severe, dialysis
Immune Nephritis differentials, Px, Ix, Mx
IgA nephropathy: recurrent macroscopic haematuria, recent (2d) mucosal infections (URTI, gastroenteritis)
Pathophysiology not fully understood, mesangial deposition of IgA immune complexes (overlap with HSP)
Ix: urinalysis (haematuria, small proteinuria, raised complement levels), biopsy for diagnosis
Mx: regular BP + renal function monitoring, ACE / ARB (BP control, proteinuria reduction), steroids for rapidly progressive / severe
Post streptococcal glomerulonephritis: GAS infection (1-3w post pharyngitis, 3-6w post skin), acute nephritic syndrome (oedema, hypertension, gross haematuria - dark urine), oliguria
Immune response to GAS, antigens in glomerular membrane, antibodies form complexes - complement activation and inflammation
Ix: urinalysis (haematuria + dysmorphic RBC +/- RBC casts, mild proteinuria), renal biopsy definitive, GAS antibodies can be helpful
Mx: no specific cure, monitor BP + renal function, loop diuretics, ACE for BP if needed, antibiotics if infection still present
(Lupus nephritis: proteinuria, renal dysfunction, HTN, oedema, haematuria
Severe manifestation of SLE, immune complex deposition
Ix: urinalysis (protein, dysmorphic RBC + casts)
Mx: ACE / ARB, steroids +/- azathioprine / cyclophosphamide)
Also anti-GBM, TTP, ANCA
How to differentiate between types of jaundice
Px: change to urine / stools + pruritus (post, maybe hepatic), hepatomegaly / signs of liver disease (hepatic), pain (hepatic, post), bruising / splenomegaly (pre)
Painless classically pancreatic cancer
Ix: LFTs (pre isolated bilirubin, ALT / AST hepatic, ALP / GGT post), urine (bilirubin absent in pre, urobilinogen much higher in pre + usually absent in post), coagulation (usually only affected in hepatic)
Types of jaundice, differentiating Px + Ix, common causes
Prehepatic - unconjugated (no dark urine / pale stools), hemolysis or impaired bilirubin uptake
Normal LFTs, anaemia / haemolysis (splenomegaly, reticulocytosis), raised urobilinogen, no bilirubin in urine. Blood film + FBC
AI haemolytic anaemia (SLE), hereditary spherocytosis, G6PD, sickle cell, thalassaemia, Gilbert’s
Hepatic - mixed un / conjugated, damage to liver cells, impaired conjugation, uptake or secretion
ALT + AST elevated, bilirubin in urine, urobilinogen variable; usually systemic upset. Biopy
Viral hepatitis, alcohol associated liver disease, metabolic dysfunction associated steatotic liver disease / metabolic associated steatohepatitis, drug induced liver injury, AI hepatitis, hereditary, PBC
Posthepatic - conjugated (water soluble) (dark urine and pale stools, pruritus), blockage of bile flow leading to accumulation
ALP + GGT > ALT + AST, bilirubin present in urine, urobilinogen reduced, dilated ducts / evidence of obstruction. US / MRCP
Gallstones, pancreatic head cancer, cholangiocarcinoma, PSC
Sudden vision loss Px, fundoscopy, Mx
Central retinal artery occlusion: onset in seconds, painless, no prior changes, RAPD. Atherosclerosis + RF. Fundoscopy: cherry red spot, white ischaemic retinal areas
Ocular massage, intra arterial urokinase, IV acetazolamide / paracentesis (steroids if temporal A)
Most commonly due to carotid atherosclerosis - carotid US, sometime temporal arteritis
Central retinal vein occlusion: onset in seconds, painless, no prior changes, RAPD. Fundoscopy: macular oedema + optic nerve head oedema, flame haemorrhages (looks like pizza), cotton wool spots, venous tortuosity
