Active clinical trials for "Sleep Apnea, Central"

In patients with underlying heart diseases like hypertensive heart disease, coronary heart disease or dilative cardiomyopathy obstructive sleep-apnea, central sleep-apnea and Cheyne-Stokes-respiration are common finding in polysomnography. In a lot of these patients it is neither a purely obstructive sleep-apnea syndrome nor a complete Cheyne-Stokes-respiration but a combination of both sleep related respiratory disturbances. Previous studies showed an improvement of the central respiratory disorder, for example Cheyne-Stokes-respiration, under continuous positive pressure breathing (CPAP) and an improvement of the left ventricular pump function. (Naughton 1995, Tkacova 1997). However, the recently published CanPAP study could not prove any improvement in the mortality among CPAP therapy patients in comparison to the optimal medical treatment, although under this therapy, the number of breathing disturbances, the oxygen saturation at night and the ejection fraction of the left ventricle showed a significant improvement.(Bradley 2005) Earlier studies proved the adaptive servo ventilation to be an effective therapy for patients with central sleep-apnea and Cheyne-Stokes-respiration respectively. (Teschler 2001) Teschler's study showed that the adaptive servo ventilation therapy with a reduction of central sleep apnea down to 10/hours succeeded. With the SOMNOvent CR a new therapy-algorithm has been developed for the adaptive servo ventilation in patients with obstructive sleep apnea and Cheyne-Stokes-respiration with underlying heart disease. In the first validation study this therapy was very effective and presented only few adverse effects in the patients. (Galetke 2007) The goal of the study was to compare this new therapeutic option (SOMNOvent CR) with the established method of continuous positive airway pressure (CPAP) in patients with combination of obstructive sleep-apnea syndrome and Cheyne-Stokes-respiration with underlying heart disease.

The main goal of this French multicenter observational cohort study is to prospectively collect data assessing the impact of the Adaptative Servo-Ventilation treatment on the quality of sleep of patients with central or combined sleep apnea syndrome (SAS) out of Heart Failure (HF) with altered ejection fraction, with a predominant central SAS.

Comparing two BiPAP autoSV devices in participants with complex sleep apnea and determining if the new device will treat those participants no worse than when compared to its predecessor device.

Pilot study testing the Bipap autoSV Advanced Algorithm during full night, in-lab polysomnography (PSG) and 3 months at home on patients with Central Sleep Apnea, Hunter Cheyne Stokes Respiration, or Complex Sleep Apnea.

Sudden unexpected death in epilepsy (SUDEP) is a tragic outcome of seizure disorders that primarily affect young adults suffering from refractory epilepsy. In this population, SUDEP incidence is estimated at 0.5%. While the mechanisms of SUDEP are not completely understood, it appears that the majority of such death occurs in the immediate aftermath of a general tonic-clonic seizure. There is currently no validated preventive treatment for SUDEP. Some evidence suggest that modulation of the serotoninergic tone, and more specifically selective serotonin recapture inhibitor (SSRI) such as fluoxetine, might prevent SUDEP. Indeed, fluoxetine prevents seizure-induced lethal central apneas in DBA/2 and DBA/1 mice, one of the few animal models of SUDEP. Furthermore, serotoninergic bulbar nuclei are known to play a major role in the control of breathing, especially during sleep and in response to repeated hypoxia. In patients with epilepsy undergoing in-hospital video-EEG monitoring, about one third of seizures are associated with decrease in SpO2 <90%, an abnormality suspected to represent a risk factor of SUDEP. In a retrospective uncontrolled study, patients treated with SSRIs displayed less frequent ictal/post-ictal hypoxemia than patients not taking SSRIs. The investigators project aimed at testing whether fluoxetine can reduce the risk of ictal/post-ictal hypoxemia by performing a double-blind, randomized, placebo-controlled trial in patients undergoing video-EEG monitoring as part of the pre-surgical evaluation of their focal drug-resistant epilepsy.

The present study is a prospective, single cohort study involving patients on narcotic medications, undergoing overnight sleep studies in the clinical sleep laboratory. The main hypothesis for the study is that the the frequency of sleep respiratory events (including central apneas) identified by a home sleep apnea test (HSAT) device (WatchPAT200U (wp200U) with centrals; Itamar Medical Ltd.) will significantly correlate with in-lab polysomnography (gold standard).

The congenital central hypoventilation syndrome (CCHS), also known as the Ondine syndrome, is a very rare genetic disorder. In contrast with healthy people, patients do not increase breathing in response to an excess of carbon dioxide (CO2). As a consequence, they do not breath sufficiently, or even stop breathing, during sleep. Their survival depends only on mechanical respiratory assistance, all life long. We have recently published two cases of recovery of a response to CO2 in patients taking desogestrel as a contraceptive pill. The goal of the study is therefore to assess the hypothesis that desogestrel will restore a respiratory response to CO2 in CCHS patients and allow them to breath sufficiently during sleep without mechanical assistance.

The purpose of this study is to determine whether buspirone compared to acetazolamide and to placebo will reduce the number and/or severity of breathing pauses during sleep that occur in some patients with Heart Failure.

The study evaluate the effect of adaptative servoventilation (ASV) initiation combined with 14 days Zopiclone vs Placebo treatment in patients with central sleep apnea (CSA) syndrome.

This study has been developed in order to demonstrate diagnostic efficacy of the DreamKit device against polysomnography.