Clinical trial NCT00822679: Eszopiclone and Inflammatory Mediators in Patients With Acute Coronary Syndrome
Official title: Eszopiclone and Inflammatory Mediators in Patients With Acute Coronary Syndrome
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE4
Conditions: Acute Coronary Syndrome
Sleep Disorder
Keywords: Acute Coronary Syndrome
cytokines
pro-coagulant mediators
sleep disorders
Lead sponsor: University of Arizona
Sponsor class: OTHER
Collaborators: name: Sumitomo Pharma America, Inc.
name: Southern Arizona VA Health Care System
First posted: 2009-01-14
Enrollment: 5
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: SUPPORTIVE_CARE

Brief summary: The purpose of the study is to examine the effects of Eszopiclone, a sleep aid, on inflammatory mediators and coagulability in patients with a recent myocardial infarction.

Detailed description: Abnormalities of sleep are common in hospitalized patients, but the mechanisms and consequences are not well understood. In many of these patients, sleep is very disrupted, occurs during the daytime, and circadian rhythm is diminished or lost. Hospitalized patients experience more frequent arousals and awakenings than is normal and show decreases in rapid eye movement and slow wave sleep. The degree of sleep fragmentation is at least equivalent to that seen in patients with obstructive sleep apnea. About 20% of arousals and awakenings are related to noise, 10% are related to health care personnel and care-related activities, and the cause for the remainder is not known, although severity of underlying disease is likely an important factor.

In studies of sleep following acute myocardial infarction, marked disturbances have been found in patients, whether in the ICU and on the wards. These disturbances include long periods of wakefulness; poor sleep efficiency, and disruption of REM sleep. The fact that there is also a loss in circadian rhythm in these patients may indicate a widespread disruption of bodily homeostasis which, in turn, may be related to the infarct itself, to a more generalized physiological response to stress or to other factors. Sleep disruption can induce sympathetic activation and elevation of blood pressure, which may contribute to patient morbidity.

It has been shown that there is an increased level of some inflammatory and coagulation factors in the recovery period following an acute myocardial infarction (MI). Post MI patients have higher levels of TNF-α, IL-6 and tissue plasminogen activator as well as lower levels of antithrombin III and protein C.

The aim of this study is to determine whether the sleep-aid Eszopiclone can improve sleep, decrease inflammation, and decrease pro-coagulation factors in patients who have recently suffered myocardial infarction when compared with a control group without sleep aids. Eszopiclone is a benzodiazepine receptor agonist which improves sleep quality by reducing the time to sleep onset and reduces wakefulness during the sleep period. Unlike benzodiazepines, it does not affect the deeper stage 3 and 4 sleep. The result is that it provides a more nearly normal night sleep than other sleep aids. It is hoped that improved sleep patterns will result in more rapid normalization of inflammatory and coagulation factors and perhaps more rapid recovery.

Eligibility criteria: Inclusion Criteria:

* Patients with recent (less than or equal to 8 weeks) "uncomplicated" acute myocardial infarction, can either be ST elevation MI (STEMI) or non-ST elevation MI (non-STEMI) and subsequent to successful treatment (percutaneous revascularization or medical therapy).

Exclusion Criteria:

* Obstructive sleep apnea (OSA, defined as apnea-hypopnea index \> 15 per hour) or previous diagnosis of OSA.
* Patients with life-threatening arrhythmias (such as atrial fibrillation/flutter with hypotension, ventricular tachycardia, or ventricular fibrillation, or significant heart block that requires pacing \[Type III, Type IIb\]), cardiogenic shock, severe heart failure requiring high levels of inspired oxygen (FiO2 \>40%), persistent chest pain despite medical or other interventions, and patients who are considered too unstable to participate for other medical reasons or complications (such as concomitant strokes, retroperitoneal hematoma, gastro-intestinal bleeding). Also excluded are patients with history of cardiac arrest during the same hospitalization.
* Unable to take oral medications
* Use of other sedative-hypnotics
* Hypersensitivity to Eszopiclone or any component of the formulation
* Pregnancy

Primary outcomes:
measure: Changes in Circulating Inflammatory Cytokines (Interleukin [IL]-1B, IL-6, IL-10, and Tumor Necrosis Alpha [TNF-α]) and Pro-coagulant Mediators (Soluble P-selectin and CD40 Ligand).
timeFrame: 2 days
Secondary outcomes:
measure: Changes in Objective and Subjective Measures of Sleep
timeFrame: 4 days
Other outcomes:
Locations:
city: Tucson
country: United States
facility: Southern Arizona VA Health Care System
state: Arizona
Study officials:
affiliation: Southern Arizona VA Health Care System
name: Sairam Parthasarathy, MD
role: PRINCIPAL_INVESTIGATOR
References: