Title: Disorders of the Kidneys and Ureters
1Disorders of the Kidneys and Ureters
2Overview pg 1124
- The most common urologic disorders are infectious
and inflammatory conditions. - Those that affect the kidneys are extremely
dangerous because damage to the nephrons can
result in permanent renal dysfunction.
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4Pyelonephritis pg 1124
- An acute or chronic bacterial infection of the
kidney and the lining of the collecting system
(kidney pelvis). - Acute phelonephritis presents with moderate to
severe symptoms that usually last 1 to 2 weeks. - If the treatment of acute pyelonephritis is not
successful and the infection recurs, it is termed
chronic pyelonephritis.
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6Patho
- Bacteria ascend to the kidney and kidney pelvis
by way of the bladder and urethra. - Normal fecal flora such as E. coli, is the most
common bacteria that cause acute pyelonephritis. - E. Coli accounts for about 85 of infections.
7Patho
- In acute pyelonephritis, the inflammation causes
the kidneys to grossly enlarge. - Chronic pyelonephritis occurs after recurrent
episodes of acute pyelonephritis. - The kidneys develop irreversible degenerative
changes and become small and atrophic.
8Patho
- If extensive numbers of nephrons are destroyed,
renal failure develops. - Renal dysfunction may not occur for 20 or more
years after the onset of the disease. - About 10 to 15 of clients with chronic
pyelonephritis require dialysis.
9Pyelonephritis S/S pg 1124
- Flank pain or tenderness
- Chills, fever, and malaise
- Frequency and burning on urination if there is an
accompanying cystitis (bladder inf) - Some with chronic are asymptomatic
- Others have a low-grade fever and vague GI
complaints. - Polyuria and nocturia develop when the tubules of
the nephrons fail to reabsorb water efficiently.
10Medical Management
- Tx includes relieving the fever and pain and
prescribing antimicrobial drugs such as Septra or
Cipro for 14 days. - Antispasmodics and anticholinergics such as
Ditropan Pro-Banthine relax smooth muscles of
the ureters and bladder, promote comfort, and
increase bladder capacity. - 4 weeks of drug therapy is prescribed
11Nursing Management pg 1125
- Obtain a complete medical, drug, allergy
history. - V/S (? temp or BP)
- Any s/s of fluid retention such as peripheral
edema and SOB. - Collect a clean-catch urine specimen for
urinalysis and urine culture. - Measure I O
12Nursing Management
- Provide a liberal fluid intake of approx. 2,000
to 3,000 mL to flush the infectious
microorganisms from the urinary tract. - LAB TEST BUN, creatinine, serum electrolytes,
and urine culture
13Family Teaching pg 1126 Box 64-1
- Suggest consuming acid-forming foods such as
meat, fish, poultry, eggs, grains, corn, lentils,
cranberries, prune, plums, and their juices to
prevent calcium and magnesium phosphate stone
formation. - Recommend avoiding alcohol and caffeine products
if bladder spasms are present or until a clinical
response to therapy is verified.
14Acute Glomerulonephritis pg 1126
- The term nephritis describes a group of
inflammatory but NONINFECTIOUS disease
characterized by wide-spread kidney damage. - Glomerulonephritis is a type of nephritis that
occurs most frequently in children and young
adults however, it can affect individuals at any
age.
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16Patho
- Symptoms of acute glomerulonephritis appear about
1 to 2 weeks after a group A beta-hemolytic
streptococci upper respiratory infection. - The relationship between the infection acute
glomerulonephritis is not clear microorganisms
are not present in the kidney when symptoms
appear, but the glomeruli are acutely inflamed.
17Acute Glomerulonephritis S/S
- About 50 are symptom free.
- Occasionally the onset is sudden with pronounced
symptoms such as fever, nausea, malaise,
headache, generalized edema, or periorbital
edema, puffiness around the eyes. - In some instances, the disorder is discovered
during a routine physical examination.
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19Acute Glomerulonephritis S/S
- More often, the client or family notices that the
persons face is pale and puffy and that slight
ankle edema occurs in the evening. - Many other vague symptoms.read on your own
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21Diagnostic Findings
- Gross or microscopic hematuria gives the urine a
dark, smoky, or frankly bloody appearance.
