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The prostate gland is found in the adult male pelvis, enclosing and surrounding the posterior urethra. The primary and only function of the prostate gland is reproductive, as its secretions form a quarter of the seminal fluid. Benign prostatic hyperplasia causes gland enlargement and is a normal physiological process. However, it may lead to obstruction of the urinary flow and present as lower obstructive or irritative urinary tract symptoms. Although there are many medical and surgical methods of dealing with benign prostatic hyperplasia causing significant symptoms, treating larger glands (>80 grams in size) is especially difficult. One of the more successful, less invasive surgical treatment options for symptomatic benign prostatic hyperplasia is laser therapy, which can be used for tissue vaporization in smaller prostates or prostate gland enucleation in larger prostate glands (80 grams or more). This activity provides a detailed explanation of the HoLEP and ThuLEP techniques, highlights the indications and patient selection, reviews the benefits, and discusses strategies to avoid, recognize, and treat major complications of the procedure. Objectives: Asses the obstructive symptoms that develop due to prostatic enlargement. Evaluate the urinary symptoms and compare different types of treatment options for prostatic enlargement. Differentiate between HoLEP and ThuLEP techniques based on patient characteristics, prostate size, and comorbidities. Collaborate with anesthesiologists, nursing staff, pharmacists, and other healthcare providers to ensure patient safety and optimal outcomes during the procedure. Access free multiple choice questions on this topic.

The prostate gland is located in the male pelvis between the bladder and external sphincter muscle, where it completely surrounds the posterior urethra.[1][2] The prostate gland's primary function is reproductive, contributing approximately 25% of the seminal fluid, whereas the seminal vesicles account for about 60%. Please see StatPearls' companion resources, "Anatomy, Abdomen and Pelvis, Prostate" and "Benign Prostatic Hyperplasia," for more information. Benign prostatic hyperplasia (BPH) is a non-cancerous, progressive physiological enlargement of the prostate that primarily affects the transitional zone of the gland. This condition is a normal process associated with aging, which may eventually result in varying degrees of urinary obstruction, leading to lower urinary tract symptoms. Notably, an increase in prostate size does not always correlate with the severity of symptoms, as the degree of obstruction is influenced by other factors such as bladder function, sphincteric activity, and urethral resistance. Please see StatPearls' companion resource, "Benign Prostatic Hyperplasia," for more information. Numerous treatment options exist for managing symptomatic BPH, particularly for patients whose symptoms do not respond to medical therapy. Surgical management becomes more challenging with larger prostates (>80 g). Among the less invasive surgical options for these larger prostates is laser enucleation therapy, which includes techniques such as holmium laser enucleation of the prostate (HoLEP) and thulium laser enucleation of the prostate (ThuLEP). These techniques have shown great success in managing larger prostates with minimal invasiveness, low blood loss, short hospital stays, early postoperative removal of Foley catheters, and excellent short- and long-term relief of symptoms.[3][4]

Numerous treatment options exist for managing symptomatic BPH, particularly for patients whose symptoms do not respond to medical therapy. Surgical management becomes more challenging with larger prostates (>80 g). Among the less invasive surgical options for these larger prostates is laser enucleation therapy, which includes techniques such as holmium laser enucleation of the prostate (HoLEP) and thulium laser enucleation of the prostate (ThuLEP). These techniques have shown great success in managing larger prostates with minimal invasiveness, low blood loss, short hospital stays, early postoperative removal of Foley catheters, and excellent short- and long-term relief of symptoms.[3][4] HoLEP and ThuLEP are versatile procedures suitable for prostates of all sizes. These procedures offer a safer and more effective alternative for patients with larger glands or those who cannot undergo conventional procedures due to risks such as bleeding if they are medically unable to stop their anticoagulation.[3][5][6][7] Alternative surgical methods, such as simple open prostatectomy or simple robotic prostatectomy, are more invasive and often come with greater risks and costs.[8] The traditional approach of treating an enlarged prostate, transurethral resection of the prostate (TURP), becomes increasingly challenging for prostates weighing over 80 g. This procedure demands a high level of surgical expertise and may lead to complications such as TURP syndrome and prolonged bleeding. These challenges are exacerbated as older, more experienced surgeons retire from practice.[9][10][11][12]

