Thermal-based treatment options for localized prostate cancer

Psychological nursing intervention on anxiety and depression in patients with urinary incontinence after radical prostatectomy: A randomized controlled study protocol

BACKGROUND

Prostate cancer (PC) is one of the most familiar disease of the male reproductive system globally. In treating the clinically localized PC, the radical prostatectomy is regarded as a gold standard, but it is associated with syndromes as urinary incontinence (UI), which can have a significant impact on patients' quality of life. Nurse takes responsibility in the management of the UI for their convenience compared with doctors to contact with patients and build better trust relationships with survivals. However, most of the studies focus on the physiological level, the psychological nursing intervention research is less. The purpose of the trial is to introduce a psychological intervention program and to study its effects on anxiety and depression after prostatectomy in IU patients.

METHODS

This is a single-center randomized controlled trial that was authorized by Ethics Committee of the First People's Hospital of Chenzhou City (2020054). One hundred participants who undergo radical prostatectomy are analyzed. Inclusion criteria are the following: PC is diagnosed based on histological results; Participants in the study voluntarily sign the informed consent table; Severe UI after extubation; Patients with postoperative UI do not receive any drug treatment. Exclusion criteria are the followings: patients with the history of prostate operation; patients with the history of severe renal and liver malignancy; UI caused by reasons other than prostatectomy. The main outcomes are the degree of anxiety and depression 2 months after urinary catheter is removed. The secondary outcomes are the quality of life 2 months after urinary catheter is removed. All data are collected and analyzed by the Social Science software version 21.0 (SPSS, Inc., Chicago, IL) program.

RESULTS

The relevant indexes of severe UI patients are compared in the table.

CONCLUSION

Psychological nursing intervention may have a positive effect on depression and anxiety in the UI patients after receiving the radical prostatectomy.

A randomized trial of external beam radiotherapy versus cryoablation in patients with localized prostate cancer: quality of life outcomes

BACKGROUND

A recent randomized trial to compare external beam radiation therapy (EBRT) to cryoablation for localized disease showed cryoablation to be noninferior to external beam EBRT in disease progression and overall and disease-specific survival. We report on the quality of life (QOL) outcomes for this trial.

METHODS

From December 1997 through February 2003, 244 men with newly diagnosed localized prostate cancer were randomly assigned to cryoablation or EBRT (median dose 68 Gy). All patients received neoadjuvant antiandrogen therapy. Patients completed the EORTC QLQ C30 and the Prostate Cancer Index (PCI) before treatment and at 1.5, 3, 6, 12, 18, 24, and 36 months post-treatment.

RESULTS

Regardless of treatment arm, participants reported high levels of QOL with few exceptions. cryoablation was associated with more acute urinary dysfunction (mean PCI urinary function cryoablation=69.4; mean EBRT=90.7; P<.001), which resolved over time. No late arising QOL issues were observed. Both EBRT and cryoablation participants reported decreases in sexual function at 3 months with the cryoablation patients reporting poorer functioning (mean cryoablation=7.2: mean EBRT=32.9; P<.001). Mean sexual function score was 15 points lower at 3 years for the cryoablation group and 13% more of the cryoablation men said that sexuality was a moderate or big problem.

CONCLUSIONS

In this randomized trial, no long-term QOL advantage for either treatment was apparent with the exception of poorer sexual function reported by those treated with cryoablation. Men who wish to increase their odds of retaining sexual function might be counseled to choose EBRT over cryoablation.

Prostate Tissue Analysis Immediately Following Magnetic Resonance Imaging Guided Transurethral Ultrasound Thermal Therapy

PURPOSE

Preclinical experiments were performed in an acute canine model to analyze the spatial pattern of thermal damage generated in the prostate gland following treatment with a prototype magnetic resonance imaging guided transurethral ultrasound heating system. In particular the boundary of tissue coagulation was analyzed to quantify the treatment margin resulting from this technology.

MATERIALS AND METHODS

A heating device incorporating a planar 20 x 3.5 mm transducer operated at 9.1 MHz was used to deliver ultrasound energy to targeted regions in the prostate gland in 7 animals monitored with magnetic resonance imaging thermometry during heating. The animals were sacrificed approximately 45 minutes after treatment. The thermal damage pattern was evaluated using contrast enhanced magnetic resonance imaging, vital tissue staining, and whole mount hematoxylin and eosin stained histological sections. An image warping technique enabled quantitative comparison of these data.

RESULTS

Regions of thermal fixation, coagulative necrosis and hemorrhage were observed in the treated prostate glands. The extent of the necrotic region was relatively insensitive to vessel cooling effects. Metabolic enzyme functionality coincided with tissue outside of the treatment area. At the edge of the thermal damage pattern the transition from coagulative necrosis to no visible damage occurred within 3 mm or less.

CONCLUSIONS

The narrow extent of the thermal margin suggests that tissue sparing outside of the prostate could be an advantage of this treatment. Histological measurements showed a high level of spatial accuracy, useful for developing accurate control techniques for directional transurethral ultrasound thermal therapy in the treatment of prostate diseases.