The Influence of Beta Blocker Therapy on the Hemodynamic Response to Inotrope Infusion in Patients With Acute Decompensated Heart Failure

Completed

Conditions studied: Acute Decompensated Heart Failure, Heart Failure

In brief

Purpose: To compare the hemodynamic effects of dobutamine and milrinone in hospitalized patients who are receiving Beta Blocker Participants: Patients who are admitted to the General Cardiology and Heart Failure Services at the University of North Carolina Hospitals with acute decompensated heart failure, who have maintained steady state concentrations of beta blocker therapy (carvedilol or metoprolol), and who are deemed by the health care team to require pulmonary artery catheter placement and inotropic therapy with dobutamine or milrinone by continuous infusion. Patients that are not currently receiving beta blocker therapy will be enrolled for comparative purposes; however, any patient not at steady state (on or off beta blocker therapy) will not be enrolled. Procedures: After obtaining informed consent, patients will be assigned to the appropriate sub-study group based on beta blocker use (Study A: patients on stable doses of metoprolol and Study B: patients on stable doses of carvedilol). All patients should receive dobutamine followed by milrinone as outlined in the dosing algorithm (see inotrope dosing algorithm attached, as part of the usual standard of practice). Baseline pulmonary artery catheter hemodynamic parameters will be collected prior to administration of inotrope trial of dobutamine followed by milrinone. Hemodynamic parameters will be recorded per the dosing algorithm following initiation and dose titration. Dose titration will be determined by the health care team based upon patient response or lack thereof and tolerability. Changes in hemodynamic parameters in response to dobutamine or milrinone will be compared within study groups. Additionally, data will continue to be collected on patients receiving not beta blocker therapy for comparative purpose.

Key facts

Study ID

NCT01971944

Run by

University of North Carolina, Chapel Hill

People needed

50

Starts

2010-12-01

Expected to finish

2018-10-01

Last updated by the study team

2018-11-14

Who can join

Age: 18 and older, up to 99. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Patients ≥ 18 years of age and English-speaking who are admitted to the General Cardiology or Heart Failure Services at the University of North Carolina Hospitals with acute decompensated heart failure (ADHF).
• Patients deemed by the health care team to require hemodynamic monitoring with a pulmonary artery catheter and inotropic therapy. Patients receiving at least 3 doses of continued beta blocker therapy with carvedilol, metoprolol succinate, or metoprolol tartrate and patients receiving no beta blocker therapy or have missed at least 5 doses of beta-blocker therapy.

You may not qualify if…

• Concomitant treatment with other beta blockers, non-selective alpha blockers (e.g. terazosin, prazosin, doxazosin), non-dihydropyridine calcium antagonists, antiarrhythmic agents except for chronic stables doses of amiodarone, dofetilide or mexiletine.
• Use of inotropes or IV vasoactive agents within 7 days or at time of enrollment Patients with hemodynamically unstable arrhythmias (e.g., Systolic Blood Pressure (SBP) < 80, Heart Rate (HR) > 110), uncorrected primary valvular disease, or current mechanical support including left ventricular assist device (LVADs), Impella devices and balloon pumps
• Patients who have missed more than 1 dose of beta blocker within 72 hours of starting inotrope
• No subjects will be excluded based upon race, gender or ethnicity.

Where it is running

• UNC Healthcare — Chapel Hill, North Carolina, United States

Full record on ClinicalTrials.gov

Trial information comes from ClinicalTrials.gov and is refreshed daily. TrialsForMe does not provide medical care and does not run the studies it lists.