Ischaemia / neovascularisation - urgent panretinal photocoagulation; intravitreal anti-VEGF
Anterior ischaemic optic neuropathy (temporal arteritis): subacute / sudden painless, temporal arteritis (headache), RAPD. Fundoscopy: swollen + pale optic disc
High dose IV methylprednisolone, low dose aspirin
Vasculitis causes ischaemia of posterior ciliary arteries supplying optic nerve head
Vitreous haemorrhage: painless, floaters, red reflex diminished. Fundoscopy: blocked by blood. Many causes
Mx: treat cause, vitrectomy (remove humour)
Posterior vitreous detachment: floaters + flashes of light, cobweb across vision. Fundoscopy: Weiss ring (circular floater); optical coherence tomography + B-scan US
Mx: will resolve in 6m; referral to ophthalmology to exclude retinal tear / detachment
Retinal detachment: floaters + flashes, progresses from periphery (shadow coming down) +/- macular involvement, red reflex lost: Fundoscopy: retinal folds wrinkled / looks like has come off, pale / opaque
Mx: urgent referral for surgery / laser / cryotherapy
Upper vs lower zone fibrosis causes
Upper = TSAR workers G
Upper = TB, sarcoidosis, ank spon, radiation, workers (pneumoconiosis + silicosis, hypersensitivity pneumonitis), granulomas (eosinophilic, langerhans histiocytosis)
Lower = RAID-man
Rheumatological (RA, scleroderma, SLE, Sjorgren’s), asbestosis, idiopathic PF, drugs (methotrexate, amiodarone, nitrofurantoin)
Crohn’s vs ulcerative colitis
Crohn’s: mouth to anus, skip lesions, all layers, deep ulcers, cobblestone appearance
Increased goblet cells, granulomas, strictures (Kantor’s string), proximal dilation
Gallstones + oxalate renal stones (decreased bile reabsorption)
Crohn’s NEST: no blood / mucus, entire GI tract, skip lesions, transmural inflammation (terminal ileum most common)
Gs: (whole) GI tract, granulomas, goblet cells increased, gallstones
UC: rectum start + never past ileocaecal valve, continuous, not past submucosa, widespread ulceration with preservation of adjacent mucosa (pseudopolyps)
Depletion of goblet cells, crypt abscesses, loss of haustrations, drainpipe (narrow + short) colon
Smoking protective, primary sclerosing cholangitis
You see (UC) CLOSEUP: continuous inflammation, limited, only superficial, smoking protective, excrete blood + mucus, use aminosalicylates, primary sclerosing cholangitis
Cs: colon only, continuous (and superficial), crypt changes (abscesses, increased, shortened + branching), colorectal cancer + toxic megaColon
Sepsis: RF crireria, Mx, Ix for source
NICE red flag criteria: responsive only to voice / pain / unresponsive, acute confusion, systolic < 90 (or drop > 40), HR > 130, RR > 25, SpO2 < 92%, cyanosis, urine < 0.5ml/kg/h, lactate > 2, recent chemo
Mx: take blood cultures + lactate (VBG) + urine output, give broad spectrum Abx + 500ml fluid bolus + oxygen; BUFALO: blood cultures, urine, fluids, antibiotics, lactate, oxygen
Abx: piperacillin + tazobactam or cefuroxime. MRSA - add vancomycin, anaerobic - add metronidazole, resistant - meropenem, meningococcal - benzylpenicillin / cefotaxime
Ix (source of infection): urine dip + culture, CXR + sputum culture, swabs of relevant areas, ECG, LFTs; also echo, LP, abdo CT / US, line culture, BM
Most common sources: pneumonia, intraabdominal, UTI, skin / soft tissue, bacteraemia (line)
Mx for all ACS
All patients ECG (determine STEMI vs NSTEMI / unstable angina) + troponin (repeat at 6 + 12h)
STEMI: ST elevation in 2+ contiguous leads or new LBBB
