5. Cardiovascular drugs 2 Flashcards

1
Q

Hypertension prevalence

A

25% of adults in UK
60% of over 75s
Accounts for 12% of GP visits in England
1% of hypertensive population develop hypertensive crises

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2
Q

For every 10mmHg reduction in blood pressure

A

17% decrease of CHD
27% reduction of stroke
28% reduction of heart failure
13% reduction of all-cause mortality

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3
Q

What is hypertension?

A

Clinic BP 140/90 or higher

need to make absolutely sure, so need to take it again then if there is a big difference take it one more time

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4
Q

Hypertension diagnosis

A

Clinic BP ≥140/90

ABPM/HBPM >135/85

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5
Q

true normotension

A

normotensive by ABPM/HBPM and clinic BP

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6
Q

True hypertension

A

hypertensive by ABPM/HBPM and clinic BP

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7
Q

White coat hypertension

A

Hypertensive based on office BP and normotensive by ABPM/HBPM

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8
Q

masked hypertension

A

normotensive by clinic BP but hypertension by ABPM/HBPM

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9
Q

Hypertension causes

A

90% primary

10% secondary

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10
Q

Secondary causes of hypertension

A
  • Renal disease – renovascular disease, renal parenchymal diseas
  • Endocrine disease – -Conn’s, Cushing’s, Phaeo
  • Drugs – COC Pills, -Steroids, NSAIDS, Cocaine, EPO
  • Vascular
  • Others – OSA, PIH
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11
Q

Contributary factors to hypertension

A

↑BMI; >14 units of alcohol; salt intake; lack of exercise; stress;

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12
Q

Hypertension risk factors

A
Male
Age
Family history & ethnicity - black African descent
Smoker
Cholesterol
Diabetes
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13
Q

Hypertension symptoms

A
None - silent killer
headache
blurred vision
dizziness
SOB
palpitations
Epistaxis
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14
Q

Hypertension examination

A
Cardiovascular system
Abdomen
fundoscopy (examining back of eye)
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15
Q

Hypertension investigations

A

Urinalysis - Proteinuria

ECG – LVH, AF

Blood tests – U&E, LFT, Lipids, Glucose/HbA1C

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16
Q

Effects of hypertension and target organ damage

A

massive increase in CV risk

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17
Q

Hypertension non drug treatment

A

Weight reduction - maintain ideal BMI (20-25) - 5-10mmHg/10kg weight loss

DASH eating plan - fruit & veg, low fat dairy products - 8-14mmHg

Dietary sodium restriction - <6g salt - 2-8mmHg

Physical activity - 4-9mmHg

Alcohol moderation - 14 units or less per week - 2-4 mmHg

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18
Q

Step 1 hypertension drug for: hypertension in people under 55 and not black

A

ACEi (e.g. ramipril) or ARB (losartan)

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19
Q

Step 1 hypertension drug for black people and people over 55

A

CCB e.g. amlodipine

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20
Q

Stage 1 hypertension treatment

A
Stage 1 (CBP ≥140/90 mmHg; ABPM/HBPM >135/85) 
		\+
	Target organ damage
	Established CV disease
	Renal disease
	Diabetes
	10 year CV risk ≥ 20%
21
Q

Stage 2

A

(CBP≥160/100; ABPM/HBPM >150/95)

use ARB and CCB

22
Q

Severe hypertension

A

(CBP>180/110)

ARB and CCB and thiazide-like diuretic and either further diuretic or alpha/beta-blocker

23
Q

What to check before starting ACE inhibitors/ARB

A

Check serum creatinine and potassium

    Before starting therapy (do not start if K above normal range)
    After 1-2 weeks
    After subsequent dose increases 

If creatinine rises >30% or GFR falls >25% or K >6

   Stop drug
   Repeat tests
   Consider other causes

Extra Caution when co-prescribed with Spironolactone!!

24
Q

Effects of ACEi/ARBs in pregnancy and breastfeeding

A

Contraindicated in pregnancy

Contraindicated in breast feeding

Alternatives – labetalol, methyldopa, nifedipine/amlodipine

Check if in doubt!

