Schofield medicine SAQs Flashcards
2 later ECG changes post MI?
Pathological Q waves and inverted T waves
How long until you can drive post-MI?
Can’t drive for 4 weeks, no need to inform DVLA
Complications of coronary angiography?
Bleeding
Infx
MI
Stroke
Death
Symptoms apart from pain during episode of angina?
SOB
Sweating
Feeling faint/lightheaded
Blood tests for angina?
FBC for anaemia
TFTs for thyrotoxicosis
Glucose for diabetes
Investigations for angina?
ECG
ECHO
Coronary angiography
How does aspirin reduce the risk of coronary events?
Aspirin irreversibly binds to COX, preventing further production of TXA2, which then inhibits platelet aggregation.
Signs of acute pulmonary oedema?
Tachypnoea
Tachycardia
Raised JVP
Wheeze
Cyanosis
Fine lung crepitations
Drugs to treat pulmonary oedema?
Furosemide
GTN
Morphine
Oxygen
Give two ways to increase someone’s potassium medically?
Orally (e.g. sando-K)
IV (Add KCl to IV fluids)
Normal QRS interval?
<0.12s (<3 small squares)
ECG shows regular rhythm, rate 140bpm, broad QRS complex and occasional capture beat?
Ventricular tachycardia
What is a capture beat?
Normal QRS complex between VT complexes
Two drugs that may be used during V tacky?
Amiodarone
Lidocaine
Oxygen
Adrenaline
What system is used to classify the severity of heart failure?
New York Heart Association Classification
Symptoms of left ventricular failure?
Dyspnoea
Fatigue
Paroxysmal nocturnal dyspnoea
Orthopnoea
Wheeze
Cough
Pink, frothy sputum
Signs of heart failure on CXR?
Kerley B lines
Cardiomegaly
Pleural effusions
Alveolar/interstitial oedema in ‘bat wings’ distribution
How and where does furosemide act?
Competitively inhibits the Na-K-2Cl cotransporter in the thick ascending limb of the LoH, diminishing the osmotic gradient for water reabsorption.
Side effects of ACEi?
Dry cough
Hyperkalaemia
Renal impairment
Angioedema/urticaria
Hypotension
Signs that may be visible on fundoscopy of someone with hypertensive retinopathy?
Cotton wool spots
Flame haemorrhages
A-V nipping
Papilloedema
Complications of hypertension?
Heart failure
Stroke
IHD
CKD
Hypertensive retinopathy
Peripheral vascular disease
Mechanism of action of statins?
Inhibits HMG-CoA reductase, the rate-limiting step in cholesterol synthesis
Signs of hypercholesterolaemia?
Xanthelasma
Xanthoma
Corneal arcus
Causes of AF?
IHD
HTN
Hyperthyroidism
Heart failure
Endocarditis
Symptoms of AF?
SOB
Light-headed
Dizzy
Methods of cardioversion?
Electrical - DC cardioversion
Pharmacological - Amiodarone and flecainide
Long term meds in AF patients?
Beta-blocker
CCB
Digoxin
DOAC
Target INR on warfarin?
2-3
Complications of atrial fibrillation?
Stroke
TIA
Heart failure
Most common cause of infective endocarditis?
Staphylococcus aureus
If prosthetic valve - staphylococcus epidermis
Why do urine dip in infective endocarditis?
Microscopic haematuria
Infective endocarditis fundoscopy: boat-shaped retinal haemorrhage with a pale centre?
Roth spots
Criteria used to diagnose infective endocarditis?
Modified Duke criteria
1 major and 3 minor
OR
5 minor
Examination findings infective endocarditis?
New heart murmur
Splinter haemorrhages
Petechiae on the trunk, limbs, oral mucosa or conjunctiva
Janeway lesions (painless red flat macules on the palms of the hands and soles of the feet)
Osler’s nodes (tender red/purple nodules on the pads of the fingers and toes)
Roth spots
Splenomegaly (in longstanding disease)
Finger clubbing (in longstanding disease)
Pansystolic murmur heard loudest on inspiration?
Tricuspid regurgitation
How should blood cultures be taken for infective endocarditis?
3 sets, from 3 diff sites at 3 diff times
What increases the risk of infective endocarditis?
IVDU
Prosthetic valves
PDA
VSD
Mitral valve disease
Bicuspid aortic valve
What pattern on spirometry is seen in asthma?
Obstructive (FEV1/FVC <0.7)
How does salbutamol work?
SABA
Stimulates B2 receptors of resp tract, increases sympathetic activity and relaxes bronchial smooth muscle
Oxygen therapy for Type 2 respiratory failure (low O2, high CO2)
Controlled oxygen therapy via venturi mask as at risk of losing hypoxic drive
Management of acute infective exacerbation of COPD?
Abx
Steroids
Salbutamol/ipratropium NEB
Resp physiotherapy
CURB-65?