Immediate Mx (MOONA): aspirin 300mg, oxygen if sats < 94%, nitrates (unless hypotensive), morphine if severe pain, IV ondansetron (prevent vomiting antiplatelets)
Mx of STEMI
First choice = PCI (12h of onset, 2h of when thrombolysis would be given); balloon + drug eluting stent
Aspirin + prasugrel (clopidogrel if already on anticoagulant) prior to surgery
Radial access preferred - unfractionated heparin + bailout glycoprotein inhibitor (eptifibatide)
If cardiogenic shock - coronary angiogram first
PCI not available - thrombolysis (as long as not contraindicated)
Alteplase with antithrombin (enoxaparin / heparin)
Aspirin + ticagrelor (clopidogrel bleeding risk) immediately following
ECG 60-90 following, persistent ST elevation - PCI
Contraindications: Hx of intracranial haemorrhage / CNS damage / AV malformation, stroke in last 6m, major trauma / surgery / GI bleed in last month, bleeding disorder, aortic dissection
If over 12h and still Sx or ECG changes - consider PCI
Mx of NSTEMI
Risk assessment with GRACE score: age, HR, BP, cardiac Killip class, creatinine, cardiac arrest, ECG, troponin
< 3% low risk, > 3% needs intervention
Coronary angiogram: if unstable - immediate + heparin; within 72h otherwise + fondaparinux
PCI indicated in CA: heparin + ticagrelor (clopidogrel if bleeding risk)
Low risk: aspirin + ticagrelor / clopidogrel + fondaparinux
ACS secondary prevention
Aspirin indefinitely + ticagrelor / clopidogrel for 12m, ACE / ARB, BB (CCB), high dose statin
DAABS: dual antiplatelet (PPI), ace, beta blocker, statin
HF: eplerenone / spironolactone, dapagliflozin
Cardiac rehabilitation + lifestyle changes
Cardiac resus, Mx of shockable, non shockable, bradycardia
Shockable rhythms - ventricular fibrillation, pulseless ventricular tachycardia
Single shock (150-200J) followed by CPR for 2 mins then reassess rhythm and continue
If happens whilst monitored (coronary care unit) should start with 3 successive shocks
1mg IV adrenaline after 3rd shock then every 3-5 mins, 300mg amiodarone after 3rd + 150mg after 5th
Non shockable - pulseless electrical activity / asystole
Adrenaline 1mg immediately then every 3-5 mins, recheck rhythm every 2 mins
Bradycardia resus: shock, syncope, MI, HF; risk of asystole: recent asystole, Mobitz II / complete heart block with broad QRS, ventricular pause ? 3s
Atropine 500mcg IV and assess response; repeat to maximum 3mg (6 total), transcutaneous pacing, adrenaline 10mcg
Alternatives to adrenaline: isoprenaline, aminophylline, dopamine, glucagon if BB / CCB overdose
Transvenous pacing last line but need expert help first
Mx of tachycardias
Narrow complex (supraventricular): usually atrial in origin, anterograde conduction and polarisation through AV + his-purkinje
AV node reentry tachycardia, AV reentry tachycardia, atrial tachycardia due to foci (multiple = atrial flutter), AF. Px: typically abrupt onset / offset recurrent episodes
Vagal manoeuvres (valsalva, cold stimulus over face, carotid sinus massage) FL, adenosine (6mg - 12 - 18), failed - bolus verapamil
Long term: radio-frequency ablation, BB / CCB, SL flecainide / sotalol
Wide complex (ventricular): conduction through the ventricles (slower myocyte-myocyte) due to AV conduction / accessory pathway / ventricular origin
Monomorphic: amiodarone (flecainide, lidocaine), electrical cardioversion if drugs fail
Polymorphic (long QT, torsades): treat underlying cause, magnesium sulfate for TdP
