GP CONDITIONS Flashcards
HTN
What is malignant HTN?
Rapid rise in BP –
- Fibrinoid necrosis
- Retinal haemorrhages
- Papilloedema
- Exudates
Severe HTN ≥180/120
HTN
How might malignant HTN present?
Management?
- Headache ± visual loss, typically younger + black patients
- Same day specialist referral if Sx if not Ix for end-organ damage
HTN
After a diagnosis of HTN what other investigations would you do?
- QRisk 3 + check for end-organ damage:
– Urine dipstick (proteinuria + haematuria
– Fundoscopy for hypertensive retinopathy
– 12 lead ECG
– First urine albumin creatinine ratio (ACR) - blood tests: HbA1c, U+Es, creatinine, cholesterol
HTN
In terms of clinical and ABPM/HBPM, how would you diagnose…
i) stage 1 HTN?
ii) stage 2 HTN?
iii) severe HTN?
i) ≥140/90 or ≥135/85
ii) ≥160/100 or ≥150/95
iii) ≥180 or ≥110 (clinical)
HTN
In terms of medication, what is first line treatment for…
i) 45 + T2DM?
ii) <55y/o?
iii) ≥55y/o?
iv) Afro-Caribbean?
i) ACEi or ARB
ii) ACEi or ARB
iii) CCB
iv) CCB
HTN
In terms of HTN medication, what is…
i) step 2?
ii) step 3?
iii) step 4?
i) The alternative (ACEi/ARB or CCB)
ii) Diuretics - Bendroflumethiazide, furosemide
iii) Beta-blocker, alpha-blocker, spironolactone if low potassium
HTN
What is an example and mechanism of action of ACEi?
Ramipril,
inhibit conversion of angiotensin I>II
HTN
What are the side effects of ACEi?
Dry cough + rash (bradykinin),
hypotension,
hyperkalaemia,
AKI (check renal function 1-2w after starting)
teratogenic
HTN
What are the clinical + ABPM/HBPM HTN treatment targets for…
i) <80?
ii) >80?
iii) diabetics?
i) <140/90 or <135/85
ii) <150/90 or <145/85
iii) <130/80
ANGINA
What is the secondary prevention of angina?
4As –
- Aspirin 75mg OD (+ second antiplatelet like clopidogrel for 12m)
- Atorvastatin 80mg ON
- Atenolol (or bisoprolol) titrated to max tolerated
- ACEi (ramipril) titrated to max tolerated
ANGINA
What are some long-term symptomatic relievers of angina?
- Beta-blocker (in secondary prevention)
- CCB (amlodipine)
- Long-acting nitrates (isosorbide mononitrate)
ACS
What are the complications following ACS?
DREAD –
- Death
- RUpture of heart septum or papillary muscles
- oEdema
- Arrhythmia or Aneurysm
- Dressler’s syndrome
ACS
What is the management of NSTEMI?
BATMAN
– Beta-blocker
– Aspirin 300mg
– Ticagrelor 180mg
– Morphine
– Anticoagulant (LMWH)
– Nitrates (GTN)
ACS
What is the secondary prevention of ACS?
5As:
– Aspirin 75mg OD
– Another antiplatelet (clopidogrel or ticagrelor for 12m post PCI to prevent thrombus on stent)
– Atorvastatin 80mg ON
– ACEi
– Atenolol (or bisoprolol)
COPD
What are steps 1 and 2 of the COPD management?
- 1 = SABA or SAMA
- 2:
– FEV1>50% = LABA and/or LAMA
– FEV1 <50% LABA + ICS and/or LAMA (also offered in those with asthma/atopic features)
PNEUMONIA
What score can be used to assess severity of CAP?
How does this guide your management?
- Confusion
- Urea >7mmol/L
- RR ≥30/min
- BP <90 or 60
- 65 ≤ age
- 0-1 = PO amoxicillin in community
- 2 = PO amoxicillin + clarithromycin in hospital
- ≥3 = severe IV co-amoxiclav + clarithromycin ?ICU
CONSTIPATION
What is the management of constipation?
