Lecture 3 Blood Pressure-(dobies slide 6 additional) Flashcards
Blood pressure is the (veins/arterial) wall force due to the hear pumping blood
arterial
- Determined by the force of the blood pumped
- Amount of blood pumped
- Size of the arteries
- Flexibility of the arteries
- -all of these describe affects of ?
4 factors affect blood pressure
name three things that blood pressure is dependent on (or name more)
Activity Temperature Diet Emotional state Posture Physical state Medication use
Blood pressure is expressed in ____
mm of mercury
by convention it is measured in (left/right) arm
right
left arm can differ as much as \_\_ mm HG A) 3 B)4 C)5 D)9
5
T/F pt can sit, reclin, or be supine when taking blood pressure
T
The renin-angiotensin system or RAS regulates blood pressure and fluid balance in the body. When blood volume or sodium levels in the body are low, or blood potassium is high, cells in the kidney release the enzyme, renin. Renin converts angiotensinogen, which is produced in the liver, to the hormone angiotensin I. An enzyme known as ACE or angiotensin-converting enzyme found in the lungs metabolizes angiotensin I into angiotensin II. Angiotensin II causes blood vessels to constrict and blood pressure to increase. Angiotensin II stimulates the release of the hormone aldosterone in the adrenal glands, which causes the renal tubules to retain sodium and water and excrete potassium. Together, angiotensin II and aldosterone work to raise blood volume, blood pressure and sodium levels in the blood to restore the balance of sodium, potassium, and fluids.
If the renin-angiotensin system becomes overactive, consistently high blood pressure results.
in clinic typically do RAS
blood pressure is given in what order diastolic/systolic or systolic/diastolic
systolic/diastolic
T/F hypertension is not diagnosed by a single high reading
T
- Compliance with medication
- Reinforce importance of compliance
- Silent disease
- -all of theses are what?
these are some reasons we screen in office for blood pressure
T/F you wont be able to see the effects of hypertension in eye
F May see effects of the disease on vision or the eye
example - hypertensive retinopathy
T/F when a pt comes in with high blood pressure you make every effort to avoid systemic absorption of the topical eye drops
T
(gluacoma/cataracts/hypertensive retinopathy) is a manifestation of the diesease process of increased blood pressure in the eye
hypertensive retinopathy
In hypertensive retinopathy retinal arteries (enlarge/narrow) and constrict
narrow
In hypertensive retinopathy blood vessels (close up/leak) causing hemorrhages and exudates
leak
In hypertensive retinopathy vessels leak and blood spreads and look like a ___
flame
small areas of local hypoxia know as ___ __ spots in the nerve fiber layer of the retina
cotton wool spots
_____ hypertension is when the optic nerve may be affected and swollen
malignant
_____ is another name for when the optic nerve becomes swollen
papilledema
- Sub-conjunctival hemorrhage
- Retinal artery occlusion
- Retinal vein occlusion
- Retinal artery macro-aneurysms
- Exudative retinal detachments
- Oculo-motor palsies
- -all of these could be from ?(gluacoma/hypertension/cataract surgery)
hypertension