Renal Flashcards
In ADPKD, _______ is nonfunctional and what is it’s function?
Polycystin 1, transmembrane glycoprotein important for connective tissue cohesion in cell-cell and cell-ECM interactions
Ethylene glycol can lead to __________ with vacuoles degeneration and ballooning of the _________. You can also see ______ crystals in the tribe
Acute tubular necrosis, proximal tubular cells, oxalate
Chronic kidney disease presents with ______phosphatemia, ________parathyroidism, and ______ calcitriol levels
Hyperphosphatemia, secondary hyperparathyroidism, decreased calcitriol
Chlorthalidone is a _____ diuretic and it can lead to _____kalemia. This explains muscle weakness and cramping
Thiazides, Hypokalemia
______ is a oxidase positive Gram negative rod that is a common cause of UTI with indwelling catheters
Pseudomonas
Para-aminohippuric acid has the lowest concentration in which part of the nephron?
Bowman’s space, it is not reabsorbed by any part of the nephron.
Hypercalcemia in Multiple myeloma is result of ________ induced by tumor cells.
Osteoclasts
PTHrP inc serum Ca by promoting _____ Activity and has NO effect on 1,25 vit D.
Osteoclasts
Diffusion speed across a semipermeable membrane increases with
- Higher molecular concentration gradients
- larger membrane surface areas
- inc solubility of the diffusing substance
Increased levels of both renin and aldosterone are indicative of ________ hyperaldosteronism. Three causes are
Secondary
Renovascular disease (juxtaglomerular cell tumor), malignant hypertension, renin secreting tumors
Imunnofluoresence of post strep glomerulonephritis shows ___, ___, ____
IgG, IgM, C3 in the mesangium and basement membrane
Overflow incontinence is common in diabetics and leads to ________ postvoid residual volume.
Increased
Loop diuretics act at the ______ of the loop of Henle and block the _____ channel
Thick ascending limb, Na/K/Cl
The ureteric bud ultimately gives rise to the ____ system of the the kidney and includes. Failure of this to form leads to ________
Collecting
-collecting tubules and ducts, major and minor calyces, renal pelvis, ureters
Potter sequence
The metanephric blastoderm gives rise to the (5 structures)
Glomeruli Bowman’s space Proximal tubules Loop of henle Distal Convoluted tubules
Filtration fraction equals
GFR/RPF
Net filtration pressure equation
(Pc-Pi)-(Oc-Oi)
Hydrostatic pressures-oncotic pressures
What amino acid needs to be metabolized by the kidney to maximize acid excretion?
Glutamine
This leads to ammonium and bicarbonate
ADH acts in the ____ (part of the kidney). Which part of this does it specifically act on to inc urea and water reabsorption
Collecting ducts, medullary
Spironolactone is a _________ antagonist and acts in what part of the kidney?
aldosterone, cortical collecting duct
thiazide diuretics block _____ reabsorption in what part of the kidney
Na/Cl, distal collecting tubule
acetazolamide blocks ______ in what part of the kidney
carbonic anhydrase, proximal tubule
The urachus is a remnant of the _______ that connects the bladder with the yolk sac during fetal development. Failure of this to separate results in discharge of urine form the umbilicus
allantois
failure of the central part of the urachus to separate leads to a urachal _____
cyst
erythropoeisis stimulating agents treat anemia of _________ but are associated with inc risk of _______ events–> ______ hypertension
chronic disease, thromboembolic, worsening
In absence of ADH tubular fluid is most concentrated in what part of kidney?