Proper identification and maintenance of the capsular plane are crucial for achieving complete enucleation. For beginners, the classic three-lobe technique offers clear anatomical guidance, reducing the risk of moving out of the correct plane. Careful attention during distal dissection is critical to avoid damage to the external urinary sphincter, which could result in postoperative stress incontinence. A circumferential inverted U incision at the verumontanum, a circular incision at the apex, and the early cutting of mucosal tethers help preserve external sphincter integrity. Both holmium and thulium lasers provide excellent hemostasis due to the inherent properties of the lasers. General Complications General complications associated with HoLEP and ThuLEP include anesthetic and cardiovascular risks commonly associated with any procedure requiring a general anesthetic of similar duration. These procedures, like many other surgeries, can lead to complications such as chest infections, pulmonary embolism, stroke, deep vein thrombosis, heart attack, and, in rare cases, death. Such complications emphasize the importance of a thorough preoperative assessment and close intraoperative monitoring, particularly in patients with pre-existing medical conditions. Intensive care may be necessary for patients who develop severe cardiovascular or respiratory issues during or immediately after surgery. Acute Postoperative Urinary Retention Acute postoperative urinary retention or residual obstructive symptoms are less common complications of laser enucleation of the prostate. In a study involving 50 patients, retention occurred in 2% of ThuLEP cases and 0% in HoLEP. Another larger study involving 246 patients showed postoperative urinary retention in only 1.2% of cases.[57] Bleeding (Severe Hemorrhage or Hematuria)

Acute postoperative urinary retention or residual obstructive symptoms are less common complications of laser enucleation of the prostate. In a study involving 50 patients, retention occurred in 2% of ThuLEP cases and 0% in HoLEP. Another larger study involving 246 patients showed postoperative urinary retention in only 1.2% of cases.[57] Bleeding (Severe Hemorrhage or Hematuria) Bleeding (severe hemorrhage or hematuria) is one of the most notable and potentially serious complications.  A study by Chang et al showed that 3.2% of patients undergoing HoLEP and 4.34% of patients with ThuLEP required blood transfusions.[58] Hemorrhage can be diagnosed either intraoperatively or postoperatively when the urine color fails to clear. When this happens, the surgeon can reinsert the resectoscope to perform additional coagulation, either with the laser or the rollerball of the resectoscope. Unlike TURP, dutasteride and finasteride have minimal effects on bleeding after laser enucleation surgery. However, they may shorten morcellation time, reduce postoperative complications, and lower the postoperative prostate-specific antigen.[59][60][61] If significant bleeding occurs in the recovery room, it can be managed with a bladder washout and gentle traction on the catheter against the bladder neck, although traction should not be applied for too long to avoid ischemia and potential bladder neck stenosis. Blood tests and close monitoring of hemoglobin levels and vital signs are essential during this time. In rare cases where these measures do not control the bleeding, the patient may need to return to the operating room for further hemostasis. Studies suggest that ThuLEP is associated with less hemoglobin reduction compared to HoLEP, although the data are heterogeneous. Laser enucleation can also be used in urgent situations to manage intractable hematuria in BPH patients with very large prostates. The outcomes are equivalent to those of other laser enucleation patients. Bladder Wall Injury

