Pulmonary Hypertension
Conditions
Keywords
Pulmonary hypertension, Cardiac surgery, Cardiopulmonary Bypass (CPB)
Brief summary
The purpose of this study is to investigate the concentration-effect relationship of inhaled milrinone after prophylactic administration in cardiac surgical patients with preoperative pulmonary hypertension undergoing cardiopulmonary bypass.
Detailed description
Milrinone elimination will be verify with blood and urine samples analysis.
Interventions
Inhaled milrinone 5 mg (as for the injectable solution)
Sponsors
Study design
Eligibility
Inclusion criteria
* Patients scheduled for elective cardiac surgery under CPB * High risk patients: NYHA class II-III * Preoperative diagnostic of pulmonary hypertension: * Systolic pulmonary artery pressure (sPAP) \> 35 mm Hg; or * Mean pulmonary artery pressure (mPAP) \> 25 mm Hg; or * mAP/mPAP \< 3.0 (after induction of anesthesia).
Exclusion criteria
* Open Heart Surgery * Contraindication to transesophageal echocardiography (TEE) * Hemodynamic instability before surgery * Emergency surgery
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Study the elimination rate of milrinone administered by inhalation | up to 24 hours |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Demonstrate the presence or absence of hemodynamic and echographic effects observed after inhalation of milrinone | 15 min after the of study drug administration | hemodynamic values evaluated will be: central venous pressure, systolic and diastolic pulmonary pressure, wedge, cardiac output, cardiac frequency, systolic and diastolic pressure, SaO2, EtCO2. Patient will also have arterial and venous gaz. Echographic values will be evaluated to see the cardiac fonction: left and right ventricular systolic and diastolic function and valvular function. |
| Confirmation of the safety of inhaled milrinone | 24 hours after cardiac surgery | Verification of the absence of deleterious effects on cardiac output and systemic arterial pressure. |
| Determination of the efficacy of inhaled milrinone in the treatment of pulmonary hypertension | 15 min after end of milrinone administration | Efficacy in the treatment of pulmonary hypertension is defined as a reduction of the mean pulmonary pressure of 10-20 % |
Countries
Canada