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A Cost–Benefit Analysis of Bipolar TURP for the Treatment of Bladder Outflow Obstruction

Authors Pirola GM , Maggi M , Castellani D, Sciarra A, Rubilotta E, Gubbiotti M 

Received 25 April 2021

Accepted for publication 30 June 2021

Published 9 July 2021 Volume 2021:13 Pages 487—494

DOI https://doi.org/10.2147/RRU.S277480

Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 3

Editor who approved publication: Dr Jan Colli

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Giacomo Maria Pirola,1 Martina Maggi,2 Daniele Castellani,3 Alessandro Sciarra,2 Emanuele Rubilotta,4 Marilena Gubbiotti1

1Department of Urology, San Donato Hospital, Arezzo, Italy; 2Department of Urology, Sapienza Rome University, Policlinico Umberto I, Rome, Italy; 3Department of Urology, Ospedali Riuniti di Ancona, Le Marche Polytechnic University, Ancona, Italy; 4Department of Urology, A.O.U.I, Verona University, Verona, Italy

Correspondence: Marilena Gubbiotti
Department of Urology, San Donato Hospital, Arezzo, 52100, Italy
Tel +393383910645
Email [email protected]

Abstract: Transurethral resection of the prostate (TURP) is the gold standard surgical technique for endoscopic treatment of benign prostatic hyperplasia (BPH). Introduced in 2001, the bipolar energy appeared to be a valid alternative to the classical monopolar one with reduced risk of complication related to the use of saline irrigation and to the increased hemostatic efficacy. More recently, raising attention has been given to laser enucleation and vaporization techniques, which appear to achieve further advantages in terms of reduced hospital stay and complications compared to the resection ones. Few studies have investigated the cost/benefit ratio related to these techniques. The aim of this systematic review was to analyze the cost/benefit ratio of bipolar TURP (B-TURP) compared with other endoscopic procedures.

Keywords: benign prostatic hyperplasia, transurethral resection of the prostate, bipolar TURP, bladder obstruction

Introduction

Benign prostatic hyperplasia (BPH) is a common disease in elderly men, characterized by a combination of storage and voiding symptoms, with a progressive decreased detrusor efficacy for bladder voiding and worsening of lower urinary tract symptoms (LUTS).1 Data from a large multicentric European trial reported an overall prevalence of LUTS due to BPH of 10.3%.2 The prevalence rate was lowest among males aged 45–49 years (2.7%) and increased with age until 24% in men over 80 years. Therefore, this condition represents a major public health concern and financial burden with significative implications in terms of healthcare costs for both patients and society.3,4 After failure of medical treatment, the standard referral surgical techniques are transurethral resection of the prostate (TURP) for low- to medium-sized prostate volumes (PV; >80 cc), or open prostatectomy (OP) for higher PV.5–8

Since its first adoption in 2001, the bipolar energy appeared to improve TURP safety in comparison to monopolar TURP (M-TURP), in terms of reduced amount of delivered energy to achieve thermal cutting/ vaporization of tissue, and lower risk of TUR syndrome related to saline irrigation.9,10

In the last decade, many other technologies have been purposed and validated. The most widely used are Green Light photoselective vaporization of the prostate (PVP) and laser enucleation techniques, such as Holmium Laser Enucleation of the Prostate (HoLEP) and Thulium Laser Enucleation of the Prostate (ThuLEP).11,12 Even if these approaches have shown to achieve results comparable to the standard technique (ie, TURP) with regards to functional outcomes, only few studies have investigated the cost/ benefit ratio related to these procedures. Indeed, these innovative techniques might present an increased cost in terms of equipment and consumables. On the other hand, equipment costs may be balanced by reduced hospital stay and complication rates.13 Thus, it is crucial especially in a “cost- saving” era for national healthcare systems worldwide to address this issue. The aim of this review was to analyze the cost/ benefit ratio of bipolar TURP (B-TURP) compared with other endoscopic procedures.