In rare cases where these measures do not control the bleeding, the patient may need to return to the operating room for further hemostasis. Studies suggest that ThuLEP is associated with less hemoglobin reduction compared to HoLEP, although the data are heterogeneous. Laser enucleation can also be used in urgent situations to manage intractable hematuria in BPH patients with very large prostates. The outcomes are equivalent to those of other laser enucleation patients. Bladder Wall Injury Bladder wall injury is another potential intraoperative complication, typically caused during the morcellation phase when the enucleated prostate tissue is being fragmented and suctioned out. The bladder mucosa can be trapped in the morcellator, leading to hematuria or injury to the bladder wall, which can be identified by endoscopic visualization. Such injuries almost always occur due to insufficient irrigation inflow, as the morcellator's suction quickly empties the bladder, allowing the posterior bladder wall to engage with the morcellator blades. For example, an untrained operating room nurse entering the room may think that too many irrigation bags are running and shut some off without the surgeon's knowledge. In these cases, achieving hemostasis and leaving the Foley catheter in place longer may be necessary to aid healing. Most injuries are superficial and can be treated with a longer duration of the Foley catheter or hemostatic treatment using the laser. If the issue is identified promptly, gently disengaging the morcellator suction and carefully disassembling the instrument externally can help minimize further damage, which is why good visualization is critically necessary during morcellation. Pulling on the morcellator with the bladder wall still entrapped may turn a minor superficial injury into a major perforation. Significant bladder wall injury has been reported in up to 4% of cases, especially with inexperienced surgeons. Extraperitoneal perforations are treated with prolonged Foley catheterization, whereas intraperitoneal leaks or large remaining prostatic adenomas require an open repair. Capsular Perforation

Pulling on the morcellator with the bladder wall still entrapped may turn a minor superficial injury into a major perforation. Significant bladder wall injury has been reported in up to 4% of cases, especially with inexperienced surgeons. Extraperitoneal perforations are treated with prolonged Foley catheterization, whereas intraperitoneal leaks or large remaining prostatic adenomas require an open repair. Capsular Perforation Capsular perforation can occur during the procedure and is typically identified by the appearance of a fat plane. When this happens, the surgeon should immediately stop the procedure, achieve hemostasis, place a Foley, and postpone further intervention until the patient is stabilized. If the procedure's results are unsatisfactory, the patient may require additional treatment after thorough counseling. Some experts have suggested that if the perforation is small, the surgery may be safely continued, but the postoperative Foley may need to remain in place longer than usual depending on the severity of the tear. Infection and Fever Infection and fever are notable risks in the immediate postoperative period. A 2023 study reported that 12.4% of patients developed a fever following HoLEP, which led to early clinic visits or emergency department admissions in 7.4% of cases.[62] Positive postoperative urine cultures were recorded in 13.5% of patients. Studies comparing HoLEP and ThuLEP showed that the incidence of urinary tract infections is comparable, with urinary tract infection rates of 11.5% in HoLEP and 13.5% in ThuLEP. Injury to Ureteral Orifices Injury to one or both ureteral orifices is another possible complication. Surgeons must also take special care around the ureteric orifices during enucleation. The dissection should stay distal to the ureteral orifices to avoid injury. Standard practice includes inspecting the ureteral orifices before and after the procedure to ensure they are unharmed. If the ureteral orifices cannot be identified, the anesthetist may administer diuretics or dye to encourage urine efflux and help locate the orifices. In cases where injury is suspected, postoperative monitoring of renal function through ultrasound is required, and nephrostomy or antegrade stenting may be necessary if hydronephrosis develops. Temporary Urinary Incontinence

Injury to one or both ureteral orifices is another possible complication. Surgeons must also take special care around the ureteric orifices during enucleation. The dissection should stay distal to the ureteral orifices to avoid injury. Standard practice includes inspecting the ureteral orifices before and after the procedure to ensure they are unharmed. If the ureteral orifices cannot be identified, the anesthetist may administer diuretics or dye to encourage urine efflux and help locate the orifices. In cases where injury is suspected, postoperative monitoring of renal function through ultrasound is required, and nephrostomy or antegrade stenting may be necessary if hydronephrosis develops. Temporary Urinary Incontinence Temporary urinary incontinence is another complication, typically affecting about 30% of patients following laser enucleation, with symptoms lasting 6 weeks to 3 months and, in some cases, up to 6 months.[63] This incidence is similar to that observed in TURP. Urodynamic studies are typically recommended preoperatively for patients with significant overactive or neurogenic bladders. Postoperatively, 2% of HoLEP patients require antimuscarinic medications, compared to 0% of ThuLEP patients. In addition, 3.9% of HoLEP patients were advised to perform pelvic floor muscle exercises to manage incontinence, compared to 0% of ThuLEP patients.[64] Patients with preoperative urinary incontinence, frailty, obesity, and larger prostates are generally more likely to develop short-term postoperative incontinence.[65] In a large study involving 2512 patients from 14 centers who underwent laser enucleation for large prostates at least 80 cc in volume, age was the only identified risk factor for postoperative urinary incontinence, and preoperative prostatic volume appeared to have no influence.[66] Persistent or Chronic Stress Urinary Incontinence

