Previous studies have demonstrated that lung volume during wakefulness influences upper
airway size and resistance, particularly in patients with sleep apnea. We sought to determine …

Background: Previous studies have shown that changes in lung volume influence upper
airway size and resistance, particularly in patients with obstructive sleep apnoea (OSA), and …

We investigated whether cephalometric measurements, nocturnal indices of negative
intrathoracic pressure, or the frequency of sleep-related breathing disorders were related to …

We examined the pressure-flow relationships in patients with obstructive sleep apnea
utilizing the concepts of a Starling resistor. In six patients with obstructive sleep apnea, we …

Changes in sleep posture have been shown to improve obstructive sleep apnea (OSA). To
investigate the mechanisms by which this occurs we assessed upper airway stability in eight …

Study objectives: Previous studies have shownthat the level of flow through the upper airway
in patients withobstructive sleep apnea (OSA) is determined by the critical closingpressure …

Many patients with obstructive sleep apnea syndrome (OSAS), despite therapy with nasal
continuous positive airway pressure (CPAP), have persisting daytime somnolence that may …

Ventilatory instability may play an important role in the pathogenesis of obstructive sleep
apnea. We hypothesized that the influence of ventilatory instability in this disorder would …

Daytime pulmonary hypertension (PH) is relatively common in obstructive sleep apnea
(OSA) and is thought to be associated with pulmonary vascular remodeling (PRm). The …

To determine the influence of changes in nasal pressure (Pn) on airflow mechanics in the
upper airway, we examined the effect of elevations in Pn on upper airway resistance and …