Methods

We systematically searched on all the electronic databases (MEDLINE, Web of Science, Cochrane Library, and Scopus) in the last twenty years for comparative trials analyzing bipolar TURP and other innovative endoscopic techniques (ie, monopolar TURP, PVP, HoLEP and ThuLEP) in terms of cost-benefit analysis. Two Authors (GMP and MM) independently screened all the papers and two other Authors (DC and ER) excluded non-pertinent articles. AS and MG supervised the overall work. We followed PRISMA criteria for systematic review, and a detailed flowchart is provided in Figure 1. A brief overview of the principal studies included in the work is provided in Table 1.

Table 1 Summary of the Most Relevant Studies Included in This Review Comparing Cost Analysis of B-TURP with Other Techniques

Figure 1 Preferred reporting items for systematic reviews and meta-analyses (PRISMA) flow diagram.Note: Adapted from Moher D, Liberati A, Tetzlaff J, Altman DG, The PRISMA Group. Preferred Reporting Items for Systematic Reviews and Meta-Analyses: The PRISMA Statement. PLoS Med . 2009;6(7): e1000097.36

Cost/ Benefit Ratio of Bipolar versus Monopolar TURP

Despite the introduction of lasers and evolving technologies in the field of urology, transurethral resection of the prostate (TURP) is still considered the gold standard procedure for endoscopic treatment of prostatic adenoma. This has traditionally been performed by a monopolar resector that delivers energy in glycine medium, but the morbidity associated to glycine reabsorption (TURP syndrome) has led to the introduction of bipolar system. In bipolar TURP, energy is confined between electrodes at the site of the resectoscope, allowing the use of physiological irrigation medium. However, both techniques are adopted in clinical practice.

Ruiz-Deya et al14 published the first relative report in 2002. The authors reported an important cost saving with bipolar system due to saline irrigation, estimated to be 10.56% less than the monopolar approach. Although the authors did not consider the devices costs (ie, energy generators and consumables), they found an overall saving of $1138 per patient, mostly due to the reduced likelihood of TUR syndrome or severe hematuria documented in the bipolar series.

A subsequent study by Sugihara et al15 provided relevant data from a multicentric Japanese cohort of 1531 B-TURP versus 5155 M-TURP patients. B-TURP appeared safer in terms of reduced transfusion rate (20 versus 118, p= 0.018), overall complications incidence (26 versus 172, p= 0.001), and reduced length of stay (LOS) (7 ± 5.0 versus 8 ± 4.7 days, p= 0.003). Among reported complications, TUR syndrome occurred in 16 M-TURP patients versus none after B-TURP. The estimated total charge for each patient was $6062 ± 2020 for B-TURP versus 6103 ± 2100 for M-TURP (p= 0.480, representing 1.7% reduction).

A metaanalysis (MA) by Treharne et al16 analyzed separately the main factors that provided significantly differences in clinical outcomes and that directly affected costs: TUR syndrome, blood transfusions, clot retention, and LOS. Based on UK registers, they found that overall higher equipment costs for bipolar devices were offset by saving costs from reduced LOS and lower complications. Assuming a decrease in LOS of 0.56 days from the meta-analysis, B-TURP was associated with a £165.02 reduction for LOS per patient versus M-TURP. B-TURP was also related with a £71.82 per patient reduction in complication rates, as well as a £154.75 saving per patient due to reduced readmission rate, generating an overall estimated saving of more than £3.4 million per year in the UK. A further investigated aspect was the possibility to deliver this surgery on a day-case basis. As showed, the estimated cost saving amounted of around £801.00 per patient. Therefore, B-TURP appeared more advantageous in terms of efficacy, safety and cost-effectiveness than M-TURP.

Cost/ Benefit Ratio of TURP versus PVP

One of the most popular BPH laser techniques is GreenLight Prostate Laser Vaporization (PVP). As its chromophore is blood, this laser has a deep penetration into soft tissues. High power green laser energy is delivered sideways into prostate tissue, producing tissue vaporization and soft tissue ablation, with an excellent hemostatic property.

