Management of Hypertension Flashcards
What tool do we use for assessing risk of cardiac disease/stroke based on someones hypertension?
The Assign Risk Calculator (Q-Risk)
What do we do after assessing someones risk before we plan treatment?
Set a target blood pressure.
Recommended to aim for <135/80mmHg (145/85 in people over 80)
What level of CVD risk are we recommended to start treatment at?
20% risk of CVD within the next 10 years
We take a ‘stepped’ approach to treatment, what does this mean? [1]
We introduce one new drug to current treatment at a time until they begin to work
What are the 3 classes of drugs used for hypertension treatment?
A - ACE Inhibitor (angiotensin converting enzyme inhibitor)
C - Calcium Channel Blocker
D - Thiazide Type Diuretic
What kind of drug do we start with in young hypertensives? [1] <55yo
An ACE inhibitor
What drug type do we start with in the elderly (>=55yo) or black? If they are intolerant (edema), what would be the next choice? [2]
A calcium channel blocker or thiazide type diuretic
We don’t always treat stage 1 hypertension, in what case would we? [6]
If theyre under 80 with stage 1 hypertension and any of the following:
- Target Organ Damage
- Establised CVD
- Renal Disease
- Diabetes
- A 20% CVD risk over 10 years
Do we treat everyone with stage 2 hypertension?
Yes no matter theyre age.
The patient is <40 yrs old with atleast stage 1 hypertension, what extra do you do for them? [3]
Refer to a specialist for:
- Evaluation of target organ damage
- Evaluation of possible secondary causes
How do you monitor the BP of someone your treating if they ‘white coat effect’?
With ABPM or HBPM
Black people are genetic salt retainers and should be managed differently if have hypertension. How?
Yes we treat black people of any age the same as we treat other races over 55 yrs.
What do we give under 55s for step 1 treatment? [2]
An ACE inhibitor or ARB
What do we add for step 2 treatment?
A+C
What do we add for step 3 treatment?
A+C+D
What do we do for step 4 treatment? Give dose as well as choice of drug [3]
Depends on blood potassium level [1]
If <4.5mmol/L give further diuretics and low dose spironolactone (25mg once a day) [1]
If >4.5mmol/L give higher dose Thiazide Type Diuretics [1]
Name 2 ACE inhibitors?
What effect will ACEIs have physiologically? [2]
Ramipril & Perindopril
They will prevent Angiotensin II forming and so cause vasodilation and reduced water reabsorption.
They also lower future organ damage, to which angiotensin II is a main contributor
What are 3 contraindications for ACEIs?
Renal Artery Stenosis
Renal Failure
Hyperkalemia
Name 5 Adverse Drug Reactions to ACEIs?
- Cough
- Postural hypotension
- Taste Disturbance
- Renal Impairment
- Angioedema
Name 3 drugs with which ACEIs react and the reactions:
NSAIDs - Acute Renal Failure
Potassium supplement - Hyperkalemia
Potassium Sparing Diuretics - Hyperkalemia
What are ARBs?
Angiotensin II antagonists
Compare ARBs to ACEIs [2]
ACEIs are more effective [1]
ARBs have far fewer side effects, almost removes the cough [1]
What is the pharmacological action of ARBs? [2]
They competetively inhibit angiotensin II [1] at the AT1 receptor [1]
Name 4 ARBs:
Losartan
Candesartan
Valsartan
Irbesartan
What are the 2 types of CCBs?
Vasodilators, used commonly
Rate limiting CCBs, used by specialist clinics when other options are exhausted
Name 3 vasodilating CCBs:
Amlodipine
Felodipine
Nifedipine
Name 2 Rate Limiting CCBs?
Verapamil
Diltiazem
What is the treatment of choice for over 55s and women of child bearing age?
A vasodilating CCB such as Amlodipine or Felodipine
What are 3 contraindications of CCBs?
Acute MI
Heart Failure
Bradycardia
What are 6 ADRs of CCBs?
Flushing Headache Ankle Oedema Indigestion and reflux oesophagitis Bradycardia - Rate Limiting only Constipation - Rate Limiting Only
Name 2 Thiazide Type Diuretics?
Indapamide
Clortalidone
Whats the action of TTDs? [2]
They block sodium reabsorption and icnrease the amount lost in the urine
Name 2 ADRs of TTDs?
Gout
Impotence
In what group are TTDs most commonly used as a 1st step treatment?
Afro-Carribeans
Name 3 classes of less common hypertension medications:
- Centrally Acting Agents
- Alpha-Adrenoreceptor antagonists
- Vasodilators
Name 2 centrally acting agents:
Methyldopa
Moxonidine
When is methyldopa used over other antihypertensives?
During pregnancy
How does methyldopa work? [4]
1) Converted to alpha-methylnoradrenaline
2) Acts on CNS alpha-adrenoreceptors
3) Decreases Symp. Outflow
4) Lowers MAP
Name 4 ADRs of methyldopa?
Sedation, Drowsiness
Orthostatic Hypotension
Nasal Congestion
Dry Mouth
Name 2 vasodilators used less commonly in hypertension treatment:
Hydralazine
Minoxidil
Name a alpha-adrenoreceptor antagonist?
Doxazosin
What does Doxazosin do? [2]
Opposes smooth muscle contraction [1] by blocking post synaptic alpha1-adrenoreceptors [1]
Give 4 ADRs of Doxazosin?
Dizziness
Dry Mouth
Headache
1st Dose hypotension
Give a brief common treatment regime for someone over 55 [5]
Step 1: CCB
Step 2: A + D
Step 3: A + C + D
Step 4: + Spironolactone or higher dose TTD (depending on K level)
Give a brief common treatment regime for a young person <=55yo [4]
Step 1: ACEI/ARB. If child bearing age, CCB
Step 2: A + C
Step 3: A + C + D
Step 4: Spironolactone or higher dose TTD (depending on K level)
Condition specific preferences for anti-hypertensives
Angina
BB and CCB
Condition specific preferences for anti-hypertensives
Heart failure
ACEi, BB, spironolactone
shown to have impact on prognosis of HF
Condition specific preferences for anti-hypertensives
Atrial fibrillation
permanent not paroxysmal
BB, CCB
Condition specific preferences for anti-hypertensives
Renal dysfunction
ACEi, ARAs
Condition specific preferences for anti-hypertensives
PVD
CCB