DPD Flashcards
3 macrovascular complications of diabetes
- Ischaemic heart disease
- Cerebrovascular disease
- Peripheral vascular disease
3 microvascular complications of diabetes
- Diabetic neuropathy
- Diabetic retinopathy
- Diabetic nephropathy
State the 4 types of diabetic retinopathy and their treatment
- Background diabetic retinopathy: blood glucose control
- Pre-proliferative: pan-retinal photocoagulation
- Proliferative: pan-retinal photocoagulation
- Maculopathy: grid photocoagulation
Side effects of metformin
GI upset
Lactic acidosis in unwell patients
Side effects of sulfonylureas
Hypoglycaemia
Side effects of thiazolidinediones
Fluid retention
MI, osteoporosis
3 clinical features of diabetic nephropathy
- Progressive proteinuria (microalbuminuria)
- Hypertension
- Deranged renal function (creatinine, eGFR)
Definition of diabetes
Fasting blood glucose >7.0 mmol/L
Management of diabetic nephropathy
Inhibit RAAS: ACEi, ATII blockers
Diabetic control
Blood pressure control
Stop smoking
3 top investigations for chest pain
- ECG
- Troponin
- Positive –> coronary angiography
- Negative –> exercise tolerance test - Echocardiography
Three things to think about when deciding ddx
Symptoms
Associated features
Risk factors
Chest pain: top three causes
Ischaemic heart disease
Aortic dissection
Pericarditis
LoC important to know
Before: Prodrome?
During: Tongue biting? Epilepsy
After: Confusion? None in cardiac causes
Collapse ddx (3 main types of causes)
Metabolic: Hypoglycaemia
Neurological: seizures
Cardiac: Vasovagal. arrhythmias, outflow obstruction, postural hypotension
Cardiac causes of collapse
Arrhythmias
Outflow obstruction: Aortic stenosis, hypertrophic obstructive cardiomyopathy, PE
Postural hypotension
Causes of long QT syndrome
Congenital
Acquired: low K+, low Mg2+, drugs
3 causes of pansystolic murmur
Mitral regurg
Tricuspid regurg
Ventricular septal defect
3 causes of raised JVP
R heart failure
Tricuspid regurg
Constrictive pericarditis
3 causes of constrictive pericarditis
Infection e.g. TB
Inflammation e.g. connective tissue disease
Malignancy
Both are regular narrow-complex tachycardias with no P waves.
How to distinguish AVNRT and AVRT on ECG?
AV nodal reentry: circuit includes the AV node; no delta wave
AV reentry: goes through accessory pathway (bundle of Kent); delta wave present when not in tachycardia
Causes of sinus tachy
Shock (septic, hypovolaemic)
PE
Endocrine (thyrotoxicosis, phaeo)
Anxiety
Causes of AF
Thyrotoxicosis, alcohol
Heart: myocarditis, valvular disease, pericarditis
Lungs: Pneumonia, PE, cancer
Causes of VT
Ischaemia
Electrolyte abnormality
Long QT
SVT management
Vagal maneuvers
IV adenosine for cardioversion
DC cardioversion if haemodynamically compromised
AF acute management
Rate control with beta-blockers / digoxin
Anticoagulation
Can also do rhythm control - but If onset >48h, need to anticoagulate for 2-3weeks before cardioversion.
Management of VT
With pulse: IV amiodarone
Pulseless: defibrillation
Treat underlying cause!
ECG signs of ischaemia
ST elevation / depression
T wave inversion?
Q waves?
ECG signs of arrhythmia or conduction defects
Rate
Rhythm
PR: first
QRS: broad? LBBB, RBBB
Ventricular strain / hypertrophy
Axis deviation
QRS morphology
Cause of S3
Ventricular filling
Cause of S4
Ventricular hypertrophy and stiffening
S3 vs fixed split S2?
S3 heard better with bell
Management of acute pulmonary oedema
Sit up
O2
IV GTN
IV furosemide
Management of acute pulmonary oedema
Sit up
O2
IV GTN
IV furosemide
VF / pulseless VT management
Shock (defib) CPR Reassess rhythm IV 1mg adrenaline every 2 - 3 min Treat underlying cause
5Ps: causes of pleuritic chest pain
Pericarditis PE Pneumonia Pneumothorax Pleural pathology
…and referred pain sub-diaphragmatic problems e.g. hepatic abscess
Causes of pleural effusion transudates
Organ failure: heart, liver, kidney
Causes of pleural effusion exudates
Parapneumonic, cancer, pulmonary embolism
Buerger’s sign
Reactive hyperemia after elevation of foot to 45 deg (sign of arterial insufficiency)
6 Ps of acute limb ischaemia
Pain Pallor Perishingly cold Pulseless Paraesthesia Paralysis
Classification of aortic dissection, and treatment
Stanford Type A: proximal to L subclavian
Stanford Type B: distal to L subclavian
Emergency open surgery for Type A
Surgery for complicated Type B (visceral ischaemia)
Conservative, BP control and surveillance for uncomplicated Type B
Diagnosis of Gilbert’s Syndrome
Normal LFTs with elevated unconjugated bilirubin
Worsened by fasting
Gilbert’s syndrome pathophysio
UDP-glucuronyltransferase activity reduced to 30%
Autosomal recessive
Fairly common, 6-10% of Western populations affected
4 grades of hypertensive retinopathy
Grade 1: “silver wiring”
Grade 2: AV nipping
Grade 3: flame haemorrhage, cotton-wool spots
Grade 4: All 3 + papilloedema
Definition of LVH on ECG
S wave in V1 + R wave in V5/6 >35mm
Management of essential hypertension
Intensive lifestyle modification
Aggressive management of blood pressure and lipids
Aspirin
Assess for T2DM
Electrolyte imbalances causing fits
- Hypercalcaemia
- Hyponatraemia
- Hypoglycaemia
- Hypokalaemia
Antimitochondrial antibodies are the hallmark of…
Primary biliary cirrhosis
Triad of symptoms for Wernicke’s encephalopathy
Confusion
Ataxia
Opthalmoplegia
(Note: Wernicke’s is acute or subacute in presentation)
Korsakoff’s encephalopathy is associated with what type of amnesia?
Anterograde amnesia
Note: Korsakoff’s is chronic in presentation
Internuclear opthalmoplegia is indicative of…
Demyelinating disease / MS
Management of variceal bleed
Antibiotics (prophylactic for bacterial translocation)
IV terlipressin
Endoscopy with variceal band ligation
Investigations for jaundice
Bloods: FBC, LFTs, CRP
Abdominal USS
2 investigations for dysphagia and wt loss
OGD and biopsy
Main investigation for PR bleed and wt loss
Colonoscopy
3 common post-op complications in GI ops
Wound infection
Anastomotic leak
Pelvic abscess
Management of acute hyperkalaemia
IV calcium gluconate (10ml of 10%)
Insulin and dextrose
Definition of MS
At least 2 neurological lesions separated in time and space
Meralgia paraesthetica
Compression of lateral femoral cutaneous nerve causing burning anterolateral thigh pain
Management: lose weight, wear loose clothing
AV block Type 2: Mobitz II
Usually haemodynamic compromise, more likely to progress to complete heart block