22Medical Management pg 1127
- No specific treatment exists for acute
glomerulonephritis and treatment is guided by the
symptoms and their underlying abnormality. - Treatment may consist of bed rest, a
sodium-restricted diet (if edema or HTN is
present), and antimicrobial drugs to prevent a
superimposed infection in the already inflamed
kidney.
23Medical Management
- The client is not considered cured until the
urine is free of protein and red blood cells for
6 months. - Return to full activity usually is not permitted
until the urine is free of protein for 1 month.
24Nursing Management
- Maintain bed rest when the blood pressure is
elevated and edema is present - Collect daily urine specimens to assist with
evaluating the clients response to TX. - Assess the BP q 4 hours or prn
- Encourage adequate fluid intake and measure I
O. - Encourage carbohydrate intake to prevent the
catabolism of body protein stores (may be
restricted in sodium and protein)
25Chronic Glomerulonephritis pg 1127
- A slowly progressive disease characterized by
inflammation of the glomeruli that causes
irreversible damage to the kidney nephrons. - Some live for years with only occasional
symptomatic episodes or none at all, or the
disease may be rapidly fatal unless renal failure
is treated with dialysis.
26Patho
- The chronic inflammation leads to ever-increasing
bands of scar tissue that replace nephrons, the
vital functioning units of the kidney. - Decreased glomerular filtration can eventually
lead to renal failure. - Chronic glomerulonephritis accounts for approx.
40 of people on dialysis.
27Chronic S/S
- Some experience no symptoms of this disorder
until renal damage is severe. - Generalized edema known as ANASARCA is a common
finding. - Anasarca is due to the shift of fluid from the
intravascular space to interstitial and
intracellular fluid locations. - The fluid shift is due to depletion of serum
proteins, albumin in particular, which is lost in
the urine.
28S/S
- Clients remain markedly edematous for months or
years. - The client may feel relatively well, but the
kidney continues to excrete albumin. - The fluid burden and subsequent renal failure
contribute to fatigue, headache, hypertension,
dyspnea, and visual disturbances.
29Diagnostic Findings
- Azotemia, accumulation of nitrogen waste products
in the blood, is evidenced by elevated BUN, serum
creatinine, and uric acid levels. - The urine contains protein (albumin), sediment,
cast (deposits of minerals that break loose from
the walls of the tubules), and red and white
blood cells.
30Medical Management
- Treatment is nonspecific and symptomatic
- Management goals include (1) controlling HTN with
medications and sodium restriction (2) correcting
fluid and electrolyte imbalance, (3) reducing
edema with diuretic therapy (4) preventing
congestive heart failure (5) eliminating urinary
tract infections with antimicrobials. - May necessitate dialysis or kidney transplantation
31Nursing ManagementFluid Volume Excess
- Weigh daily at the same time on the same scale
while wearing similar clothing. - Measure I O
- Monitor BP, HR, lung and heart sounds each shift
- Assess for pitting edema, tight rings or shoes,
clothes that do not fit comfortably - Educate on low sodium restriction
- Administer prescribed diuretics
32Nursing ManagementFatigue Activity Intolerance
- Avoid clustering nursing tasks and physical
activities - Provide periods of rest and promote uninterrupted
sleep at night - Eliminate any activities of daily living that are
not necessary. - Assist the client with activities when evidence
of tachycardia or dyspnea is present.
33Polycystic Disease pg 1129
- A congenital kidney disorder that has a familial
tendency. - 2 forms the infantile and adult forms
- 1. The infantile form is rare. It may cause
fetal death (before delivery), early neonatal
death, or renal failure during childhood. - 2. The adult form has its onset between 30 to 50
years of age and insidiously progresses to renal
insufficiency.
34Polycystic Disease
- Once renal failure develops, polycystic disease
is usually fatal within 4 years, unless the
client receives dialysis treatment or organ
transplant.
35Patho
- Adult polycystic kidney disease is the result of
autosomal dominant inheritance. - This means that the gene for the disease is
passed from an affected parent to his or her
children. - Each child has a 5050 chance of acquiring the
defective gene
36Patho
- As the name implies, this disorder is
characterized by the formation of multiple
bilateral kidney cysts. Fig 64-4 pg 1130. - The cysts interfere with kidney function and
eventually lead to renal failure. - The fluid-filled cysts cause enormous enlargement
of the kidneys from normal fist size to as much
as the size of a football.
