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Chronic Kidney Disease
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Chronic Kidney Disease
Progressive, irreversible damage to the nephrons and glomeruli
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Major causes are Diabetes and high blood pressure
Type 1 and type 2 diabetes mellitus High blood pressure (hypertension) Glomerulonephritis Polycystic kidney disease Use of analgesics - acetaminophen(Tylenol) and ibuprofen (Motrin, Advil Clogging and hardening of the arteries(atherosclerosis) Obstruction of the flow of urine by stones, an enlarged prostate, strictures (narrowings), or cancers. HIV infection, sickle cell disease, heroin abuse, amyloidosis, kidney stones, chronic kidney infections, and certain cancers.
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Kidney functions - monitored regularly
Diabetes mellitus type 1 or 2 High blood pressure High cholesterol Heart disease Liver disease Amyloidosis Sickle cell disease Systemic Lupus erythematosus Vascular diseases such as arteritis, vasculitis, or fibromuscular dysplasia Vesicoureteral reflux (a urinary tract problem in which urine travels the wrong way back toward the kidney) Require regular use of anti-inflammatory medications A family history of kidney disease
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Chronic Renal Failure End Stage Renal Disease (ESRD)
Protein and waste metabolism accumulates in the blood (azotemia) 90% of kidney function is lost (kidney cannot adequately function) Hypothesis: Nephrons remains intact, others progressively destroyed. Adaptive response maintains function until ¾ are destroyed Hypertrophy continues kidneys begin to lose their ability to concentrate the urine adequately The kidney has a remarkable renal reserve. Up to 80% of the GFR (reflected in creatinine clearance measurement may be lost with few overt changes in functioning of the body.
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Table 1. Stages of Chronic Kidney Disease
*GFR is glomerular filtration rate, a measure of the kidney's function. Stage Description GFR* mL/min/1.73m2 1 Slight kidney damage with normal or increased filtration More than 90 2 Mild decrease in kidney function 60-89 3 Moderate decrease in kidney function 30-59 4 Severe decrease in kidney function 15-29 5 Kidney failure Less than 15 (or dialysis)
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Chronic Kidney Disease - Pathophysiology
Modifiable Factors -Diabetic Mellitus -Hypertension -Increase Protein and Cholesterol Intake -Smoking -Use of analgesics Non-Modifiable Factors -Hereditary -Age greater than 60 years old -Gender -Race Decreased renal blood flow Primary kidney disease Damage from other diseases Urine outflow obstruction Chronic Kidney Disease - Pathophysiology BUN Serum Creatinine Decreased glomerular filtration Hypertrophy of remaining nephrons Dilute Polyuria Inability to concentrate urine Loss of Sodium in Urine Hyponatremia Dehydration Further loss of nephron function Loss of nonexcretory renal function 2 a Failure to convert inactive forms of calcium Failure to produce eryhtropoietin Impaired insulin action Production of lipids Immune disturbance s Disturbances in reproduction Erratic blood glucose levels Advanced atherosclerosis Calcium absorption Anemia Pallor Delayed wound healing Infection Libido Infertility 1
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Loss of excretory renal function
Hypocalcemia 1 Osteodystrophy Loss of excretory renal function Excretion of nitrogenous waste Decreased sodium reabsorption in tubule Decreased potassium excretion Decreased phosphate excretion Decreased hydrogen excretion Uremia Hyperkalemia Hyperphosphate mia Metabolic acidosis Water Retention BUN, Creatinine Uric Acid Decreased calcium absorption Hypertension Heart Failure Edema Proteniuria Hypocalcemia Peripheral nerve changes Hyperparathyroidis m Decreased potassium excretion Pericarditis Increased potassium CNS changes Pruritus Altered Taste Bleeding Tendencie s
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Weakness and tiredness/ fatigue.
Nocturia is often an early symptom Itchiness of the skin which can progressively worsen Pale skin which is easily bruised Muscular twitches, cramps and pain Pins and needles in the hands and feet Nausea
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As the condition worsens the symptoms progress to:
Oedema (swelling of the face, limbs and abdomen) Oliguria (greatly reduced volume of urine) Dyspnoea (breathlessness) Vomiting Confusion Seizures Severe lethargy Very itchy skin Breath that smells of ammonia
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Associated complications of chronic Kidney Disease would be:
Anaemia, mostly due to deficiency of erythropoietin Bleeding which is caused by impairment of platelet function Metabolic Bone Disease (known as Renal Osteodystrophy)
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Associated complications of chronic Kidney Disease would be:
Cardiovascular Disease - hypertension, (which may further exacerbate the renal failure) -accelerated atherosclerosis -pericarditis. 80% of those with chronic renal failure develop hypertension which must be treated
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Associated complications of chronic Kidney Disease would be:
Nervous system – neuropathy caused by the loss of myelin from nerve fibres – may improve when dialysis is established Gastrointestinal complications - anorexia, nausea and vomiting, and a higher incidence of peptic ulcer disease
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Associated complications of chronic Kidney Disease would be:
Skin disease – itching, which is attributed to the retention of metabolic waste products. It often improves with dialysis. Dry skin can also occur Muscle dysfunction - myopathy leading to muscle cramps and the “restless leg” syndrome
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Associated complications of chronic Kidney Disease would be:
Metabolic dysfunction - involving lipids, insulin and uric acid (gout). Metabolic acidosis is also associated
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Diagnosis Urine Tests Urinalysis Twenty-four hour urine tests
Estimated GFR (eGFR) Electrolyte levels and acid-base balance Blood cell counts Other tests Ultrasound: Biopsy Urine Tests Urinalysis Twenty-four hour urine tests Glomerular filtration rate (GFR) Blood Tests Creatinine and urea (BUN) in the blood
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Treatment Modalities Decrease fluid 1000ml/day
Decrease protein (.5-1kg body weight) Decrease sodium (1-4gm variable) Decrease potassium Decrease phosphorous (<1000mg/day) Dialysis (periotoneal, hemodialysis) RBC, Vitamin D (calcitrol replacement) etc.
