Device Malfunctions and Complications Associated with Benign Prostatic Hyperplasia Surgery: Review of the Manufacturer and User Facility Device Experience Database

Assessing the Reproducibility of Research Based on the Food and Drug Administration Manufacturer and User Facility Device Experience Data

OBJECTIVE

This article aims to assess the reproducibility of Manufacturer and User Facility Device Experience (MAUDE) data-driven studies by analyzing the data queries used in their research processes.

METHODS

Studies using MAUDE data were sourced from PubMed by searching for "MAUDE" or "Manufacturer and User Facility Device Experience" in titles or abstracts. We manually chose articles with executable queries. The reproducibility of each query was assessed by replicating it in the MAUDE Application Programming Interface. The reproducibility of a query is determined by a reproducibility coefficient that ranges from 0.95 to 1.05. This coefficient is calculated by comparing the number of medical device reports (MDRs) returned by the reproduced queries to the number of reported MDRs in the original studies. We also computed the reproducibility ratio, which is the fraction of reproducible queries in subgroups divided by the query complexity, the device category, and the presence of a data processing flow.

RESULTS

As of August 8, 2022, we identified 523 articles from which 336 contained queries, and 60 of these were executable. Among these, 14 queries were reproducible. Queries using a single field like product code, product class, or brand name showed higher reproducibility (50%, 33.3%, 31.3%) compared with other fields (8.3%, P = 0.037). Single-category device queries exhibited a higher reproducibility ratio than multicategory ones, but without statistical significance (27.1% versus 8.3%, P = 0.321). Studies including a data processing flow had a higher reproducibility ratio than those without, although this difference was not statistically significant (42.9% versus 17.4%, P = 0.107).

CONCLUSIONS

Our findings indicate that the reproducibility of queries in MAUDE data-driven studies is limited. Enhancing this requires the development of more effective MAUDE data query strategies and improved application programming interfaces.

Are adverse events during surgery for benign prostatic hyperplasia device related? A review of the MAUDE database

PURPOSE

The Manufacturer and User Facility Device Experience database contains anonymous, voluntary medical device reports. A review of device-related adverse events associated with Benign Prostatic Hyperplasia surgeries was completed. The objective was to evaluate the occurrence and contributing factors to clinically significant complications in a cohort of patients electing to undergo surgical intervention for Benign Prostatic Hyperplasia.

METHODS

The Manufacturer and User Facility Device Experience database was queried for "Aquablation, Greenlight Laser, Holmium Laser, Morcellator, Water Vapor Thermal Therapy, Loop Resection, and Prostatic Urethral Lift" from 2018 through 2021. A complication classification system (Level I-IV) based on the Clavien-Dindo system was used to categorize events. These events were then correlated with procedural technology malfunctions and classified as "device related" and "non-device related." Chi squared analysis was performed to identify associations between procedural technology and complication classification distribution.

RESULTS

A total of 873 adverse events were identified. The adverse events were classified into level I (minimal harm) versus levels II-IV (clinically significant). Aquablation (p < 0.017) and Water Vapor Thermal Therapy (p < 0.012) were associated with a higher proportion of reports with Level II-IV complications compared with other procedure types. Level II-IV complications were not associated with a reported device related malfunction.

CONCLUSIONS

Aquablation and water vapor thermal therapy demonstrated noteworthy clinically significant complications which were not driven by device-related malfunctions.

Complications associated with minimally invasive surgical therapies (MIST) for surgical management of benign prostatic hyperplasia: a Manufacturer and User Facility Device Experience (MAUDE) database review

PURPOSE

MAUDE database houses medical device reports of suspected device-related complications received by Food and Drug Administration. In the present study we aim to evaluate the MAUDE database for reported complications of MIST procedures.

METHODS

The database was queried using keywords: rezum, urolift, prostate embolization (PAE), transurethral needle ablation (TUNA), transurethral microwave therapy (TUMT), prostate stent and Temporarily Implanted Nitinol Device (iTIND) on 10/1/22 to extract information regarding device problems and procedure-related complications. Gupta classification system was used to stratify complications. Statistical analysis was performed to compare frequency of complications among MIST procedures.