37Patho
- As the cysts enlarge, they compress the renal
blood vessels and cause chronic hypertension. - Bleeding into cysts causes flank pain
38Polycystic Disease S/S
- Hypertension is present in approx 75 of affected
individuals at the time of diagnosis. - Other symptoms, such as pain from retroperitoneal
bleeding, lumbar discomfort, and abdominal
tenderness, are due to the size and effects of
the cysts. - Colic (acute spasmodic pain) is experienced when
there is ureteral passage of clots or calculi.
39Medical Management
- Has no cure, but some interventions reduce the
rate of progression. - HTN --- antihypertensive drugs, diuretic med and
sodium restriction - UTIpromptly with antibiotics
- Low RBC countiron supplements, injections of
erythropoietin (Epogen) or blood transfusions
40Medical Management
- NEPHROTOXIC MEDICATIONS, SUCH AS NONSTEROIDAL
ANTI-INFLAMMATORY DRUGS AND CEPHALOSPORIN
ANTIBIOTICS, ARE AVOIDED AT ALL COSTS. - Dialysis substitutes for kidney function when
renal failure occurs and while the client awaits
an organ transplant
41Nursing Management
- Assess V/S especially BP
- Observe the urine for signs of bleeding or
infection - Measure I O
- Report any decrease in or absence of urine
output.
42Obstructive Disorders pg 1130
- KIDNEY AND URETRERAL STONES
- A stone (calculus) is a precipitate of mineral
salts that ordinarily remain dissolved in urine. - About 80 of renal calculi in the US are composed
of calcium oxalate. - Stones may be smooth, jagged, or staghorn shaped
fig 64-5 pg 1131
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44Kidney Ureteral Stones Pg. 1130
- Calculi can occur anywhere in the urinary tract
from the kidney pelvis and beyond. - When a stone forms, the condition is called
urolithiasis. - Nephrolithiasis refers to the presence of a
kidney stone, the size of which may range form
microscopic to several centimeters in diameter. - Ureterolithiaisis is a stone within the ureter.
Ureteral stones are usually small some may be no
larger than a grain of sand.
45Patho
- Predisposing factors
- Calciuria, excessive calcium in the urine
(hyperparathyroid dx, calcium-based antacids, and
excessive intake of vitamin D) - Dehydration
- Osteoporosis in which bone is demineralized
- Obstructive disorders (enlarged prostate)
- Immobility
- UTI
46Patho
- Calculi traumatize the walls of the urinary tract
and irritate the cellular lining, causing pain as
violent contractions of the ureter develop to
pass the stone along. - But the ureteral spasms may just as easily hold a
stone in place. - If a stone totally or partially obstructs the
passage of urine beyond its location, pressure
increases in the area above the stone.
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48S/S
- Small stones may pass unnoticed
- However, sudden, sharp, severe flank pain that
travels to the suprapubic region and external
genitalia is the classic symptom of urinary
calculi. - The pain comes in waves that radiate to the
inguinal ring, the inner aspect of the thigh, and
to the testicle or tip of the penis in men , or
the urinary meatus or labia in women.
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50Medical Management 1132
- Small calculi are passed naturally with no
specific interventions. - If the stone is 5 mm or less in diameter, moving,
the pain is tolerable, and no obstruction is
present, the client is managed medically with
vigorous hydration, analgesics, antimicrobial
therapy, and drugs that dissolve calculi or
eventually alter conditions that promote their
formation (Table 64-1 pg 1132)
51Medical Management
- For larger stones, extracorporeal shock wave
lithotripsy (ESWL), a procedure that uses 800 to
2,400 shock waves aimed from outside the body
toward dense stones may be used (fig 64-6) pg
1133 - The stones are shattered into smaller particles
that are passed from the urinary tract
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53Medical Management
- ESWL is administered with the client in a water
bath or surrounded by a soft cushion while under
light anesthesia or sedation. - Stones can also be pulverized with laser
lithotripsy.--- to do so, a fine wire, through
which the laser beam passes, is inserted into the
ureter by means of a cystoscope. Repeated bursts
of the laser reduces the stone to a fine powder,
which is then passed in the urine.
