CClinicalTrials.gg
CompletedNCT01697748Updated Nov 14, 2019Results posted

Prospective Study on Cesarean Wound Outcomes

An interventional study of Silver-impregnated dressing and Telfa pad dressing in Surgical Site Infection, Cosmetic Appearance of Cesarean Scar and Post Operative Pain, sponsored by University of South Florida. Completed at 3 sites in United States. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-11-14.

Sponsored by University of South Florida · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
660
Allocation
Randomized
Ages
18 Years and older
Sex
Female
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Study summary

This study will investigate whether the placement of silver impregnated dressings beginning in the OR will improve wound healing in patients undergoing cesarean delivery compared to traditional Telfa pads. This study will also explore the presumed improvement in scar integrity when silver impregnated dressings are used compared to the Telfa pads.

The study will compare the percentage of patients who develop a surgical site infection after application of silver impregnated dressings versus standard Telfa dressings. Investigators will also assess the cosmetic appearance and pain of the cesarean section scar at the patient's one week and 6 week post-operative visits.

Read the detailed description

This is a randomized, prospective study involving 660 patients undergoing cesarean sections at Tampa General Hospital. The control group (n=330) will receive standard Telfa pad dressing and the treatment group (n=330) will receive the silver impregnated dressing.

The primary objective is to compare the percentage of patients who develop a surgical site infection between the two groups at the 1-week and 6-weeks post operative visits. The secondary objective is to assess the cosmetic outcome of the cesarean incision observed at the 1-week and 6-week post-operative visits. A plastic surgery investigator will also conduct a blinded assessment of cosmetic outcome by review of photographs taken of the wounds at 1-week and 6-weeks.The tertiary objective is to evaluate the amount of narcotic and non narcotic medicine consumed during the hospitalization and query the patient with regards to pain involving the cesarean wound at 1 and 6 week post-operative visits

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Conditions studied

  • Surgical Site Infection
  • Cosmetic Appearance of Cesarean Scar
  • Post Operative Pain

Keywords

  • cesarean section incisions
  • silver
  • c-section
  • wound infection
  • scar appearance
  • post operative pain
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In context

Infections

6,687 studies on the registry are indexed under Infections; 807 are open to participants now.

This study's enrollment of 660 is above the median of 120 across 4,200 interventional studies indexed under Infections.

Browse Infections studies →

Lead sponsor

University of South Florida is the lead sponsor of 333 studies on the registry; 63 are open to participants now.

Of its 17 completed or terminated interventional studies of FDA-regulated products, 4 (24%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  • Age 18 or older
  • Elective and emergent cesarean deliveries
  • Primary and repeat cesarean sections
  • Transverse skin incisions (Pfannenstiel)
  • Low transverse uterine incisions
  • Patients with or without the diagnosis of chorioamnionitis with antibiotic treatment prior to or after the delivery of the baby
  • Single and multiple gestations
  • Able and willing to provide written informed consent

Exclusion criteria

Exclusion Criteria:

  • Patients that did not receive routine prophylactic dose of antibiotics in the operating room.
  • Skin incisions other than Pfannenstiel
  • Uterine incisions other than low transverse
  • Patients with known or discovered allergy to silver or nylon
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Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
660 participants (actual)

Study arms

  • Placebo comparator
    Telfa pad dressing

    Telfa pad dressing placed over Cesarean wound after skin closure; the dressing will be changed to a new Telfa pad dressing on post-operative day 2 which will remain on the incision through post-operative day 7.

    Device: Telfa pad dressing

  • Active comparator
    Silver-impregnated dressing

    Silver-impregnated dressing placed over Cesarean wound after skin closure; the dressing will be changed to saline-treated dressing on post-operative day 2 which will remain on the incision through post-operative day 7.

    Device: Silver-impregnated dressing

Interventions

  • DeviceSilver-impregnated dressing

    Silver-impregnated dressing placed over Cesarean wound after skin closure; the dressing will be changed to saline-treated dressing on post-operative day 2 which will remain on the incision through post-operative day 7.

    Also known as: Silverlon

  • DeviceTelfa pad dressing

    Telfa pad dressing placed over Cesarean wound after skin closure; the dressing will be changed to a new Telfa pad dressing on post-operative day 2 which will remain on the incision through post-operative day 7.