Long QT syndrome (inherited / drugs / electrolytes) - fast chaotic beats, when triggered can cause blackouts (faint) and even cardiac arrest, need to be careful with drugs exaggerating. Beta blockers
Torsades de pointes - ventricular tachycardia, specific polymorphic ‘twisting’ ECG, prolonged QT (rf), can be caused by hypokalaemia / hypocalcaemia / antiarrhythmics
Long term: specialist referral, implantable cardioverter defibrillator, BB +/- amiodarone
Unstable (any type): immediate synchronised cardioversion under GA +/- CPR
Unstable: shock (hypotension, impaired consciousness), syncope, MI, HF
Mx of ischaemic stroke
Ix: CT head immediately to rule out haemorrhagic, diffusion weighted MRI for salvageable tissue, carotid doppler US
Mx: aspirin 300mg once haemorrhage ruled out, thrombolysis + thrombectomy if fit criteria
Also supportive Mx and VTE prophylaxis with intermittent pneumatic compression
Thrombolysis with alteplase: presents within 4.5h, 4.5-9h or within 9h of midpoint of sleep and evidence of salvageable tissue
Mechanical thrombectomy: within 6h and confirmed proximal anterior circulation, 6-24h if salvageable tissue; consider for proximal posterior circulation + salvageable
Secondary prevention: aspirin for 2w then clopidogrel lifelong (aspirin + dipyridamole), high dose statin
Also manage BP, DM, lifestyle
Carotid endarterectomy + stent if in carotid territory and stenosis > 50%
If AF: aspirin for 14d then return to DOAC
Mx of TIA
No longer time based; ischaemia without acute infarction
Ix: ECG + carotid imaging, referral to specialist for diffusion weighted MRI
Only CT if on anticoagulants / other diagnosis suspected
Mx: immediate aspirin 300mg and seen within 24h by stroke specialist (if presents after 7d seen within 7d)
Secondary prevention: clopidogrel (lifelong), high dose statin. (Carotid + AF like stroke)
Aspirin also given for first 21d by specialist if high risk of further events
Non acute asthma Ix + Mx
Ix (in order): FeNO > 50 / blood eosinophils, FEV1 increases > 12% / 200ml after bronchodilator, PEF variability > 20% over 2w, refer for bronchial challenge
Stepwise testing, once positive for one no need to do others
Mx: AIR (low dose ICS + formoterol) as needed, low dose MART (ICS + formoterol) daily + as needed, moderate dose MART; measure FeNO (or eosinophils) - raised trial adding LTRA / LAMA, not raised refer
Formoterol used as is fast and long acting
If severe Sx skip AIR straight to MART
Converting from old regime, go off ICS dose, low dose - low dose / moderate - moderate (ignore other drugs)
Acute asthma, Ix + classification, Mx + discharge
Ix: PEFR / FEV1, sats, ABG
Classification
Moderate: PEFR 50-75% predicted + no severe features
Severe: PEFR 33-50%, RR > 25, HR > 110, can’t complete sentences in one breath
Life threatening: PEFR <33%, SpO2 < 92%, PaO2 <8, PaCO2 rising, silent chest, cyanosis, reduced effort / exhaustion, new arrhythmia, reduced GCS, hypotension
Near fatal: PaCO2 >6 or need for NIV
Admission: all life threatening, severe if fails to respond to initial treatment
Mx: oxygen, salbutamol, 5d 50mg prednisolone
Not responding: neb ipratropium, neb magnesium sulphate, IV aminophylline, mechanical ventilation
Discharge: stable on discharge meds for >12h, inhaler technique checked, PEFR >75%. 40-50mg pred for 5 days
Paediatric asthma, Ix + Mx
Ix: FeNO (> 35) diagnostic, spirometry + bronchodilator reversibility, PEF variability. Still suspected - measure IgE and eosinophils, skin prick for dust mite allergy