- Hydration + increased fibre
- Bulking agents = increased faecal mass + peristalsis (ispaghula husk)
- Osmotic = retain fluid in bowel (lactulose)
- Stimulant = increased intestinal motility (Senna)
- Phosphate enemas
GALLSTONES
What causes gallstones?
Risk factors?
- Imbalance between cholesterol + bile salts (75% mixed, 20% large yellow cholesterol, 5% bilirubinate)
- Fat, Female, Forty, Fertile
- Crohn’s as malabsorption of bile salts from terminal ileum
- Haemolytic anaemias as increased bilirubin > bilirubinate stones
ACUTE CHOLECYSTITIS
What is the clinical presentation of acute cholecystitis?
- RUQ pain radiating to tip of scapula
- FEVER (differentiates from biliary colic), N+V
- Murphy’s sign = tenderness worse on inspiration with 2 fingers on RUQ
- NO jaundice (differentiates from ascending cholecystitis)
ACUTE CHOLECYSTITIS
Investigations for acute cholecystitis?
- FBC (raised WCC), LFTs,
- USS shows gallstones + distended gallbladder with thickened wall
- Sonographic murphy’s
ACUTE CHOLECYSTITIS
Management of acute cholecystitis?
- Conservative = NBM, IV fluids, pain relief, IV Abx
- Lap chole
PERIPHERAL VASCULAR DISEASE
what are the investigations for PVD?
1st line = ankle brachial pressure index (ABPI), duplex ultrasound
<0.3 = critical ischaemia
ARRHYTHMIAS
Give 2 effects of hypokalaemia on an ECG
- Flat T waves
- QT prolongation
- ST depression
- Prominent U waves
ARRHYTHMIAS
Give an effect of hypocalcaemia on an ECG
- QT prolongation
- T wave flattening
- Narrowed QRS
- Prominent U waves
ARRHYTHMIAS
Give an effect of hypercalcaemia on an ECG
- QT shortening
- Tall T wave
- No P waves
ARRHYTHMIAS
What ECG changes might you see with someone with ventricular tachycardia?
Crescendo-decrescendo amplitude = torsades de pointes
HEART BLOCK
Describe a first degree heart block
Fixed prolongation of the PR interval due to delayed conduction to the ventricles
- PR interval >0.22s
- asymptomatic
HEART BLOCK
Describe a second degree heart block
There are more P waves to QRS complexes because some atrial impulses fail to reach the ventricles
HEART BLOCK
Describe a Mobitz type 1 second degree heart block
PR interval gradually increases until AV node fails and no QRS is seen
PR interval returns to normal and the cycle repeats
HEART BLOCK
Describe a Mobitz type 2 second degree heart block
Sudden unpredictable loss of AV conduction and so loss of QRS
PR interval is constant but every nth QRS is missing
wide QRS
HEART BLOCK
Explain the pathophysiology of a BBB
Lack of simultaneous ventricular contractions
LBBB = R before L
RBBB = L before R
IBS
Describe the pharmacological treatment of IBS
- Antispasmoidics for bloating - mebeverine
- Laxatives for constipation
- Anti-motility agent for diarrhoea - loperamide
- Tricyclic antidepressants
HTN
What is an example and mechanism of action of CCB?
Amlodipine,
act on L-type Ca2+ channels
HTN
What is an example and mechanism of action of thiazide-like diuretic?
Indapamide,
locks Na+ reabsorption at DCT by blocking Na+/Cl- symporter
HTN
What is an example and mechanism of action of ARB?
Candesartan,
blocks effects of angiotensin II at the AT1 receptor
HTN
What are the side effects of CCB?
Oedema,
headache,
flushing
palpitations
HTN
Name 4 classes of diuretics
- Thiazides
- Loop
- Potassium sparing
- Aldosterone antagonists
HTN
What are the side effects of beta-blocker?