    Also known as: Telfa pad

06

What researchers measure

Primary outcomes

  1. Percentage of Patients Who Develop a Surgical Site Infection

    A surgical site infection involving the skin and subcutaneous tissue is defined as either * The presence of a purulent discharge from the wound on inspection, or * Purulent discharge obtained from the wound after exploration based on the suspicion of the provider (erythema, swelling, heat or pain), or * The presence of a seroma or hematoma discharge from the wound on inspection or after exploration that also involves isolation of an organism from an aseptically obtained culture based on suspicion of the provider (erythema, swelling, heat or pain). Seromas or hematomas with negative cultures will not be considered a surgical site infection.

    Time frame: from post operative day #1 through post operative day 30

Secondary outcomes

  1. Cosmetic Outcome of the Cesarean Section Incision

    The following instruments will be used to determine the cosmetic outcome: • The Modified Vancouver scar scale Range of scale values are from 0-12 (0 indicating a better outcome)

    Time frame: Post operative day 7

  2. Cosmetic Outcome of the Cesarean Section Incision

    The following instruments will be used to determine the cosmetic outcome • The Modified Observer Scar Assessment Scale Range of scale values is from 5 - 50 ( the lower the score the better the outcome)

    Time frame: Six weeks post-operative

Other outcomes

  1. Reduction of Pain After Cesarean Delivery

    The amount of narcotics measured in Morphine equivalent milligrams and non opioids administered during the cesarean delivery hospitalization were recorded

    Time frame: Immediately post operatively to hospital discharge

  2. The Number of Participants Noting Pain at the One Week Post Cesarean Visit

    Pain response to notable pain at wound site during 7 day post operative visit Subjective self reporting pain as yes or no.

    Time frame: Post operative day 7

  3. The Number of Participants Noting Pain at the Six Weeks Post Cesarean Visit

    Pain response to notable pain at wound site during 6 week post operative visit Subjective self reporting of pain as yes or no.

    Time frame: 6 weeks post operative

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Results

Posted Sep 26, 2018

Participant flow

Recruitment was from September 2013 through June 2016. The 6 week post operative visits were completed August 2016. Recruitment was at University of South Florida South Tampa Campus, Tampa General Hospital Healthpark Genesis and Tampa General Hospital Tampa Florida Labor and Delivery Triage.

Participant flow — Overall Study
MilestoneTelfa Pad DressingSilver-impregnated Dressing
Started329328
Completed271260
Not completed5868
Withdrew: Ineligible skin incision12
Withdrew: Ineligible uterine incision41
Withdrew: Lost to follow-up5365

Outcome measures

PrimaryPercentage of Patients Who Develop a Surgical Site Infection

A surgical site infection involving the skin and subcutaneous tissue is defined as either * The presence of a purulent discharge from the wound on inspection, or * Purulent discharge obtained from the wound after exploration based on the suspicion of the provider (erythema, swelling, heat or pain), or * The presence of a seroma or hematoma discharge from the wound on inspection or after exploration that also involves isolation of an organism from an aseptically obtained culture based on suspicion of the provider (erythema, swelling, heat or pain). Seromas or hematomas with negative cultures will not be considered a surgical site infection.

Time frame:
from post operative day #1 through post operative day 30
Reported as:
Count of participants · Participants
Percentage of Patients Who Develop a Surgical Site Infection
ParticipantsTelfa Pad DressingSilver-impregnated Dressing
Percentage of Patients Who Develop a Surgical Site Infection1415
Statistical analysis
  • Telfa Pad Dressing vs Silver-impregnated Dressing · Odds ratio (or): 0.96 · 95% CI 0.44 to 1.96No P values were reported for the association between dressing type and infection, only relative risk and 95% confidence intervals were reported.
  • Telfa Pad Dressing vs Silver-impregnated Dressing · Mixed Models Analysis · p = <0.05 (Variables with at least a borderline association (P≤.10) were then included in a multiple logistic regression model to verify which is independently associated with the outcome of interest)In addition to the Chi-Square, Fisher's exact test, Student T-Test, Mann Whitney U test and logistic regression were utilized when appropriate.
SecondaryCosmetic Outcome of the Cesarean Section Incision

The following instruments will be used to determine the cosmetic outcome: • The Modified Vancouver scar scale Range of scale values are from 0-12 (0 indicating a better outcome)

Time frame:
Post operative day 7
Reported as:
Mean · score on a scale
Cosmetic Outcome of the Cesarean Section Incision
score on a scaleTelfa Pad DressingSilver-impregnated Dressing
Cosmetic Outcome of the Cesarean Section Incision3.8 ± 1.83.7 ± 1.8
Statistical analysis
  • Telfa Pad Dressing vs Silver-impregnated Dressing · see below · p = <.05Chi square, Fisher Exact, Student t-test, Wilcoxon-Mann-Whitney test where appropriate
SecondaryCosmetic Outcome of the Cesarean Section Incision

