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Gomco Versus Mogen: Which is Best? A Randomized Controlled Trial (GMRT)

This study has been completed.
Information provided by (Responsible Party):
TriHealth Inc. Identifier:
First received: November 1, 2012
Last updated: November 11, 2014
Last verified: March 2014
The purpose of this study is to compare two commonly used circumcision clamps (Gomco and Mogen) to see which results in less neonatal pain.

Condition Intervention
Neonatal Circumcision Device: Gomco Circumcision Clamp Device: Mogen Circumcision Clamp

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Single (Outcomes Assessor)
Official Title: Gomco Versus Mogen: Which is Best? A Randomized Controlled Trial: The GMRT Study.

Further study details as provided by TriHealth Inc.:

Primary Outcome Measures:
  • Neonatal pain [ Time Frame: Approximately 2 hours before and 15 minutes after the procedure ]
    Neonatal pain will be assessed by change in salivary cortisol level pre and post procedure

Secondary Outcome Measures:
  • Bleeding [ Time Frame: Approximately 10 minutes after the procedure ]
    Bleeding is measured by weight of blood soaked gauzes after the procedure

  • Procedural Time [ Time Frame: Participants will be followed for the duration of procedure, average 4 minutes ]
    Time needed to complete the circumcision:start time from local anesthesia to end of circumcision.

  • Parental satisfaction [ Time Frame: Approximately 6 weeks after the procedure ]
    Approximately 6 weeks after the procedure parental satisfaction will be assessed by a phone survey.

  • Need for circumcision revision [ Time Frame: Approximately 6 weeks after the circumcision ]
    Approximately 6 weeks after the procedure the pediatrician's office will be contacted to see if a circumcision revision was needed.

  • Postoperative infection [ Time Frame: Approximately 6 weeks after circumcision ]
    Approximately 6 weeks after the circumcision the pediatrician's office will be contacted regarding surgical site infection.

Other Outcome Measures:
  • Neonatal pain score [ Time Frame: Assesed from time of recruitment to end of procedure, approximately 1 day. ]
    Standardized score including vital signs and facial expression

Enrollment: 274
Study Start Date: October 2012
Study Completion Date: September 2014
Primary Completion Date: March 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Gomco Circumcision Clamp
Gomco circumcision clamp used for neonatal circumcision.
Device: Gomco Circumcision Clamp
Active Comparator: Mogen Circumcision Clamp
Mogen circumcision clamp used for neonatal circumcision.
Device: Mogen Circumcision Clamp

Detailed Description:

Objective: To compare pain levels assessed by salivary cortisol and standardized neonatal pain scale among the two most common infant circumcision techniques in uncomplicated pregnancies after a thorough resident-wide education curriculum under attending physician supervision.

The secondary objectives are to assess the operative time, complication rates such as infection and bleeding and short term outcomes including need for re-circumcision among treatment groups.

Hypothesis: The Mogen technique of circumcision is less painful, faster, and associated with less bleeding for newborns when compared to the Gomco technique after a resident circumcision standard teaching curriculum.


Ages Eligible for Study:   up to 4 Days   (Child)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • term infants delivered by cesarean section or vaginal delivery at Good Samaritan Hospital during the time period of the study
  • Infants with no blood drawn two hours prior to the circumcision
  • Singletons

Exclusion Criteria:

  • Infants with congenital anomalies and/or known chromosomal syndromes
  • Preterm infants defined as less than 37 / 0 weeks gestation.
  • Delivery secondary to non-reassuring fetal heart tracing, defined by the delivering physician
  • Infants of diabetic mothers.
  • Infants of preeclamptic mothers on magnesium sulfate within 48 hours of delivery.
  • Infants delivered by vacuum-assisted or forceps-assisted vaginal delivery.
  • Infants of mothers who took steroids for fetal lung maturity within 7 days of delivery. (This may apply to term infants if the mother had no prenatal care and her gestational age was not known on arrival).
  • Infants with a 5 minutes apgar score of less than 7
  • Infants born to mothers with a history of drug abuse during pregnancy, currently on methadone, or with Hepatitis C or HIV.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01726036

United States, Ohio
TriHealth Good Samaritan Hospital
Cincinnati, Ohio, United States, 45220
Sponsors and Collaborators
TriHealth Inc.
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: TriHealth Inc. Identifier: NCT01726036     History of Changes
Other Study ID Numbers: H-11121
Study First Received: November 1, 2012
Last Updated: November 11, 2014

Keywords provided by TriHealth Inc.:
neonatal circumcision
neonatal surgical pain
Gomco processed this record on September 20, 2017