RESULTS

We found a total of 692 reports (Rezum-358, urolift-226, PAE-53, TUNA-31, TUMT-19, prostatic stent-4, and iTIND-1). Most complications related to device or users were minor (level 1 and 2) and there was no significant difference among various MIST procedures. The screen/system error was responsible for 93% and 83% aborted cases in Rezum and TUNA, respectively, and PAE showed 40% of device component detachment/fracture. Overall Urolift and TUMT were associated with statistically significant higher incidence of major (level 3 and 4) complications (23% and 21%, respectively) as compared with Rezum (7%). Most major complications needing hospitalization after Urolift included hematoma and hematuria with clots and those after Rezum included urinary tract infection and sepsis. Thirteen deaths were reported, mostly due to cardiovascular events, which were classified as not associated with the proposed treatment.

CONCLUSION

MIST for BPH can occasionally cause significant morbidity. Our data should assist urologists and patients in shared decision-making process.

Aquablation, Prostatic Urethral Lift, and Transurethral Water Vapor Therapy: A Comparison of Device-Related Adverse Events in a National Registry

Purpose: Aquablation, prostatic urethral lift (PUL), and transurethral water vapor therapy (TWVT) have demonstrated efficacy for the treatment of benign prostatic hyperplasia (BPH). Our objective was to describe device malfunctions and complications to help guide procedural selection and performance. Materials and Methods: The Manufacturer and User Facility Device Experience (MAUDE) database was examined for reports related to the use of these three procedures for the treatment of BPH between January 1, 2015, and July 1, 2020. Reports were evaluated for device malfunctions and surgical complications using a previously described externally validated classification system developed for the MAUDE database. Chi square analysis was used for statistical comparison between groups. Results: A total of 391 adverse events were reported: aquablation (n = 102), PUL (n = 132), and TWVT (n = 157). There were 79 (78%) severe or life-threatening adverse events for aquablation vs 69 (52%) for PUL vs 24 (15%) for TWVT (p < 0.001). There were 4 cases of rectal perforation with aquablation and 25 cases of the PUL implants needing to be removed or causing a problem with a later procedure. Blood transfusion frequencies were aquablation-32 (31%), PUL-21 (16%), and TWVT-1 (1%). The most common device malfunctions were: aquablation-motion error (n = 8), handpiece fracture/attachment malfunction (n = 8); PUL-device misfire (n = 27), needle fragmentation (n = 21); TWVT-unresolvable error message (n = 19). Conclusions: In a national database, aquablation and PUL had noteworthy complications or device-related malfunctions such as rectal perforation and the improper placement or failed deployment of the PUL implants. Both patients and providers should be aware of potential risks when selecting these novel BPH treatments.

Effect of hospital, community and home care model on nursing and quality of life of patients after transurethral resection of benign prostatic hyperplasia

OBJECTIVE

To explore the effect of hospital, community and home care model on the nursing effect and quality of life of patients with benign prostatic hyperplasia (BPH) undergoing transurethral resection.

METHODS

As a prospective study, 89 patients with transurethral resection of BPH were randomly divided into two groups by different nursing methods: a research group and a control group. The control group (n=41) received regular nursing, and the research group (n=48) received hospital, community and home care intervention. Both nursing methods were performed from patients' admission to discharge. The changes of psychological status (measured by Hamilton Anxiety Rating Scale (HAMA) and Hamilton Depression Rating Scale (HAMD)), self-care ability (measured by Exercise of Self-care Agency Scale (ESCA)) and quality of life (measured by Benign Prostatic Hyperplasia Quality of Life Scale (BPH-QLS)), the incidence of postoperative complications and nursing satisfaction of patients before and after intervention were compared between the two groups.

RESULTS

After nursing, the HAMA and HAMD scores in the research group were lower than those in the control group; the ESCA score and BPH-QLS score were higher than those in the control group (P<0.05); the incidence of complications in the research group was lower than that in the control group (P<0.05); the nursing satisfaction in the research group was higher than that in the control group (P<0.05).