The following instruments will be used to determine the cosmetic outcome • The Modified Observer Scar Assessment Scale Range of scale values is from 5 - 50 ( the lower the score the better the outcome)

Time frame:
Six weeks post-operative
Reported as:
Mean · score on a scale
Cosmetic Outcome of the Cesarean Section Incision
score on a scaleTelfa Pad DressingSilver-impregnated Dressing
Cosmetic Outcome of the Cesarean Section Incision11.4 ± 6.511.6 ± 6.5
Statistical analysis
  • Telfa Pad Dressing vs Silver-impregnated Dressing · Mixed Models Analysis · p = <.05Chi Square, Fisher's Exact, Student's T test, Wilcoxon-Mann-Whitney test and logistic regression when appropriate,
  • Telfa Pad Dressing vs Silver-impregnated Dressing · Mixed Models Analysis · p = <.05Chi Square, Fisher Exact, Student t-test, Wilcoxon-Mann-Whitney test
Other pre-specifiedReduction of Pain After Cesarean Delivery

The amount of narcotics measured in Morphine equivalent milligrams and non opioids administered during the cesarean delivery hospitalization were recorded

Time frame:
Immediately post operatively to hospital discharge
Reported as:
Median · Morphine milligram equivalent
Reduction of Pain After Cesarean Delivery
Morphine milligram equivalentTelfa Pad DressingSilver-impregnated Dressing
Reduction of Pain After Cesarean Delivery90.0 (60 to 135)82.5 (52.5 to 120)
Other pre-specifiedThe Number of Participants Noting Pain at the One Week Post Cesarean Visit

Pain response to notable pain at wound site during 7 day post operative visit Subjective self reporting pain as yes or no.

Time frame:
Post operative day 7
Reported as:
Count of participants · Participants
The Number of Participants Noting Pain at the One Week Post Cesarean Visit
ParticipantsTelfa Pad DressingSilver-impregnated Dressing
The Number of Participants Noting Pain at the One Week Post Cesarean Visit2321
Statistical analysis
  • Telfa Pad Dressing vs Silver-impregnated Dressing · Mixed Models Analysis · p = <0.05
Other pre-specifiedThe Number of Participants Noting Pain at the Six Weeks Post Cesarean Visit

Pain response to notable pain at wound site during 6 week post operative visit Subjective self reporting of pain as yes or no.

Time frame:
6 weeks post operative
Reported as:
Count of participants · Participants
The Number of Participants Noting Pain at the Six Weeks Post Cesarean Visit
ParticipantsTelfa Pad DressingSilver-impregnated Dressing
The Number of Participants Noting Pain at the Six Weeks Post Cesarean Visit58
Statistical analysis
  • Telfa Pad Dressing vs Silver-impregnated Dressing · Mixed Models Analysis · p = <0.05

Adverse events

Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Telfa Pad Dressing0/329 (0%)1/329 (0.3%)3/329 (0.9%)
Silver-impregnated Dressing0/328 (0%)2/328 (0.6%)2/328 (0.6%)
Most frequent serious events
Most frequent serious events
EventTelfa Pad DressingSilver-impregnated Dressing
Readmission to hospitalSkin and subcutaneous tissue disorders1/3292/328
Most frequent other events
Most frequent other events
EventTelfa Pad DressingSilver-impregnated Dressing
Skin reaction to adhesiveSkin and subcutaneous tissue disorders3/3292/328

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Telfa Pad DressingSilver-impregnated DressingTotal
<=18 years000
Between 18 and 65 years329328657
>=65 years000
Age, Continuous
Age, Continuous(years)Telfa Pad DressingSilver-impregnated DressingTotal
Mean31.0 ± 5.530.9 ± 5.631.0 ± 5.6
Sex: Female, Male
Sex: Female, Male(Participants)Telfa Pad DressingSilver-impregnated DressingTotal
Female329328657
Male000
Region of Enrollment
Region of Enrollment(participants)Telfa Pad DressingSilver-impregnated DressingTotal
United States329328657
08

Study locations

3 sites
  • USF Health South Tampa Center for Advanced Healthcare
    Tampa, Florida 33606, United States
  • Women's Center Operating Rooms at the Tampa General Hospital
    Tampa, Florida 33606, United States
  • USF Health Morsani Center for Advanced Healthcare
    Tampa, Florida 33612, United States
09

