Genitourinary Conditions A Flashcards
Nephrolithiasis - Description
formation of kidney stones (renal calculi) in urinary tract
Nephrolithiasis - Risk Factors (General) (5)
1) male
2) 20-40 years old
3) obesity
4) dehydration
5) precipitant drugs (e.g. diuretics, antacids, Na+/Ca2+ containing drugs, vitamin C/D)
Nephrolithiasis - Types (5)
1) calcium oxalate (64%)
2) calcium phosphate (16%)
3) uric acid (10-20%)
4) cysteine (1%)
5) struvite (1-5%)
Nephrolithiasis - Risk Factors (Calcium) (4)
1) hyperparathyroidism
2) hypercalcaemia
3) high dietary calcium
4) high dietary oxalate (e.g. chocolate, spinach)
Nephrolithiasis - Risk Factors (Uric Acid) (2)
1) hyperuricaemia (±gout)
2) ileostomy
Nephrolithiasis - Risk Factors (Cysteine) (1)
1) genetic (cystinuria)
Nephrolithiasis - Risk Factors (Struvite) (1)
1) urea splitting bacteria (e.g. Klebsiella, Proteus, Pseudomonas)
Nephrolithiasis - Symptoms (6)
1) sudden onset severe writhing colicky loin to groin pain (can’t lie still)
2) testicular/labial pain
3) nausea
4) vomiting
5) stranguria (burning dysuria in frequent small volumes despite urgency) (i.e. inc. dysuria, oliguria, urgency)
6) haematuria
Nephrolithiasis - Complications (3)
1) recurrent renal calculi
2) recurrent urinary tract infection
3) pyelonephritis
Nephrolithiasis - Investigations (3/2)
initial
1) kidney, ureter, bladder x-ray (KUBXR) (80%)
2) urine dipstick (haematuria)
3) U+E (cause)
consider
1) non-contrast CT kidney, ureter, bladder* (NCC-KUB) (99%) (18 months radiation dose)
2) abdominal ultrasound (rare acutely)
Nephrolithiasis - Management (4/7/3)
conservative
1) leave to pass naturally (<5mm)
2) hydration
3) weight loss
4) low dietary sodium, calcium
medical
1) analgesia (NSAIDs, aspirin —> diclofenac)
2) antiemetic
3) antibiotics (if infected)
4) αB (e.g. tamulosin) (>5mm)
5) thiazide diuretic (calcium recurrence)
6) sodium bicarbonate (uric acid recurrence)
7) cysteine chelator (cysteine recurrence)
surgery
1) extracorpeal shockwave lithotripsy (>10mm or refractory)
2) uretoscopy + YAG laser lithotripsy (>10mm or refractory)
3) percutaneous nephrolithotomy (>15mm or complex)
Acute Kidney Injury - Description
acute increased serum urea and creatinine and decreased urine output due to acute kidney function decline
Acute Kidney Injury - Risk Factors (10)
1) >75 years old
2) male
3) shock (cardiogenic, hypovolaemic, septic)
4) malignancy
5) diabetes mellitus
6) cardiovascular disease
7) chronic liver disease
8) chronic kidney disease (esp. >stage 3a)
9) past acute kidney failure
10) nephrotoxic drugs (e.g. NSAID, ACEi, gentamicin)
Acute Kidney Injury - Causes (Pre-Renal) (5)
1) decreased cardiac output (cardiogenic shock)
2) decreased blood volume (haemorrhage, burns, diarrhoea, vomiting, diuretics)
3) systemic vasodilation (septic shock)
4) renal vasoconstriction (NSAID, ACEi, ARB, hepatorenal syndrome)
5) ischaemia (renal artery stenosis)
Acute Kidney Injury - Causes (Intra-Renal) (4)
1) acute glomerulonephritis (nephrotoxic drugs, infection, SLE)
2) acute interstitial nephritis (nephrotoxic drugs, infection)
3) acute tubular necrosis (nephrotoxic drugs, myeloma)
4) vascular (vasculitis, thrombus)
Acute Kidney Injury - Causes (Post-Renal) (2)
1) internal obstruction (renal calculi, urinary tract tumour, stricture)
2) external compression (benign prostatic hyperplasia, pelvic tumour)
Acute Kidney Injury - Symptoms (6)