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Dialysis Hemodialyis(Hemo)Peritoneal (PD)
General Principal: Movement of fluid and molecules across a semi permeable membrane from one compartment to another Hemodialysis – Move substances from blood through a semi permeable membrane and into a dialysis solution (dialysate –bath) (synethetic membrane) Peritoneal – Peritoneal membrane is the semi permeable membrane
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Osmosis-Diffusion-Ultrafiltration
Osmosis - movement fluid from an area of < to > concentration of solutes (particles) Diffusion - movement of solutes (particles) from an area of > concentration to area of < concentration [Remove urea, creatinine, uric acid and electrolytes, from the blood to the dialystate bath] RBC, WBC, Large plasma proteins do not go through Ultrafiltration – Water and fluid removed when the pressure gradient across the membrane is created, by increase pressure in the blood compartment & decrease pressure in the dialysate compartment
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Peritoneal Dialysis Catheter placement – anterior abdominal wall
Tenckoff (25cm length with cuff anchor and migration) Dialysis solution (1-2 liters sometimes smaller) Three phases of PD Inflow (fill) approximately 10 minutes, could be in cycles) Dwell (equilibration) (approximately min or 8 hours+) Drain (approximately 15 minutes) These 3 phases are called Exchanges
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Peritoneal Dialysis
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Hemodialysis Vascular access for high blood flow
Shunts, (teflon, external) Arteriovenous fistulas and grafts (AV) Anastomosis between an artery and vein Fistulas are native vessels (4-6 wks maturity) Grafts are artificial/synthetic material
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Hemodialysis AV Fistula Communication AV Graph Access
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Hemodialysis Hemodialysis Circuit Hemodialysis Machine
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PD Advantages and Disadvantages
Bacterial/chemical peritonitis Protein loss Exit site of catheter Self image Hyperglycemia Surgical placement of catheter Multiple abdominal surgery Immediate initiation Less complicated Portable (CAPD) Fewer dietary restrictions Short training time Less cardio stress Choice for diabetics
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Hemo Advantages & Disadvantages
Rapid fluid removal Rapid removal of urea & creatinine Effective K+ removal Less protein loss Lower triglycerides Home dialysis possible Temporary access at the bedside Vascular access problems Dietary & fluid restrictions Heparinization Extensive equipment Hypotension Added blood lost Trained specialist
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Disequalibrium Syndrome
Fluid removal and decrease in BUN during hemodilaysis which cause changes in blood osmolarity.These changes trigger a fluid shift from the vascular compartment into the cells. In the brain, this can cause cerebral edema, resulting in increase intracranial pressure and visible signs of decreasing level of consciousness. Symptoms: Sudden onset of headache, nausea and vomiting, nervousness, muscle twitching, palpitation, disorientation and seizures Treatment: Hypertonic saline, Normal saline
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The following are general dietary guidelines:
Protein restriction: Salt restriction Fluid intake: Potassium restriction: Phosphorus restriction: Control blood pressure and/or diabetes; Stop smoking; and Lose Excess Weight
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Avoided or used with caution:
Certain analgesics: Aspirin; ibuprofen Fleets or phosphosoda enemas because of their high content of phosphorus Laxatives and antacids containing magnesium and aluminum such as magnesium hydroxide Ulcer medication H2-receptor antagonists: cimetidine, ranitidine Decongestants such as pseudoephedrine especially if they have high blood pressure Herbal medications
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Nursing Care Pre, Post Dialysis
Weigh before & after Assess site before & after (bruit, thrill, infection, bleeding etc.) Medications (precautions before & after) Vital signs before and after etc.
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Renal Transplant Living and Cadaveric donors
Predialysis: obtain a dry weight free of excess fluids and toxins More preparation time from a living donor vs. cadaveric – transplant within 36 hours of procurement Delay may increase ATN Pre-transplant: Immunotherapy (IV methylprednisolone sodium succinate, (A –methaPred, Solu-Medrol), cyclosporine (Sandimmune and azathioprine ((Imuran)
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Complications Post Transplant
Rejection is a major problem Hyperacute rejection: occurs within minutes to hours after transplantation Renal vessels thrombosis occurs and the kidney dies There is no treatment and the transplanted kidney is removed
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Immunological Compatibility of Donor and Recipient
Done to minimize the destruction (rejection) of the transplanted kidney HUMAN LEUKOCYTE ANTIGEN (HLA) This gives you your genetic identity (twins share identical HLA) HLA compatibility minimizes the recognition of the transplanted kidney as foreign tissues.