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55Medical Management
- Other stone removal procedures are performed with
ureteroscopic approaches in which the endoscope
is inserted from the urethra into the upper
urinary tract under anesthesia to grasp, crush,
and remove stones from the kidney pelvis or
ureter. - Afterward, a catheter or ureteral stent, a
slender supportive device, is left in place for 3
days to splint the ureter or divert the urine
past any possible tear in the ureteral wall (fig
64-7) pg 1134
56Medical Management
- If the stone cannot be removed, a ureteral
catheter is left in place for 24 hours to dilate
the ureter in the hope that the stone will pass
through it or that it will be pulled into the
bladder when the catheter is removed.
57Surgical Management
- A nephrostomy tube, is a catheter that is
inserted through the skin into the renal pelvis
to manage any obstruction to urine flow above the
bladder. - The tube is kept in place with a suture through
he skin. - Unlike the bladder, the kidney pelvis can only
hold APPROX. 5 TO 8 ML of urine. -
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59Surgical Management
- If urinary drainage through the tube is impaired
for even a short time from a blood clot or
kinking or compression of the tubing,
hydronephrosis and damage to surgically repaired
tissue can result. - The client will complain of pain if the renal
pelvis becomes distended with urine.
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62REVIEW ON YOUR OWN
- Nursing Guidelines 64-1 pg 1135 Managing a
Nephrostomy Tube
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64Ureteral Stricture pg 1136
- A stricture is a narrowing of a lumen in this
case the ureter is narrowed - The recurrent inflammation and infection cause
scar tissue to accumulate within the ureter. - Other conditions that can interfere with urine
passing through the ureter are congenital
anomalies or conditions that mechanically
compress the ureter such as pregnancy and tumors
within the abdomen or upper urinary tract.
65S/S
- Flank pain or discomfort and tenderness at the
costovertebral angle (CVA) due to enlargement of
the renal pelvis often develop. - CVA where the last rib joins the vertebra
66Medical Management pg 1137
- The ureter can be stretched by inserting a
dilator called a filiform or urethral sound, a
curved metal rod, followed by others that are
sequentially larger. - If the obstruction persists, the MD performs a
ureteroplasty, removal of the narrowed section of
ureter and reconnection of the patent portions. - A ureteral stent is placed in the ureter to
provide support to the walls of the ureter,
relive the obstruction, and maintain the flow of
urine through the ureter and into the bladder.
67Nursing Management
- If a ureteral catheter is inserted
preoperatively, measure the urine output from the
catheter hourly. - Immediately report if there is no urine output
from the ureteral catheter. - On return from surgery, all urinary drainage
tubes and catheters are connected to a closed
drainage system or to the type of drainage
ordered by the physician.
68Nursing Management
- The main complication associated with ureteral
surgery is failure of the ureter to transport
urine from the kidney to the bladder. - Contact the MD if signs of shock appear, urinary
output from the ureteral catheter is decreased or
absent, or if the client complains of significant
abdominal pain, which may indicate leakage of
urine into the peritoneal cavity.
69Nursing Management
- Notify the MD if signs of a urinary tract
infection develop, such as fever and chills or if
the urine is cloudy or has a foul odor.
70Tumors of the Kidney pg 1137
- A hypernephroma (renal adenocarcinoma) is the
most common malignant tumor of the kidney in
adults. - Squamous cells tumors are second.
- May be associated with carcinogenic effects of
long-term cigarette smoking, environmental toxin
(asbestos) or volatile solvents (gasoline) - Because the kidneys are deeply protected in the
body, tumors can become quite large before
causing symptoms.
71S/S
- The classic triad of renal cancer is PAINLESS
hematuria, flank pain, and the presence of a
palpable mass. - Additional symptoms include weight loss, malaise,
and unexplained fever. - Later, there is colic-like discomfort during the
passage of blood clots
72Medical Management
- Nephrectomy, including removal of the surrounding
perinephric fat, is the treatment for a malignant
renal tumor. - Surgery, chemotherapy, and radiation done
- If extensive metastases are found, only
palliative treatment is given.
73Nursing Management pg 1138
- Review care plan and family teaching on your own
!!!!