junction between descending and ascending loop of henle (BOTTOM of loop of henle)
-highest osmolarity occurs at the bottom of the loop of henle
Glucose is normally filtered at the glomerulus but if something inhibited this, clearance of glucose would be most similar to ______
inulin, which can be approximated as being equal to GFR
acute renal allograft rejection can be _____ or _____ mediated and is seen within ____ after transplant
antibody, cell, 6 months
see inc creatinine, malaise
what type of urinary incontinence is associated with urethral hypermobility or dec urethral sphincter tone
stress incontinence, from coughing or sneezing
what type of urinary incontinence is associated with detrusor hyperactivity
urge, sudden overwhelming urge to urinate
what type of urinary incontinence is associated with impaired detrusor contractility or bladder outlet obstruction
overflow, incomplete emptying and persistent involuntary dribbling
_____ renal allograft rejection manifests months to years after transplantation and presents with worsening ____, ____ creatinine and _______ fibrosis
chronic, HTN, rise in serum, obliterative vascular
A dense interstitial mononuclear infiltrate is characteristic of ______ graft rejection
acute (< 6 months)
Vascular fibrinoid necrosis and neutrophil infiltration of the arterioles, glomeruli, and peritubular capillaries are characteristic of _____ graft rejection
hyperacute (minutes to hours)
Aldosterone antagonists (spironolactone, eplerenone) decrease the secretion of __ and __ by what part of the kidney
K+,H+, collecting tubule
Aldoesterone increases the number of basolateral_____ and apical _____ found on ____ cells in what part of the kidney
Na/K ATPase, sodium, principal, cortical collecting ducts
____1 receptors are located on the jutxtaglomerular cells , which stimulate the release of _____ from sympathetic activation
beta, renin
beta adrenergic antagonists inhibit ____ release in the kidney which leads to a ____ in angiotensin 1/2, and aldosterone levels
renin, decrease
Deposition of ____ in Bowman’s space is an essential pathological step in cresecent formation
fibrin
Acute ureteral obstruction leads to _____ GFR
decreased
Vasopressin causes a ___ receptor mediated ____ in water and urea permeability at the inner medullary collecting duct. You get a resulting ___ in urea absorption (dec renal clearance) that _____ the medullary osmotic gradient
V2, increase, rise, enhances
In pt with extensive smoking history, painless hematuria, polycythemia (elevated hematocrit), renal mass
renal cell carcinoma, most patients asymptomatic and incidental imaging finding
Loss of _______ is responsible for the thrombotic complications of nephrotic syndrome
antithrombin III
The most common cause of fever and fatigue with new onset cardiac murmur is _______. Diffuse prolierative glomerulonephritis secondary to circulating ____________ deposition may lead to renal insufficiency
infective endocarditis, immune complex
What shows up in the urine with early diabetic signs of renal failure? And how does this happen
albumin, normally GBM has negatively charged molecules blocking negatively charged molecules (like albumin) from leaking out but with diabetes there is a progressive loss of this charge
in tumor lysis syndrome, uric acid precipitates at ____ pH and what portion of the nephron has the lowest pH? Also how would you treat tumor lysis
low, distal tubules and collecting ducts, tx with alkalinization and hydration
in metabolic acidosis, urine excretion of which two compounds inc to get rid of excess acid without making the pH too low
NH4+ and H2PO4-(titratable acids)–> inc H+ excretion
since inulin clearance is typically equal to GFR, what is the equation for net excretion rate
(inulin clearance)(plasma concentration of substance)-(tubular reabsorption of substance)
In minimal change disease, loss of _____ charge leads to ______ filtration of these charged proteins. Systemic __ cell dysfunction leads to that leads to podocyte foot fusion
negative, increased, T
Most renal cell carcinomas orginiate from the epithelial cells of the ______ and has cuboidal or polygonal cells with clear abundant cytoplasm. What do you see in the cells?
proximal renal tubules, glycogen and lipid accumulation
Transitional cell carcinomas are responsible for 90% of tumors involving the renal ____
pelvis
Crohn’s disease is associated with a defect in NF-KB which regulates what?
cytokine production, dec so inc chance of bacterial overgrowth and exaggereated response=chronic GI inflammation
Intusseception most commonly occurs at the ______ junction
ileocecal
Opioid analgesics can cause contraction of _________ in the sphincter of Oddi leading to inc pressures in the common bile duct and gallbladder
smooth muscle cells
Most of the K+ filtered by the glomeruli is reabsorbed in the ______ and the _______. The ________ and ______ are the primary sites of K+ concentration in the urine.
proximal tubule and loop of henle, late distal and cortical collecting ducts