Nephrology Flashcards
What is the presentation of lower UTI?
*Dysuria
*Suprapubic pain
*Frequency
*Urgency
*Incontinence
*Confusion
What is the presentation of pyelonephritis?
*Fever
*Loin, suprapubic or back pain
*Vomiting
*ANorexia
*Haematuria
*Renal angle tenderness
What investigations should be carried out in suspected UTI?
*Urine dipstick
*Mid stream urine sample for culture
What will urinalysis show in UTI
*Positive for nitrates if gram negative bacteria
*Leukocytes
Name 3 causes of UTI
*E.Coli ( gram neg anaerobic rod)
*Kelbsiella pneumoniae (gram neg. anaerobic rod)
*enterococcus
Name a fungal cause of UTI
Candida albicans
What is the management for UTI
*3 days for simple lower UTI in women
*5-10 for women who are immunocompromised, have abnormal anatomy or impaired kidney function
*7 days for men, pregnant women or catheter associated UTI
*Trimethoprim or nitrofuratoin
When should you avoid using trimethoprim?
In the 1st trimester
What is the treatment of pyelonephritis?
Cefalexin, trimethoprim or co-amoxiclav for 7-10 days
Diagnosis of AKI
*urine output of <0.5ml/kg/hour for >6 hours
*Creatinine rise of ≥26mmol/l within 48 hours
*Creatinine rise to ≥1.5 times the baseline within the past 7 days
What investigations should be carried out in suspected AKI?
*Metabolic profile
*UEs
*LFTs
*FBC
*CRP
*Urine dip
*Urine output monitoring
What are the pre renal causes of AKI?
*Dehydration
*Hypotension
*Heart failure
Lead to inadequate perfusion of the kidney
What are the renal causes of AKI?
-Glomerulonephritis
- Interstitial disease
-Acute tubular necrosis
What are the post renal causes of AKI?
-Kidney stones
-Masses
-Ureter or ureteral strictures
-Enlarged prostate or prostate cancer
What is the management of AKI?
*IV fluid if pre renal cause
*Stop nephrotoxic medications
*Relieve obstruction if post renal - insert a catheter
*Treat the underlying cause
What are the complications of AKI?
*Hyperkalaemia
*Fluid overload, heart failure, pulmonary oedema
*Metabolic acidosis
*Uraemia -> encephalopathy or pericarditis
What are the nephrotoxic drugs?
*ACEi
*ARBs
*NSAIDs
*aminoglycosides
*Cyclosporin
*Tacrolimus
*amphotericin B
*Cisplatin
*Acyclovir
*Ampicillin
What are the causes of chronic kidney disease?
*Diabetes
*Hypertension
*Age related decline
*Glomerulonephritis
*Polycystic kidney disease
*NSAIDs, PPIs, Lithium
What are the risks for chronic kidney disease?
*Age
*Hypertension
*Diabetes
*Smoking
What is the presentation of chronic kidney disease?
*Often asymptomatic until the late stages
*Fatigue
*Oedema
*Nausea and/or vomiting
*Pruritis due to build up of waste
*Restless legs (uraemia)
*Anorexia
What investigations should be carried out in suspected chronic kidney disease?
*UEs + eGFR
*Serum glucose
*Urinalysis
*Urinary albumin: AER (albumin excretion rate) or ACR (albumin to creatinine ratio)
*Renal ultrasound
What is needed to confirm the diagnosis of chronic kidney disease?
eGFR 2 tests 3 months apart
Explain albumin categories of chronic kidney disease
A1: AER<30 or ACR <3
A2: AER 30-300 or ACR 3-30
A3: AER >300 or ACR >30
Explain the GFR category of chronic kidney disease
G1: GFR>90 + pathological diagnosis or haem/proteinuria or radiological abnormality
G2: GFR 60-89
G3: GFR 45-59
G3b: 30-44
G4: 15-29
G5 <15
What are the complications of CKD?
- anaemia
- renal bone disease
- cardiovascular disease
- peripheral neuropathy
- dialysis related problems
What is the managment of CKD?
*ACEi, dapagliflozin, statin
*If hypertension is not controlled consider addign another agent
*monitor K+
*Iron supplements and erythropoietin
*vitamin D, low phosphate diet and bisphosphonates if osteoporosis
What are the indications of RRT?
*Medically resistant hyperkalaemia
*medically resistant fluid overload
*Medically resistant acidosis
*Uraemic pericarditis
*Uraemic encephalopathy
*Dialysable toxins (aspirin, lithium, toxic alcohol)
How often does haemodialysis take place
4 hours 3 times a week
What are the complications of haemodialysis?
*Acute hypotension
*Access problems
*Cramps due to sodium flux
*Fatigue
*Hypokalaemia
*Blood loss
*Air embolism
*Dialysis disequilibrium
What are the complications of peritoneal dialysis?
*Infection- peritonitis
*Glucose load - development or worsening of diabetes
*Hypoalbuminaemia
*Peritoneal membrane failure
*Mechanical: hernia, diaphragmatic leak, dislodged catheter
*Encapsulating peritoneal sclerosis
What are the pros of renal transplant?
*No dialysis
*Improved fertility
*Better renal funciton
*More independent
*Better life expectency
*Cost
What are the cons of renal transplant?
*Immunosuppression
*higher cardiovascular risk
*Higher infection risk
*Post transplant diabetes
*Skin malignancy
Nephrotic syndrome
- 3.5g proteinuria for 24 hours (urine PCR>300)
- serum albumin<30
- oedema
- ± hyperlipidaemia
Nephritic syndrome
- Hypertension
- Blood and protein in the urine
- Declining kidney function
What is the most common cause of nephrotic syndrome in children?
Minimal change disease
What is the most common cause of nephrotic syndrome in adults?
Focal segmental glomerulosclerosis
Presentation of minimal change disease
- nephrotic
- acute presentation
- idiopathic or secondary to malignancy