25
BP threshold
when you start treatment
26
BP target
what you aim to treat to
27
How to monitor drug treatment
use clinic BP measurements to monitor response to treatment and aim for target BP beneath 140/90 for under 80s and 150/90 for over 80s
28
How to monitor drug treatment in pts with white coat effect
``` White coat effect is when people already have hypertension but get stressed out in clinic and their bp changes Need to use ABPM or HBPM to monitor target: below 135-85 mmHg in under 80s below 145/85 in over 80s ```
29
Hypertension proteinuria targets
Proteinuria low: ACR<70 or PCR<100 - Target blood pressure <140/90 Proteinuria high: ACR>70 or PCR>100 - Target blood pressure <130/80
30
When should ACE-i or ARBs be used in hypertensive pts with proteinuria?
should be included in: Patients with urinary ACR>30 or PCR>50 Diabetic patients with microalbuminuria
31
Causes of treatment failure
Pseudo-resistant Hypertension (Non adherence; white coat effect) Secondary Hypertension Resistant Hypertension
32
Step 4 treatment
Confirm BPs with ABPM and HBPM Low dose spirolactone if potassium under 4.5mmol/l Alpha blocker/beta blocker if potassium over 4.5mmol/l
33
Treatment of hypertension in older patients
Check for postural hypotension Treat to below NICE targets in >80 year old patients ie CBP<150/90 or ABPM/HBPM <145/85 Use clinical judgement
34
Hypertensive emergency
Severe “hypertension” (BP≥ 180/120 mmHg) with acute damage to the target organs Lower BP in minutes to hours!!
35
Hypertensive urgency
Severe “hypertension” without acute damage to the target organs Lower BP after a review within 7 days
36
Clinical features of hypertensive crises
``` Asymptomatic Headache Epistaxis Presyncope Palpitations ``` Chest pain Dyspnoea Neurological deficit
37
Hypertensive crisis - acute target organ damage
Eyes (papilloedema) Brain (encephalopathy, stroke) Heart (pulmonary oedema, MI) Kidneys (AKI) Aortic dissection
38
Treatment for hypertensive emergency
Same day specialist review IV Therapy – Labetalol, GTN, Sodium nitroprusside, Esmolol Reduce BP/MAP (20–25% in the 1-2 hours) Target of 160/100 in 6 hours
39
Treatment for hypertensive urgency
ABPM/HBPM GP follow up within 7 days Oral treatment
40
Statins for primary CVD prevention
Under 84 year olds should have CV risk estimated Lifestyle modification Offer atorvastatin for a 10% or greater 10‑year risk of developing CVD For people 85 years or older also consider atorvastatin (no need for CV Risk calculation) Offer statins in Type 1 diabetes (>40 and long standing) and CKD (no need for CV Risk calculation)
41
Statins for secondary prevention of CVD
Start statin treatment in people with CVD Do not delay statin treatment to manage modifiable risk factors
42
CKD and statins
Adults with chronic kidney disease (CKD 3) should be offered atorvastatin Do not use a risk assessment tool to assess CVD risk in people with an estimated glomerular filtration rate (eGFR) less than 60 ml/min/1.73 m2 and/or albuminuria
43
Blood tests before statins
Lipid measurement Liver function tests – 3x upper limit of normal Renal function HbA1C Thyroid stimulating hormone Creatine kinase (CK) - 5x upper limit of normal. No need to do CK unless symptoms
44
Follow up after statins
Lipid measurement (3 months after) - 40% reduction in non- HDL Cholesterol Liver function tests (3 months after) Creatine kinase (CK) - if symptoms Annual medication review
45
Ezetimibe
Ezetimibe monotherapy is recommended as an option for treating primary (heterozygous‑familial or non‑familial) hypercholesterolaemia in adults in whom initial statin therapy is contraindicated or not tolerated Ezetimibe co‑administered with statin might be appropriate
46
statins not tolerated
Stop, reduce dose or switch statin Specialist input Ezetimibe Not fibrates!!
47
Hypertriglycerridaemia
Exclude excess alcohol and poor glycaemic control Triglyceride >20 mmol/l – Refer to specialist Triglyceride 10–20 mmol/l – repeat as fasting sample within 2 weeks. If still >10 mmol/l then refer to specialist. Triglyceride 4.5–9.9 mmol/l – check CVD risk and correlate with cholesterol
48
CV risk - Framingham heart study
``` Age Gender LDL cholesterol HDL cholesterol Blood pressure Diabetes Smoking Obesity ```
49
Cardiovascular risk calculators
QRISK®2 and 3 – 10 year Cardiovascular risk | JBS3 - Lifetime CV risk