Mx: paediatric low dose ICS + SABA BD. Decision then made about whether children / carers can adhere to MART therapy, always still with SABA
MART pathway: low dose, moderate dose, refer to specialist
Conventional: trial LTRA, low dose ICS / LABA (+/- LTRA), moderate dose ICS / LABA (+/- LTRA)
Mx under 5: 8-12w trial of low dose ICS with SABA BD, if Sx resolve can uptitrate, if they don’t refer
COPD Ix + stages, Mx, criteria for extra Mx
Ix: spirometry (FEV1/FVC < 0.7), CXR, FBC, U+Es, dyspnoea scale. HRCT for emphysema / bronchiectasis, echo for cor pulmonale, A1AT screening if <45 or non smokers
FEV1 shows GOLD stages: 1 >80%, 2 - 50-79%, 3 - 30-49%, 4 - <30%
MRC dyspnoea scale: 1 strenuous exercise, 2 walking uphill, 3 slightly on flat, 4 can’t walk on flat, 5 unable to leave house
Mx: SABA / SAMA (no SAMA with triple therapy) first line, determine whether steroid responsive (asthma features, high eosinophils, variation in FEV1 (>400ml) or peak flow (>20%)
Yes: LABA + ICS, LABA + ICS + LAMA (using combination inhalers where possible)
No: LABA + LAMA, LABA + LAMA + ICS
(SABA - salbutamol, SAMA - ipratropium, LABA (salmeterol), LAMA (tiotropium), LABA + ICS (fostair - beclometasone + formoterol), LABA + LAMA (anoro ellipta - umeclidinium + vilanterol). LABA + LAMA + ICS (trimbow - beclometasone, formoterol, glycopyrronium))
Smoking cessation, annual influenza vaccination, one off pneumococcal, pulmonary rehab
Long term oxygen therapy (only if stopped smoking) - severe (<30%), cyanosis, polycythaemia, peripheral oedema / raised JVP, sats <92% on room air, PO2 < 7.3
Rescue pack: prednisolone + antibiotic (amoxicillin / doxycycline)
Exacerbation in last year
Prophylactic azithromycin 3 times per week if already: no longer smokes, optimised Mx, pul rehab
4 exacerbations in last year - hospital admission at least once
Acute COPD exacerbation Px, bugs, Ix, Mx
Acute exacerbation: GOLD major sx: dyspnoea, increased sputum volume, increased sputum purulence. Minor: cough, wheeze, nasal discharge, sore, pyrexia
Haemophilus 50%, strep pneumoniae, moraxella, 30% viral
Ix: sats, ABG (respiratory acidosis, CO2 retention), CXR, ECG, FBC, U+Es, sputum culture, blood culture if systemic
Oxygen: venturi 24% 2-3L, 28% 4L, nasal cannulae 1-2L. NIV indicated (after 60m): pH < 7.35, pCO2 > 6.5, RR > 23. No improvement after 4h - mechanical ventilation
Regular inhalers / nebs, oral prednisolone 30mg for 5d, antibiotics if appropriate - (amoxicillin / clarithromycin). Abx for 2+ major (inc sputum purulence) / mechanical ventilation
Severe: IV theophylline, NIV, intubation + ventilation
Prior to discharge: measure spirometry / sats / ABG, optimise bronchodilators, arrange follow up
DKA Px, Ix, Mx
Px: polyuria + polydipsia, n+v, abdominal pain, acetone breath, dehydration + hypotension, altered consciousness, underlying trigger
Ix: blood glucose >11.1, blood ketones >3 (or urine ketones 2+), blood pH <7.3 +/- HCO3 < 15 (also check potassium)
Mx:
Fluid replacement always first step, 0.9% NaCl (usually 5-8L). If K is < 5.5 add 40 mmol K (KCl) after first infusion (senior review if < 3.5). Risk of cerebral oedema if done too quickly
Insulin: fixed rate 0.1 unit/kg/h. Once glucose < 14, 10% dextrose 125 ml/h as well as NaCl
Short acting insulin stopped, continue long acting
Resolution defined as pH > 7.3, serum ketones < 0.6, HCO3 > 15. If met and E+D switch back to sc insulin. Not met after 24h senior review