CCRN EXAM (ACTUAL 2024-2026)ANSWERS
WITH VERIFIED CORRECT ANSWERS
What is aortic stenosis? - Answers__-Narrowing of the Aortic valve
What are manifestations of Aortic Stenosis? - Answers__- Increased afterload and need for coronary artery blood supply chest pain activity intolerance syncope sudden death where is renin secreted? - Answers__-juxtaglomerular apparatus
Describe the renin-angiotensin-aldosterone system - Answers__-renin is released by juxtaglomeruli in response to low BP, low flow to kidneys, or low serum Na.Renin is what converts angiotensinogen to angiotensin I angiotensin I is then converted to angiotensin II angiotensin II is a potent vasoconstrictor, which helps to raise BP, but it also illicits the release of aldosterone from adrenal glands aldosterone aids in Na reabsorption in the kidneys large concentrations ADH cause... - Answers__-increased tubule permeability to water urine is more concentrated 1 / 4
CCRN EXAM (ACTUAL 2024-2026)ANSWERS
WITH VERIFIED CORRECT ANSWERS
large concentrations of aldosterone cause... - Answers__- sodium reabsorption in distal tubules causes excretion of K+
what is the relationship between K and pH - Answers__- inverse
what occurs when the kidney senses increased H+? - Answers__-increased bicarb in proximal tubule
how do the kidneys contribute to RBC production? - Answers__-decreased hematocrit or O2 tension is sensed and the kidneys release erythropoeitin, which causes RBC to increase
a substance that has the ability to accept a free H+ ion is called a - Answers__-base
active form of vitamin D is called - Answers__-calcitriol
what does calcitrol control - Answers__-controls absorption of calcium and phos from food and regulaates parathyroid hormone
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CCRN EXAM (ACTUAL 2024-2026)ANSWERS
WITH VERIFIED CORRECT ANSWERS
what is a normal creatinine and what does it measure? - Answers__-0.5-1.1
end product of muscle and protein metabolism
what is a normal BUN and what does it measure? - Answers__-10-30 blood urea concentration
what does GFR measure? - Answers__-estimation of filtrate that is cleared in the glomerulus
what does urine osmolality refer to in relation to the kidneys?
- Answers__-kidneys urine concentration ability
how are the kidneys different in kids? - Answers__-larger in proximity GFR and renal blood flow are low at birth and gradually increase newborns have limited ability to regulate sodium
what are the components of the extracellular fluid? - Answers__-interstitial fluid plasma 3 / 4
CCRN EXAM (ACTUAL 2024-2026)ANSWERS
WITH VERIFIED CORRECT ANSWERS
transcellular water
what is the main electrolyte in ECF? - Answers__-sodium
where is sodium filtered frewly? - Answers__-glomerulus
what are manifestations of hyponatremia? - Answers__- seizure cerebral edema decreased LOC resp. failure
low sodium levels that are corrected too quickly can cause what? - Answers__-osmotic demyelination syndrome
high sodiums corrected too quickly can cause what? - Answers__-cerebral edema
what are manifestations of Hyperkalemia? - Answers__- irritable lethargic high pitched cry muscle weakness
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