Transurethral Resection of the Prostate (TURP) Guidelines

Introduction to TURP

• TURP is a minimally invasive surgical procedure that removes excess prostate tissue causing urinary obstruction, performed by inserting a resectoscope through the urethra without external incisions, and an electrified loop systematically removes prostate tissue in strips to create a wider channel for urine flow 1
• The American Urological Association recommends TURP as the gold standard surgical procedure for treating benign prostatic hyperplasia (BPH), involving removal of enlarged prostate tissue through the urethra using an electrified loop to improve urinary flow and relieve symptoms 1

Indications for TURP

• TURP is recommended for moderate-to-severe lower urinary tract symptoms not responding to medication, according to the European Association of Urology 1
• The procedure is indicated for complications of BPH, including urinary retention, recurrent urinary tract infections, bladder stones, gross hematuria due to BPH, and kidney function problems caused by BPH, as suggested by the American Urological Association 2

Types of TURP

• Monopolar TURP is a traditional approach using electric current, effective but with a higher risk of TUR syndrome, and limited resection time to reduce complications, as noted by the European Association of Urology 1, 2
• Bipolar TURP is a newer technology with an improved safety profile, reduced risk of bleeding and TUR syndrome, and allows for longer resection times and treatment of larger prostates, according to the American Urological Association 2, 3

Procedure and Recovery

• The TURP procedure involves receiving anesthesia, inserting a resectoscope through the urethra, using an electrified loop to remove prostate tissue in strips, and continuous irrigation fluid to maintain visibility, as described by the European Association of Urology 1
• Full recovery from TURP usually takes 4-6 weeks, with most patients experiencing significant improvement in urinary symptoms, as reported by the American Urological Association 1, 2

Potential Complications

• Sexual function changes, including retrograde ejaculation, occur in approximately 65% of patients, as noted by the European Association of Urology 4
• Bleeding, urinary symptoms, urethral stricture/bladder neck contracture, infection, and TUR syndrome are potential complications of TURP, with varying frequencies, as reported by the American Urological Association 4

Alternatives to TURP

• For smaller prostates, Transurethral Incision of the Prostate (TUIP) may be preferred, with a lower risk of retrograde ejaculation, as suggested by the European Association of Urology 5
• For very large prostates, simple prostatectomy or newer laser procedures like Holmium Laser Enucleation of the Prostate (HoLEP) may be considered, according to the American Urological Association 2, 5

Indications for Transurethral Resection of the Prostate (TURP)

Absolute Indications

• The American Urological Association recommends surgical intervention for renal insufficiency secondary to BPH, as bladder outlet obstruction causing kidney damage requires urgent surgical decompression 6
• Refractory urinary retention secondary to BPH, or the inability to void despite catheter trials and medical management, warrants surgical intervention 6
• Recurrent urinary tract infections attributable to prostatic obstruction and incomplete bladder emptying require surgical intervention 6
• Recurrent bladder stones due to chronic urinary stasis from obstruction necessitate surgical intervention 6
• Gross hematuria due to BPH that is refractory to medical management requires surgical intervention 6

Relative Indications

• The American Urological Association suggests that patients with moderate-to-severe lower urinary tract symptoms attributed to BPH who have not responded adequately to medical therapy, such as alpha-blockers and/or 5-alpha-reductase inhibitors, may be considered for TURP 6
• Patients unwilling to use medical therapies who have bothersome symptoms affecting quality of life may be considered for TURP 6

Technical Considerations

• TURP should be offered specifically for prostates ≤80 grams, as larger glands are better managed with simple prostatectomy or alternative techniques like HoLEP 6
• For prostates ≤30 grams, transurethral incision of the prostate may be preferred over TURP, offering lower rates of retrograde ejaculation and reduced transfusion requirements 6

Important Caveats

• The American Urological Association recommends that surgery should not be performed solely for asymptomatic bladder diverticulum, but rather evaluate for bladder outlet obstruction and treat if clinically indicated 6
• Preoperative evaluation must include AUA-Symptom Index scoring, urinalysis, and consideration of post-void residual measurement 6

Monopolar versus Bipolar TURP

• Both monopolar and bipolar TURP approaches are acceptable depending on surgeon expertise, with bipolar TURP having a reduced risk of TUR syndrome and hyponatremia 6

TURP in Patients with Renal Impairment

Surgical Approach Selection

• The American Urological Association recommends bipolar TURP over monopolar TURP in patients with renal impairment due to reduced risk of TUR syndrome and hyponatremia, which are particularly dangerous in patients with compromised renal function, allowing for longer resection times and treatment of larger prostates without the risk of hyponatremia from glycine absorption 7
• Bipolar TURP is preferred in patients with renal impairment due to its reduced risk of complications, making it a safer option for this population 7

Surgical Indications and Decision‑Making for Benign Prostatic Hyperplasia

Absolute Indications for Prostate Surgery

• Surgery is advised for patients with renal insufficiency caused by bladder outlet obstruction, persistent urinary retention despite catheter trials and medical therapy, recurrent urinary tract infections linked to incomplete bladder emptying, recurrent bladder stones from chronic urinary stasis, or gross hematuria unresponsive to medication; these conditions constitute absolute indications when no prohibitive comorbidities exist. 8
• The American Urological Association (AUA) includes the above scenarios as absolute indications for immediate surgical decompression. 9

Relative Indications for Prostate Surgery

• Moderate‑to‑severe lower urinary tract symptoms (LUTS) from BPH that have not improved with optimal medical therapy (alpha‑blockers and/or 5‑alpha‑reductase inhibitors) represent a relative indication for surgery. 8
• Patients who decline medical therapy yet experience bothersome LUTS that markedly reduce quality of life should be offered surgical options. 8
• The AUA stresses that, although LUTS/BPH is rarely life‑threatening, its impact on quality of life is substantial and warrants timely surgical consideration when medical management fails. [10][9]

Clinical Caveats

• Asymptomatic bladder diverticula alone are not an indication for surgery; however, evaluation for underlying bladder outlet obstruction should be performed, and surgery considered only if functional impairment is demonstrated. 8

Pre‑operative Evaluation (Mandatory)

• Obtain a detailed medical history and calculate the AUA Symptom Index (AUA‑SI) score. 8
• Perform a urinalysis to rule out infection or hematuria. 8
• Measure post‑void residual (PVR) volume in selected patients to assess bladder emptying efficiency. 8
• Conduct imaging (e.g., transrectal ultrasound or MRI) with sufficient resolution to determine prostate volume and identify any intravesical lobes before discussing surgical options. 8

Surgical Options According to Prostate Size

• Prostate ≤30 g: Transurethral incision of the prostate (TUIP) is preferred (not cited).
• Prostate 30–80 g: Transurethral resection of the prostate (TURP)—either monopolar or bipolar—is the gold‑standard treatment. [8][9]
• Prostate >80 g: Open, laparoscopic, or robotic‑assisted simple prostatectomy should be considered, based on surgeon expertise and patient factors. [8][9]

Evidence Benchmark and Technique‑Specific Findings

• TURP remains the reference standard against which the efficacy, safety, and effectiveness of all alternative BPH interventions are measured. 8
• Bipolar TURP offers a lower risk of intra‑operative hyponatremia and TUR syndrome compared with monopolar TURP, permitting longer resection times and suitability for larger glands. 8

Shared Decision‑Making and Counseling

• Patients must be informed that any prostate surgery can cause ejaculatory dysfunction and may potentially worsen erectile function; these sexual side effects should be discussed explicitly. [8][9]
• A comprehensive risk‑benefit profile for each surgical option should be presented to enable informed, patient‑centered decisions. 8