Cardiovascular drugs 2 Flashcards
Hypertension
Clinic BP > 140/90 +
ABPM/HBPM > 135/85
Next steps if clinic BP > 140/90
- Take a second measurement during the consultation
- If the second measurement is substantially different from the first, take a third measurement
- Record the lower of the last 2 measurements as the clinic blood pressure
Activities that can affect BP reading
Cuff too small Cuff over clothing Back/feet unsupported Legs crossed not resting(3-5 mins) Patient talking Pain
ABPM
If clinic blood pressure is between 140/90mmHg and 180/120mmHg, offer ambulatory blood pressure monitoring (ABPM) to confirm the diagnosis of hypertension
If ABPM is unsuitable or the person is unable to tolerate it, offer home blood pressure monitoring (HBPM) to confirm the diagnosis of hypertension
HBPM
- Two consecutive seated measurements, at least 1 minute apart
–blood pressure is recorded twice a day for at least 4 days and preferably for a week
–measurements on the first day are discarded – average value of all remaining is used.
ABPM/HBPM + clinic BP outcomes
Normotensive by both methods (true normotension)
Hypertensive by both methods (true hypertension)
Hypertensive based on office BP and normotensive by ABP/HBPM (white-coat hypertension)
Causes of secondary hypertension
Primary(essential) > 90%
Secondary < 10%
Renal disease - renovascular disease, renal parenchymal disease
Endocrine disease - Conn’s, cushing’s, phaeochromocytoma
Drugs - COC pills, steroids, nsaids, cocaine, epo
Vascular
Other - obstructive sleep apnoea, pregnancy included
Contributory factors to hypertension
- Increase in BMI
- > 14 units of alcohol
- Salt intake
- Lack of exercise
- Stress
- Caffeine
Cardiac output
HR x SV
BP formula
CO x SVR(systemic vascular resistance)
Hypertension symptoms
- Headache
- Blurred vision
- Dizziness
- SOB
- Palpitations
- Epistaxis
Hypertension - examination
- Cardiovascular system
- Abdomen
- Fundoscopy