1) oliguria —> anuria
2) nausea
3) vomiting
4) dizziness
5) orthopnoea
6) paroxysmal nocturnal dyspnoea
Acute Kidney Injury - Signs (6)
1) hypertension
2) hypotension
3) postural hypotension
4) tachycardia
5) peripheral oedema
6) high JVP
Acute Kidney Injury - Complications (6)
1) hyperphosphataemia
2) hyperkalaemia —> arrhythmia
3) uraemia
4) metabolic acidosis
5) chronic kidney disease
6) pulmonary oedema
Acute Kidney Injury - Investigations (6/0)
initial
1) U+E (high urea, high creatinine, high K+, metabolic acidosis)
2) LFT (hepatorenal syndrome)
3) blood/urine MS+C (infection)
4) urine dipstick (haematuria+proteinuria—>glomerular, leucocytes+nitrates—>infection)
5) kidney ultrasound (CKD—>small kidneys, obstruction)
6) ECG (hyperkalaemia)
Acute Kidney Injury - Management (0/7/2)
medical
1) treat underlying cause
2) stop nephrotoxic drugs (NSAID, ACEi, gentamicin)
3) loop diuretic (hypervolaemia)
4) IV fluids (hypovolaemia)
5) vassopressor (e.g. catecholamines) (hypotensive)
6) calcium gluconate or insulin (hyperkalaemia)
7) sodium bicarbonate (metabolic acidosis)
surgery
1) urinary catheter (obstruction)
2) renal replacement therapy (esp. haemofiltration) (refractory)
Chronic Kidney Disease - Description
GFR<60ml/min/1.73m2 for >3 months due to chronic progressive kidney function decline
Chronic Kidney Disease - Causes (6)
1) diabetes mellitus
2) hypertension
3) acute kidney injury
4) polycystic kidney disease
5) glomerular nephritic/nephrotic syndrome
6) autoimmune (e.g. SLE, RA)
Chronic Kidney Disease - Risk Factors (7)
1) >50 years old
2) male
3) family history
4) Afro-Caribbean or Hispanic
5) obesity
6) smoking
7) nephrotoxic drugs (e.g. NSAIDs, ACEi, gentamicin)
Chronic Kidney Disease - Stages (6)
1) GFR≥90
2) 60≤GFR<90
3a) 45≤GFR<60
3b) 30≤GFR<45
4) 15≤GFR<30
5) GFR<15 (end-stage kidney failure)
Chronic Kidney Disease - Pathophysiology (Diabetes Mellitus) (8)
1) high blood glucose
2) increased reactive oxygen species, proinflammatory cytokines, growth factors
3) glomerulosclerosis of nephrons
4) irreversible nephron failure
5) glomerular hyperfiltration in remnant nephrons
6) initial GFR increase in remnant nephrons
7) eventual glomerulosclerosis of remnant nephrons
8) irreversible nephron failure
Chronic Kidney Disease - Pathophysiology (Hypertension) (12)
1) increased blood pressure
2) blood vessel lumen narrowing due to wall thickening
3) decreased kidney blood flow
4) decreased GFR
5) increased renin secretion
6) further increased blood pressure
7) glomerulosclerosis of nephrons
8) irreversible nephron failure
9) glomerular hyperfiltration in remnant nephrons
10) initial GFR increase in remnant nephrons
11) eventual glomerulosclerosis in remnant nephrons
12) irreversible nephron failure
Chronic Kidney Disease - Symptoms (4)
1) asymptomatic
2) polyuria/oliguria/anuria
3) fatigue (anaemia)
4) dyspnoea (pulmonary oedema)
Chronic Kidney Disease - Symptoms (Uraemia) (8)
1) malaise
2) nausea
3) vomiting
4) anorexia
5) weight loss
6) pruritus (itchy skin)
7) amenorrhoea
8) erectile dysfunction
Chronic Kidney Disease - Signs (4)
1) periorbital oedema
2) peripheral oedema
3) ecchymosis/purpura/petechia (uraemia)
4) Kussmaul’s breathing (deep laboured breathing) (metabolic acidosis)
Chronic Kidney Disease - Complications (7)
1) compensatory hypertension
2) anaemia
3) uraemia —> encephalopathy/pericarditis/coagulopathies
4) hyperkalaemia —> arrhythmia