Since its introduction, PVP has emerged as a promising surgical treatment for the management of BPH, exhibiting both efficacy and safety outcomes comparable to the standard of care (ie, TURP), with a durable response.17,18 Moreover, PVP has started to gain increasing acceptance worldwide due to a shorter LOS and catheterization, a faster return to stable health status, and the possibility of an outpatient surgery regimen. PVP has also demonstrated to provide real-time tissue debulking with an excellent hemostasis, even in high-risk patients and those on ongoing oral anticoagulation or antiplatelet agents.19,20 Despite these main advantages, PVP has been criticized for limited reduction of PV, prolonged storage symptoms, and the cost of equipment and accessories. To date, only few studies have assessed a cost- effectiveness analysis comparing TURP and PVP.

Goh et al,21 analyzing the actual peri-operative hospital costs (ie, procedure and immediate peri-operative visit) of 250 patients undergoing TURP and 220 PVP in 2 private institutions in UK, found that the overall cost of TURP were significantly higher than those of PVP ($5.097 ± $5.003 versus $4.266 ± $1.182, respectively; p= 0.01). This cost difference was likely due to the higher percentage of PVP patients treated on an outpatient basis, compared to TURP patients (95% versus 78%, p <0.01). Moreover, authors found that complications that prolonged LOS, which further added expenses, were associated with TURP, yet not with PVP. Bouchier-Hayes et al22 reported similar results in a randomized trial versus TURP, in which a cost analysis has been assessed in a small subset of patients (ie, 5 cases from each group). Of note, since all cases had a standard post-operative care pathway, excessive LOS due to complications did not bias their data. Findings regarding capital cost per procedure showed that PVP was 22% cheaper than TURP (TURP $4.277 versus PVP $3.221), mainly due to the shorter LOS following PVP. These results were also in line with the study by Hsu et al,23 who compared costs between 100 TURP and 100 PVP procedures in a single institution in China. Complication rate did not differ between the two groups, yet LOS was significantly shorter for PVP technique. However, the total admission charges for PVP were significantly higher than those for TURP, due to the higher equipment cost of the laser (ie, laser fiber); other admission charges were similar, so that Authors concluded that the only disadvantage related to PVP is the cost of the laser fiber. Stovsky et al24 estimated the economic burden for 5 different surgical procedures for BPH (ie, TURP, PVP, ILC, TUNA and TUMT) evaluating costs of initial procedures, related complications, re- treatment and routine follow- up care over a period of 24 months. At each time interval, TURP showed higher estimated costs per patient than PVP (eg, 6 months: TURP $4.030 versus PVP $3.020; 24 months: TURP $4.927 versus PVP $3.589). According to sensitivity analysis, PVP re- treatment rate at which the cost of PVP would be equal to that of TURP was 17%, which is higher than rates reported in the literature.25 Since PVP showed lower complications and re- treatment rates, Authors concluded that the economic benefit of PVP mainly derived from these aspects. Equivocal findings have been reported in the study by Whitty et al,26 in which the estimated costs of TURP and PVP have been modeled using a decision- analytic model based on a cost- minimization approach in a real- world setting in an Australian public institution, reporting no significant difference in costs between the two groups. According to their base- case analysis (ie, equipment, training and re-intervention costs) on 335 TURP and 71 PVP patients, PVP was found to cost AU$ 739 more per patient than TURP, yet sensitivity analyses performed excluding equipment and training costs, or on data from the most favorable hospital, found PVP as less costly. These results could be partially explained by the fact that PVP data were obtained during its initial implementation in clinical practice suggesting that, after a proper establishment in clinical practice, PVP could be a cost saving procedure. More recently, Caicedo et al27 carried out an economic evaluation using cost- utility ratio of TURP versus PVP, which accounted for surgical procedures, complications, re- operations and re- interventions (ie, interventions due to prostate re- growth and complications related to the initial procedure, respectively). Costs for PVP resulted to be US $979.62 more than for TURP, yet PVP was more cost- effective than TURP. Furthermore, at both deterministic and probabilistic sensitivity analyses PVP appeared as the most expensive yet also the most efficacious procedure. Similarly, in the study by Benejam-Gual et al,28 a cost- utility analysis has been conducted, evaluating costs associated with TURP and PVP procedures, complications, and re- interventions, during a 24 months period. According to this analysis, PVP was slightly more efficacious, yet also cheaper than TURP (difference of total cost per patient= −393 euros). In this series, the main determinant of costs was associated with the surgical procedure. Of note, Authors found that the post-operative phase was responsible for this cost difference, which compensated for the greater PVP equipment costs. Thomas et al29 assessed estimates of costs of TURP versus PVP procedures analyzing data from three MA and GOLIATH trial, the largest RCT comparing PVP and M-TURP. According to their analysis, costs were almost equal between the two procedures. However, it was estimated that when >32% of PVP are managed as a day case, significant savings can be expected.

