JVIR twitter

Monday, August 17, 2020

Use of 70- to 150-mm Radiopaque Spherical Embolics for Prostatic Artery Embolization


Clinical question
To describe the use of radiopaque spherical embolics for PAE in treating lower urinary tract symptoms secondary to BPH

Take away point
PAE with 70- 150-mm radiopaque spherical embolics are safe and effective for treating lower urinary tract symptoms secondary to BPH

Reference

Maron, S. Z., et al. (2020). "Use of 70- to 150- mm Radiopaque Spherical Embolics for Prostatic Artery Embolization." Journal of Vascular and Interventional Radiology 31(7): 1084-1089.

Click here for abstract

Study design
Retrospective

Funding Source
None

Setting
Academic hospital, Department of Radiology, Icahn School of Medicine at Mount Sinai, Mount Sinai Hospital, New York





Figure 4. Axial and coronal cone-beam CT of left-sided distribution of microspheres. (a) Axial cone-beam CT performed immediately after bilateral PAE (the left side was treated first) demonstrates predominantly left-sided distribution of 70- to 150-μm radiopaque mi- crospheres in the prostate gland (arrow). (b) Coronal cone-beam CT performed immediately after bilateral PAE (left side was treated first) demonstrates predominantly left-sided distribution of 70- to 150-μm radiopaque microspheres in the prostate gland (arrow).

Summary


Prostatic artery embolization (PAE) is effective for treating lower urinary tract symptoms (LUTS) of benign prostatic hyperplasia (BPH), however previous studies have described clinical failure rates up to 25%. The authors investigated the effectiveness of 70- 150-mm radiopaque microspheres for PAE. The 70- 150-mm spheres have intrinsic radiopacity allows visualization of the embolic distribution and a more targeted embolization. Additionally, the 70- 150-mm may provide additional clinical benefit due to a deeper embolization.

The authors reviewed 21 patients who underwent bilateral PAE with 70- 150-mm radiopaque spherical embolics over the course of one year. Of the 21 patients, 6 had indwelling urinary catheters and 2 required intermittent self-catheterization. The primary outcome was evaluated using the International Prostate Symptom Score (IPSS), quality of life score (QOL), and International Index of erectile function 5 questionnaire (IIEF-5). The prostate size was assessed with MRI at 6 months.

Technical success, defined by stasis in both prostatic arteries and direct visualization of the treated area on cone-beam CT, was 81% (17/21). 4 cases could not be embolized bilaterally due to tortuosity and atherosclerotic disease. 19/21 patients had transradial access and 2/21 received transfemoral access. The mean total embolic used was 6.5 mL. Non-target embolization was identified in 2 cases. 4 of 6 patients with indwelling catheters were able to remove their catheters at an average of 42 days post procedure. Neither patient requiring intermittent catheterization was able to progress to spontaneous voiding. Reported adverse events included dysuria, pelvic pain, hematospermia, and hematuria. One major complication was because of E coli urosepsis, however, was thought to be unrelated to PAE. Of the 2 cases of non-target embolization, 1 experienced hematospermia and 1 was asymptomatic.

The clinical response was positive at 1 and 2 months follow up, with improvement observed in QOL (-2 ± 1.2), IPSS (10.6 ± 7.6), and IIEF (9.3 ± 4.1) scores. The rate of successful urinary catheter removal was 67%. The prostate volume decreased by a mean of 28 ± 16.2 g at 6 months.

Commentary


The authors retrospectively reviewed 21 patients who received bilateral PAE with 70- 150-mm radiopaque spheres. The radiopaque spheres provide direct visualization of the embolized area on cone beam CT and allow for assessment of non-target embolization. Improvements in QOL, IPSS, and IIEF scores are promising, and the clinical results from this study are comparable to results from previous PAE meta-analyses. The theory that smaller embolics may produce further clinical benefit is intriguing. However, further evaluation with a larger sample size and additional analysis of Qmax, post-void residual volume, and PSA would be helpful to better characterize the potential advantages. Although the published complication rate from non-target embolization is low, the risk exists and the inherent radiopacity may better evaluate and highlight this. The authors, however, described difficulty differentiating the radiopaque embolic from retained contrast. This review presents an interesting peek into possible improvements for PAE, however more extensive investigation is needed to further characterize the benefits of 70- 150-mm radiopaque spherical embolics.

Post Author
Maxwell Cretcher, D.O.
Integrated Interventional Radiology Resident, PGY-3
Department of Interventional Radiology
Dotter Interventional Institute, Oregon Health and Science University
@MCretcher

2 comments:

  1. Am Laura Mildred by name, i was diagnosed with Herpes 4 years ago i lived in pain with the knowledge that i wasn't going to ever be well again i contacted so many herbal doctors on this issue and wasted a large sum of money but my condition never got better i was determined to get my life back so one day i saw Mr. Morrison Hansen post on how Dr. Emu saved him from Herpes with herbal medicine i contacted Dr. Emu on his Email: Emutemple@gmail.com we spoke on the issue i told him all that i went through and he told me not to worry that everything will be fine again so he prepared the medicine and send it to me and told me how to use it, after 14 days of usage I went to see the doctor for test,then the result was negative, am the happiest woman on earth now thanks to Dr. Emu God bless you. Email him at: Emutemple@gmail.com Whats-app or Call him +2347012841542 

    ReplyDelete
  2. I want to thank Dr Emu a very powerful spell caster who help me to bring my husband back to me, few month ago i have a serious problem with my husband, to the extend that he left the house, and he started dating another woman and he stayed with the woman, i tried all i can to bring him back, but all my effort was useless until the day my friend came to my house and i told her every thing that had happened between me and my husband, then she told me of a powerful spell caster who help her when she was in the same problem I then contact Dr Emu and told him every thing and he told me not to worry my self again that my husband will come back to me after he has cast a spell on him, i thought it was a joke, after he had finish casting the spell, he told me that he had just finish casting the spell, to my greatest surprise within 48 hours, my husband really came back begging me to forgive him, if you need his help you can contact him with via email: Emutemple@gmail.com or add him up on his whatsapp +2347012841542 is willing to help any body that need his help. 

    ReplyDelete