lemessa jira renal falure slide share
TRANSCRIPT
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May 1, 2023 pp.by selam M 1
Acute Renal failureBy:- Lemessa Jira
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Presentation Outline Definition
Epidemiology
A etiology
Pathogenesis
Clinical feature
Differential Diagnosis
Diagnostic modality
Medical / surgical management
Evidence based nursing interventionMay 1, 2023 pp.by selam M 2
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May 1, 2023 pp.by selam M 3
objectiveAt the end of this session,we will be Define and Identify the cause of AKI and CKD Explain the clinical feature of AKI and CKD Identify the diagnostic modality of renal failure Describe the treatment option for renal failure
and ESRD Apply evidence based nursing intervention
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May 1, 2023 pp.by selam M 4
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May 1, 2023 pp.by selam M 5
Anatomy & Physiology overview The renal and urinary systems include kidneys, ureter, bladder and urethra
The kidneys are paired, bean-shaped structures located retroperitoneal (behind and outside the peritoneal cavity)
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May 1, 2023 pp.by selam M 6
Anatomy & Physiology …. Adult human kidney, weighs 113 to 170 g, are approximately 12 cm long, 6 cm wide, and 2.5 cm thick
( Porth & Matfin, 2009).
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May 1, 2023 pp.by selam M 7
Kidneys and their structuresRenal capsule Outer membrane which incloses and protects the kidney against infections and trauma
Renal cortex The outer layer of the kidney that contains most of the nephron
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May 1, 2023 pp.by selam M 8
Kidneys and their structures…Nephrons Most basic microscopic structure of the kidney
Inside each kidney there are about 1million nephrons
Physiological unit of the kidney used for filtration of the blood,reabsorption and secretion of materials
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May 1, 2023 pp.by selam M 9
Renal medulla
Inner layer contains renal pyramids, renal papillae, renal pelvis and part of nephron
Site for salt, water and urea absorption
(Internal medicine lecture Note)
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May 1, 2023 pp.by selam M 10
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May 1, 2023 pp.by selam M 11
Function of Kidneys Urine formation Regulation of electrolyte (acid–base balance calcium and phosphorus balance)
Red blood cell production Vitamins synthesis /vit-D/
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May 1, 2023 pp.by selam M 12
Con… Excretion of waste products Control of water balance and blood pressure
Secretion of prostaglandins
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May 1, 2023 pp.by selam M 13
Common symptoms patient with renal disorder Pain Change in voiding (urinary frequency, urgency,dysuria,hesitancy,nocturia,urinary retention oliguria, anuria, hematuria
Gastrointestinal symptoms Shortness of breath, Vital sign change
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Acute Renal failure
May 1, 2023 pp.by selam M 14
It is a Rapid deterioration of renal function resulting in retention of nitrogenous wastes and inability of the kidney to regulate fluid and electrolyte homeostasis. (Nelson 20 ed)
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May 1, 2023 pp.by selam M 15
Epidemiology of AKI in worldWorld incidence of AKI and its stages were 21.6% in adults and 33.7% in children
AKI-associated mortality rates were 23.9% in adults and 13.8% in children
A systematic review (2004–2012)
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May 1, 2023 pp.by selam M 16
ETHIOLOGY OF AKI
1.Pre renal 2. Intrinsic Renal
3. Post-renal
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May 1, 2023 pp.by selam M 17
Pre-renalMost common cause of ARFResults from decreased renal perfusion to the kidney
Treatment of the cause restores renal and tubular function
(Paweena S.et.al,2013).
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May 1, 2023 pp.by selam M 18
Causes of pre renal AKI
vomiting, diarrhea, poor fluid intake, fever, use of diureticshemorrhage cardiac failureseptic shock
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May 1, 2023 pp.by selam M 19
Intrinsic/renal• Direct damage to the kidneys by inflammations ,toxins, drugs, infection
Interstitial nephritis, acute glomerulo nephritis, tubular necrosis, ischemia, toxins
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May 1, 2023 pp.by selam M 20
Post-renal Sudden obstruction of urine flow due to enlarged prostate, kidney stones, bladder tumors or injury
Bilateral renal calculi, papillary necrosis, coagulated blood, bladder carcinoma
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May 1, 2023 pp.by selam M 21
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May 1, 2023 pp.by selam M 22
PathogenesisPrerenal AKI, also called prerenal azotemia, is characterized by
• diminished effective circulating arterial volume, which leads to inadequate renal perfusion and a decreased GFR.
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May 1, 2023 pp.by selam M 23
Con…• If the underlying cause of the renal
hypo perfusion is reversed promptly, renal function returns to normal.
• If hypo-perfusion is sustained, intrinsic renal parenchymal damage can develop
. ( Alobaidi et al. 2015 January ).
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May 1, 2023 24
Intrinsic renal AKI It is characterized by:-renal parenchymal damage,
including sustained hypo perfusion and ischemia Severe and prolonged ischemic/hypoxic injury and nephrotoxic insult lead to acute tubular
necrosis
pp.by selam
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May 1, 2023 25
Con… An underlying feature is a rapid
decline in GFR usually associated with decreases in renal blood flow.
