Hypertension Flashcards
What are the 3 methods of measuring hypertension
ABPM
HBPM
Clinical
What does it mean to have ‘established CVD’
Conditions affecting the heart or blood vessels such as angina, stroke
Target organs are
Heart
Kidney
Eye
Brain
Problems here can cause high BP
Recommended salt intake
<6g a day
What are secondary causes of hypertension
Renal disease
Endocrine
Whats the target clinical blood pressure for over 80s
ABPM
< 150/90 mmHg
< 145/85mmHg
Under 80s target clinical blood pressure
< 120/80 mmHg
Stage 1 clinical blood pressure and ABPM
140/90mmHg
135/85mmHg
Stage 2 clinical blood pressure and ABPM
160/100mmHg
150/95mmHg
Severe clinical BP
180mmHg systolic or 120 mmHg diastolic
Which readings are required to diagnose stage 1 and stage 2 hypertension
Both clinical and ABPM
Which readings would you require to diagnose stage 3 hypertension
Either systolic 180mmHg or 120mmHg diastolic
Target BP for diabetics with conditions affecting their vessels supplying the brain e.g., eye, kidney
130/80mmHg
Pregnant women taking antihypertensives should aim for the clinical reading of
135/85mmHg or less ABPM
< 140/90mmHg
Patients with CVD conditions and diabetes should aim for a target BP of
140/90mmHg
Whats persistent hypertension
High blood pressure at repeated clinic encounters
Accelerated hypertension is
Severe increase in BP greater than 180/120mmHg and often over 220/12mmHg WITH signs of
Retinal haemorrhage and/or papilledema. Usually associated with organ damage
A patient presents to you in the pharmacy with a blood pressure of 197/126mmHg with retinal haemorrhage
What is this and what would do you do?
Accelerated (malignant) hypertension
Refer to specialist on the same day!!!!!
Patients presenting to you with a blood pressures between 140/90 and 180/120 should be offered….
Whilst waiting for the results investigate…….
ABPM to confirm diagnosis. Otherwise HBPM
Investigate target organ damage and assess CVD risks using QRISK score
A patient presents with a BP of 129/87mmHg. Hes offered ABPM and investigated target organ damage and CVD risk. His results come back as no organ damage and no hypertension.
What do you do?
Measure BP every 5 years and more frequently if BP closer to 140/90
Stage 1 hypertension under 80s, do you offer them treatment?
Only if they have 1 or more:
- target organ damage
- Established CVD
- Renal disease
- Diabetes
- 10% CVD risk
Otherwise just lifestyle
In < 40yrs with stage 1 hypertension investigate……
Secondary causes of hypertension such as thyroid
Under <60s stage 1 hypertension with less than 10% CVD risk offer……
Lifestyle advice and consider treatment
Stage 1 hypertension > 80s, do we give medication?
Yes
Stage 2 hypertension, which ages would be given anti hypertensives
Treat all regardless of age
(160/100mmHg)
Stage 3/ severe hypertension treat all by giving
IV anti hypertensive
A patient presents to you with a BP of 220/120mmHg but has no other symptoms.
- same day referral (accelerated hypertension)
- refer to the hospital immediately
- refer to the GP
- advise them to take more fluids
Refer to the hospital. Carry out investigations for target organ damage asap
A patient has accelerated hypertension and organ damage, hes still awaiting his home/ABPM results. what do you recommend?
Start antihypertensive immediately without waiting for results
A patient presents to you with accelerate hypertension but with no target organ damage. What do you recommend?
Repeat clinic BP within 7 days
In all patients with DIABETES and HYPERTENSION the first line is
ACEI or ARB regardless of family origin or age
Which is preferred in Caribbean origin?
ACEi or ARBS
ARBs
Which Diuretic is preferred in hypertension, bendroflumethiazide or indapamide?