Cost/ Benefit Ratio of B-TURP vs Laser Enucleation Procedures

In alternative to PVP, other laser technologies aiming to prostate enucleation rather than vaporization were largely adopted during the last 20 years. The main advantage of those techniques is that they allow a complete enucleation of the adenoma, achieving similar results to open simple prostatectomy without the comorbidity of a major surgery. The main two widespread techniques are Holmium Laser Enucleation of the Prostate (HoLEP) and Thulium Laser Enucleation of the Prostate (ThuLEP).

First proposed by Fraundorfer and Gilling,30 laser enucleation techniques were encouraged to overcome the problem of treating large-sized adenomas (>70 cc). The mostly widespread technique is HoLEP. Although many papers report short- and long-term functional results comparable with OP and TURP, a relative cost/ benefit analysis has not frequently been assessed.

Fraundorfer et al31 outlined a comparative cost-analysis of Holmium Laser Resection of the Prostate (HoLRP) and B-TURP. Due to reduced catheterization time, reduced LOS, less risk of bleeding and reduced incidence of complications observed following HoLRP, while offering equivalent functional outcomes, HoLRP showed a 24.5% cost savings over TURP, when in-hospital and post-discharge events were analyzed.

Salonia et al32 firstly provided an immediate- and short-term cost comparison between HoLEP and OP. The significant reduction in blood loss, catheterization time and LOS in the HoLEP group appeared to be more cost-effective than the relatively higher operative time (contributing an average of 25.1% to the cost of HoLEP) and instrumentation costs of the laser technique. Moreover, the cost of laser fibers (that allows at least 10 utilizations) was aligned with the disposable costs of the TURP loops.

A study by Schiavina et al33 compared the overall costs of HoLEP, TURP and OP among a large series of BPH patients. Even if all the three techniques appeared to achieve similar results in terms of symptoms relief, there were significant differences in terms of costs. Operative room usage, anesthesiology and disposable products’ costs revealed to be significantly higher for HoLEP in prostate glands ≤70cc, when compared to those treated with TURP (p ≤0.001), with a difference in median direct costs of 866.62€ versus 650.90€. However, indirect costs related to hospital stay were inferior for HoLEP, thus the median global cost of TURP was similar to HoLEP (2151.69€ versus 2185.61€, respectively; p =0.61). On the other hand, considering patients with PV >70 cc, median global cost for HoLEP was found to be lower than median global cost for OP (2174.15€ versus 4064.97€, respectively; p ≤0.001).

The other main laser enucleation technique is ThuLEP. For its physical properties, Thulium laser achieves both enucleation and vaporization of prostatic tissue, therefore it should be considered also in terms of Vapoenucleation (ThuVEP) or Vaporesection (ThuVARP).34

Noble et al35 presented in 2020 a cost-comparison analysis between TURP and ThuVARP whit data from the UK-UNBLOCS study, which is a multicentric UK clinical trial designed to assess the clinical comparison between B-TURP and ThuVEP in 410 patients. The total adjusted mean costs in the TURP arm resulted similar to the ThuVARP arm (£4244 versus £4252), with a cost difference of £9 (95% CI: £376, £359). Authors outlined that the potential benefit of ThuVARP in terms of reduced LOS and potential to be done as a day-case did not materialise. Therefore, B-TURP is still a cost-effective procedure for BPH surgical treatment.

Conclusion

Even if only few articles have investigated the cost/ benefit ratio of surgical treatment for BPH, B-TURP still appears to be a valid option by a clinical yet also economic point of view. However, laser techniques represent a valid alternative to TURP, not only in terms of minor complications and similar functional outcomes, but also in terms of costs. Their widespread use, together with lower purchase costs, would probably make laser devices more appealing for the next generation of urologists.

Disclosure

The authors report no conflicts of interest in this work.

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