Hypertension Flashcards

0
Q

What do you ACE inhibitors do?

A
Decrease angiotensin II 
Act as vasodilators
Inhibit aldosterone
Potentiates bradykinin
Decreases BP
Decreased cardiac load
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1
Q

What are the drugs used for hypertension?

A

ACE inhibitors/ARB
Calcium Channel blockers
Diuretics (thiazide)

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2
Q

Where do you ACE inhibitors act?

A

Heart
Kidney
Brain

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3
Q

What are ACE inhibitors used for?

A
MI
Hypertension
Cardiac failure
Diabetic nephropathy
IHD risk
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4
Q

What are the ADR’s of ACE inhibitors?

A
Dry cough
Angio oedema
Renal failure
Hyperkalaemia
Hypotension
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5
Q

Name two examples of ACE inhibitors

A

Lisinopril

Ramapril

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6
Q

What do you angiotensin II receptor blockers do?

A

Inhibit vasoconstriction

Inhibit aldosterone

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7
Q

What are ARB’s is used for?

A
Young hypertensive patients
Diabetic hypertensive patients
LVH hypertensive patients
Heart failure
Diabetic nephropathy
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8
Q

What are the ADR’s ours of a ARB’s?

A

Teratogenic
Renal failure
Hyperkalaemia

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9
Q

Name two ARB’s

A

Losartan

Valsartan

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10
Q

What do calcium channel blockers do?

A

Vasodilates peripheral, coronary and pulmonary arteries by binding to L-type calcium channels

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11
Q

What are the three types of calcium channel blockers?

A

Dihydropyridines
Phenylalkylamines
Benzothiazepines

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12
Q

What is the pk of dihydropyridines?

A

Highly protein bound over 90%
Metabolised by the liver
Good oral absorption

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13
Q

What are the ADRs of dihydropyridine?

A

Sympathetic nervous system activation leading to tachycardia and palpitations, flushing, sweating, throbbing headache
Oedema
Gingival hyperplasia

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14
Q

What do you phenylalkylamines do?

A

Impede calcium transport across myocardial and vascular smooth muscle cell membrane
Prolongs action potential
Peripheral vasodilation and decreases cardiac preload and myocardial contractility

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15
Q

Give an example of Phenylalkylamine

A

Verapamil

16
Q

What are the ADRs of Phenylalkylamines?

A

Constipation
Bradycardia
Decrease myocardial contractility

17
Q

What do Benzothiazepines do?

A

Same as verapamil
Less aggressive
Less effect on AV node

18
Q

What are the ADRs of benzodiazepines?

A

Bradycardia

Less negative inotropic effect than verapamil

19
Q

Give an example of a Benzothiazepine

A

Disulfiram

20
Q

What do thiazide diuretics do?

A

Reduce distal tubular sodium reabsorption

Reduce BP initially by decreasing blood volume later by decreasing TPR

21
Q

What are the ADRs of thiazide diuretics?

A
Gout
Impotence
Impaired glucose tolerance
Hypokalaemia
Increased cholesterol
22
Q

What are the nice guidelines for hypertension?

A

Under 55 is ace inhibitor or angiotensin receptor blocker
Over 55 then give calcium channel blocker or diuretic
If these don’t work combine therapy

23
Q

What other drugs can be used for hypertension?

A

Alpha blockers
Direct renin inhibitors
Beta-blockers

24
Q

What is the aetiology of heart failure?

A

Ischaemic heart disease
Hypertension
Cardiomyopathy
Valve disease

25
Q

What drugs are used in heart failure?

A

Spirinolactone
Beta blocker
Statins