A/8. Urological emergency Flashcards

1
Q

Total urinary retention def

A

acute onset suprapubic discomfort with the desire, but inability, to urinate

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2
Q

Total urinary retention etiology

A

More common in men due to
* BPH
* prostate cancer
* urethral stricture
* Other causes include:
*neurological disorders
*blood clot obstructing lower urinary
tract
*and infection

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3
Q

Total urinary retention treatment

A
  • Perform suprapubic catheterization when trans-urethral catheterization is contraindicated.
  • 3-7 days course with alpha-blockers can rapidly relief the obstruction in patients with BPH
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4
Q

trans-urethral catheterization is
contraindicated in?
what to do instead?

A

Perform suprapubic catheterization when transurethral CI

  • urethral trauma
  • urethral stricture
  • lower urinary tract infection
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5
Q

how ro relief the obstruction in patients with BPH

A

3-7 days course with alpha-blockers can rapidly relief obstruction

terazosin (Hytrin),
doxazosin (Cardura),
tamsulosin (Flomax),
alfuzosin (Uroxatral),
and silodosin

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6
Q

Total urinary retention must be differenciated from

A

acute anuria
( Urine output < 0.5 ml/kg/h) seen with AKI

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7
Q

Renal colic def

A

acute onset abdominal pain due to kidney stone

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8
Q

Renal colic Symptoms

A

typically, pain starts in the flank and radiates around the abdomen,
and it can radiate into
the testes in men and
the labia in women

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9
Q

Renal colic diagnostics

A
  • Definitive diagnosis by stone visualization with low-dose CT (1st line), US, or X-ray.
  • Abdominal examination is frequently unremarkable, which may help to exclude
    other differential diagnoses (acute appendicitis, peritonitis, diverticulitis,
    salpingitis, ruptured AAA).
  • If urinalysis doesn’t show microscopic hematuria, an alternative diagnosis should
    be considered.
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10
Q

Treatment Renal colic

A

Initial treatment for all patients should include
* IV fluids, analgesics, antiemetics.
* Definitive treatment is stone removal; approach guided by stone characteristics (location, size, type).
* Acute intervention is indicated in cases of ‘obstructive pyelonephritis’ -
*patient presenting with acute-onset flank pain, fever, N/V, increased inflammatory markers and
stone visible on CT.
*Treat acutely with..
-urine deviation (Double-J stent, percutaneous nephrostomy)
-antibiotics
-relieving the obstruction
-supportive

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11
Q

when is acute intervention indicated in which case of renal colic?
how is it treated?

A

in cases of ‘obstructive pyelonephritis

patient presenting with
* acute-onset flank pain
* fever
* N/V
* increased inflammatory markers
* and stone visible on CT.
*Treat acutely with..
-urine deviation (Double-J stent, percutaneous nephrostomy)
-antibiotics
-relieving the obstruction
-supportive

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12
Q

Testicular torsion def

A

results from inadequate fixation of the lower pole of the testis to the tunica vaginalis

If fixation is absent or insufficient, the testis may twist on the
spermatic cord, potentially producing ischemia from reduced arterial inflow and venous outflow obstruction.

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13
Q

Testicular torsion Etiology

A

commonly presents in males 12-18 years old;
after an inciting event (trauma,
vigorous physical activity) or spontaneously

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14
Q

Testicular torsion symptoms

A

acute, severe pain,
high-riding testis,

and absent cremasteric reflex. (Stroking of the skin causes the cremaster muscle to contract and pull up the ipsilateral testicle toward the inguinal canal.)

