Bp Flashcards
What can it cause
Stroke, heart disease, peripheral vascular disease
Hypertension figures
More than 140 systolic / 90 diastolic, 1 in 4 adults
Bp= … X …
Bp= CO X TPR
CO= … X …
CO= HR X SV
Initial treatment
Lifestyle change
Targets for hypertensives (4)
Kidney, heart, blood vessels, brain
A B C D
Ace inhibitors, beta blockers, calcium channel blockers, diuretics
Renin angio tensin system
Renin converts angiotensinogen to angio tensin I, ace enzyme converts it to angiotensin II which is active
What does angiotensin II do
Aldosterone to increase blood vol, vasoconstriction
Captopril
Ace inhibitors
Enalapril
Ace inhibitors
Trandolapril
Ace
Ramipril
Ace
Lisinopril
Ace
Action of ace inhibitors
Block the at 1 receptors so prevent angiotensin 1 being converted into angiotensin 2
Ace side effects
Dry cough in 10-20% of users
Losartan
Angiotensin receptor antagonist
Candesartan
Angiotensin receptor antagonist
Valsartan
Angiotensin receptor antagonist
Action of Angiotensin receptor antagonist
Block the receptors AT1 and cause vasodilation don’t cause the dry cough like normal ace
Action of beta blocker
Stop the response of NS on the heart by blocking the B1 receptors, reduce CO, reduce renin release and NS vasoconstriction
Labetalol
Beta blocker
Atenolol
Beta blocker
Bisoprolol
Beta blocker
Metoprolol
Beta blocker
Propranolol
Beta blocker
Sotalol
Beta blocker
Side effects of beta blockers
Can be bad for asthma as can cause effect on B2 in the lungs
Action of alpha blocker
Block action of adrenaline and nor adrenaline on blood vessels cause dilation
Prazosin
Alpha blocker
Doxazosin
Alpha blocker
Terazosin
Alpha blocker
Action of calcium channel blockers
Dilate arteries, reduce Herat contra tiling and reduce HR
Nifedipine
Calcium channel blocker
Amlodipine
Calcium channel blocker
Nicardipine
Calcium channel blocker
Verapamil and diltiazem
Calcium channel blocker DONT USE WITH beta blockers
Interaction of Calcium channel blocker
Interact with grapefruit juice
Action of thiazide diuretics
Increase urine output so decrease blood vol and bp, actin kidneys by stopping Na being pumped back in
Indapamide,
Thiazide diuretics
Chlortalidone
Thiazide diuretics
Bendroflumethiazide
Thiazide diuretics
Side effects of thiazides
Hypokalaemia, gout, erectile disfunction
Amiloride and spironolactone
Potssium sparing diuretics
Furosemide
Loop diuretic for extreme hypertension
Drug therapy for hypertension
Less than 55. More than 55 or black
A or B. c or D.
A+C or A + D
A + C + D
Ace results
Block renin angiotensin cycle
B blocker result
Decrease HR, dilate arteries, reduce renin
Calcium channel blockers result
Decrease HR, dilate arteries
Diuretics results
Increase urine output thus reducing total blood volume