Intro to Hypertension Flashcards
Blood Pressure (BP) =
Cardiac Output (CO) x Systemic Vascular Resistance (SVR)
To control blood pressure, adjust:
- Volume of blood the heart pumps
- Diameter of arteries
- Volume of blood in the bloodstream
What are the primary factors controlling blood pressure?
Sympathetic nervous system
Renin-Angiotensin-Aldosterone System (RAAS)
Plasma volume (kidneys)
___% of CV deaths are associated with HTN
41
Starting at 115/75 mm Hg, every ↑ __ mmHg systolic & __ mmHg diastolic blood
pressure → risk of death from heart disease or strokes DOUBLES
20; 10
Blood pressure stages
Normal BP = <120/<80 mm Hg
Elevated BP = 120-129/<80 mm Hg
Hypertension Stage 1 = 130-139 or 80-89 mm Hg
Hypertension Stage 2 = ≥140 or ≥90 mm Hg
Prehypertension → hypertension (~___% within 4 years)
50
Features of Primary essential HTN
● Most common (90-95% of the population)
● No obviously underlying cause
● Often due to multiple risk factors (obesity, sleep apnea, increased salt intake, excessive alcohol use, age, etc.)
~___% of pts have HTN secondary to specific identifiable causes
5-10
Secondary HTN causes
● Sleep apnea
● Drug-induced or drug-related
● Chronic Kidney Disease
● Primary aldosteronism
● Renovascular disease
● Pheochromocytoma
● Coarctation of the aorta
● Thyroid or parathyroid disease
● Long-term corticosteroid therapy & Cushing syndrome
The USPSTF recommends screening for high blood pressure in adults aged ____ years or older
18
Use the mean of ___ readings when obtaining patient BP
2