Treating the Resistant Patent Ductus Arteriosus (PDA)

The recruitment status of this study is unknown because the information has not been verified recently.
Verified January 2008 by Shaare Zedek Medical Center.
Recruitment status was  Not yet recruiting
Information provided by:
Shaare Zedek Medical Center Identifier:
First received: January 13, 2008
Last updated: February 14, 2008
Last verified: January 2008
Persistent postnatal ductal patency may have significant adverse hemodynamic effects, frequently necessitating therapeutic intervention in order to facilitate ductal closure. Medical therapy for patency of the ductus arteriosus is successful mediating ductal closure in approximately 70% of treated infants. In a recent study in our population, 17% of the babies showed no ductal response to the first course of treatment and 9.4% of our study infants eventually underwent surgical ligation of the ductus after failure of medical therapeutic closure.We propose to evaluate and compare two alternate therapeutic approaches to ductal closure in babies who do not respond to initial therapy.

Condition Intervention Phase
Patent Ductus Arteriosus
Drug: Indomethacin
Drug: Pentoxifylline
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: New Therapeutic Approaches to the Resistant Patent Ductus Arteriosus (PDA) in Low Birth Weight Neonates

Resource links provided by NLM:

Further study details as provided by Shaare Zedek Medical Center:

Primary Outcome Measures:
  • Our primary objective in this study is to improve ductal closure rates in those infants who do not respond to a first course of therapy. [ Time Frame: 2 years ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Our secondary objective is to compare the therapeutic efficacy of two very different secondary treatment protocols. [ Time Frame: 2 years ] [ Designated as safety issue: No ]
  • To monitor and compare potential side effects of the two treatment approaches [ Time Frame: 2 years ] [ Designated as safety issue: Yes ]

Estimated Enrollment: 68
Study Start Date: March 2008
Estimated Primary Completion Date: March 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Stepwise Indo
Stepwise escalating doses of indomethacin, until ductal closure or maximum of 1 mg/kg/dose.
Drug: Indomethacin
IV indomethacin starting at a dose of 0.4 mg/kg given over 30 minutes, increased daily by increments of 0.2 mg/kg/dose and given at intervals of 12 hours until a maximum dose of 1 mg/kg is reached, or until a total indomethacin dose of 6 mg/kg has been given. Daily echocardiography will be performed to monitor the progress of ductal closure. Once echocardiographic evidence of a closed ductus is achieved, two additional doses indomethacin will be given 24 hours and 48 hours later, using the same dose used in the last indomethacin infusion.
Experimental: PTX
Combined administration of indomethacin and pentoxifylline, an inhibitor of TNF alpha
Drug: Pentoxifylline
IV indomethacin will be re-started at a dose of 0.2 mg/kg to run over 30 minutes at 12 hour intervals to be given concurrently with pentoxifylline (5 mg/kg/hour to run over 6 hour once a day for a maximum of 6 days. Daily echocardiography will be performed to monitor the progress of ductal closure. Once echocardiographic evidence of a closed ductus is achieved, two additional doses indomethacin will be given 24 hours and 48 hours later and another day of pentoxifylline infusion, provided that the 6 day maximum has not yet been


Ages Eligible for Study:   up to 4 Weeks
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Inborn premature neonates admitted to the neonatal intensive care unit of the Shaare Zedek Medical Center and diagnosed as having a hemodynamically significant patent ductus arteriosus (sPDA) will be considered as potential candidates for study if/when they do not respond to initial therapy

Exclusion Criteria:

  • Any baby not considered viable
  • Any baby with IVH grade 3-4 of recent onset (within 3 days. [If no head ultrasound has been performed within the last 3-4 days, one should performed prior to onset of study.]
  • Any baby with dysmorphic features or congenital abnormalities
  • Any baby with structural heart disease other than PDA
  • Any baby with documented infection,
  • Any baby with thrombocytopenia (<50,000).
  Contacts and Locations
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Please refer to this study by its identifier: NCT00616382

Contact: Cathy Hammerman, MD 9722 6666238

Neonatal Intensive Care Unit - Shaare Zedek Medical Center Not yet recruiting
Jerusalem, Israel, 91031
Principal Investigator: Cathy Hammerman, MD         
Sub-Investigator: Irina Schorrs, MD         
Sub-Investigator: Amiram Nir, MD         
Sponsors and Collaborators
Shaare Zedek Medical Center
Principal Investigator: Cathy Hammerman, MD Shaare Zedek Medical Center
  More Information

Responsible Party: Cathy Hammerman, Shaare Zedek Medical Center Identifier: NCT00616382     History of Changes
Other Study ID Numbers: CHPDA2 
Study First Received: January 13, 2008
Last Updated: February 14, 2008
Health Authority: Israel: Ministry of Health

Keywords provided by Shaare Zedek Medical Center:
Patent Ductus Arteriosus [PDA] resistant to therapy

Additional relevant MeSH terms:
Ductus Arteriosus, Patent
Cardiovascular Abnormalities
Cardiovascular Diseases
Congenital Abnormalities
Heart Defects, Congenital
Heart Diseases
Analgesics, Non-Narcotic
Anti-Inflammatory Agents
Anti-Inflammatory Agents, Non-Steroidal
Antirheumatic Agents
Cardiovascular Agents
Central Nervous System Agents
Cyclooxygenase Inhibitors
Enzyme Inhibitors
Free Radical Scavengers
Gout Suppressants
Hematologic Agents
Molecular Mechanisms of Pharmacological Action
Peripheral Nervous System Agents
Pharmacologic Actions
Phosphodiesterase Inhibitors
Physiological Effects of Drugs
Platelet Aggregation Inhibitors
Protective Agents
Radiation-Protective Agents
Reproductive Control Agents processed this record on April 27, 2016