Dental Management of Patients with Renal Failure
[Pages:7]Dental Management of Patients with Renal Failure By: Sina Moshiri
Classification of Renal Failure
? The kidney compensates for the loss of a nephron through hypertrophy of the remaining
nephrons. Thus, kidney function is maintained until roughly 50% of functional nephrons have been lost. Symptoms of renal impairment begin to emerge once this point is reached.
? Acute renal failure (ARF) is characterized by a sudden, significant reduction in glomerular
filtration rate (GFR). ARF may be a result of pre-renal, intrinsically renal or post-renal causes. Patients with ARF are typically not suitable for elective dental care.
? Chronic renal failure (CRF) is characterized by a progressive loss of functional nephrons and
reductioninGFR. Thenatural end-point of CRF isend-stagerenal failure(ESRF), whichcanonly be managed with dialysis and/or kidney transplantation.
Table 1
Pre-renal gastrointestinal losses excessive perspiration bleeding burns w/ fluid sequestration renal losses cardiovascular failure liver failure
Acute renal failure Intrinsic renal causes acute tubular necrosis (vasomotor nephropathy) severe cortical necrosis severe acute glomerulonephritis vasculitis malignant HTN accelerated scleroderma allergic interstitial nephritis
Post-renal ureteral obstruction bladder obstruction bladder rupture urethral obstruction
Chronic renal failure
chronic immune glomerulopathy HTN nephrosclerosis chronic tubulointerstitial diseases metabolic disease congenital/hereditary renal processes
Chronic Renal Failure
? CRF isdiagnosed on the findingsof GFR50%
>45-60 mL/min
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