74Renal Failure pg 1139
- The inability of the nephrons within the kidneys
to maintain fluid, electrolyte, and acid-base
balance, excrete nitrogen waste products, and
perform regulatory functions such as maintaining
calcification of bones and producing
erythropoietin.
75Renal Failure
- There are two types of renal failure
- 1. Acute renal failure (ARF) is characterized by
sudden and rapid decrease in renal function. ARF
is potentially reversible with early, aggressive
treatment of its contributing etiology. - 2. Chronic renal failure (CRF) is characterized
by progressive and irreversible damage to the
nephrons. It may take months to years for CRF to
develop.
76Acute Renal Failure
- Acute renal failure progresses through 4 phases
- 1. Initiation phase
- 2. Oliguric phase
- 3. Diuretic phase
- 4. Recovery phase
77Acute Renal Failure
- 1. Initiation Phase begins with the onset of
the contributing event. - It is accompanied by a reduction in blood flow to
the nephrons to the point at which there is acute
tubular necrosis (ATN) - ATN refers to the death of cells within the
collecting tubules of the nephrons where
reabsorption of water, electrolytes, and
excretion of protein wastes and excess metabolic
substances occurs.
78Acute Renal Failure
- 2. Oliguric Phase associated with the
excretion of less that adequate urinary volumes. - This phase begins within 48 hours after the
initial cellular insult and may last for 10 to 14
days or longer. - Fluid volume excess develops, which leads to
edema, HTNlt and cardiopulmonary complications.
79Acute Renal Failure
- Azotemia, marked accumulation of urea and other
nitrogenous wastes such as creatinine and uric
acid in the blood, creates a potential for
neurologic changes such as seizures, coma, and
death. - Some clients excrete urinary volumes greater than
500 mL/day. However, the urine has a very low
specific gravity because it lacks normal amounts
of excreted substances such as excess potassium
and hydrogen ions, to maintain homeostasis.
80Acute Renal Failure
- Consequently, hyperkalemia, metabolic acidosis,
and uremia, a toxic state caused by the
accumulation of nitrogen wastes, develop
regardless of the excreted water volume.
81Acute Renal Failure
- Diuretic Phase diuresis begins as the nephrons
recover. - Despite an increase in the water content of
urine, the excretion of wastes and electrolytes
continues to be impaired. - The BUN, creatinine, potassium, and phosphate
levels remain elevated in the blood.
82Acute Renal Failure
- Recovery Phase it may take one or more years of
recovery while normal glomerular filtration and
tubular function are restored. - Some clients recover completely others develop
varying degrees of permanent renal dysfunction.
83Chronic Renal Failure
- In CRF, the kidneys are so extensively damaged
that they do not adequately remove protein
by-products and electrolytes from the blood and
do not maintain acid-base balance. - End-stage renal disease (ESRD) is the term given
for the point at which a regular course of
dialysis or kidney transplantation is necessary
to maintain life.
84Chronic Renal Failure
- Actual electrolyte imbalances include
hyperkalemia, hyperphosphatemia, hypermagnesemia,
and hypocalcemia. - The skin becomes the excretory organ for the
substances the kidney usually clears from the
body. - A precipitate, referred to as uremic frost, may
form on the skin.
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87Chronic Renal Failure
- Assessment S/SIn both ARF CRF, the client
has an elevated blood pressure and weight gain. - Urine output is generally decreased.
- Facial features appear puffy due to fluid
retention - The skin is pale ulceration and bleeding of the
GI tract may occur.
88Chronic Renal Failure
- The oral mucous membranes bleed, and blood may be
found in the feces. - Vague symptoms of lethargy, HA, anorexia, and dry
mouth. - The clients breath and body may have an odor
characteristic of urine. - Table 64-4 lists the systemic manifestations of
CRF. Pg 1141
89Medical Management pg 1141
- Dialysis
- Fluid and dietary restrictions that include
- Low protein
- High calories
- Low sodium
- Low potassium
90Medical Management
- Kayexalatean ion-exchange resin, is prescribed
for oral or rectal administration to remove
excess potassium when hyperkalemia occurs. - An IV infusion of glucose and insulin also
facilitates movement of potassium within the
cell. - Instead of blood transfusions to correct chronic
anemia, Epogen is administered to stimulate bone
marrow production of RBCs
91Surgical Management Pg 1142
- Some are candidates for a kidney transplant
- One healthy kidney can perform the work of two
- Any potential donor with a history of HTN,
malignant disease, or DM is excluded form
donation. - When a transplant is performed, the donor kidney
is inserted through an abdominal incision and the
nonfunctioning kidneys are left in place unless
the client is extremely hypertensive.
