RENAL - Infections, Stones and Malignancy Flashcards
PS Acute pyelonephritis (6)
High fever Loin pain w/ tenderness Bacteruria Rigors Vomiting Oliguria
Complications of pyelonephritis (3)
Sepsis
Abscess
Papillary necrosis
What does chronic pyelonephritis lead to
Scarring + progressive renal impairment –> ESRD
Appearance of kidney chronic pyelonephritis
Shrunken
Scarred
Capsule thickened and internal plumbing distorted and distended
What does chronic pyelonephritis occur in the presence of
Vesicoureteric reflux
Cystitis S+s (7)
Freq + nocturia Dysuria Urgency Haematuria Smelly urine Suprapubic pain/tenderness Strangury
What is Strangury
Painful frequent urination of small volume, expelled only by straining despite a severe sense of urgency
What specific Sx do older pt w/ cystitis present with?
Confusion
+/- incontinence
What specific Sx do children w/ cystitis present with (3)
FTT
Fever
Poor feeding
Predisposing factors cystitis (6)
Female Pregnancy Menopause Obstructive/tract malformation Catheter Diabetes
Most common causative agent cystitis
E.Coli (75%)
Ix cystitis (5)
Urine dipstick Midstream urine MCS USS CT/IV urography MSU
Causes of sterile pyuria (5)
Recently Tx UTI Appendicitis TB Chlamydia Bladder Cancer
Tx cystitis
Nitrofurantoin 100mg BD 3 days
+ lifestyle advice
Tx pyelonephritis
IV Tazocin 4.5g tds for at least 7 days
Recurrent UTI’s advice + Tx (5)
High fl intake Freq voiding (esp after sex) Avoid spermicidal jellies Avoid constipation Prophylactic Abx at night
3 Tx outcomes of UTI
Eradication
Elapse - rec infection within 7 days
Reinfection - bacteria absent 14 days then reoccur
What does acute ureteric obstruction lead to
Enlargement of UT superior to obstruction
Sx of upper ureteric obstruction (3)
Loin pain
Palpable kidney (hydronephrosis)
Infection due to stasis
Sx lower ureteric obstruction (5)
Suprapubic pain Palpable bladder Frequency Slow to start Slow to finish
Luminal causes ureteric obstruction (5)
Calculus SLoughed renal papilla Blood clot TCC renal pelvic/ureter Bladder. tumour
Mural causes ureteric obstruction (3)
Ureteric stricture
Congenital pelviureteric NM dysfunction
Congenital megaureter
Extramural causes ureteric obstruction (4)
Compression due to External tumours Diverticulitis AAA Retroperitoneal fibrosis
Ix ureteric obstruction (5)
Urine MCS USS confirm dilatation Abdo XR Non-contrast CT Retrograde pyelogram
Medical Mx ureteric obstruction
A-E 75mg diclofenac IM IM metocloperamide if severe N/V Iv ABx if severe infections Assess whether admission is req
When to admit - ureteric obstruction (4)
Still severe pain after 1hr
Risk of AKI
Signs shock/infection
Uncertainty over diagnosis
Indications for active Tx ureteric obstruction (5)
Low chance spontaneous passage Persistent pain Ongoing obstruction Signs infection Renal insufficiency
Surgical Mx options ureteric obstruction (4)
ESWL Uterscopy Percutaneous nephrolithotomy Nephrostomy Stenting
Which drugs incr rate of expulsion in ureteric obstruction
Tamulosin
Nifedipine
What % of stones pass naturally
80%
Follow up ureteric obstruction
send 1st stone for analysis
Rx urology within 1 week
Where are the 3 classic sites of renal stones
Pelvicoureteric jct = renal pelvis
Pelvic brim
Vesicoureteric jct
What is the most common composition of renal stones
Calcium oxaolate (75%)
Peak age of kidney stones
20-40 y/o
M:F kidney stones
3:1
What are the 3 types of kidney stones
Staghorns
Renal pelvis stone
Ureteric stone
PS kidney stones
Renal colic - loin to groin spasms
Pt can’t lie still
N/V
UTI
When does renal colic occur w/ kidney stones
If stone impacted in ureter
When does a dull loin pain occur w/ kidney stones
If stone in major/minor calyx
RF KIDNEY STONES (4)
Obesity
Dehydration
FHx/PHx
Anatomical abnormalities
When are stones are emergency
If there is both obstruction and infection
Ix kidney stones
Bloods - Ca,PO4, gluc, HCO3, urate Urine dip -95% blood bHCG MCS + pH AXR Non contract CT
What % of kidney stones are visible on AXR
80%
What % of kidney stones are visible on non-contrast CT
99%
Mx kidney stones (4)
Analgesia
PCNL/lithotripsy
Diet advise - high fl, low salt, low animal protein, drink citrus. fruit juice
Exercise + W loss
Causes of bladder calculi (3)
Bladder flow obstruction
Presence of FB
Upper UT stone passing down
Sx bladder calculi
Sx UTI; signif bacturia, poor flow, terminal dribble
+ Haematuria + pain gen at end of micturition as bladder contracts
Male - pain at tip penis
Perineal pain
When is there perineal pain w/ a bladder calculi
If = trigonitis
Ix bladder calculi
As per upper UT stone
Mx bladder calculi
Medical expulsive therapy
ESWL (lithotripsy if large)
Immediate analgesia
Complications bladder calculi
Predispose to SCC
What is a renal cell carcinoma
Vascular tumour from PCT
What % of renal tumours are renal cell carcinomas
90%
Main RF RCC
Prolonged haemodyalysis
PS RCC
50% incidential
10% - Haematuria, loin pain, abdo pass, B Sx
Signs polycythaemia or HTN (if EPO secretion)
Ix RCC (5)
Urine cytology USS CT/MRI CXR REnal angiography
Why do CXR for renal cell carcinoma
Assess for cannon ball mets in the lungs
Mx renal cell carcinoma (2)
Radical / partial nephrectomy
Post op chemo
What is a Wilms tumour
Undifferentiated mesodermal mass
What age to Wilms tumours PS
3.5y
Sx Wilms tumour (2)
Flank pain
Abdo mass
What must you NOT do w/ a WIlms tumour
Biopsy
Mx Wilms tumour
Nephrectomy
Post-op chemo
What % of 50 y/o have renal cyst
50%
Sx renal cysts (3)
Asymp
Or cause haematuria + pain
What are the 3 most common causes of renal cysts
PKD
Medullary cystic disease
Medullary spongy disease