Sleep-related breathing disorders (SBAS), particularly obstructive sleep apnea syndrome (OSAS), are one of the most common causes of non-restorative sleep. Disturbances of sleep disorders include apneas and hypopneas associated with either or not pharyngeal obstruction and hypoventilation. Depending
Obstructive Sleep Apnea (OSA) is a well-known disorder of upper airways collapse during sleep time leading to oxygen desaturation, sleep fragmentation, tissue suffering and hypercapnia. The repeated airways collapse leads to a fall of blood saturation levels during sleep time and it is linked to
Among Asian patients, intracranial stenosis is more common and accounts for about 30-50% of all strokes. The risk of recurrent stroke or TIA in presence of intracranial stenosis of a major intracranial artery and recent TIA/ stroke is about 23% at 1 year despite treatment. Recurrence rate for
In this study, 100 professional boxers that experience a concussion will be enrolled, randomized to either placebo or sildenafil (60mg) drug treatment, and arterial spin labeling and BOLD-MRI with hypercapnia will used to assess CBF and CVR, respectively. Symptom reporting, blood biomarkers, and
Background Cerebral autoregulation is generally considered to maintain cerebral blood flow (CBF) if mean arterial pressure (MAP) is between 60 and 150 mmHg. Yet, it is controversial whether there is a plateau for CBF. Thus, blood velocity of the middle cerebral artery (MCA Vmean), as an index of
1. Introduction.
Weaning covers the entire process of liberating the patient from mechanical ventilation (MV) support and the endotracheal tube or tracheostomy. For the majority of mechanically-ventilated patients spontaneous breathing (weaning) can be successfully accomplished quickly and easily,
This is a randomized control trial, with randomization nested within rationally-formed groups. Three major groups will be assessed: 1) Coronary artery disease (CAD) patients, 2) Metabolic Syndrome (MetS), and 3) healthy Control (CTL) participants. Allocation into the Healthy CTL versus MeTS groups
Unstable respiratory control (high loop gain) is an important non-anatomical risk factor for obstructive sleep apnea. Studies showed high loop gain might also be acquired from long-term hypoxemia/hypercapnia due to OSA, and could be decreased by CPAP therapy in some of the individuals. Whether
Complications of diabetes represent the main concern for modern diabetes therapy, and it has become a priority to further characterise the pathophysiological mechanisms of these complications to ensure the development of novel rational therapeutic strategies.
Although the prolonged exposure of
Chronic obstructive pulmonary disease (COPD) is the fourth leading cause of death in the world, a lung disorder which is characterized by a partially reversible airflow limitation, which is usually progressive, and associated with an abnormal inflammatory response to noxious particles or gases. In
Cerebral autoregulation (CA) is a complex mechanism that serves the essential and vital purpose of controlling cerebral blood flow and metabolism. A stable and optimal brain blood flow is imperative for normal brain function; therefore normal function of CA is crucial for brain health. Diabetes
- The study population will include 30 males and females with persistent post-concussive symptoms continuing up to 7 days after TBI. Participants will be military service members or civilians presenting as outpatients for clinical management of TBI or post-concussive symptoms at the Center for
The goal of this Phase II study is to generate pilot data that will allow for the design of a clinical trial of sildenafil (Viagra®) to treat patients with traumatic vascular injury in the chronic state after traumatic brain injury (TBI). Injury to small and medium-sized blood cerebral blood vessels
Investigators expected to include in the study of 120 patients, aged between 35 and 75 years, belonging to the following diagnostic categories:
- 30 patients diagnosed with TIA / ischemic stroke within 7 days of admission and evidence at polysomnography of central apnoea (central apnoea index> 10 /
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