LUTS Flashcards

1
Q

how many voids per night constitutes nocturia?

A

There is no set number

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2
Q

Nocturnal polyuria

What percentage of the total urine volume needs to be produced at night to dx nocturnal polyuria?

A

> 33%

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3
Q

What is the cause of nocturnal polyuria?

A

decreased arginine vasopressin over time

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4
Q

how much urine output is needed to dx polyuria?

A

> 3L per day

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5
Q

how does OSA cause nocturia?

Does aldosterone increase or decrease

A

decreased O2 perfusion leads to right sided heart dysfunction

this increased atrial natriuretic peptide which leads to decreased aldosterone

this increased urine production via water and salt excretion from vessels

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6
Q

DDAVP monitoring regimen

DDAVP dose

A

hyperosmolar urine induces hyponatremia

check BMP after 1 week, then 1 month, then 3-6 months afterwards

dose: 25mcg and 55mcg

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7
Q

Contraindications to DDAVP

A

sodium < 135mE/L
glucocorticoid use
loop diuretics
kidney disease
acute fluid wasting illness like GI bug

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8
Q

AUA definition of chronic urinary retetion

A

PVR >200cc for at least 6 months on two difference occasions.

if >300cc at least 2x, need renal sono and creatinine

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9
Q

DDX for urinary retention

A

spinal cord disease
cauda equina syndrome
MS (25% of patient needed CIC)

tumor/mass effect
fowlers

DM
age
POP
post-surgical
medication
DSD

Obstructive vs neurogenic causes

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10
Q

What is Fowlers syndrome?

A

painless retention due to decreased bladder sensation and failure of urethral relaxation

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11
Q

urethral diverticulum DDX

A

skenes
malignancy
ectopic ureterocele
leiyomyoma
Gartners duct cyst

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12
Q

risk factors for urethral diverticulum

A

AA race (OR 3.0)
UTIs
pelvic trauma/instrumentation

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13
Q

Process for urethral diverticulum development

A

repeat infections in urethra and paraurethral glands causing abscess/dilation and attaches to urethra

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14
Q

steps for urethral diverticulum removal

A

-urethroscopy
-foley
-u shaped or straight incision
shell diverticulum with sharp dissection and cut at the base when urethra is entered
-secure mucosal edges with 4-0

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15
Q

urethral diverticulum

risk factors for failure of repair

A

smoker
immunosuppressed
infection
large or complex fistula

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16
Q

urethral diverticulum

complications and rates

A

fistula 2-8%
Incontinence (de novo): 15%
stricture

17
Q

how often does microhematuria workup come back negative?

18
Q

Hematuria DDX

A

-bladder cancer
-Renal disease-stones, failure
-trauma/instrumentation
-hx of pelvic surgery/mesh
-endometriosis
-Menses
-strenuous exercise
-schistosomaisis from somalia, middle east, east asia
-AVM
-chemo/rad cystitis

19
Q

Patient <50
<25 rbc/hpf
nonsmoking

what is her chance of malignancy?

20
Q

What imaging should you select for hematuria work up?
Pt is over 50

A

CT urogram is the first choice
Non-contrast CT is okay for stones
US if CT is contraindicated
IVP if stone/mass is suspected

21
Q

What is the success rate of a primary VVF repair?

What is the success rate of a secondary repair?

A

90%

80-90%

22
Q

When should you repair a VVF?

A

<72 hours from inciting event
OR
after 12 weeks to allow for inflammation to subside

23
Q

What is her risk of urinary tract malignancy?

<50 years old
never smoker
no gross hematuria
UA showed <25 RBC/hpf

24
Q

What is the AUGS and ACOG recommendation for microhematuria work up for low risk women age 35-50?

A

> 25 RBC/Hpf

25
Q

What is the rate of urologic malignancy in women with any degree of hematuria?

26
Q

what percentage of malignancy is thought to be iatrogenic due to CT radiation exposure?

27
Q

how do you counsel your patients regarding hematuria work up?

A

-History-smoking, chemical exposure, gross hematuria, menstruation, rectal bleeding, prior pelvic surgery
-physical-signs of blood source, UA, GSM
-shared decision making - she low risk
-discuss that rate of urologic cancer in women with any amount of hematuria is <1%
-explain what the work up would entail

28
Q

Per AUA guidelines, at what age should all AMH work ups include CT urogram?

A

60 and older

29
Q

Per AUA guidelines, below what age can you just repeat UA in 6 months?

30
Q

which patients would you treat asymptomatic bacteruria?

A

pregnancy
GU tract abnormality
planned surgery
transplant patient