92Surgical Management
- The blood vessels from the donor kidney are
sutured to the iliac artery and vein and the
ureter is implanted in the bladder. (fig 64-11 pg
1142)
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94Dialysis Pg. 1143
- A procedure for cleaning and filtering the blood.
- It provides a substitute for kidney function when
the kidneys are unable to remove the nitrogenous
waste products and maintain adequate fluid,
electrolyte, and acid-base balance.
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96Dialysis
- During dialysis the clients blood is filtered by
diffusion and osmosis. - Substances such as urea, creatinine,and
dangerously high levels of potassium, and water
move FROM the blood through the semipermeable
membrane TO the dialysate, the solution used
during dialysis that has a composition similar to
normal human plasma.
97Dialysis
- Dialysis is performed by hemodialysis and
peritoneal dialysis. - Either technique can be performed at home or in a
dialysis center. - Each type of dialysis has advantages and
disadvantages. Table 64-5 pg. 1148
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99Arteriovenous Fistula
- A surgical anastomosis (connection) of an artery
and vein lying in close proximity. Fig 64-13 pg
1149 - The vessels usually joined are the cephalic vein
and the radial artery or the cephalic vein and
brachial artery. - They require from 1 to 4 months to mature before
being used.
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101Arteriovenous Fistula
- At the time of dialysis, two venipunctures are
performed at either end of the fistula - The distal venipuncture is used to remove blood
that is transported to the machine. - The proximal needle puncture is used to return
the dialyzed blood. - When dialysis is completed, the needles are
removed and pressure dressings are applied for
several hours.
102Arteriovenous Fistula
- Blood samples are taken before and after
dialysis. - The clients predialysis and postdialysis weights
are compared. Sometimes as much as 10 lb of
fluid is removed. - BUN, creatinine, sodium, potassium, chlorides,
and HCT are used as indicators of efficiency of
dialysis.l
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104Arteriovenous Graft
- A type of vascular access method that uses a tube
of synthetic material to connect a vein and
artery in the upper or lower arm Fig 64-13 pg
1149. - The graft pulsates with blood flow
- AV grafts can be used 14 days after their
insertion. - Although the graft reseals after each needle
puncture, the expected life of the graft is 3 to
5 years with repeated use.
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106Nursing Management
- Assess record vital signs before and after
hemodialysis. - Weigh the client and obtain blood for labs
- To prepare for vascular access
- Palpate for a THRILL (vibration) over the
vascular access. Listen for a BRUIT, a loud
sound caused by turbulent blood flow. IF ABSENT,
POSTPONE FURTHER USE AND REPORT FINDINGS.
107Nursing Management
- After dialysis is completed, do not administer
injections for 2 to 4 hours. - This allows time for the metabolism and excretion
of heparin, which is administered during
dialysis, to reach safe levels. - Before discharging the client, observe for
disequilibrium syndrome.
108Nursing Management
- Disequilibrium Syndrome a neurologic condition
believed to be caused by cerebral edema. - The shift in cerebral fluid volume occurs when
the concentrations of solutes within the blood
are lowered rapidly during dialysis - Decreasing solute concentration lowers the plasma
osmolality. - WATER THEN FLOODS THE BRAIN TISSUE!!!
109Nursing Management
- This syndrome is characterized by HA,
disorientation, restlessness, blurred vision,
confusion, and seizures. - The symptoms are self-limiting and disappear
within several hours after dialysis as fluid and
solute concentrations equalize. - The syndrome can be prevented by slowing the
dialysis process to allow time for gradual
equilibration of water.
110Nursing Management
- Client Teaching Avoid carrying heavy items in
the arm with the fistula or graft - Do not sleep on the vascular access arm
- Do not permit venipunctures, injections, or blood
pressures in the arm with the vascular access. - Assess for a thrill or bruit daily!!