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Immunological Analysis
WHITE CELL CROSS MATCH (the recipient serum is mixed with donor lymphocytes to test for performed cytotoxic (anti-HLA) antibodies to the potential donor kidney A positive cross match indicates that the recipient has cytotoxic antibodies to the donor and is an absolute contraindication to transplantation
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Immulogical Analysis MIXED LYMPHOCYTE CULTURE
The donor and recipient lymphocytes are mixed. Result = HIGH SENTIVITY, this is contraindicated for renal transplantation. ABO BLOOD GROUPING ABO blood group must be compatible
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Surgery LLQ of the abdomen outside of the peritoneal cavity
Renal artery and vein anastomosed to the corresponding iliac vessels Donor ureters are tunneled into the recipients’ bladder.
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Complications Post Transplant
Acute Rejection: occurs 4 days to 4 months after transplantation It is not uncommon to have at least one rejection episode Episodes are usually reversible with additional immunosuppressive therapy (Corticosteroids, muromonab-CD3, ALG, or ATG) Signs: increasing serum creatinine, elevated BUN, fever, wt. gain, decrease output, increasing BP, tenderness over the transplanted kidneys
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Complications Post Transplant
Chronic Rejection: occurs over months or years and is irreversible. The kidney is infiltrated with large numbers of T and B cells characteristic of an ongoing , low grade immunological mediated injury Gradual occlusion renal blood vessels Signs: proteinuria, HTN, increase serum creatinine levels Supportive treatment, difficult to manage Replace on transplant list
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Complications Post Transplant
Infection Hypertension Malignancies (lip, skin, lymphomas, cervical) Recurrence of renal disease Retroperiotneal bleed Arterial stenosis Urine leakage
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100 patients with eGFR < 60 (Tuesday morning in Outpatients)
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Tuesday morning 1 year later: 1 patient needs RRT, 10 patients have died (> 50% CV death)
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Tuesday morning 10 years later: 8 patients need RRT, 65 patients have died, 27 have ongoing CKD
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The majority of patients with CKD 1-3 do not progress to ESRF.
Their risk of cardiovascular death is higher than their risk of progression.
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Optimise risk factors Cardiovascular disease Proteinuria Hypertension
Diabetes Smoking Obesity Exercise tolerance TAKE HOME MESSAGE
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Nursing Care Plan of a Patient With ESRD
Nursing diagnosis: Excess fluid volume related to decreased urine output, dietary excesses, and retention of sodium and water. Goal: Maintenance of ideal body weight without excess fluid.
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Assess fluid status (Daily weight, intake and output balance, skin turgor and presence of edema, distention of neck veins, blood pressure, pulse rate, and rhythm, respiratory rate and effort). Limit fluid intake to prescribed volume. Identify potential sources of fluid (medications and fluids used to take medications; oral and intravenous, foods). Explain to patient and family rationale for restriction.
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Nursing Care Plan of a Patient With ESRD (Cont…)
Nursing diagnosis: Imbalanced nutrition; less than body requirements related to anorexia, nausea, vomiting, and dietary restrictions. Goal: Maintenance of adequate nutritional intake.
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Interventions: The nurse should:
Assess nutritional status (weight changes, serum electrolyte, BUN, creatinine, protein, transferrin, and iron levels). Assess patient’s nutritional dietary patterns (diet history, food preferences, calorie counts). Assess for factors contributing to altered nutritional intake (Anorexia, nausea, or vomiting, diet unpalatable to patient, depression, lack of understanding of dietary restrictions, stomatitis). Provide patient’s food preferences within dietary restrictions. Promote intake of high biologic value protein foods
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Nursing Care Plan of a Patient With ESRD (Cont…)
Nursing diagnosis: Deficient knowledge regarding condition and treatment. Goal: Increased knowledge about condition and related treatment.
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Interventions: The nurse should:
Assess understanding of cause of renal failure, its meaning and consequences, and its treatment. Provide explanation of renal function and consequences of renal failure at patient’s level of understanding and guided by patient’s readiness to learn. Provide oral and written information as appropriate about renal function and failure, fluid and dietary restrictions, medications, reportable problems, signs, and symptoms, follow-up schedule, community resources, and treatment options.
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Nursing Care Plan of a Patient With ESRD (Cont…)
Nursing diagnosis: Activity intolerance related to fatigue, anemia, retention of waste products, and dialysis procedure. Goal: Participation in activity within tolerance. Interventions: The nurse should: Assess factors contributing to fatigue (anemia, fluid and electrolyte imbalances, retention of waste products, depression) Promote independence in self-care activities as tolerated; assist if fatigued. Encourage alternating activity with rest. Encourage patient to rest after dialysis treatments. TAKE HOME MESSAGE
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THANK YOU Have a check on your blood pressure Sugar & Salt / year
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