BPH Flashcards
What is BPH?
Enlarged prostate in the absence of malignancy
Can impede passage of urine leaving the bladder
-Growth of prostatic glandular tissue into lumen of urinary tract
-Increased smooth muscle tone of prostatic stroma and at bladder neck
lower urinary tract sxs (LUTS) of BPH?
Weak urinary stream
Urinary hesitancy
Stream intermittency
Post void dribbling
Nocturia
AUA (American Urological Association) Symptom Score
How do pts with BPH present?
Urinary retention
Recurrent urinary tract infections
Hx of cystolithiasis, other urolithiasis
PE for BPH?
GU exam, DRE
What labs should you check for BPH?
UA
PSA
What urologic tests can you check for BPH?
Uroflow study—low flow rate
Post void residual – high residual
Cystoscopy—trabeculation, obstructive prostate encroaching into urinary outlet lumen, “kissing lobes”
Urodynamic study (UDS) may be indicated—low flow, elevated intravesical pressures
Elevated intravesical pressure puts… at risk
the kidneys
Tx options for BPH?
Watchful waiting
Lifestyle modification
Medication
Surgery
What are some possible lifestyle modifications for BPH?
avoid fluid intake and diuretics in PM
if leg edema, elevate legs in evening to mobilize and eliminate fluid
Avoid drinks/food that exacerbate sx (caffeine, EtOH, acidic or spicy foods)
double void
avoid pseudoephedrine/ alpha agonists
Caution with anticholinergics: can cause retention
What meds can be used to tx BPH?
Phytotherapy: plant therapy
Alpha-blockers
5-alpha-reductase inhibitors (5-ARI)
MOA of alpha blockers?
Block stimulation of alpha-1 receptors of prostatic stroma and bladder neck
> relaxation of smooth muscle that restricts the flow of urine
> Relaxation allows for freer passage of urine
Examples of Alpha 1 blockers?
Terazosin 1-10 mg
Doxazosin 1-8 mg
Examples of Alpha 1-A blockers?
Tamsulosin 0.4-0.8 mg
Alfuzosin 10 mg
Silodosin 4-8 mg
Alpha 1 blockers v. Alpha 1-A blockers?
Alpha-1-A blockers are more specific in targeting the urinary effects, while avoiding effects on blood pressure and nasal passages
ADEs of Alpha Blockers?
Dizziness
Asthenia
Nasal congestion
Orthostatic
hypotension/syncope (rare)
Retrograde ejaculation
Intra-operative floppy iris syndrome (IFIS)- don’t start if cataract surg coming up
MOA of 5 alpha reductase inhibitors?
Block conversion of testosterone to DHT
Lower DHT levels
Decrease prostatic glandular volume
Increase max urinary flow rates
Improve AUA sx scores
Decrease risk of BPH progression
How long should a pt be on 5- alpha reductase inhibitors to see effect?
6 months
What change in a pt labs will you see in pt taking a 5-alpha reductase inhibitor?
decreased in PSA by 50%
Who are 5 alpha reductase inhibitors most effective in?
in larger volume prostates >40 cc and PSAs greater than 1.4
Examples of 5 alpha reductase inhibitors?
Finasteride 5 mg po daily
Dutasteride 0.5 mg po daily
ADEs of 5 alpha reductase inhibitors?
Impotence
Decreased libido
Lower ejaculatory volume
Gynecomastia
What can you give to a pt who has BPH and ED?
Tadalafil (Cialis)
Surgical options for BPH?
Transurethral Microwave Thermotherapy (TUMT)
Transurethral Incision of Prostate (TUIP)
Urolift ®
Transurethral Resection of Prostate (TURP)
Photoselective Vaporization of Prostate (PVP)
Open simple prostatectomy
Holmium Laser Enucleation of Prostate (HoLEP)
Describe Transurethral Microwave Thermotherapy (TUMT)
Microwave device heats prostate and causes necrosis
Minimally invasive, outpatient, awake
Prostatic tissue sloughs and passes per urethra when patient voids