Indapamide unless already stable on bendro
Why are Antihypertensives beneficial in diabetic patients
Reduces risk of macro vascular complications
Diabetes macrovascular complications
CDV
Increased risk of MI/stroke
Diabetes microvascular complications
Kidney problems
Retinopathy
Nephropathy
Hypertension with T2DM treatment:
- ACEi or ARB - ACEi prevents macrovascular complications and helps kidney function
- Add a CCB or a TLD
- ARB/ACEi + CCB + TLD
- Spironolactone 25mg if K+ <4.5mmol otherwise alpha blocker - doxasozin or BB
Hypertension treatment
No diabetes
Under 55 And not of black origin
- ACEi or ARB
- Add a CCB or a TLD
- ARB/ACEi + CCB + TLD
- Spironolactone 25mg if K+ <4.5mmol otherwise alpha blocker - doxasozin or BB
Whats the relationship of renin with age and origin
Lower levels of renin in older age (55+) and in black origin hence ACEi cant function as well so they arent used 1st line
Hypertension treatment
Agee 55 or over or of black origin
- CCB
2.CCB + ACEi/ ARBs/TLD
- ACEi/ARB + CCB + TLD
- Spironolactone 25mg if K+ <4.5mmol otherwise alpha blocker - doxasozin or BB
Before moving onto step 4 anti hypertensives check:
Check for postural hypotension
Confirm resistant hypertension at home/ABPM
Discuss adherence
Give examples of BB used in 4th line antihypertensive treatment
Atenolol
Bisoprolol
Can tamsulosin be added in 4th line antihypertensive treatment?
No
Its an alpha blocker but used for BPH
Which CCB do we use in hypertension
Dihydropyridines- amlodipine
Why arent rate limiting CCB used in hypertension
They influence heart rate
Major SE of dihydropyridines
How to respond?
Oedema
Stop and give alternative
Why is spironolactone mot given if the K+ levels >4.5mmol/l
Hyperkalaemia risk with acei and spironolactone and both drugs have additive SE
TLD may cancel it out as it causes hypokalaemia but still monitor
How do TLD affect K+ levels
Hypokalaemia
When taking a combination of antihypertensive you are at risk of
Hypotension
What time of day should you take diuretics
Morning
What time of day should you take ACEi
At night
When do you take amlodipine- time of day
Anytime
Measure standing and sitting BP if:
T2DM
80 or ocer
Symptoms of postural hypotension
In T1DM with hypertension which CCBs are used
Long acting preparations such as MR nifedipine
T1DM and hypertension treatment:
- ACEI or ARB start with low dose and titrate to max
- Either:
- BB
-CCB - long acting only
-Diuretics (low dose thiazide)+ BB combo
2nd line in any order as long as ACEi is 1st line
Do ACEi protect the kidney
Only in diabetic patients otherwise they could damage them
can BB be given in AV block
Caution in 1st degree AV block
CI in 2nd and 3rd Degree AV block
BB contraindicated in the conditions:
2nd and 3rd degree AV block
Prinzmetals angina
Marked bradycardia
Unstable HF
Whats the target BP in patients with diabetes and CKD or if creatinine ratio >70mg/mmol
< 130/80mmHg
Target BP in patients with renal disease
< 140/90mmHg
Can ACEi be used in renal impairment
Why
with caution because ACEi cause hyperkalaemia and low CrCl increases the risk of hyperkalaemia
How does CrCl affect K+
Low CrCl increases hyperkalaemia risk
What are the drugs used in hypertension in pregnant patients
Labetalol
MR nifedipine (unlicensed)
Methyldopa (unlicensed)
Avoid Labetalol in pregnant patients with the conditions _____
COPD
asthma
Unstable HF
A pregnant patient is on methyldopa to control her hypertension. When would you stop this medication
2 days after birth and continue regular hypertension treatment
Whats used in severe hypertension in pregnant women
IV magnesium sulphate is used in critical care or severe hypertension
Whats the Labetalol dose in hypertensive pregnant women
100mg BD; dose increased at intervals of 14 days
Usual dose 200mg BD; increased if necessary to Up to 400mg BD
Whats the max dose of labetalol use in hypertensive pregnant women
2.4g per day
Can be divided into 3-4 doses
Labetalol cautionary and advisory labels
Warning: dont stop taking unless your doctor tells you to
Take with food or just after a meal
Target BP for under 80s to start an antihypertensive
140/90mmHg or more
Target BP for over 80s
< 150/90mmHg
Pregnancy target BP
< 140/90mmHg
Renal disease patients target BP
< 140/90mmHg
Target BP for T1DM with no features of metabolic syndrome or albuminuria
< 135/85mmHg
Target BP with T1DM with albuminuria or features of metabolic syndrome
< 130/80mmHg
Avoid Alpha blockers in what condition?
History of syncope (in BPH patients) or postural hypotension
SE of alpha blocker - doxasozin
Orthastatic hypotension