CONCLUSION

The intervention of hospital, community and family care nursing model for patients with transurethral resection of BPH can reduce the occurrence of complications, significantly improve their psychological status and self-care ability, thus improving the quality of life and nursing satisfaction of patients.

Post-Surgical Complications After Bladder Outlet Reducing Surgery: An Analysis of The FDA Manufacturer and User Facility Device Experience (MAUDE) Database

OBJECTIVE

To examine voluntary reports in the Food & Drug Administration (FDA) Manufacturer and User Facility Device Experience (MAUDE) database, categorize complications and assign device-related causality with transurethral resection of the prostate (TURP), prostatic urethral lift (PUL), and transurethral water vapor therapy (TWVT).

METHODS

A review was performed using the terms "Urolift," "Rezum," and "transurethral resection of the prostate" between 01/01/2015 and 12/31/2019. Duplicate and incomplete reports were excluded. The Gupta system was used to report complications and device related causality.¹ Pearson's Chi-square analysis was performed to compare minor (Level 1) versus major (Levels 2-4) complications.

RESULTS

A total of 548 events were examined. After removal of duplicates (n = 60), irrelevant reports (n=65), and incomplete information (n = 14), we included 409 events (74.6%). Of the 409 events, 214 were for TURP, 112 for TWVT, and 83 for PUL. In aggregate, 39.4% of events were minor/Level 1 (n=161/409). The proportion of subjects with Level 2-4 complications versus Level 1 complications was significantly higher for PUL than TURP or TWVT [X² (2, N = 408) = 41.4023, P < .00001]. Device causality was attributable to device malfunction in 60.4% of cases (n=247/409).

CONCLUSION

Device malfunction was noted in all groups and 39.4% of these were minor (Level 1). However, the majority of PUL reports noted a Level 3 or 4 complication (50.6%, 42/83), primarily bleeding related. Previous studies have not revealed significant risk of bleeding and suggests a discrepancy between study data and real-world experience that may alter patient counseling practices.

Morcellation After Endoscopic Enucleation of the Prostate: Efficiency and Safety of Currently Available Devices

CONTEXT

Although several studies have compared different morcellators and enucleation techniques for the management of benign prostatic hyperplasia (BPH), there is sparse literature on morcellation, so further experimental and clinical research is required for its optimization.

OBJECTIVE

To critically appraise the contemporary literature on prostate morcellation and to evaluate the safety and efficiency of currently available morcellators for endoscopic enucleation of the prostate (EEP) in the context of BPH.

EVIDENCE ACQUISITION

A comprehensive review of the English and French literature relevant to prostate morcellation was performed using the PubMed-MEDLINE, Cochrane Library, Web of Science, and Wiley Online Library database from 1998 to 2020 using PICOS (patient population, intervention, comparison, outcome, and study design) criteria.

EVIDENCE SYNTHESIS

We retrieved 26 studies involving 5652 patients treated with a morcellator that were eligible for data extraction and analysis. The mean patient age was 67.4 (range 61.4-72.8) yr. The weighted mean efficiency of Piranha, VersaCut, and DrillCut morcellators was 5.29, 3.95, and 5.3 g/min, respectively. Several approaches, such as en bloc, two-lobe, inverse, and improved techniques, may increase morcellation efficiency and safety. The lowest weighted mean rate of bladder wall injury was 1.24% for Piranha, followed by 1.98% for DrillCut, and 5.23% for VersaCut, while the VersaCut morcellator had the lowest weighted mean rate of device malfunction at 0.74%, compared to 2.07% for Piranha and 7.86% for DrillCut.

CONCLUSIONS

All three morcellators are efficient and safe for prostatic morcellation after EEP. Further development of devices and techniques may improve the efficiency and safety profile of morcellation. To increase safety, surgeon expertise, technical equipment, and patient characteristics should be considered. Therefore, interdisciplinary exchange of knowledge and further technological innovations are strongly encouraged.

PATIENT SUMMARY

We reviewed the safety and efficacy of devices called morcellators. These devices cut tissue into small pieces that are easier to remove from the body, and are used during laser surgery for benign enlargement of the prostate. Three morcellators are currently available on the market and are comparable in safety and efficacy.