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15
Q

Testicular torsion diagnostic

A
  • mainly clinical
  • may be supported by color Doppler US in equivocal cases.
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16
Q

Testicular torsion treatment

A
  • orchiopexy within 6 hours (testis is directed back to place and secured to the scrotal wall). Orchiopexy should be bilateral (contralateral testis is at risk for subsequent torsion)
    *Perform manual detorsion if surgical option is unavailable in time frame
  • if testis is not viable > orchiectomy
17
Q

Acute scrotal pain (differential diiagnosis)

A
  • testicular torsion,
  • epididymitis/orchitis
  • hernia,
  • infection (prostatitis, testicular abscess)
18
Q

timeframe for orchiopexy

A

within 6 hours

19
Q

Priapism def

A

persistent erection (>4 hrs) of the penis that’s not associated with sexual stimulation or
desire

20
Q

Priapism types

A
  • Ischemic priapism (low-flow)
  • Non-ischemic priapism (high-flow) - less common
21
Q

Ischemic priapism (low-flow) def

results in what

A
  • is prolonged erection(>4hrs)
  • impaired relaxation and paralysis of cavernosal smooth muscle.
  • Results in compartment
    syndrome, with increasing hypoxia and acidosis in the cavernous tissue.
22
Q

Ischemic priapism (low-flow) results in what syndrome

A
  • Results in compartment
    syndrome,
    with increasing hypoxia
    and acidosis in the cavernous tissue.
23
Q

Non-ischemic priapism (high-flow) def

A

occurs less commonly than ischemic priapism and
is
usually the result of a fistula between the cavernosal artery and corpus cavernosum.

not an emergency usually

24
Q

Priapism etiology

A
  • idiopathic
  • sickle cell disease (risk of recurrent priapism)
  • drug-induced (sildenafil,
    trazodone, alpha-blockers, cocaine)
25
Q

Priapism Diagnostics

A
  • made clinically;
  • may use US
  • cavernosal blood gas analysis (blood aspirated from the corpora cavernosum for a blood gas analysis to differentiate between ischemic and
    non-ischemic priapism).
26
Q

cavernosal blood gas analysis

A

(blood aspirated from the corpora cavernosum for a blood gas analysis to differentiate between ischemic and
non-ischemic priapism).

27
Q

Priapism treatment

A
  • 1st line :
    *intracavernosal phenylephrine injection (alpha-agonist > vasoconstriction)
    OR
    *aspiration of blood from corpus cavernosum (with/without saline irrigation)
  • 2nd line :
    *shunting (surgical fistula is created between the corpus cavernosum
    and the corpus spongiosum, glans penis, or one of the penile veins)
28
Q

Paraphimosis def

A

retracted foreskin in an uncircumcised man that can’t be returned to normal position.

29
Q

Paraphimosis pathology

A

Impairment of lymphatic and venous flow from the constricting ring of foreskin
causes
venous engorgement of the glans penis with swelling; ultimately, arterial flow to the glans penis becomes compromised.

30
Q

If paraphimosis is not corrected in a timely fashion, the most common outcome is

A

necrosis.
In rare cases, penile necrosis, infarction of the glans, gangrene, and
autoamputation may occur

31
Q

Paraphimosis etiology

A
  • complication of phimosis, iatrogenic (following catheterization)
  • trauma (vigorous sexual intercourse, piercing)
32
Q

Diagnostics Paraphimosis

A

made clinically

33
Q

Paraphimosis Treatment:

A
  • Conservative: manual reduction with adequate pain control (topical anesthesia,
    local infiltration of anesthesia, or regional blocks)
  • Surgical :
    *dorsal slit reduction surgery ( incision of the constricting band) if manual reduction fails or penile ischemia occurs
    *OR circumcision
34
Q

Spinal cord compression Often presents to urologists because

A

metastatic prostate cancer is one of the most common
causes

35
Q

Spinal cord compression
Symptoms

A

acute-onset neurological abnormalities

36
Q

Spinal cord compression diagnosis

A

MRI

37
Q

Spinal cord compression TREATMENT

A
  • high-dose IV corticosteroids,
  • pain control
  • DVT prophylaxis
  • radiation therapy if tumor is known to be radiation-sensitive
  • spinal cord decompression surgery
    *Supporting team should include oncologist, neurologist, spinal orthopedic surgeon