PVD and HTN Flashcards
Peripheral Vascular resistance (PVR)
pressure the heart has to work against in the periphery (with HTN, arteries harden–>more pressure–>increased PVR)
use of diuretics and BP
diuretics decrease body fluid–>decreased BP
HTN and dementia
the microscopic arteries in brain can hemorrhage–>brain cells die
effects of beta blockers
slow HR, lower BP, increase preload (so it ADDS fill time to the heart. this will reduce the workload of the heart bc it gets a good fill)
CO x PVR =
BP
why should we “start low, go slow” with older adults and HTN meds?
older adults have less circulating albumin (less protein for binding) so more meds stay available to hit receptor sites which exacerbates the response from the meds
Older adults are more sensitive to volume depletion
DASH diet
diet low in sodium and fat to lower BP (effect is seen one week after starting diet)
JNC 8 HTN guidelines
for 60 years and older: start treatment at 150/90 or above
for younger than 60: start treatment at 140/90 or above
what’s the #1 reason PTs stop taking their BP meds?
they reach their BP target
Buerger’s disease
Claudication in feet and lower extremities worse at night; causes ischemia and fibrosis of vessels in extremities with increased sensitivity to cold. Ulcerations and gangrene occur on digits. Cause unknown but is associated with smoking.
Raynaud’s disease
Painful vasospasms of arteries and arterioles in extremities, especially digits; causes red-white-blue skin color changes on exposure to cold or stress; cause unknown, occurs more in women, and may be autoimmune because it is associated with many rheumatic diseases like systemic lupus erythematosus
nursing care for Raynaud’s and Buerger’s
Teach patient about smoking cessation, avoid cold by wearing gloves and warm clothes, manage stress, avoid caffeine; teach patient taking nifedipine to avoid grapefruit and grapefruit juice to prevent severe adverse effects, including possible death; teach patients on vasodilators about side effects such as facial flushing, hypotension, headaches.
MONA
mneumonic for heart attacks: morphine (to reduce anxiety), oxygen, nitro, aspirin
But give in this order: ONAM
1 ounce =
30 mL
1 tablespoon=
15 mL