Anti-HTN Flashcards
What anti-HTN drugs are included in the Diuretics class?
Thiazide: Indapamide
Loop
Potassium sparing
What anti-HTN drugs are included in the Sympathetic Nervous System Drugs - 𝛼2 agonist class?
Clonidine, Methyldopa
What anti-HTN drugs are included in the Sympathetic Nervous System Drugs - 𝛼1 blocker class?
Prazosin
What anti-HTN drugs are included in the Sympathetic Nervous System Drugs - Β-blockers class?
Propranolol, Nebivolol (-olol)
What anti-HTN drugs are included in the Sympathetic Nervous System Drugs - Combined 𝛼1-β blockers class?
Carvedilol, Labetalol
What anti-HTN drugs are included in the Vasodilators - Drugs acting though NO class?
Hydralazine, Sodium Nitroprusside
What anti-HTN drugs are included in the Vasodilators - D1 agonist class?
Fenoldopam
What anti-HTN drugs are included in the Vasodilators - Calcium channel blockers class?
Nifedipine, Amlodipine (-dipine), Diltiazam, Verapamil
What anti-HTN drugs are included in the Inhibitors of RAS - ACE-I class?
Enalapril, Lisinopril
-pril
What anti-HTN drugs are included in the Inhibitors of RAS - ARBs class?
Losartan, Valsartan
-artan
What condition leads to an increased incidence of renal failure, coronary disease, HF, and stroke?
HTN
If a pt is considered stage 1 HTN (SBP 130-139 or DBP 80-89), how many drugs should be used?
1
If a pt is considered stage 2 HTN (SBP ≥ 140 or DBP ≥ 90), how many drugs should be used?
2
What is considered first line of HTN treatment?
Lifestyle modifications
What is the most common cause of failure of antihypertensive treatment?
Non-compliance
How much does the efficacy in decreased BP differ between anti-HTN drugs?
Very little
Should BP lowering be gradual or abrupt?
Gradual without compromising vital organs
What is the effect of combining drugs from different groups for treatment of HTN?
Increases efficacy and may decrease toxicity
Thiazide diuretics (Indapamide) is a direct vasodilator used in the treatment of mild to moderate HTN and lowers BP by how much?
10-15 mmHg
What are notable SE’s of diuretics with respect to HTN tx?
Reduced glucose tolerance
Increased plasma lipid concentration
avoided w lower doses
What is one of the initial recommended drugs for HTN treatment that acts by counteracting Na+ and H2O retention?
Thiazides
What populations are thiazide diuretics more effective in?
African Americans, elderly
What drug class has the following MOAs?
- ↓ BP by reducing sympathetic vasomotor tone
- Adrenergic receptor action
- Interruption of efferent sympathetic pathway
- Activate baroreflexes to cause Na+ and H2O retention
- Best when combined w diuretic
Sympatholytics
The following is the MOA for what drugs?
Stimulation of medullary alpha2 adrenergic receptors leading to decreased peripheral sympathetic nerve activity
Clonidine, Methyldopa
What drug used to treat HTN is safe in pregnancy?
Methyldopa
What drugs have the following therapeutic effects?
- ↓ sympathetic outflow/ renin secretion leading to ↓ BP
Clonidine, Methyldopa
Does Clonidine or Methyldopa decrease HR and CO more?
Clonidine
What are the adverse effects of centrally acting sympatholytics? (4)
Sedation/ CNS effects
Xerostomia
ED
Hemolytic anemia/ + Coombs test (Methyldopa)
Why are centrally acting sympatholytics not recommended for monotherapy?
CNS effects (only if refractory pts)
What can be caused by sudden withdrawal of clonidine?
Hypertensive crisis
What is the MOA of Prazosin?
Specifically blocks alpha1 adrenergic receptors
What drug has the following indications/ therapeutic effects?
Reduce NE vasoconstriction to dilate arteries/ veins
↓ peripheral resistance = ↓ BP
Do not adversely affect plasma lipids
Beneficial in BPH
Prazosin
With what class of drugs is the “first dose phenomenon” evident? (postural hypotension)
Alpha1- adrenergic antagonists
Besides postural hypotension, what other adverse effects are seen with alpha1- adrenergic antagonists?
Na+ and water retention
Reflex tachycardia
What drug class decreases BP by blocking beta-adrenergic receptors in the heart to reduce CO, in the kidneys to reduce renin secretion, and in the CNS to reduce sympathetic vasomotor tone?
Beta-blockers (propranolol)
What drug class is combined with other drugs to counteract reflex tachycardia and increase renin secretion?
Beta-blockers (propranolol)
What drug class is no longer recommended for monotherapy of HTN?
Beta blockers
What is the preferred drug for pts with angina, post MI, migraine, and HF?
Beta blockers
What is the least preferred drug for pts with high physical activity, African heritage, asthma, DM, hypercholesterolemia, and PVD?
Beta blockers
What beta blocker leads to increase NO = direct vasodilation = decreased ED?
Nebivolol