References and documents

Publications

  • Opoien HK, Valbo A, Grinde-Andersen A, Walberg M. Post-cesarean surgical site infections according to CDC standards: rates and risk factors. A prospective cohort study. Acta Obstet Gynecol Scand. 2007;86(9):1097-102. doi: 10.1080/00016340701515225. PubMed 17712651 ↗
  • Owens SM, Brozanski BS, Meyn LA, Wiesenfeld HC. Antimicrobial prophylaxis for cesarean delivery before skin incision. Obstet Gynecol. 2009 Sep;114(3):573-579. doi: 10.1097/AOG.0b013e3181b490f1. PubMed 19701037 ↗
  • Olsen MA, Butler AM, Willers DM, Devkota P, Gross GA, Fraser VJ. Risk factors for surgical site infection after low transverse cesarean section. Infect Control Hosp Epidemiol. 2008 Jun;29(6):477-84; discussion 485-6. doi: 10.1086/587810. PubMed 18510455 ↗
  • Epstein NE. Do silver-impregnated dressings limit infections after lumbar laminectomy with instrumented fusion? Surg Neurol. 2007 Nov;68(5):483-5; discussion 485. doi: 10.1016/j.surneu.2007.05.045. PubMed 17961738 ↗
  • Perkins James, Pattillo Rolandid. How to Avert Postoperative Wound Complications-Treat It when It Occurs. OBG Management 2009;21(10):43-53.
  • Huckfeldt R, Redmond C, Mikkelson D, Finley PJ, Lowe C, Robertson J. A clinical trial to investigate the effect of silver nylon dressings on mediastinitis rates in postoperative cardiac sternotomy incisions. Ostomy Wound Manage. 2008 Oct;54(10):36-41. PubMed 18927482 ↗
  • Leaper DJ. Silver dressings: their role in wound management. Int Wound J. 2006 Dec;3(4):282-94. doi: 10.1111/j.1742-481X.2006.00265.x. PubMed 17199764 ↗
  • Mustoe TA, Cooter RD, Gold MH, Hobbs FD, Ramelet AA, Shakespeare PG, Stella M, Teot L, Wood FM, Ziegler UE; International Advisory Panel on Scar Management. International clinical recommendations on scar management. Plast Reconstr Surg. 2002 Aug;110(2):560-71. doi: 10.1097/00006534-200208000-00031. PubMed 12142678 ↗
  • Cromi A, Ghezzi F, Gottardi A, Cherubino M, Uccella S, Valdatta L. Cosmetic outcomes of various skin closure methods following cesarean delivery: a randomized trial. Am J Obstet Gynecol. 2010 Jul;203(1):36.e1-8. doi: 10.1016/j.ajog.2010.02.001. Epub 2010 Apr 24. PubMed 20417924 ↗
  • Draaijers LJ, Tempelman FR, Botman YA, Tuinebreijer WE, Middelkoop E, Kreis RW, van Zuijlen PP. The patient and observer scar assessment scale: a reliable and feasible tool for scar evaluation. Plast Reconstr Surg. 2004 Jun;113(7):1960-5; discussion 1966-7. doi: 10.1097/01.prs.0000122207.28773.56. PubMed 15253184 ↗
  • Thomas Steve. MRSA and the Use of Silver Dressings: Overcoming Bacterial Resistance. http://www.worldwidewounds.com/2004/november/Thomas/Introducing-Silver Dressings.html.
  • Yiannias, James. Clinical features and diagnosis of allergic contact dermatitis. http://www.uptodate.com/contents/clinical-features-and-diagnosis-of-allergic-contact-dermatitis
  • Connery SA, Yankowitz J, Odibo L, Raitano O, Nikolic-Dorschel D, Louis JM. Effect of using silver nylon dressings to prevent superficial surgical site infection after cesarean delivery: a randomized clinical trial. Am J Obstet Gynecol. 2019 Jul;221(1):57.e1-57.e7. doi: 10.1016/j.ajog.2019.02.053. Epub 2019 Mar 5. PubMed 30849351 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 14, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT01697748
Lead sponsor
University of South Florida
Responsible party
Sponsor
First posted
Oct 2, 2012
Start date
Sep 2013
Primary completion
Aug 2016
Completion
May 2018
Results posted
Sep 26, 2018
Last update
Nov 14, 2019

Study contacts

Sheila Connery, MD
principal investigator · USF Health Morsani College of Medicine, Department of Obstetrics and Gynecology

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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