Headache,
hypotension,
erectile dysfunction
HTN
What are the risk factors for HTN?
Modifiable:
- alcohol intake
- sedentary lifestyle
- diabetes mellitus
- sleep apnoea
- smoking
Non-modifiable:
- Increasing age
- family history
- ethnicity - afro-Caribbean
HTN
Where in the kidney do thiazide diuretics work?
The distal tubule
ACS
Give 3 signs of MI
- Hypo/hypertension
- 3rd/4th heart sound
- Signs of congestive heart failure
- Ejection systolic murmur
ACS
How does aspirin work?
Antiplatelet
Irreversibly inhibits COX –> reduced thromboxane 2 synthesis –> platelet aggregation reduced
ACS
How does clopidogrel work?
Antiplatelet
P2Y12 inhibitor –> prevents platelet activation
OTITIS EXTERNA
What is malignant otitis externa?
- Immunocompromised, DM or elderly where it can spread to the surrounding bones (mastoid + temporal)
OTITIS EXTERNA
What are some causes of otitis externa?
- Infection (staph. aureus, pseudomonas aeruginosa or fungal)
- Seborrhoeic dermatitis
- Contact dermatitis (allergic + irritant)
OTITIS EXTERNA
What is the management of otitis externa?
- May need to clean ear canal first with syringing or irrigation
- Topical Abx or a combined topical Abx with steroid = 1st line
- PO flucloxacillin if infection spreading, swab before
T2DM
What is the pathophysiology of T2DM?
- Repeated exposure to glucose + insulin = resistance to effects of insulin so more required for a response
- Beta cells fatigued + damaged so produce less
- Low insulin + peripheral insulin resistance = impaired glucose tolerance
T2DM
What values are diagnostic for T2DM?
- HbA1c ≥48mmol/mol Dx
1 result if Sx, 2 separate if none: - Random glucose ≥11.1mmol/L
- Fasting glucose ≥7mmol/L
- OGTT 2h ≥11.1mmol/L
T2DM
What is a main complication of uncontrolled T2DM?
- Hyperglycaemic hyperosmolar state
- Decrease insulin = increase serum glucose + serum osmolality + urination but no ketosis as still some endogenous insulin
T2DM
How does HHS present?
How is it diagnosed?
Management?
- Marked dehydration (polydipsia, polyuria, hypovolaemia) + impaired consciousness
- Plasma glucose >30mmol/L, plasma osmolality >320mOsm
- IV fluid replacement, infuse insulin, LMWH prophylaxis as hyperviscous blood
T2DM
List 6 medications that can be used in T2DM
- Metformin (biguanide, first line)
- Gliclazide (sulfonylurea)
- Sitagliptin (DPP4 inhibitor)
- Empagliflozin (SGLT)
- Glitazone (pioglitazone)
- GLP-1 mimetics
T2DM
What is the mechanism of action of…
i) metformin?
ii) gliclazide?
iii) sitagliptin?
i) Increased insulin sensitivity, reduced gluconeogenesis in liver + helps weight
ii) Stimulates beta cells to secrete insulin
iii) Increases incretin levels which inhibit glucagon production
T2DM
What is the mechanism of action of…
i) empagliflozin?
ii) glitazone?
iii) GLP-1 mimetics?
i) Blocks glucose reabsorption in PCT of kidneys + promotes excretion of excess glucose in urine
ii) Increases insulin sensitivity + decreases liver production of glucose
iii) Incretin (GLP-1) mimetic inhibits glucagon secretion (after triple therapy)
T2DM
What are some side effects of…
i) metformin?
ii) gliclazide?
iii) sitagliptin?
iv) empagliflozin?
v) glitazone?
vi) GLP-1 mimetics?
i) GI upset (D+V, abdo pain), lactic acidosis
ii) Hypoglycaemia + weight gain
iii) GI upset, pancreatitis
iv) Glucosuria, weight loss + UTI risk
v) Weight gain, fluid retention, heart failure
vi) Weight loss, N+V, pancreatitis