The primary causes of AKI include ischemia, hypoxia or nephrotoxicity (basile et.al,2014.)
pp.by selam M
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May 1, 2023 pp.by selam M 26
con… Acute interstitial nephritis is
another common cause of AKI and is usually a result of a hypersensitivity reaction to a therapeutic agent or various infectious agents
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May 1, 2023 pp.by selam M 27
Postrenal AKIBlockage in the urinary tract
may cause urine to build up in one or both kidneys. Over time, this fluid buildup can prevent the normal flow of urine out of the kidney.
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May 1, 2023 pp.by selam M 28
Con…In adults sudden obstruction of urine flow occurs due to enlarged prostate, kidney stones, bladder tumors or injury account for the majority of cases of AKI
(OD, et al 2013)
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May 1, 2023 pp.by selam M 29
Prerenal There may be history of volume loss
from vomiting, diarrhea, or blood loss and may present with dehydration , hypotension , tachycardia , pallor , and decreased urine output,
Sudden onset and reversible
Clinical presentation
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May 1, 2023 pp.by selam M 30
Renal Hematuria, edema, and
hypertension indicates a glomerular etiology for AKI.
Presence of rash History of prolonged exposure
to nephrotoxic medication
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May 1, 2023 pp.by selam M 31
Post renal • History of interrupted urinary
stream and palpable bladder or kidney suggest obstructive uropathy.
• Abdominal colic pain, hematuria and dysuria suggest urinary tract calculi.
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May 1, 2023 pp.by selam M 32
Diagnosis History and Physical examination
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May 1, 2023 pp.by selam M 33
Con…Cardiovascular examination Murmurs Pericardial friction rub Increased jugulovenous distention Pulmonary examination Crepitation sound
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May 1, 2023 pp.by selam M 34
Con…Abdomen Abdominal or costovertebral
angle tenderness - Nephrolithiasis, renal artery or renal vein thrombosis
distended bladder – Urinary obstruction
( P, et al 2009)
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May 1, 2023 pp.by selam M 35
BUN, Serum cr level and electrolyte Urinary indices may be useful in differentiating prerenal AKI from intra renal AKI. Ultrasound - evaluates renal size, able to detect masses, obstruction, stonesRenal biopsy - Patient in whom the etiology is not identified
Laboratory investigation
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pp.by selam M 36
DDX for AKIChronic Kidney DiseaseAcute Tubular NecrosisAzotemiaHyperkalemiaHypertensive EmergenciesLupus nephritis (Harison 19th ed)
May 1, 2023
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May 1, 2023 pp.by selam M 37
Complication of AKIMetabolic
• Hyponatremia • Hyperkalemia• Hypocalcemia,
hyperphosphatemia • Hyperuricamia • Metabolic acidosis
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May 1, 2023 pp.by selam M 38
Con…Cardiovascular
CHFHypertension Arrhythmias PericarditisPulmonary edema
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May 1, 2023 pp.by selam M 39
Con…
Neurologic Coma and Seizures Hematologic
Anemia and Coagulopathies & bleeding diathesis
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May 1, 2023 pp.by selam M 40
Management of acute renal failureTreat the cause If hypotension, correct hypotension with fluid, and monitor urine output hourly
Initiation of renal replacement therapy when indicated
TREATMENT
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pp.by selam M 41
Con…Elimination of nephrotoxic agents eg, NSADS
If the cause is post renal obstruction, e.g. ureteric stone, BOO, remove by means of Open Surgery
(Surgery lecture note) May 1, 2023
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May 1, 2023 pp.by selam M 42
Indications for dialysis
Anuria/UO <100ml/24/ Oliguria (uo<400ml/24hr) Volume overload with evidence of
hypertension and/or pulmonary edema Severe metabolic acidosis unresponsive
to medical management
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May 1, 2023 pp.by selam M 43
Con… Uremia Blood urea nitrogen >100-150
mg/dL Calcium: phosphorus imbalance,
with hypocalcemic tetany that cannot be controlled by other measures
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May 1, 2023 pp.by selam M 44
• Nutrition is of critical importance a patient who develop AKI. In most cases, sodium, potassium, and phosphorus should be restricted.
• Protein intake should be moderately restricted while maximizing caloric intake to minimize the accumulation of nitrogenous wastes
Nutrition
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May 1, 2023 pp.by selam M 45
con…
• The recommended energy provide target of 20–30 kcal/kg/day and a protein target of 1.5 g/kg/day, in the absence of RRT.
• In case of RRT, an increase in protein supply maximum 1.7 g/kg/day suggested
[KDIGO 2O12 guideline]
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May 1, 2023 pp.by selam M 46
Prevention of AKIAdequate hydrationMaintenance of adequate mean arterial pressure
Minimizing nephrotoxin exposure
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May 1, 2023 pp.by selam M 47
con… 2 GFR <60 mL/min/1.73 m2 for ≥3
months, with or without the other signs of kidney damage described above
(Arveiler D, et al. 2012)
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May 1, 2023 pp.by selam M 48
Reference Kasper L., Braunwald E., Harrison’s principles of Internal
medicine, 16th Edition, Gout, Myers R. Allen, National Medical Series for independent
Study (NMS) 3rd edition Medicine, Fiaccadori E, Parenti E, Maggiore U. Nutritional support in
acute kidney injury. J Nephrol. 2008;21:645–56 KIDIGO 2012,Guideline oca et.al. chronic kidney disease after acute kidney injury.
epidemiological research center,2012. Tamiru .et al. Survival patterns of patients on maintenance
hemodialysis for end stage renal disease in Ethiopia: BMC Nephrology 2013,14 :127