Prevention of Postoperative Urinary Retention With Treatment of Tamsulosin 5 Days Prior to Lower Limb Arthroplasty

NCT ID: NCT03808155

Last Updated: 2025-09-03

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE4
• Total Enrollment: 170 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2019-08-01
• Study Completion Date: 2025-03-04

Brief Summary

Various studies have shown that the risk of suffering a urinary retention after knee or hip prosthesis surgery is 10-80%. The aim of the study is to reduce this riks. For this purpose, it is investigated whether a previously known drug (tamsulosin) which is used in bladder emptying disorders, can achieve a reduction in urinary retention after surgery. After the patients agree to participate in the study, they are examined in our urological clinic. Uroflowmetry is performed with sonographic residual volume measurement and prostate volume measurement. Furthermore, a standardized Voiding questionaire (IPSS) is completed. This study is conducted as a double-blind study using a placebo control group. The drug / placebo is taken once a day, five days before and two days after surgery. Subsequently, it is observed whether it comes to a urinary retention or not. After the operation, no further urological checks are planned or needed.

Detailed Description

Study Category and rationale:

This study uses a well-known drug (tamsulosin) which is authorised in Switzerland and widely used to treat obstructive voiding problems. In our case the indication is different from that specified in the prescribing information, but it is within the same disease group, which in our case is to prevent urinary retention. Therefore according to the legal ordinance on clinical trials (ClinO), this study is classified as a clinical trial, research with collection of health-related personal data and placebo controlled of the category B.

Objective:

Our goal is to reduce the rate of postoperative urinary retention after lower limb arthroplasty. For this purpose, we plan to investigate whether an already known drug (Tamsulosin), which is widely used for bladder emptying disorders, could reduce the rate of postoperative urinary retention.

Outcomes:

The primary outcome is the occurrence of urinary retention during the 48 postoperative hours. The secondary outcome is the influence of other clinical factors on the occurrence of urinary retention as type of anaesthesia, preoperative residual volume, prostate size and international prostate symptom score (IPSS).

Measurement and procedures:

Once the decision for lower limb arthroplasty is made during the planned orthopaedic consultation, the patient will receive a participant information sheet and the informed consent. If the patient is interested to take part in the study he will receive an appointment in the urological clinic at least six days before the operation. During the appointment a urological specialist will explain the entire study. A uroflowmetry with sonographic measurement of residual volume and prostate volume will be performed. Furthermore, the patient will fill out an IPSS-questionnaire. After the appointment the drug/placebo will be handed out to the patient, which should be taken once a day five days prior to the operation, on the day of surgery and two days thereafter.

Study product:

The study specific product Tamsulosin 0.4mg, a tablet which is taken once a day per os five days prior to the operation and two days after the operation.

Control intervention:

Placebo.

Number of participants with rationale:

The number of participants projected for the entire study is 170. Thus 85 patients in the drug-treatment group and 85 patients for the placebo-treatment group.

Conditions

Urinary Retention Postoperative; Arthropathy of Knee; Arthropathy of Hip

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: QUADRUPLE

Study Groups

Tamsulosin

The study specific product Tamsulosin 0.4mg, a tablet which is taken once a day per os five days prior to the operation and two days after the operation.

Group Type: ACTIVE_COMPARATOR

Tamsulosin

Intervention Type: DRUG

The drug ist taken once a day per os five days prior to the operation and two days after the operation.

Placebo Oral Tablet

The placebo is taken once a day per os five days prior to the operation and two days after the operation.

Group Type: PLACEBO_COMPARATOR

Placebo Oral Tablet

Intervention Type: DRUG

The placebo ist taken once a day per os five days prior to the operation and two days after the operation.

Interventions

Tamsulosin

The drug ist taken once a day per os five days prior to the operation and two days after the operation.

Intervention Type: DRUG

Placebo Oral Tablet

The placebo ist taken once a day per os five days prior to the operation and two days after the operation.

Intervention Type: DRUG

Other Intervention Names

Pradif

Eligibility Criteria

Inclusion Criteria

• male adults undergoing elective hip- or knee arthroplasty

Exclusion Criteria

• women
• underage patients
• pre-existing treatment with tamsulosin or other prostate affecting medication
• patients who underwent transurethral resection of the prostate or prostatectomy
• patients with urethral strictures
• patients with neurological bladder dysfunction
• Known allergy to tamsulosin
• Hypotensive disorder

• Minimum Eligible Age: 18 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: Yes

Sponsors

Kantonsspital Graubünden

OTHER

Sponsor Role: lead

Responsible Party

PD Dr. med. Räto T. Strebel

Head of Urology

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Räto T. Strebel, PD Dr. med.

Role: PRINCIPAL_INVESTIGATOR

Kantonsspital Graubünden

Locations

Kantonsspital Graubünden

Chur, Kanton Graubünden, Switzerland

Countries

Switzerland

Other Identifiers

GR20192021

Identifier Type: -

Identifier Source: org_study_id