What is the clinical evidence from this study?

Study design: RCT. Population: Pressure load-induced right ventricular failure (n=15). Intervention: Levosimendan vs. Dobutamine. Primary outcome: Right ventricular-pulmonary arterial (RV-PA) coupling efficiency (Ees/Ea ratio).

What question did this study set out to answer?

This study investigates how levosimendan and dobutamine affect right ventricular and pulmonary arterial function during induced right ventricular failure.

September 13, 2006Critical Care Medicine

Effects of levosimendan versus dobutamine on pressure load-induced right ventricular failure*

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Key result

Levosimendan restored right ventricular-pulmonary arterial coupling better than dobutamine in dogs with right ventricular failure due to additional pulmonary vasodilatory effects.

Why the study?

Does levosimendan improve RV-PA coupling better than dobutamine in a canine model of pressure load-induced right ventricular failure?

Population

15 anesthetized dogs with persistent right ventricular failure induced by transient pulmonary arterial…

Comparison

Levosimendan 12 microg/kg for 10 mins followed… vs Dobutamine 5 and 10 microg/kg/min

Design

Preclinical, Random assignment

Follow-up

Acute (during infusion)

Authors

FKFrançois KerbaulAgence de la Biomédecine BRBenoı̂t RondeletCHU Dinant Godinne UCL Namur JDJean-Paul Demester

Discussion

Member takes

Implication

Levosimendan may be preferable to dobutamine in experimental RV failure; leaves open translation to clinical RV-PA uncoupling management.

Key Points

This study investigates how levosimendan and dobutamine affect right ventricular and pulmonary arterial function during induced right ventricular failure.
Prospective, controlled, randomized animal study
Fifteen anesthetized dogs underwent pulmonary arterial constriction for 90 minutes to induce RV failure
Animals were randomly assigned to receive either dobutamine or levosimendan, and multiple hemodynamic measurements were taken
Levosimendan significantly decreased pulmonary arterial resistance and elastance, improving RV contractility and RV-PA coupling.
Compared to dobutamine, levosimendan was more effective in reducing afterload while maintaining similar inotropic effects.
Both agents could not stabilize pulmonary hemodynamics, but levosimendan offered additional pulmonary vasodilatory benefits.

Study Design

Type

RCT (n=15)

Randomization

Random assignment

Multicenter

Structured PICO

Does levosimendan improve RV-PA coupling better than dobutamine in a canine model of pressure load-induced right ventricular failure?

Population

15 anesthetized dogs with persistent right ventricular failure induced by transient pulmonary arterial constriction.

Intervention

Levosimendan 12 microg/kg for 10 mins followed by 0.1 and 0.2 microg/kg/min

Comparator

Dobutamine 5 and 10 microg/kg/min

Outcome

Right ventricular-pulmonary arterial (RV-PA) coupling efficiency (Ees/Ea ratio)surrogate

In a canine model of right ventricular failure, levosimendan restored RV-PA coupling better than dobutamine due to combined inotropic and pulmonary vasodilatory effects.

Cite This Study

Kerbaul et al. (2006) conducted an RCT in Pressure load-induced right ventricular failure (n=15). Levosimendan vs. Dobutamine was evaluated on Right ventricular-pulmonary arterial (RV-PA) coupling efficiency (Ees/Ea ratio). Levosimendan restored right ventricular-pulmonary arterial coupling better than dobutamine in dogs with right ventricular failure due to additional pulmonary vasodilatory effects.

synapsesocial.com/papers/6a6c482c050bc01bbbcba649 https://doi.org/10.1097/01.ccm.0000242157.19347.50

Topics

Heart failure HFrEF treatment

View Full Paper

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Effects of levosimendan versus dobutamine on pressure load-induced right ventricular failure*

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Cite This Study

Topics

Effects of levosimendan versus dobutamine on pressure load-induced right ventricular failure*

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Cite This Study

Also Consider

Topics

Also Consider