Surgical Technique
Conditions
Keywords
Gomco clamp instrument, Tissue adhesive, Open surgical circumcision, Minimally-invasive circumcision
Brief summary
This proposed randomized controlled trial will provide important data which will inform and enable the Mozambican government and global health programs to more effectively scale-up circumcision services. The investigators postulate that voluntary medical male circumcision using the Gomco clamp coupled with tissue adhesive meets WHO criteria for the ideal method: it is much easier to learn, faster, safer for both surgeons and patients, heals sooner, and is more cost effective than any other currently available technique.
Detailed description
Voluntary medical male circumcision (VMMC) is a priority preventive intervention and Mozambique is a priority country for VMMC scale-up. PEPFAR recently estimated that one HIV infection would be prevented between now and 2025 for every seven circumcisions performed in Mozambique. Sofala Province, where the study will be conducted, has an HIV prevalence of 13% among men and 18% among women. Approximately 8% of men aged 15-49 in Sofala Province, where the study will take place, are currently circumcised. In spite of their widely acknowledged drawbacks, open surgical techniques are the only VMMC techniques the President's Emergency Plan for AIDS Relief (PEPFAR) program currently allows in Africa. According to the Framework for Clinical Evaluation of Devices for Adult Male Circumcision (WHO, 2011): WHO and other health authorities wish to identify one or more devices that (a) would make the VMMC safer, easier, and quicker; (b) would have more rapid healing than current methods and/or might entail less risk of HIV transmission in the post-operative period; (c) could be performed safely by health-care providers with a minimal level of training; and (d) would be cost-effective compared to standard surgical methods for male circumcision scale up. This proposed randomized controlled trial will provide important data which will inform and enable the Mozambican government and PEPFAR to more effectively scale-up circumcision services. The investigators postulate that VMMC using the Gomco clamp coupled with tissue adhesive meets WHO criteria for the ideal method: it is much easier to learn, faster, safer for both surgeons and patients, heals sooner, and is more cost effective than any other currently available technique. The investigators propose a randomized controlled trial (RCT) comparing this minimally-invasive circumcision technique to the open surgical technique: * Gomco clamp with tissue adhesive: 100 men * Open surgical circumcision: 100 men The Gomco clamp is an FDA-approved device widely used in the US, but there are few data on its use in Africa. Tissue adhesive is widely used in multiple areas of medicine; specifically, multiple observational studies and RCTs have shown cyanoacrylate tissue adhesives to be superior to suture closure in circumcision in boys. The investigators refer to Gomco clamp circumcision coupled with tissue adhesive as a 'new' technique because these two independently-validated components have only been coupled in observational studies among men, and in randomized controlled trials among pre-pubertal boys, but never before in an RCT among adult men. The open surgical method is PEPFAR-approved and will serve as the control intervention. Population: Men \> 18 years of age who desire male circumcision Sample size: 200 (100 men in each group) Study design: Randomized controlled trial Intervention: Gomco clamp circumcision plus tissue adhesive vs. open surgical circumcision Follow-up visits: 2 days, 7 days, 14 days and 28 days. Optional 42 day follow-up if not completely healed by 4 weeks.
Interventions
According to WHO (2011), the Gomco clamp has …an impeccable safety record. In the USA, where it is estimated that well over 1 million neonates are circumcised each year, the Gomco clamp has become the leading instrument used to perform non-ritual male circumcision. Tissue adhesive is widely used in multiple areas of medicine; specifically, multiple observational studies and RCTs have shown cyanoacrylate tissue adhesives to be superior to suture closure in VMMC.
The World Health Organization, in its Manual for Male Circumcision under Local Anaesthesia, describes three open surgical techniques (forceps assisted, dorsal slit and sleeve technique), all three of which involve (a) exposure of subcutaneous tissues and (b) suturing for hemostasis and for skin closure.
