Effect of Heart Rate Control With Ivabradine on Hemodynamic in Patients With Sepsis

Official title

Effect of Heart Rate Control With Ivabradine on Hemodynamic in Patients With Sepsis: a Prospective, Multicenter, Randomized Controlled Trial

Overview

Sepsis, a life-threatening syndrome, is often accompanied by tachycardia in spite of adequate volume resuscitation to correct hypovolemia and vasopressor medication to correct hypotension. Recently, relevant studies have shown that sustained tachycardia in sepsis was also related to high mortality, and appropriate control of heart rate could improve prognosis. Ivabradine reduces heart rate directly without a negative inotropic effect through inhibition of the If ionic current，which is absent from the traditional rate control drug (beta-blockers). This is a prospective, multicenter, randomized, open label study designed to compare ivabradine with placebo on the difference of heart rate and haemodynamics in patients with sepsis.

Detailed description

This study aims to enroll 172 patients with sepsis as defined by The Third International Consensus Definitions for Sepsis and Septic Shock criteria and sinus tachycardia (HR ≥ 95 bpm) despite a hemodynamic optimization. Patients will be randomly assigned to standard treatment group (GS) or ivabradine group (GI，standard treatment for sepsis plus enteral ivabradine). Patients in GI, with a heart rate control target of 70 to 94bpm, received ivabradine within the first 96 hours after randomization, and overall participants are followed up to 28 days. The secondary outcomes include the difference in SOFA score, incidence of serious adverse events, need for organ support, length of ICU stay, and 28-day overall mortality.

Despite recent studies are limited, this study will investigate whether HR control using ivabradine is safe, feasible, and effective, and further enhance the understanding of ivabradine in patients with sepsis.

Interventions

• Drug Ivabradine
  After randomization, the starting dose of ivabradine, 5mg, is given via the gastrointestinal tract every 12 hours. Heart rate control ranged from 70 to 94 bpm. Ivabradine was maintained until 96 hours after initiation of therapy. Beyond this period, the decision to continue ivabradine is left to the discretion of the treating intensivist. During the drug intervention period, heart rate is assessed before each dose. Ivabradine is tapered or discontinued if the heart rate is lower than the target

Primary outcome measures

• The difference of a reduction in heart rate [Time frame: 96 hours]
• The difference in MAP [Time frame: 96 hours]
• The difference in CI [Time frame: 96 hours]
• The difference in LVEF [Time frame: 96 hours]
• The difference in SVI [Time frame: 96 hours]
• The difference in VIS [Time frame: 96 hours]

Secondary outcome measures (6)

• 28-day overall mortality [Time frame: 28 days]
• difference of the Sequential Organ Failure Assessment score [Time frame: 96 hours]
• length of ICU stay [Time frame: 28 days]
• The percentage of need for organ support [Time frame: 28 days]
• length of in-hospital stay [Time frame: 28 days]
• Incidence of adverse events [Time frame: 96 hours]

Eligibility criteria

Inclusion criteria

• Adult patients aged 18 years or above.
• Being treated in an intensive care unit.
• Sepsis is diagnosed according to Sepsis-3.0 criteria, which is defined as patients requiring antimicrobial agents due to confirmed or suspected infection, acute increase in the SOFA score at least 2 points.
• Mean arterial pressure (MAP) is maintained ≥65 mmHg with adequate volume resuscitation and vasopressor therapy. Volume resuscitation is considered adequate when Central Venous Pressure (CVP) > 8mmHg, global end-diastolic volume index (GEDI) > 680ml/m2 and resting inferior vena cava (IVC) diameter > 1.5cm.
• Patients are in a relatively stable period of hemodynamics, as defined that the targe mean arterial pressure are maintained with the same dosage of vasopressors for at least 2 h.
• Sinus rhythm with heart rate ≥ 95bpm maintain for at least 2 hours but less than 72 hours.

Exclusion criteria

• Patients who had received ivabradine therapy or known allergy to it prior to randomization.
• Patients with severe liver dysfunction (Child-C grade).
• Patients with a history of pre-existing chronic renal failure (glomerular filtration rate less than 15 ml/min/1.73 m2), except patients treated with continuous renal replacement therapy (CRRT).
• Patients with known seizure disorder.
• Patients with any contraindication to gastrointestinal drug administration.
• Pregnant or lactating patients.
• patients requiring the use of potent cytochrome CYP3A4 inhibitors such as antifungals of the azole-type (specifically ketoconazole and itraconazole), macrolide antibiotics (specifically clarithromycin and erythromycin) and HIV protease inhibitors (specifically nelfinavir and ritonavir).
• Patients with active bleeding;
• Patients with cardiac dysfunction caused by non-septic causes such as recent (< 2months) acute myocardial infarction, chronic cardiac dysfunction (NYHA Class Ⅳ), congenital heart disease, pericardial tamponade, severe aortic regurgitation and aortic coarctation before enrollment.
• Patients with sinoatrial block, sick sinus syndrome, atrioventricular block or heart rate dependence on pacemaker.
• Patients with refractory shock, which may be considered if one of the following conditions still exists in spite of active volume resuscitation, high doses of vasoactive drugs (VIS score >120), and other regular therapy: 1) Worsening hypotension (MAP<65mmHg); 2) Lactate persistence>5mmol/L (two times in a row with an interval of more than 30min), and a progressive upward trend; 3) Mixed venous blood oxygen saturation (SvO2) sustained <55% (more than two consecutive times, more than 30min apart), and progressive deterioration. The above conditions lasted for more than 5 hours.
• Use of beta blockers within 24 hours before enrollment.
• Pheochromocytoma patients.
• After cardiopulmonary resuscitation.
• Patients who have been enrolled in another interventional clinical study.

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation

Randomized

Model

Parallel assignment

Masking

Open label

Primary purpose

Treatment

Study locations

China · 3 centers

• the Affiliated Panyu central Hospital of Guangzhou Medical University — Guangzhou
• the Second Affiliated Hospital of Guangzhou Medical University — Guangzhou
• the Third Affiliated Hospital of Guangzhou Medical University — Guangzhou

Publications

• Zheng J, Wen D, Pan Z, Chen X, Kong T, Wen Q, Zhou H, Chen W, Zhang Z. Effect of heart rate control with ivabradine on hemodynamic in patients with sepsis: study protocol for a prospective, multicenter, randomized controlled trial. Trials. 2024 Oct 23;25(1):710. doi: 10.1186/s13063-024-08560-5. PMID 39443954

Identifiers

NCT: NCT05882708 · 2022-LCYJ-YYDZX-02

Primary sources (government registries)

• ClinicalTrials.gov (US NIH)

View this study on ClinicalTrials.gov ↗