Hypertension Flashcards
What do you ACE inhibitors do?
Decrease angiotensin II Act as vasodilators Inhibit aldosterone Potentiates bradykinin Decreases BP Decreased cardiac load
What are the drugs used for hypertension?
ACE inhibitors/ARB
Calcium Channel blockers
Diuretics (thiazide)
Where do you ACE inhibitors act?
Heart
Kidney
Brain
What are ACE inhibitors used for?
MI Hypertension Cardiac failure Diabetic nephropathy IHD risk
What are the ADR’s of ACE inhibitors?
Dry cough Angio oedema Renal failure Hyperkalaemia Hypotension
Name two examples of ACE inhibitors
Lisinopril
Ramapril
What do you angiotensin II receptor blockers do?
Inhibit vasoconstriction
Inhibit aldosterone
What are ARB’s is used for?
Young hypertensive patients Diabetic hypertensive patients LVH hypertensive patients Heart failure Diabetic nephropathy
What are the ADR’s ours of a ARB’s?
Teratogenic
Renal failure
Hyperkalaemia
Name two ARB’s
Losartan
Valsartan
What do calcium channel blockers do?
Vasodilates peripheral, coronary and pulmonary arteries by binding to L-type calcium channels
What are the three types of calcium channel blockers?
Dihydropyridines
Phenylalkylamines
Benzothiazepines
What is the pk of dihydropyridines?
Highly protein bound over 90%
Metabolised by the liver
Good oral absorption
What are the ADRs of dihydropyridine?
Sympathetic nervous system activation leading to tachycardia and palpitations, flushing, sweating, throbbing headache
Oedema
Gingival hyperplasia
What do you phenylalkylamines do?
Impede calcium transport across myocardial and vascular smooth muscle cell membrane
Prolongs action potential
Peripheral vasodilation and decreases cardiac preload and myocardial contractility