5) hypocalcaemia/hyperphosphataemia —> secondary parahyperthyroidism —> renal oestodystrophy —> osteomalacia/osteoporosis
6) metabolic acidosis
7) pulmonary oedema
Chronic Kidney Disease - Investigations (8/1)
initial 1) FBC (normocytic anaemia) 2) U+E (high urea, high creatinine, high K+, metabolic acidosis) 3) serum Ca2+ (low) 4) serum PO43- (high) 5) serum PTH (high) 6) eGFR (<60ml/min/1.73m2) 7) urine dipstick (haemtauria, proteinuria) 8) kidney ultrasound (small) consider 1) kidney biopsy (underlying cause)
Chronic Kidney Disease - Management (4/2/1)
conservative 1) glucose control 2) weight loss 3) smoking cessation 4) renal replacement therapy education medical 1) treat underlying cause 2) stop nephrotoxic drugs (e.g. NSAIDs, gentamicin) surgery 1) renal replacement therapy (peritoneal dialysis, haemodialysis, haemodiafiltration, haemofiltration, kidney transplant)
Chronic Kidney Disease - Management (Complications) (10)
hypertension 1) ACEi or ARB (or CCB) 2) βB or thiazide diuretic (adjunct) cardiovascular disease 3) aspirin 4) statin anaemia 5) EPO stimulating agent 6) ferrous sulphate secondary hyperparathyroidism 7) phosphate binder 8) ergocalciferol metabolic acidosis 9) sodium bicarbonate oedema 10) loop diuretic (e.g. furosemide)
Kidney Cancer - Description (Renal Cell Carcinoma)
malignant proliferation of PCT epithelium
Kidney Cancer - Risk Factors (Renal Cell Carcinoma) (10)
1) >50 years old
2) male
3) family history (4x)
4) Czech
5) Von Hippel Landau syndrome (50%)
6) smoking (20%)
7) obesity
8) hypertension
9) chronic kidney disease (15%)
10) polycystic kidney disease
Kidney Cancer - Types (4)
1) renal cell carcinoma (85%)
2) transitional cell carcinoma (10%)
3) sarcoma
4) Wilms’ tumour
Kidney Cancer - Symptoms (Renal Cell Carcinoma) (7)
1) asymptomatic (50% incidental diagnosis)
2) flank/loin pain
3) haematuria
systemic
4) fever
5) malaise
6) anorexia
7) weight loss
Kidney Cancer - Signs (Renal Cell Carcinoma) (1)
1) abdominal mass
Kidney Cancer - Complications (Renal Cell Carcinoma) (6)
1) anaemia
2) polycythaemia
3) hypertension
4) hypercalcaemia
5) SIADH
6) varicocele
Kidney Cancer - Investigations (Renal Cell Carcinoma) (6/1)
initial 1) FBC (anaemia or polycythaemia) 2) LFT (abnormal) 3) high CRP + ESR 4) urine dipstick (haematuria, proteinuria) 5) kidney ultrasound (exclude simple cysts) 6) abdomen, pelvis enhanced contrast CT* consider 1) kidney biopsy (confirmation)
Kidney Cancer - Management (Renal Cell Carcinoma) (0/4/2)
medical
1) local ablation (radiofrequency or cryo-) (non-surgical candidate)
2) chemotherapy (IL-2, TNF-α) (stage 3-4)
3) angiogenesis inhibitor (e.g. sunitinib) (refractory stage 3-4)
4) mTOR inhibitor (e.g. temsirolmus) (refractory stage 3-4)
surgery
1) radical nephrectomy* (unilateral)
2) partial nephrectomy (bilateral)
Bladder Cancer - Description (Transitional Cell Carcinoma)
malignant proliferation of transitional epithelium
Bladder Cancer - Risk Factors (6)
1) >40 years old
2) male
3) family history
4) schistomiasis (squamous cell carcinoma)
5) smoking
6) occupation (petroleum, rubber)
Bladder Cancer - Types (4)
1) transitional cell carcinoma (90%)
2) squamous cell carcinoma (5%)
3) adenocarcinoma
4) sarcoma
Bladder Cancer - Metastasis (Transitional Cell Carcinoma) (3)
1) local —> pelvic structures
2) lymphatic —> iliac node, para-aortic node
3) haematogenous —> liver, lungs