Hypertension Flashcards
What is stage 1 HT defined as?
Clinical blood pressure is 140/90 or higher and subsequent ABPM or HBPM average is 135/85mmHg or higher.
What is stage 2 HT defined as?
Clinical blood pressure is 160/100 mmHg or higher and subsequent ABPM or HBPM average is 150/95 mmHg or higher
What is stage 3 HT defined as?
Clinical systolic is 180 mmHg or higher OR clinical diastolic is 110 mmHg or higher
What blood pressure monitor should be used for patients with irregular heart rhythm?
Mannual BPM
Described the process of recording BP using an automated device.
The patient should be seated in a chair with a back rest and have their feet on the floor for at least 5 minutes while relaxed and not speaking.
Check the pulse. If any irregularity is found, use a manual device.
The arm should be supported at the level of the heart, resting on a cushion, pillow or arm rest. Place the cuff on 2cm above the brachial artery and align the “artery mark”. Use the correct cuff size as recommended by the manufacturer.
Repeat 3 times and record measurements.
Describe the process of checking BP using a mannual device
In addition to the steps above, follow the steps below.
Estimate the systolic beforehand:
* Palpitate the brachial artery
* Inflate cuff until pulsation disappears
* Deflate cuff
* Estimate systolic pressure
Then inflate to 30 mmHg above the estimated systolic level to occlude the pulse.
Place the stethoscope over brachial artery and deflate at rate of 2-3 mm/sec until you hear regular tapping sounds. Measure systolic (first sound) and diastolic(disappearance) to the nearest 2 mmHg.
What are examples of essential investigations to be carried out for HT
- Urinalysis – test for protein in urine
- Renal function – test for CKD
- Glucose – test for diabetes
- Lipid Profile – estimation of CV risk using e.g. Qrisk
- ECG – test for LV hypertrophy and/or heart conditions
What are examples of modifiable and non-modifiable risk factors for HT?
Modifiable:
* Alcohol consumption
* Smoking
* High salt diet
* Obesity
* Lack of physical exercise
* Diabetes
Non-modifiable:
* Age
* Race
* Family History
When recording BP if there is a difference of ________mmHg between both arms:
- What should you do?
- What happens if the same output occurs?
- If the reading between arms is 15 mmHg or greater then repeat measurements.
- If the readings between arms remains 15 mmHg or greater then measure subsequent blood pressure readings on the arm with the higher reading.
What lifestyle advice should be given to patients with HT to reduce CVD risk?
- Reduce salt intake to 5-6g per day
- Moderate alcohol consumption
- Increased consumption of veg, fruit and low-fat dairy products
- Reduction of weight to BMI of 25kg/m2 and of waist circumference to <102cm in men and <88cm in women
- Regular exercise (i.e. at least 30 minutes moderate intensity exercise 5-7 days a week)
- Quit smoking
- Relaxation therapies
- Discourage excessive consumption of coffee and other caffeine rich products
What are examples of ARBs and their doses?
What are some examples of ACEi and their doses?
What are CI to ACEi and ARB?
- Angioneurotic oedema (not for ARB)
- Pregnancy / breastfeeding
- Diabetes Mellitus (or eGFR <60mL/min) taking Aliskiren
Valsartan:
* Cholestasis
What are side-effects of ARBs and ACEi?
- Renal impairment
- Hyperkalamiea
- Angio-oedema
- Dizziness
- Abdominal pain, cough, diarrhoea, headache, vertigo, vomiting, postural hypotension
What level of K+ would you stop ACEi/ARB?
What if the values were lower than this?
- K+ >5mmol/L investigate and stop/reduce dose of K+ sparing drugs or nephrotoxic drugs
- K+ 5 – 5.9mmol/L Reduce dose and check K+ in 5-7 days
- K+ >6mmol/L Stop
What interactions can occur with ACEi and ARBs?
What monitoring should occur with ACEi and ARBs?
Baseline:
* * Renal function and U&Es
There after:
* * Renal function and U&Es 1-2 weeks after starting treatment and after each dose increase. Thereafter, renal function and U&Es annually
* * BP 4 weeks after dose titration
What dose of indapamide is used?
2.5mg OM
Should CCB (dihydropyridines) be used in pregnancy?
Best avoided unless no alternative
CI to indapamide
- Addison’s disease
- Hypercalcaemia
- Hyponatraemia
- Refractory hypokalaemia
- Symptomatic hyperuricemia
- Severe renal impairment (CrCl <30 – lack of efficacy)
- Severe liver impairment
- Pregnancy / breastfeeding
Cautions to indapamide
- Gout (Exacerbate)
- Diabetes (Exacerbate)
- Systemic lupus (Exacerbate)
- Risk of hypokalaemia
- Acute prophyrias
Monitoring of indapamide?
Baseline
* Renal function
* U&Es
* LFTs
Thereafter
* Renal function and U&ES regularly thereafter
* LFTs if suspected liver impairment
* BP 4 weeks after titration then annually
* Monitoring of glucose in diabetes
Are B-blockers reccomended in HT treatment?
Beta-blockers are not recommended for the initial treatment of hypertension. Recent data shows that beta blocker treatment is inferior to other treatments in terms of cardiovascular protection. This, plus the increased risk of new onset diabetes, means that beta blockers are no longer first line treatment for hypertension. They are sometimes used in the treatment of ‘resistant hypertension’ (stage 4) in combination with a CCB, ACE/ARB & thiazide.
What are cautions to ACEi and ARBs
- Diabetes (may lower blood glucose)
- First dose hypotension
- Black African or African-Caribbean origin
- Aortic or mitral valve stenosis
- Renal impairment – hyperkalaemia & ADR more common
- Hepatic impairment
- Elderly
- Diuretics
Examples and doses of dihydropyridines