In a large study involving 2512 patients from 14 centers who underwent laser enucleation for large prostates at least 80 cc in volume, age was the only identified risk factor for postoperative urinary incontinence, and preoperative prostatic volume appeared to have no influence.[66] Persistent or Chronic Stress Urinary Incontinence Persistent or chronic stress urinary incontinence is a late but serious postoperative complication. This incontinence is a relatively common complication following most bladder outlet obstruction surgeries, as these procedures can disrupt the mechanisms that maintain urinary continence. Stress urinary incontinence is involuntary urine leakage during activities that increase intra-abdominal pressure, such as coughing or lifting. In most cases, symptoms improve over weeks or months, and the risk of permanent postoperative urinary stress incontinence is about 1% to 1.5%.[67][68] If the incontinence persists and significantly affects the patient's quality of life, options such as adjustable implantable dual periurethral continence balloons or artificial urinary sphincters may be considered. Please see StatPearls' companion resource, "Artificial Urinary Sphincters and Adjustable Dual-Balloon Continence Therapy in Men," for more information. Reoperation Rates In general, reoperation rates for laser enucleations are relatively low, with good long-term outcomes. In a comprehensive 2023 study of reoperation rates, 130,106 patients from 119 studies were compared.[69] The 5-year reoperation rates for each procedure studied were reported as follows: HoLEP: 6.6% Laser vaporization of the prostate 7.1% Open prostatectomy: 4.4% Prostatic artery embolization: 23.8% ThuLEP: 8.4% Transurethral incision of the prostate: 13.4% Transurethral microwave thermotherapy: 31.2% TURP: 7.7% [69] This rate is slightly higher than the findings of several other large studies, which report a 5-year reoperation incidence for laser enucleation patients ranging from 1% to 5.9%.[6][70][71][72] Retrograde Ejaculation

ThuLEP: 8.4% Transurethral incision of the prostate: 13.4% Transurethral microwave thermotherapy: 31.2% TURP: 7.7% [69] This rate is slightly higher than the findings of several other large studies, which report a 5-year reoperation incidence for laser enucleation patients ranging from 1% to 5.9%.[6][70][71][72] Retrograde Ejaculation Retrograde ejaculation is a well-known and common adverse effect of laser enucleation procedures, affecting up to 75% of patients. Both HoLEP and ThuLEP have been associated with high rates of retrograde ejaculation, reaching up to 92%.[73] However, only 26% of patients reported this adverse effect as bothersome, and only 10% considered it severely distressing.[73] In addition, moderate erectile dysfunction was reported in about 19% of patients.[74] As retrograde ejaculation is difficult to preserve during laser enucleation, it is important to counsel patients about this expected outcome before surgery. Urethral Strictures Urethral strictures may also develop, requiring surgical treatment in the long term.[46] The risk can be minimized by extensive use of lubricant and adequate urethral dilation before placing the resectoscope. The reoperation rate for urethral strictures is about the same as for TURP at around 5% over 5 years, highlighting the importance of long-term patient follow-up.[69] The risk of urethral stricture disease or bladder neck contracture is generally higher after laser enucleation in patients who have had prior prostate surgical procedures. Please see StatPearls' companion resource, "Urethral Strictures," for more information.

