RENAL Flashcards
Give 3 causes of renal colic.
- Urinary tract stones.
- UTI.
- Pyelonephritis.
Give 3 symptoms of renal colic
- ‘Loin to groin’ pain
- nausea/vomiting
- Often writhing in pain
Give 3 common sites where stones get stuck in urinary tract
- Pelviureteric junction
- Pelvic brim
- Vesicoureteric junction
What is the most common composition of renal caliculi?
Calcium oxalate 75%
What investigations might you do to find out what is causing someone’s renal colic?
- Bloods - inc. calcium, phosphate and urate.
- Urinalysis.
- MCS MSU.
- NCCT-KUB - gold standard!
Describe the epidemiology of stones in the urinary tract.
- 10-15% lifetime risk.
- Males > females - 2:1 ratio.
- Common among 30-50 y/o.
Give 3 potential causes of stones in the upper urinary tract.
- Dehydration!!
- infection
- Hypercalciuria
Describe the pathophysiology of stone formation in the upper urinary tract.
Form from crystals in supersaturated urine
Give 5 ways in which urinary tract stones can be prevented.
- Stay well hydrated.
- Low salt diet.
- Healthy protein intake.
- Reduced BMI.
- Active lifestyle.
- Deacidifcation of urine can prevent uric acid stones.
Describe the treatment for renal colic.
- Analgesia e.g. NSAIDs (diclofenac).
- Anti-emetics.
- Check for sepsis.
How would you treat renal stones <5mm diameter?
Stones <5mm diameter: 90%+ pass spontaneously
How would you treat stones >5mm diameter?
Stones >5mm diameter:
- Medical therapy (nifedipine or tamulosin)
- ESWL - Extracorporeal Shock Wave Lithotripsy
- PCNL - Per Cutaneous Nephro Lithotomy
What kind of drug is Tamulosin?
Alpha-1-blocker
- relaxes smooth muscle in the bladder neck and prostate and so increases urinary flow. This improves obstructive symptoms.
What is the affect of AKI on creatinine and urine output?
- Creatinine is raised.
- Urine output is reduced.
Give 5 risk factors for AKI.
- Increasing age.
- CKD.
- HF.
- Diabetes mellitus.
- Nephrotoxic drugs e.g. NSAIDs and ACEi.
Give a pre-renal cause of AKI.
- Hypertension.
- Heart failure.
- Nephrotoxic drugs.
Give 5 renal causes of AKI.
- Nephrotoxic drugs.
- Vasculitis.
- Autoimmune.
- Acute tubular necrosis.
- Glomerulonephritis.
What is the major complication someone with AKI might develop?
HYPERKALAEMIA!
- can lead to arrhythmias