C - confusion
U - urea >7
R - RR >30
B - BP <90 systolic or <= 60 diastolic
65 - >65
Most common causes of community acquired pneumonia
Streptococcus pneumonia
Haemophilus influenzae
Staphylococcus aureus
Why may cases of TB be on the rise?
HIV/AIDs prevalence
Use of immunosuppressive drugs
Increased immigration from areas of high prevalence of TB
Poor socio-economic conditions and overcrowding
Why multi-drug therapy for TB?
To combat multidrug resistance
Causes of erythema nodosum?
Idiopathic
Crohns
TB
Ulcerative colitis
Sarcoidosis
Incidence of Cystic Fibrosis?
One in 2500 births
Organisms that colonise the lungs of those with cystic fibrosis?
Staphylococcus aureus
Haemophilus influenzae
Pseudomonas aeruginosa
Causes of bronchiectasis?
Idiopathic
Post-infective
Post-obstructive (foreign body, tumour)
Congenital (Young’s, Kartagener’s)
RA
Alpha-1-antitrypsin deficiency
Complications of bronchiectasis?
Pneumonia
Sepsis
Recurrent LRTIs
Resp failure
Cor pulmonale
Pneumothorax
Lung cancer commonly metastases sites?
Brain
bone
Liver
Lung
Adrenals
Causes of finger clubbing?
Idiopathic pulmonary fibrosis
Bronchial carcinoma
Mesothelioma
Bronchiectasis
Other than obesity give risk factors for OSA?
Acromegaly
Enlarged tonsils
Enlarged adenoids
Nasal polyps
Alcohol
What is cor pulmonale?
Right sided heart failure secondary to chronic pulmonary hypertension
ECG changes in cor pulmonale?
Right axis deviation
Inverted T waves in chest leads
P pulmonale
Dominant R wave in VI
Causes of bilateral hilarity lymphadenopathy?
Sarcoidosis
Lymphoma
Bronchial carcinoma
TB
Sarcoidosis biopsy?
Non-caseating granuloma
Extrapulmonary manifestations of sarcoidosis?
Erythema nodosum
Lymphadenopathy
Arthralgia
Anterior uveitis
Cardiomyopathy
Hepatosplenomegaly
Advice for patient before starting long-term steroids?
Do not stop taking steroids abruptly
Carry ‘steroid card’ at all times
Doses need to be increased during illness
Side effects of long-term steroids?
Adrenal suppression
Hyperglycaemia
Central obesity
Moon face
Skin thinning
Cataracts
Muscle wasting
Osteoporosis
Signs of pleural effusion on examination?
Reduced chest expansion on affected side
Dull percussion
Absent breath sounds
Reduced vocal resonance
Tracheal deviation away from effusion if large
Where to insert needle in pleural tap?
Above the rib to avoid the neuromuscular bundle which sit directly inferior each rib.
Causes of CKD?
Diabetes
Hypertension
Glomerulonephritis
Polycystic kidney disease
Signs of CKD on examination?
Peripheral oedema
Pallor
Purpura
Bruising
Evidence of excoriation
Basic principles of haemodialysis?
Blood and dialysis fluid flow either side of a semipermeable membrane, molecules diffuse down their concentration gradient.
Complications of peritoneal dialysis?
Bacterial peritonitis
Infx at catheter site
Weight gain (due to dextrose solution)
What sites does hydroxylation of Vitamin D take place?
Liver
Kidney
Causes of post-renal AKI
renal calculi
renal tumour
ureteric tumour
BPH
prostate cancer
Other than blood tests, investigations for AKI?
US KUB
Urinalysis
ABG
Life-threatening complications of AKI?
Pulmonary oedema
Hyperkalaemia
Haemorrhage
Indications for dialysis for patients with AKI?
Refractory pulmonary oedema
Refractory hyperkalaemia
Severe metabolic acidosis
Uraemic encephalopathy
Uraemic pericarditis
By what mechanism does rhabdomyolysis cause AKI?
Acute tubular necrosis
What would you see on urine microscopy with rhabdomyolysis
Muddy brown/ granular casts (due to myoglobinuria)
Why withhold metformin and lisinopril during AKI?
Metformin - risk of metabolic acidosis
Lisinopril - nephrotoxic
Hyperkalaemia ECG changes?
Tall tented T waves
Widening of QRS complex
Flat P waves
Prolonged PR interval
If suspected rapidly progressive glomerulonephritis what blood tests should be requested urgently?
ANCA, anti - GBM
What should be started immediately with rapidly progressive Glomerulonephritis?
steroids
Most common cause of nephrotic syndrome in kids and adults?
Kids - minimal change disease
Adults - membranous nephropathy
Complications of nephrotic syndrome?
Increased susceptibility to infections
Increased risk of thromboembolism
Hyperlipidaemia
Dietary advice for those with nephrotic syndrome?
Low salt diet
Normal protein diet
How to calculate serum osmolality?
Serum osmolality = 2(Na + K) + urea + glucose
Normal range = 275-295mOsm/kg