WGU D236 PATHOPHYSIOLOGY (Worksheets) SECTION 1-7|A+ GRADED.

WGU D236 PATHOPHYSIOLOGY (Worksheets) SECTION 1-7|A+
GRADED.
What are some reasons for a patient choosing one over the
other? - ANS-Hemodialysis uses a machine to pump blood from
the body in one tube while dialysate (made of water, electrolytes
and salts) is pumped in the separate tube in the opposite
direction. Waste from the blood diffuses through the
semipermeable membrane separating the blood from the
dialysate.
Peritoneal Dialysis does not use a machine, but instead injects a
solution of water and glucose into the abdominal cavity. The
peritoneum acts as the membrane instead of dialysis tubing. The
waste products diffuse into the abdominal cavity and the waste
solution is then drained from the body.
Peritoneal dialysis offers continuous filtration and is less
disruption to the patient's daily routines. However, it does require
some training of the patient and is not recommended for
individuals who are overweight or have severe kidney failure.
Hemodialysis provides medical care, but 3 times a week for
several hours sitting at a hospital or clinic. Individuals with acute
kidney failure are recommended to use hemodialysis.
How does homeostasis and maintaining optimal physiological
health impact your wellbeing? - ANS-Homeostasis acts to create
a constant and stable environment in the body despite internal
and external changes. Proteins and other cellular processes
require optimal conditions in order to carry out their functions.
Alterations in pH, salt concentration, temperature, glucose levels,
etc. can have negative effects on health, so it is vital for
mechanisms that regulate homeostasis to function properly for
maintaining good health
What is Starling's Law of Capillary forces?
How does this explain why a nutritionally deficient child would
have edema? - ANS-Starling's Law describes how fluids move
across the capillary membrane. There are two major opposing
forces that act to balance each other, hydrostatic pressure
(pushing water out of the capillaries) and osmotic pressure
(including oncontic pressure, which pushes fluid into the
capillaries).
Both electrolytes and proteins (oncontic pressure) in the blood
affect osmotic pressure, high electrolyte and protein
concentrations in the blood would cause water to leave the cells
and interstitial space and enter the blood stream to dilute the high
concentrations.
On, the other hand, low electrolyte and protein concentrations (as
seen in a nutritionally deficient child) would cause water to leave
the capillaries and enter the cells and interstitial fluid which can
lead to edema.
How does the RAAS (Renin-Angiotensin-Aldosterone System)
result in increased blood volume and increased blood pressure? -
ANS-A drop in blood pressure is sensed by the kidneys by low
perfusion, which in turn begins to secrete renin.
Renin then triggers the liver to produce angiotensinogen, which is
converted to Angiotensin I in the lungs and then angiotensin II by
the enzyme
Angiotensin-converting enzyme (ACE). Angiotensin II stimulates
peripheral arterial vasoconstriction which raises BP.