Impact of Levosimendan Preconditioning on Critical Care and In-hospital Lengths of Stay After Cardiac Surgery With Bypass Surgery

Study Overview
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Brief Summary
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Levosimendan, a drug with inotropic, vasodilatory and myocardial protective properties, has been proposed for the prevention and treatment of postoperative low cardiac output syndrome in cardiac surgery. Despite preliminary studies with promising results, large randomized controlled trials aimed at demonstrating the benefits of levosimendan did not show superiority over placebo in this indication. However, in these studies, the infusion was neither performed at the maximum dosage nor during the 24 hours preceding the surgery, but mainly at the very beginning of the operation. However, post hoc analyses showed a reduction in mortality and in the occurrence of low cardiac output syndrome in the subgroup of patients who had undergone isolated coronary artery bypass grafting, in contrast to those who had undergone valvular or combined surgery. Another recent study suggests that under similar conditions, preconditioning with levosimendan started 48 hours before surgery reduces the length of stay in intensive care and the average cost of hospitalization. There are no formal recommendations on the prophylactic use of levosimendan in cardiac surgery for heart failure patients with impaired LVAS. However, the France-Levo registry, a multicenter observational study requested by the HAS, has shown that in real practice there is a place for preconditioning with levosimendan, which is used in this indication for 7% of the patients in the registry. The Cardiovascular Surgery and Transplantation Department of the Nancy Brabois University Hospital, which actively participated in the France-Levo registry, is one of the cardiac surgery centers that uses this practice, as is the University Hospital of Rouen. It is interesting to be able to evaluate retrospectively whether levosimendan preconditioning has a positive impact on the postoperative prognosis of patients and more particularly on the reduction of the length of stay in critical care and in hospital compared to standard management.

Official Title
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Impact of Levosimendan Preconditioning on Critical Care and In-hospital Lengths of Stay After Cardiac Surgery With Bypass Surgery

Conditions
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Levosimendan, Cardiac Surgery, Cardiopulmonary Bypass

Intervention / Treatment
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* Drug: Levosimendan


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients with heart failure impaired LVEF (< 40%), who have undergone left heart surgery (coronary artery bypass grafting and/or mitral and/or aortic valve replacement) under extracorporeal circulation between 01/01/2018 and 28/02/2022 at the Nancy University Hospital or the University Hospital of Rennes, Rouen or Amiens Exclusion Criteria: Initiation of levosimendan > 48 hours or < 24 hours before surgery ECMO pre- or post-op

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 99 Years

Sexes Eligible for Study
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All

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Levosimendan - Interventional<br>Major patients in heart failure with impaired LVEF (< 40%) who have undergone left heart surgery (coronary artery bypass grafting and/or mitral and/or aortic valve replacement) under extracorporeal circulation between 01/01/2018 and 28/02/2022 at the Nancy University Hospital or at the University Hospital of Rennes, Rouen or Amiens, and who have received Levosimendan preoperatively | Drug: Levosimendan<br>* Initiation of levosimendan 48 hours before surgery<br>* Other names: Interventional;|
| Non Levosimendan - Control<br>Major patients in heart failure with impaired LVEF (< 40%) who have undergone left heart surgery (coronary artery bypass grafting and/or mitral and/or aortic valve replacement) under extracorporeal circulation between 01/01/2018 and 28/02/2022 at the Nancy University Hospital or at the University Hospital of Rennes, Rouen or Amiens, and who have not received Levosimendan preoperatively | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Length of stay in ICU | To evaluate the impact of levosimendan preconditioning preoperatively for cardiac surgery on critical care length of stay in patients with heart failure with impaired preoperative LVAS. | date of start of intensive care hospitalization to date of discharge from intensive care hospitalization assessed up to 3 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| On 1-year mortality | To evaluate the impact of preconditioning with Levosimendan before cardiac surgery in patients with heart failure and impaired left ventricular dysfunction on 1-year mortality | 1 year after Levosimendan exposure | 
| the total length of hospital stay | To evaluate the impact of preconditioning with Levosimendan preoperatively for cardiac surgery in patients with heart failure with impaired preoperative left ventricular dysfunction on the total length of hospital stay | start date of hospitalization in intensive care to the date of discharge from conventional sectors evaluated up to 3 months | 
| left ventricular systolic function at hospital discharge | To evaluate the impact of Levosimendan preconditioning before cardiac surgery in patients with heart failure and impaired on left ventricular systolic function at hospital discharge | date of start of intensive care hospitalization to date of discharge from intensive care hospitalization assessed up to 3 months | 
| duration of catecholamine use after surgery | To evaluate the impact of preconditioning with Levosimendan before cardiac surgery in patients with heart failure and impaired left ventricular function before surgery on the duration of catecholamine use after surgery | date of start of intensive care hospitalization to date of discharge from intensive care hospitalization assessed up to 3 months | 
| severity of postcardiotomy cardiogenic shock and/or postoperative vasoplegia using the score Vasoactive Inotropic Score (VIS) | To evaluate the impact of preconditioning with Levosimendan in preoperative cardiac surgery in patients with heart failure with impaired preoperative LVAS on the severity of postcardiotomy cardiogenic shock and/or postoperative vasoplegia | date of start of intensive care hospitalization to date of discharge from intensive care hospitalization assessed up to 3 months | 
| acute renal failure postoperatively | To evaluate the impact of preconditioning with Levosimendan preoperatively for cardiac surgery in patients with heart failure with impaired left ventricular function preoperatively on the rate of acute renal failure postoperatively | on discharge from the intensive care unit | 
| readmission rate for cardiac decompensation | To evaluate the impact of preconditioning with Levosimendan preoperatively for cardiac surgery in patients with heart failure and impaired LVAS preoperatively on the readmission rate for cardiac decompensation | within one year of Levosimendan administration |