BPH Flashcards

1
Q

What is the arterial blood supply of the prostate?

A

PROSTATIC ARTERY

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2
Q

What is the venous drainage of the prostate gland?

A

prostatic venous plexus -> internal iliac veins

-> internal vertebral venous plexus

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3
Q

What is the innervation of the prostate gland?

A

inferior hypogastric plexus

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4
Q

What are the causes of BPH?

A
  • hormones -> increased estrogen & decreased testosterone
  • growth factors -> secretion of intermediate peptide growth hormones
  • genetic factors
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5
Q

What is the pathophysiology of BPH?

A

develops in middle transitional zone (outer peripheral zone in prostatic cancer)

hyperplasia -> hyperplastic nodule smooth & firm -> slit like urethral compression -> BOO (bladder outlet obstruction)

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6
Q

What are the clinical features of BPH?

A

STORAGE irritative symptoms

  • frequency
  • urgency
  • urge incontinence
  • nocturia

VOIDING obstructive symptoms

  • straining
  • hesitancy
  • intermittency
  • poor stream
  • terminal dribbling

symptoms of superimposed infections

  • dysuria
  • hematuria
  • constitutional symptoms

incomplete emptying & chronic or acute urinary retention

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7
Q

What is felt on DRE?

A
  • symmetrically enlarged prostate
  • smooth & firm
  • nontender
  • rubbery or elastic texture
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8
Q

What investigations should be done for patient with BPH?

A
  • Urinalysis for all patients with LUTS

if abnormal findings -> urine culture

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9
Q

What is the importance of serum PSA level?

A

use in suspected prostate cancer

  • 1.5 ng/mL -> enlarged prostate
  • 4 ng/mL -> prostate cancer
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10
Q

What is the benefit of urodynamic studies?

A

helps identify the predominant type of LUTS

storage vs voiding

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11
Q

What are the indications of PVR?

A
  • all patients with suspected BOO
  • before treatment with antimuscarinic
  • baseline before surgery

findings

  • > 50ml is abnormal
  • > 300ml -> urinary retention
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12
Q

How should BPH be managed?

A

1- watchful waiting
2- medical therapy -> alpha blocker for symptoms (zosins & tamsulosin)
-> 5 alpha reductase blockers to decrease size (Finasteride & Dutasteride)
3- surgical management

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13
Q

What are the side effects of alpha 1 blockers?

A
  • orthostatic hypotension
  • dizziness
  • syncope
  • tiredness
  • peripheral edema
  • headache
  • ejaculatory problems
  • nasal congestions
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14
Q

What are the side effects of 5 alpha reductase blockers?

A
  • ED
  • decreased libido
  • gynecomastia
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15
Q

What are the indications of surgical intervention?

A

TRANSURETHRAL RESECTION OF THE PROSTATE in

  • recurrent urinary retention
  • recurrent UTIs
  • renal insufficiency
  • bladder calculi
  • recurrent gross hematuria
  • failure of medical therapy
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16
Q

What are the complications of transurethral resection of the prostate?

A
  • retrograde ejaculation
  • recurrent UTI
  • urinary retention with bladder distention & bladder wall hypertrophy
  • bladder calculi
  • hydronephrosis
  • chronic kidney disease
17
Q

What is the preferred agent to be used in case of LUTS cause by BOO (bladder outlet obstruction)?

A
  • small prostate (<40mL) or serum PSA <1.5ng/ml -> alpha blocker
  • large prostate (>40mL) or serum PSA >1.5ng/ml -> 5-alpha reductase inhibitors
  • severe symptoms or no response to therapy -> BOTH a blockers & 5-a reductase inhibitors
18
Q

What is the preferred agent to be used in case of LUTS cause by OAB (over active bladder)?

A

antimuscarinic

19
Q

What is the preferred agent to be used in case of LUTS caused by BOO & OAB?

A

alpha blocker & antimuscarinic

20
Q

What is the preferred agent to be used in case of LUTS associated with erectile dysfunction?

A

phosphodiesterase 5 inhibitor

21
Q

What are the mechanical causes of urinary retention?

A
  • enlarged prostate
  • urethral narrowing
  • bladder neck obstruction
  • extrinsic obstruction
  • urethral/bladder trauma
22
Q

What are the functional causes of urinary retention?

A
  • detrusor underactivity &/or sphincter overactivity (neurogenic bladder or drug induced)
  • detrusor-sphincter dyssynergia
  • bladder neck dysfunction
  • postoperative urinary retention
23
Q

What are the clinical features of urinary retention?

A

acute

  • sudden onset > 70 years
  • painful inability to void
  • suprapubic pain
  • palpable bladder
  • patient is restless and distressed

chronic

  • more in males
  • painless incomplete voiding
  • may have palpable bladder
  • overflow incontinence or nocturnal enuresis
24
Q

How is urinary retention treated?

A

AUR -> SURGICAL EMERGENCY -> Bladder decompression (urethral or suprapubic)

treat the cause

  • stricture -> dilatation
  • BPH -> medication
25
Q

What are the complications of urinary retention?

A

Acute -> renal failure

Chronic

  • > UTI
  • > vesicoureteric reflux -> hydronephrosis -> renal failure
  • > urolithiasis
  • > overflow incontinence

Bladder decompression

  • > hematuria
  • > transient hypotension
  • > postobstructive diuresis