Renal Replacement Therapy Flashcards
Which organ activates Vitamin D
Kidneys
Which organ produces erythropoietin
Kidneys
Until which stage of CKD may patient be asymptomatic
CKD Stage 4 or 5
What is advanced CKD called
Uraemia
Earliest Symptom of Uraemia
Malaise and Fatigue
When is Renal Replacement Therapy indicated
eGFR <10ml/min
Dialysis definition
Dialysis is a process whereby the solute composition of a solution, A, is altered by exposing solution A to a second solution, B, through a semipermeable membrane
Pre-Requisites for Dialysis
- Semipermeable Membrane (Artificial Kidney in Haemodialysis or Peritoneal Membrane)
- Adequate Blood exposure to membrane
- Dialysis Access
- Anticoagulation in Haemodialysis
What blood exposure to membrane does does haemodialysis need
extracorporeal blood
What blood exposure to membrane does Peritoneal Membrane need in renal replacement therapy
Mesenteric Circulation
What Dialysis access does Peritoneal membrane need in renal replacement therapy
peritoneal
What is permanent Haemodialysis access
AV Fistula
AV Prosthetic Graft
What are temporary Haemodialysis access measures
Tunnelled Venous Catheter and Temp Venous Catheter
Patients restrictions for dialysis
Fluid Restriction dictated by Residual Urine Output
Diet Restrict: Potassium, Sodium, Phosphate
What is used as dialysis membrane in peritoneal dialysis
Peritoneal Mesothelium
What is the most common osmotic agent for ultrafiltration of fluid in peritoneal dialysis
glucose
Peritoneal Dialysis Complications
Encapsulating Peritoneal Sclerosis
Ultrafiltration Failure
Gram Pos: Skin
Gram Neg: Bowel
Exit Site infection
Indications for Dialysis in End Stage Renal Disease
- Advanced Uraemia
- Severe Acidosis
- Treatment Resistance Hyperkalaemia
what is advanced uraemia staged as
GFR 5-10ml
severe acidosis classified as
bicarbonate <10mmol
What are patients restricted to for fluids in Haemodialysis
500-800ml/24hours
Dialysis Related Drugs for Anaemia
Erythropoeitin Injections
IV Iron Supplements
Dialysis Related Drugs for Renal Bone Disease
Activated Vit D eg Calcitriol
Phosphate Binders with Meals
Complications of Haemodialysis
Arrythmias Intra Dialytic Hypotension Clotting Heparin Related Problems Exit Site infection Tunnel Infection Peritonitis Hernias
Renal Transplant where is transplanted kidney placed into
Iliac Fossa and Anastomosed to Iliac Vessels
In renal transplant where do native kidneys go
Remain in Situ
Indications for Native nephrectomy
Polycystic Kidney
Chronic Pyelonephritis
What immunosuppressive agents can be used in Renal Transplant
Corticosteroid
Calcineurin Inhibitors eg Tacrolimus, Cyclosporine
Side effects of corticosteroids in renal transplant
hypertension hyperglycaemia infection bone loss gi bleed
side effects of Tacrolimus in renal transplant
hyperglycaemia
AKI
tremor
side effects of cyclosporin in renal transplant
Hirsutism
Hypertension
AKI
Gout
Immunesuppression Protocols for Renal Transplant
Induction: Basiliximab
Maintain: Tacrolimus + Mycophenolate and Steroids
Is the heart beating after cardiac death
No
is the heart beating after brain death
Yes
Brain death criteria
Coma Unresponsive to Stimuli Apnoea off Ventilation Absence Cephalic Reflexes eg Gag, Pupillary Body Temp above 34 Absence of Drug Intoxication
Expanded criteria for organ donation
Donar >60 Donor 50-59 Hypertension History Death from CVS Accident Terminal Creatinine of >133
What is associated with GFR of <60
Older Age and High BMI
What mediates rejection after renal transplant
Cell Mediated
Humoral AB Mediated
What malignancy can happen after renal transplant
Lymphoma
Acute Rejection of Renal Transplant is mediated by
T cell
Banff I Acute Rejection of Renal Transplant is categorised as
Tubulointerstitial or ATN Like
Banff II Acute Rejection of Renal Transplant is categorised as
Arteritis/Endotheliatitis or Capillaries/Glomerular inflammation
Banff III Acute Rejection of Renal Transplant is categorised as
Arterial Fibrinoid Necrosis or Arterial Inflammation
Antibody Mediated Rejection of Renal Transplant shows what features
Microvascular Inflammation with Neutrophils, Glomeruli, Peritabular Capillaries
Donor Specific Antibodies
Positive C4d in Peritubular Capillaries
What condition can happen after renal transplant
Diabetes Mellitus
What is the most important transplant related infection
Cytomegalovirus
Risk factors for BKAN after Renal Transplant
Immunosuppression
Treatment for BKAN after Renal Transplant
Antivirals eg Cidofovir or Leflunomide
Most common malignancy after renal transplant
Non Melanoma Skin
Kaosi Sarcoma
Non Hodgkin Lymphoma