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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03894904
Other study ID # HSC-MS-19-0059
Secondary ID
Status Completed
Phase Phase 4
First received
Last updated
Start date April 1, 2019
Est. completion date October 10, 2020

Study information

Verified date October 2022
Source The University of Texas Health Science Center, Houston
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The purpose of this study is to compare intraoperative papaverine plus heparin to heparin alone for prevention of arterial spasm and maintenance of patency of peripheral arterial catheters during surgery in pediatric patients. The hypothesis is that periodic, intraoperative small-volume boluses of diluted papaverine plus heparin in peripheral arterial catheters of pediatric patients will prevent arterial spasm and help maintain patency of arterial catheters during general anesthesia.


Description:

Peripheral arterial catheters measure blood pressure with every heartbeat and provide valuable information regarding the status of the heart and the overall well being. It is of utmost importance to maintain the utility and patency of these catheters throughout the procedure. As standard procedure, heparin, a blood thinner, is used routinely during the surgical procedure to keep these catheters from clotting, and papaverine, an arterial relaxation agent, is used after surgery to maintain patency of these catheters. In this study, participants will be randomized to receive two boluses of papaverine with heparin during the procedure (experimental arm) or heparin alone during the procedure (control arm) [in both arms, the first bolus will be administered as soon as the arterial catheter is placed and secured and again one hour after initial bolus]. If the arterial catheter spasm/patency or waveform does not improve 10 minutes after the second bolus, then the anesthesiology care team will consider treating clinically with 0.3 mg of papaverine.


Recruitment information / eligibility

Status Completed
Enrollment 100
Est. completion date October 10, 2020
Est. primary completion date October 10, 2020
Accepts healthy volunteers No
Gender All
Age group N/A to 17 Years
Eligibility Inclusion Criteria: - All patients age 0-17 years who would require elective placements of arterial catheters based on patients clinical complexity (ex. congenital heart disease) or based on the type of surgery (ex. open heart surgery). Exclusion Criteria: - Patients with a history of significant liver dysfunction. - Patients undergoing liver transplants. - Patients with Grade 2 or more of intraventricular hemorrhage. - All preterm patients with a gestational age less than 37 weeks at the time of surgery.

Study Design


Related Conditions & MeSH terms


Intervention

Drug:
Papaverine
0.12 mg/mL papaverine administered as soon as the arterial catheter is placed and secured, and 0.12 mg/mL papaverine administered one hour after initial dose
Heparin
2 units/mL heparin administered as soon as the arterial catheter is placed and secured, and 2 units/mL heparin administered one hour after initial dose
Rescue papaverine, as needed
If the arterial catheter spasm/patency or waveform does not improve 10 minutes after the second papaverine plus heparin or heparin only dose, then the anesthesiology care team will consider treating clinically with 0.3 mg of papaverine.

Locations

Country Name City State
United States UT Health Houston Texas

Sponsors (1)

Lead Sponsor Collaborator
The University of Texas Health Science Center, Houston

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Number of Participants With Optimal Arterial Waveform Optimal waveform was defined as easy aspiration of a blood sample (negative aspiration is easy and draws back freely without cavitation, and takes no more than 30 seconds to draw 1 mL), absence of color change at the catheter insertion site, and presence of a dicrotic notch in the arterial pressure waveform (a distinct dicrotic notch implies system has good resolution at higher frequencies and is not overdamped). 5 minutes after first dose
Secondary Number of Participants With Optimal Arterial Waveform Optimal waveform was defined as easy aspiration of a blood sample (negative aspiration is easy and draws back freely without cavitation, and takes no more than 30 seconds to draw 1 mL), absence of color change at the catheter insertion site, and presence of a dicrotic notch in the arterial pressure waveform (a distinct dicrotic notch implies system has good resolution at higher frequencies and is not overdamped). 60 minutes after first dose
Secondary Number of Participants With Suboptimal Waveforms Who Received Rescue Papaverine and for Whom Papaverine Rescued Suboptimal Waveforms These data were collected only from participants who received rescue papaverine. 7 in the Papaverine plus Heparin arm received rescue papaverine. 17 in the Heparin arm received rescue papaverine. 5 minutes after injection of rescue papaverine (about 70 minutes after first study drug dose and about 10 minutes after second study drug dose)
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