Sponsors
Study design
Eligibility
Inclusion criteria
* Healthy men \> 18 years of age requesting circumcision * No penile anatomical abnormalities or infections * Able to provide informed consent to participate * Willing to participate in follow-up visits
Exclusion criteria
* Current illness * Penile abnormality or infection which contraindicates or would complicate circumcision * History of bleeding disorder * Past reaction to local anesthetic
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Intraoperative Duration | 1 year | Time it takes for procedure from first manipulation of tissue under local anesthesia to dressing. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Difficulty in Learning and Performing Technique | 1 year | Evaluated by doctor survey, 5 point Likert scale: 1. Gomco technique is much easier 2. Gomco technique is easier 3. Neutral 4. Open surgical technique is easier 5. Open surgical technique is much easier |
| Time Required for Healing | Within 6 weeks after surgery | Time required for healing |
| Direct Costs | Within 6 weeks after surgery | the cost of labor, supplies and equipment |
| Pain Experienced | 2 days after surgery | Pain experienced during and after the procedure using Pain Questionnaire with 10 point pain scale (0 signifies no pain and 10 signifies maximal pain) |
| Overall Patient Satisfaction | Within 6 weeks after surgery | Patient satisfaction evaluated with patient satisfaction questionnaire using five point Likert scale. |
| Cosmetic Result | Within 6 weeks after surgery | Cosmetic result evaluated by classification of scar line as regular (straight without any irregularity), irregular (not completely straight), or scalloped (with a wavy appearance). |
Other
| Measure | Time frame | Description |
|---|---|---|
| Adverse Events | 1 yr | Intraoperative and post-operative adverse events, such as bleeding, hematoma, and infection |
Countries
Mozambique
Participant flow
Recruitment details
Recruitment between October 30, 2012 and February 2, 2013. University teaching clinic.
Pre-assignment details
241 interviewed, Excluded (n=41) * Inclusion criteria not met (n=19) * Under 18 years of age (n=17) * Phimosis (n=2) * Declined to participate (n=22) 200 were randomized and underwent circumcision in the arm allocated
Participants by arm
| Arm | Count |
|---|---|
| Open Surgical Circumcision Open surgical techniques, which are commonly used for circumcision in Subsaharan Africa (and the only technique permitted by PEPFAR), require good surgical skills and minor complications are common. | 100 |
| Gomco Clamp With Tissue Adhesive Coupling removal of the foreskin with the Gomco clamp followed by wound sealing with tissue adhesive results in a procedure that can be performed by generalist doctors using the same technique in all age groups. | 100 |
| Total | 200 |
Baseline characteristics
| Characteristic | Gomco Clamp With Tissue Adhesive | Open Surgical Circumcision | Total |
|---|---|---|---|
| Age Continuous | 22.3 years STANDARD_DEVIATION 4.7 | 22.8 years STANDARD_DEVIATION 4.9 | 22.5 years STANDARD_DEVIATION 4.8 |
| Age, Customized 18-20 yrs | 49 participants | 43 participants | 92 participants |
| Age, Customized 21-24 yrs | 27 participants | 26 participants | 53 participants |
| Age, Customized >=25 yrs | 24 participants | 31 participants | 55 participants |
| Region of Enrollment Mozambique | 100 participants | 100 participants | 200 participants |
| Sex: Female, Male Female | 0 Participants | 0 Participants | 0 Participants |
| Sex: Female, Male Male | 100 Participants | 100 Participants | 200 Participants |
Adverse events
| Event type | EG000 affected / at risk | EG001 affected / at risk |
|---|---|---|
| deaths Total, all-cause mortality | — / — | — / — |
| other Total, other adverse events | 7 / 100 | 18 / 100 |
| serious Total, serious adverse events | 0 / 100 | 0 / 100 |
Outcome results
Intraoperative Duration
Time it takes for procedure from first manipulation of tissue under local anesthesia to dressing.
Time frame: 1 year
Population: All participants
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Open Surgical Circumcision | Intraoperative Duration | 22.5 Min | Standard Deviation 6.6 |
| Gomco Clamp With Tissue Adhesive | Intraoperative Duration | 12.8 Min | Standard Deviation 2.7 |
Cosmetic Result
Cosmetic result evaluated by classification of scar line as regular (straight without any irregularity), irregular (not completely straight), or scalloped (with a wavy appearance).
