Adult Care 1 Exam 3 Flashcards
Renal and Musculoskeletal
What are the 2 functions of the kidney?
Regulatory and Hormonal
What is the regulatory function of the kidney?
Controls fluid and electrolyte balance by using glomerular filtration, tubular reabsorption, and tubular secretion.
What is glomerular filtration?
a process the kidneys use to filter excess fluid and waste products out of the blood
What is a GFR?
glomerular filtration rate, indicates how well our kidneys are functioning (filtration), a decreased GFR indicates kidney disease
What does a decreased GFR put the patient at risk for?
adverse reactions with medications, calls for lower doses
What does tubular reabsorption mean in regards to the kidneys?
water and electrolytes being reabsorbed and returned to the blood, keeps output between 1-3 L per day
What does tubular secretion mean?
Allows substances to move from blood to urine
What does renin do within the body?
Regulates BP by raising it through the RAAS, triggered by a decrease in BP (blood flow) in the arteries–> stimulates aldosterone –> sodium goes where water follows –> increase in BP and volume
What does EPO do within the body?
triggers the RBC production in bone marrow
What do prostoglandins do within the body?
dilate and constrict kidney vessels to keep glomerular filtration at a constant rate
Activated Vitamin D regulates what?
Calcium
What is the hormonal function of the kidney?
Controls RBC formation by erythropoietin
Maintains blood pressure by RAAS
Vitamin D Activation by regulating calcium balance
What does the nephron do in the kidneys, what is it nicknamed as?
helps form urine by filtering waste and products and water from the blood, “functional unit of the kidney”
What is a unique characteristic of the kidneys that no other organ does?
self regulate blood pressure by selectively constricting or dilating the afferent or efferent arterioles so GFR Is consistent even if there is systemic changes in BP
When do the kidneys not self regulate their blood pressure?
systolic blood pressure is less than 65 or 70
What is the renal threshold?
When the kidneys can not absorb the amount of glucose in the blood stream, so it is excreted in the urine to compensate
What can NOT pass the glomerular wall?
RBC, large particles
What is a urinalysis?
A test that looks at waste products from the kidneys, it can help detect some urologic disorders
What type of collection do you need to do for a urinalysis?
Early morning specimen, as it provides a more concentrated sample of waste products. Needs to be a midstream catch
What does a urinalysis look at?
color, clarity, concentration, presence of different drugs, ketones bodies, glucose, protein
What is NOT normally found in urine?
ketone bodies, leukocyte esterase, protein, glucose
–> can indicated diabetes, fat metabolism, infection, or cancer
What is a specific gravity in regards to a urine sample?
concentrate of particles, electrolytes, and waste
(high = dehydration or kidney disease, low= diluted urine, diuretics)
What does turbidity look at in regards to urine?
if it is clear or cloudy
What is leukocyte esterase?
enzyme found in WBC (neutrophils), indicates a UTI
leuko means white, cyte means cell, enzymes end in -ase. WBC are found in infections (UTIs)