HoLEP and ThuLEP represent advanced surgical techniques for treating BPH, offering the potential to significantly improve healthcare outcomes. Success in these procedures requires a well-coordinated interprofessional healthcare team consisting of surgeons, advanced practitioners, anesthesiologists, pharmacists, primary care physicians, and allied health professionals. This team ensures a patient-centered approach, optimizing both outcomes and patient safety throughout the perioperative process. Healthcare professionals involved in HoLEP and ThuLEP must possess specialized expertise. Surgeons require precise surgical skills to effectively enucleate obstructive prostate tissue while preserving surrounding structures. Anesthesiologists are responsible for the safe administration of anesthesia, taking into account each patient's unique medical requirements, especially in cases with significant comorbidities. Nurses play a critical role in preoperative, intraoperative, and postoperative monitoring, ensuring early detection of complications and providing essential patient care. Pharmacists contribute by managing medications, ensuring compatibility, and supporting perioperative pain management and anticoagulant protocols. Primary care practitioners refer patients appropriately and help monitor postoperative outcomes. A strategic approach to HoLEP and ThuLEP is essential for optimizing outcomes and minimizing complications. Evidence-based treatment plans are collaboratively developed, integrating feedback from the surgical team, nursing staff, pharmacists, and advanced practitioners. These plans focus on delivering individualized care that respects the patient's autonomy and ensures informed consent is obtained prior to surgery. Tailoring each procedure to the patient's specific requirements while also adhering to ethical standards is critical for enhancing treatment success.

A strategic approach to HoLEP and ThuLEP is essential for optimizing outcomes and minimizing complications. Evidence-based treatment plans are collaboratively developed, integrating feedback from the surgical team, nursing staff, pharmacists, and advanced practitioners. These plans focus on delivering individualized care that respects the patient's autonomy and ensures informed consent is obtained prior to surgery. Tailoring each procedure to the patient's specific requirements while also adhering to ethical standards is critical for enhancing treatment success. Each healthcare team member has defined responsibilities in the care of patients undergoing HoLEP and ThuLEP. Surgeons lead the operative team, select appropriate patients for the procedure, and oversee its technical execution. Nurses ensure thorough preoperative preparation, assist in intraoperative care, and provide postoperative monitoring and patient education. Pharmacists ensure proper medication management, particularly for patients on anticoagulants or those requiring pain management. Advanced practitioners, such as physician assistants or nurse practitioners, contribute to patient assessments, develop preoperative plans, and facilitate postoperative care, ensuring that the overall care delivery is comprehensive and seamless. Effective communication among team members is key to facilitating smooth patient care and achieving successful outcomes. Regular interprofessional meetings allow team members to discuss patient progress, share observations, and collaborate on decision-making, ensuring that the treatment plan is continuously refined and aligned with the patient's care goals. Clear communication channels, such as electronic medical records and verbal briefings, ensure that all healthcare professionals are fully informed and able to contribute to the patient's care plan.

Effective communication among team members is key to facilitating smooth patient care and achieving successful outcomes. Regular interprofessional meetings allow team members to discuss patient progress, share observations, and collaborate on decision-making, ensuring that the treatment plan is continuously refined and aligned with the patient's care goals. Clear communication channels, such as electronic medical records and verbal briefings, ensure that all healthcare professionals are fully informed and able to contribute to the patient's care plan. Care coordination plays a pivotal role in ensuring that all aspects of the patient's journey, from preoperative assessments to postoperative follow-up, are well-managed. This collaboration minimizes the risk of errors, enhances patient safety, and supports optimal recovery. Patient education is also a vital part of care coordination. Engaging patients in their own treatment decisions and educating them on self-management strategies postoperatively empower them to take an active role in their recovery, thus improving long-term outcomes. By leveraging collective expertise, strategic planning, ethical considerations, effective communication, and care coordination among the interprofessional team, HoLEP and ThuLEP procedures can provide high-quality, patient-centered care. This approach not only enhances patient outcomes but also improves the healthcare team's overall performance in managing BPH. Through these collaborative efforts, patients can benefit from reduced complications, faster recoveries, and improved quality of life following surgery.