Time frame: Within 6 weeks after surgery
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Open Surgical Circumcision | Cosmetic Result | Irregular | 35 participants |
| Open Surgical Circumcision | Cosmetic Result | Regular | 54 participants |
| Open Surgical Circumcision | Cosmetic Result | Scalloped | 4 participants |
| Gomco Clamp With Tissue Adhesive | Cosmetic Result | Regular | 93 participants |
| Gomco Clamp With Tissue Adhesive | Cosmetic Result | Irregular | 1 participants |
| Gomco Clamp With Tissue Adhesive | Cosmetic Result | Scalloped | 0 participants |
Difficulty in Learning and Performing Technique
Evaluated by doctor survey, 5 point Likert scale: 1. Gomco technique is much easier 2. Gomco technique is easier 3. Neutral 4. Open surgical technique is easier 5. Open surgical technique is much easier
Time frame: 1 year
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Open Surgical Circumcision | Difficulty in Learning and Performing Technique | 2.5 units on Likert scale |
| Gomco Clamp With Tissue Adhesive | Difficulty in Learning and Performing Technique | 2 units on Likert scale |
Direct Costs
the cost of labor, supplies and equipment
Time frame: Within 6 weeks after surgery
Overall Patient Satisfaction
Patient satisfaction evaluated with patient satisfaction questionnaire using five point Likert scale.
Time frame: Within 6 weeks after surgery
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Open Surgical Circumcision | Overall Patient Satisfaction | Very satisfied | 70 participants |
| Open Surgical Circumcision | Overall Patient Satisfaction | Satisfied | 29 participants |
| Open Surgical Circumcision | Overall Patient Satisfaction | Not satisfied | 0 participants |
| Gomco Clamp With Tissue Adhesive | Overall Patient Satisfaction | Very satisfied | 56 participants |
| Gomco Clamp With Tissue Adhesive | Overall Patient Satisfaction | Satisfied | 39 participants |
| Gomco Clamp With Tissue Adhesive | Overall Patient Satisfaction | Not satisfied | 0 participants |
Pain Experienced
Pain experienced during and after the procedure using Pain Questionnaire with 10 point pain scale (0 signifies no pain and 10 signifies maximal pain)
Time frame: 2 days after surgery
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Open Surgical Circumcision | Pain Experienced | 2.5 units on 10 point pain scale | Standard Deviation 1.9 |
| Gomco Clamp With Tissue Adhesive | Pain Experienced | 1.8 units on 10 point pain scale | Standard Deviation 1.6 |
Time Required for Healing
Time required for healing
Time frame: Within 6 weeks after surgery
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Open Surgical Circumcision | Time Required for Healing | Healed at 2 weeks | 2.1 percentage of participants |
| Open Surgical Circumcision | Time Required for Healing | Healed at 4 weeks | 87.8 percentage of participants |
| Open Surgical Circumcision | Time Required for Healing | Healed at 6 weeks | 98.9 percentage of participants |
| Gomco Clamp With Tissue Adhesive | Time Required for Healing | Healed at 2 weeks | 9.4 percentage of participants |
| Gomco Clamp With Tissue Adhesive | Time Required for Healing | Healed at 4 weeks | 87.4 percentage of participants |
| Gomco Clamp With Tissue Adhesive | Time Required for Healing | Healed at 6 weeks | 100 percentage of participants |
Adverse Events
Intraoperative and post-operative adverse events, such as bleeding, hematoma, and infection
Time frame: 1 yr
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Open Surgical Circumcision | Adverse Events | Mild bleeding | 0 participants |
| Open Surgical Circumcision | Adverse Events | Moderate bleeding (suturing required) | 1 participants |
| Open Surgical Circumcision | Adverse Events | Hematoma | 3 participants |
| Open Surgical Circumcision | Adverse Events | Infection (antibiotic required) | 3 participants |
| Gomco Clamp With Tissue Adhesive | Adverse Events | Infection (antibiotic required) | 7 participants |
| Gomco Clamp With Tissue Adhesive | Adverse Events | Mild bleeding | 4 participants |
| Gomco Clamp With Tissue Adhesive | Adverse Events | Hematoma | 1 participants |
| Gomco Clamp With Tissue Adhesive | Adverse Events | Moderate bleeding (suturing required) | 6 participants |