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Last Updated: November 19, 2019

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CLINICAL TRIALS PROFILE FOR PROTAMINE SULFATE

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All Clinical Trials for Protamine Sulfate

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00684450 Cardiac Surgery: In Vivo Titration of Protamine Completed Organon N/A 2008-06-01 Safe use of cardiopulmonary bypass (CPB) requires massive doses of intravenous unfractionated heparin. At end-CPB, residual heparin is neutralized with intravenous injection of protamine sulfate. This prospective, randomized, controlled study will be conducted in 82 voluntary subjects admitted for elective, first intention, cardiac surgery requiring cardiopulmonary bypass. Each will be randomly assigned to one of two groups. The control group will be submitted to a standard protamine infusion of 1.3mg :100U of the total heparin dose given during bypass. The test group will receive an infusion of protamine (over 15 minutes) until activated clotting time (ACT) values (determined every 3 minutes) depict a plateau, sign that the optimal protamine to heparin ratio has been attained. The investigators hypothesize this new in vivo titration method to be as efficient as the standard protocol (adequacy of heparin neutralization, % heparin rebound, bleeding, and transfusion), and potentially safer by its ability to prevent protamine overdose and its deleterious impact on platelet function.15 Principal Objective Evaluate a new in vivo method of titration of protamine sulfate. Secondary Objective Evaluate the impact of this method on the adequacy of heparin neutralization by measuring: 1. platelet count 2. postoperative bleeding 3. transfusion exposure a 4. incidence of heparin rebound
NCT00684450 Cardiac Surgery: In Vivo Titration of Protamine Completed Montreal Heart Institute N/A 2008-06-01 Safe use of cardiopulmonary bypass (CPB) requires massive doses of intravenous unfractionated heparin. At end-CPB, residual heparin is neutralized with intravenous injection of protamine sulfate. This prospective, randomized, controlled study will be conducted in 82 voluntary subjects admitted for elective, first intention, cardiac surgery requiring cardiopulmonary bypass. Each will be randomly assigned to one of two groups. The control group will be submitted to a standard protamine infusion of 1.3mg :100U of the total heparin dose given during bypass. The test group will receive an infusion of protamine (over 15 minutes) until activated clotting time (ACT) values (determined every 3 minutes) depict a plateau, sign that the optimal protamine to heparin ratio has been attained. The investigators hypothesize this new in vivo titration method to be as efficient as the standard protocol (adequacy of heparin neutralization, % heparin rebound, bleeding, and transfusion), and potentially safer by its ability to prevent protamine overdose and its deleterious impact on platelet function.15 Principal Objective Evaluate a new in vivo method of titration of protamine sulfate. Secondary Objective Evaluate the impact of this method on the adequacy of heparin neutralization by measuring: 1. platelet count 2. postoperative bleeding 3. transfusion exposure a 4. incidence of heparin rebound
NCT01006863 Preoperative Ephedrine Attenuates the Hemodynamic Responses of Propofol During Valve Surgery: A Dose Dependent Study Completed Mansoura University Phase 2 2004-03-01 The prophylactic use of small doses of ephedrine may be effective in obtunding of the hypotension responses to propofol with minimal hemodynamic and ST segment changes. The investigators aimed to evaluate the effects of small doses of ephedrine on hemodynamic responses of propofol anesthesia for valve surgery. There is widespread interest in the use of propofol for the induction and maintenance of anesthesia for fast track cardiac surgery. However, its use for induction of anesthesia is often associated with a significant rate related transient hypotension for 5-10 minutes. This is mainly mediated with decrease in sympathetic activity with minor contribution of its direct vascular smooth muscle relaxation and direct negative inotropic effects. Ephedrine has demonstrated as a vasopressor drug for the treatment of hypotension in association with spinal and general anesthesia. Prophylactic use of high doses of ephedrine [10-30 mg] was effective in obtunding the hypotensive response to propofol with associated marked tachycardia. However, the use of smaller doses (0.1-0.2 mg/kg) was successfully attenuated, but not abolished, the decrease in blood pressure with transient increase in heart rate. This vasopressor effect is mostly mediated by β-stimulation rather than α-stimulation and also indirectly by releasing endogenous norepinephrine from sympathetic nerves. Because the effect of decreasing the dose of ephedrine from 0.1 to 0.07 mg/kg may be clinically insignificant, the investigators postulated that the prophylactic use of small dose of ephedrine may prevent propofol-induced hypotension after induction of anesthesia for valve surgery with minimal in hemodynamic, ST segment, and troponin I changes. The aim of the present study was to investigate the effects of pre-induction administration of 0.07, 0.1, 0.15 mg/kg of ephedrine on heart rate (HR), mean arterial blood pressure (MAP), central venous and pulmonary artery occlusion pressures (CVP and PAOP, respectively), cardiac (CI), stroke volume (SVI), systemic and pulmonary vascular resistance (SVRI and PVRI, respectively), left and right ventricular stroke work (LVSWI and RVSWI, respectively) indices, ST segment, and cardiac troponin I (cTnI) changes in the patients anesthetized with propofol-fentanyl for valve surgery.
NCT01006863 Preoperative Ephedrine Attenuates the Hemodynamic Responses of Propofol During Valve Surgery: A Dose Dependent Study Completed King Faisal University Phase 2 2004-03-01 The prophylactic use of small doses of ephedrine may be effective in obtunding of the hypotension responses to propofol with minimal hemodynamic and ST segment changes. The investigators aimed to evaluate the effects of small doses of ephedrine on hemodynamic responses of propofol anesthesia for valve surgery. There is widespread interest in the use of propofol for the induction and maintenance of anesthesia for fast track cardiac surgery. However, its use for induction of anesthesia is often associated with a significant rate related transient hypotension for 5-10 minutes. This is mainly mediated with decrease in sympathetic activity with minor contribution of its direct vascular smooth muscle relaxation and direct negative inotropic effects. Ephedrine has demonstrated as a vasopressor drug for the treatment of hypotension in association with spinal and general anesthesia. Prophylactic use of high doses of ephedrine [10-30 mg] was effective in obtunding the hypotensive response to propofol with associated marked tachycardia. However, the use of smaller doses (0.1-0.2 mg/kg) was successfully attenuated, but not abolished, the decrease in blood pressure with transient increase in heart rate. This vasopressor effect is mostly mediated by β-stimulation rather than α-stimulation and also indirectly by releasing endogenous norepinephrine from sympathetic nerves. Because the effect of decreasing the dose of ephedrine from 0.1 to 0.07 mg/kg may be clinically insignificant, the investigators postulated that the prophylactic use of small dose of ephedrine may prevent propofol-induced hypotension after induction of anesthesia for valve surgery with minimal in hemodynamic, ST segment, and troponin I changes. The aim of the present study was to investigate the effects of pre-induction administration of 0.07, 0.1, 0.15 mg/kg of ephedrine on heart rate (HR), mean arterial blood pressure (MAP), central venous and pulmonary artery occlusion pressures (CVP and PAOP, respectively), cardiac (CI), stroke volume (SVI), systemic and pulmonary vascular resistance (SVRI and PVRI, respectively), left and right ventricular stroke work (LVSWI and RVSWI, respectively) indices, ST segment, and cardiac troponin I (cTnI) changes in the patients anesthetized with propofol-fentanyl for valve surgery.
NCT02033629 Low Remifentanil Target Controlled Infusions for Cardiac Surgery Recruiting Dammam University Phase 3 2014-08-01 The development of target effect-site controlled concentrations (TCI) of remifentanil have gained increasing acceptance during cardiac surgery as regarding the resulting of hemodynamic stability and early extubation. The use of low-dose opioid technique has been progressively used nowadays because of its ceiling effect to attenuate cardiovascular responses to noxious stimuli. We hypothesize that the use of low target remifentanil effect site concentrations may provide comparable shorter times to tracheal extubation and hemodynamic stability to the use of high remifentanil Ce during target-controlled propofol anesthesia for cardiac surgery.
NCT02974660 Protamine Sulfate During Transcatheter Aortic Valve Implantation Not yet recruiting Medical University of Warsaw Phase 4 2016-11-01 Transcatheter aortic valve implantation (TAVI) is a new, rapidly emerging standard of care in inoperable and high-risk patients with severe, symptomatic aortic stenosis. Information regarding reversal of unfractionated heparin with protamine sulfate in order to facilitate access site closure is scarce and based on expert consensus. Clinical practice varies between centers. Protamine sulphate may decrease the amount of bleeding complications related to the access-site. The impact on possible thromboembolic complications is unknown. Both bleeding and thromboembolic complications increase mortality after TAVI. A randomized trial is required in order to assess impact of protamine sulfate on prevalence and extent of bleeding and thromboembolic complications.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for Protamine Sulfate

