Hypertension Flashcards
What classifies normal blood pressure?
<120mmHg/<80mmHg
What classifies elevated blood pressure?
120-129mmHg/<80mmHg
What is the classification of stage 1 hypertension?
130-139mmHg/80-89mmHg
What is the classification of stage 2 hypertension?
140+ mmHg/ 90+ mmHg
What is Isolated Systolic Hypertension (ISH)?
a condition in which SBP is 130+ mmHg, but DBP is < 80 mmHg that is associated with increased risk of cardiovascular events, stroke, and kidney disease progression
What is the relationship between blood pressure and CV morbidity/mortality?
there is a strong correlation between BP and CV morbidity and mortality
-the risk of negative outcomes is lowest at a BP of 115/75mmHg
-above 115/75mmHg, with each increment of 20mmHg SBP or 10 mmHg DBP, the risk of CV DOUBLES
What is primary hypertension?
aka essential HTN and accounts for 95% of cases, linked to: genetics, environmental factors, and aging
What are causes of secondary HTN?
-chronic kidney disease
-renovascular disease
-primary aldosteronism
-obstructive sleep apnea
-pheochromocytoma
-cushing’s syndrome
-hyper/hypothyroididm
-coarctation of the aorta
What substance/drugs may elevate blood pressure?
-alcohol
-antidepressants
-caffeine
-calcineurin inhibitors
-cocaine, amphetamines, other illicit drugs
-corticosteroids
-dietary supplements
-erythropoietin
-hormones
-NSAIDs, COX inhibitors
-oral decongestants
-stimulants
-vascular endothelial growth factor inhibitors
What are the complications associated with hypertension?
-heart disease
-stroke or transient ischemic attack (TIA)
-nephropathy/chronic kidney disease (CKD)
-retinopathy
-peripheral arterial disease (PAD)
-carotid artery disease (CAD)
-aortic aneurysm (AA)
What are modifiable risk factors for hypertension?
-current cigarette smoking and/or secondhand smoke exposure
-diabetes mellitus (DM)
-dyslipidemia
-overweight/obesity
-physical inactivity
-unhealthy diet
What are the relatively fixed risk factors for hypertension?
-CKD
-family history
-increased age
-low socioeconomic/educational status
-male sex
-obstructive sleep apnea
-psychosocial stress
How is blood pressure diagnosed?
use proper blood pressure technique and obtain 2 readings obtained on 2 or more occasions to estimate and classify BP
What is the optimal BP for someone with hypertension and <65 yo?
<130/80 mmHg
What is the target BP for someone with DM?
<130/80 mmHg
What is the target BP for someone with Kidney Disease?
SBP < 120 mmHg
What is the optimal BP for someone with hypertension and >65 yo?
140/90 mmHg
What is treatment for a pt with stage 1 HTN and ASCVD risk < 10%?
nonpharm therapy only and reassess in 3-6 months and initiate drug therapy if not at goal by 6 months
What is treatment for a pt with stage 1 HTN and ASCVD risk > 10% OR pt has DM or CKD?
initiate drug therapy
What is treatment for a pt with stage 2 HTN?
initiate drug therapy with at least 2 medications from different drug classes
What is the treatment for secondary prevention of HTN?
initiate drug therapy (typically at 130/80) where the number and type of drugs are influenced by co-morbid conditions
What drugs are Thiazides and Thiazide-like Diuretics?
-cholorothiazide
-hydrochlorothiazide
-chlorothalidone
-indapamide
-metolazone
What is the mechanism of action of Thiazide Diuretics?
blocks sodium (Na+) reabsorption in the distal tubule -> increased Na+/H2O excretion, K+ excretion, and decreased blood volume
What are the adverse effects of Thiazide Diuretics?
-hyperuricemia (elevated uric acid)
-hyperglycemia (high blood sugar)
-hypercholesterolemia (high cholesterol)
- hypertriglyceridemia (high triglycerides)
-hypokalemia (low potassium) THIS IS DOSE DEPENDENT
What labs must be monitored when taking Thiazide Diuretics?
potassium (K+)
Thiazides + ___________ have been shown to reduce the incidence of recurrent stroke.
ACE inhibitors
What diuretic may be preferred on the basis of it’s long half-life and proven CVD risk reduction?
chlorothalidone
Thiazides are generally ineffective in patients with a eGFR ________.
< 30 mL/min
Thiazide Diuretics must be used in caution with what disease state?
gout, if not on uric acid lowering therapy
What are the drug interactions of Thiazide Diuretics?
NSAIDs can weaken BP-lowering effects
What drugs are Loop Diuretics?
-bumetanide
-ethacrynic acid
-furosemide
-torsemide
What is the mechanism of action of Loop Diuretics?
block sodium (Na+) reabsorption in the ascending loop of Henle -> increased Na+/H2O excretion, K+ excretion, and decreased blood volume
What are the adverse effects of Loop Diuretics?
-hyperuricemia (high uric acid)
-hyperglycemia (high blood sugar)
-hypercholesterolemia (high cholesterol)
-hypertriglyceridemia (high TG)
-hypokalemia (low potassium) THIS IS DOSE DEPENDENT
What labs must be monitored while taking Loop Diuretics?
potassium (K+)
__________ is preferred for symptomatic relief in patients with heart failure or those at risk for fluid overload.
Loop Diuretics
What are the drug interactions of Loop Diuretics?
NSAIDs
What drugs are Potassium-sparing Diuretics?
amiloride and triamterene
What drugs are Aldosterone Antagonists?
spironolactone and eplerenone
What is the MOA of Potassium-sparing Diuretics?
interferes with the potassium sodium exchange in the distal tubule/collecting duct, excretes Na+ and H2O while retaining potassium (K+)