Genitourinary Flashcards
What are the NICE criteria for an AKI?
rise in creatinine >25micromols/L in 48 hrs
rise in creatinine >50% in 7 days
urine output <0.5ml/kg/hr
What are the most common causes of AKI?
pre-renal causes
What are the pre-renal causes of AKI?
due to inadequate perfusion of the kidney
- hypotension
- heart failure
- dehydration
What are the renal causes of AKI?
glomerulonephritis
interstitial nephritis
acute tubular necrosis
rhabdomyolosis
tumour lysis syndrome
what are the post-renal causes of AKI?
obstruction of outflow:
- kidney stones
- abdo/pelvic masses (cancer)
- urethral/ureter strictures
- BPH, prostate cancer
What is the first line investigation for AKI?
urinalysis - protein, blood, leukocytes, nitrites, glucose
What would positive leukocytes and nitrites in urinalysis suggest?
infection
What would protein and blood in urine suggest?
acute nephritis (may also be positive in infection)
What would glycosuria be suggestive of?
diabetes
what is the first line management for AKI?
rehydration - IV
stop nephrotoxic drugs
relive obstruction e.g. insert catheter for post-renal causes
What are the nephrotoxic drugs?
Diuretics
ACEi/ARBs
metformin
NSAIDs
What could uraemia as a result of AKI lead to?
encephalopathy or pericarditis
What are the complications of AKI?
hyperkalaemia
fluid overload - heart failure/pulmonary oedema
metabolic acidosis
uraemia
What are some of the causes of CKD?
diabetes
hypertension
NSAIDs, PPIs, lithium
polycystic kidney disease
glomerulonephritis
What signs/symptoms could be present in CKD?
pruritus
nausea
peripheral neuropathy
oedema
loss of appetite
muscle cramps
pallor
What are the first line investigations for CKD?
eGFR - using U&Es
ACR
urine dipstick - haematuria
What investigation can be used in patients with accelerated CKD?
renal ultrasound (polycystic kidney disease)
How is CKD diagnosed with eGFR?
an eGFR <90 on two occasions three months apart
What two scores are used to determine the stage of kidney disease?
G score - eGFR
A score - ACR
What are some of the complications of CKD?
anaemia
renal bone disease
dialysis related problems
cardiovascular disease
peripheral neuropathy
What is the first line treatment for patients with CKD?
ACEi to treat hypertension
What should be monitored in patients with CKD on ACEi?
potassium
both CKD and ACEi cause hyperkalaemia
What are the aims of management of CKD?
slow progression of disease
Reduce cardiovascular risk
reduce risk of complications
treat complications
How would you treat metabolic acidosis?
oral sodium bicarbonate