Condition Name

Condition Name for Protamine Sulfate
Intervention Trials
Bleeding 2
Cardiac Surgery With Cardiopulmonary Bypass 1
Valve Surgery 1
Cardiac Surgery 1
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Condition MeSH

Condition MeSH for Protamine Sulfate
Intervention Trials
Aortic Valve Stenosis 1
Delirium 1
Hypotension 1
Venous Thromboembolism 1
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Clinical Trial Locations for Protamine Sulfate

Trials by Country

Trials by Country for Protamine Sulfate
Location Trials
Egypt 3
Canada 2
Saudi Arabia 2
United States 1
China 1
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Trials by US State

Trials by US State for Protamine Sulfate
Location Trials
Michigan 1
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Clinical Trial Progress for Protamine Sulfate

Clinical Trial Phase

Clinical Trial Phase for Protamine Sulfate
Clinical Trial Phase Trials
Phase 4 3
Phase 3 1
Phase 2 1
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Clinical Trial Status

Clinical Trial Status for Protamine Sulfate
Clinical Trial Phase Trials
Recruiting 5
Not yet recruiting 2
Completed 2
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Clinical Trial Sponsors for Protamine Sulfate

Sponsor Name

Sponsor Name for Protamine Sulfate
Sponsor Trials
Ain Shams University 2
Montreal Heart Institute 1
Wuhan Asia Heart Hospital 1
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Sponsor Type

Sponsor Type for Protamine Sulfate
Sponsor Trials
Other 10
Industry 1
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