The effects of incremental application of nasal continuous positive airway pressure (0 to 15 cm H2O) on heart rate, pulmonary artery pressure, and cardiac index were studied noninvasively by Doppler echocardiography. By two-way analysis of variance within two groups (19 normal volunteers and six sleep apnea patients), no significant effects on heart rate, pulmonary artery pressure, ventricular ...

BACKGROUND Sleep-disordered breathing (SDB) is associated with a variety of conditions that cause upper-airway narrowing. It was hypothesized that upper-airway narrowing can occur in patients with rheumatoid arthritis (RA) when retrognathia develops secondary to temporomandibular joint (TMJ) destruction. Therefore, the aim of this study was to detect the prevalence of SDB in patients with acqui...

BACKGROUND Many patients with sleep apnoea/hypopnoea syndrome (SAHS) find nasal continuous positive airway pressure (CPAP) treatment unsatisfactory due to side effects related to mouth air leakage. A study was performed to compare side effects with face mask and nose mask CPAP therapy in patients with SAHS, with and without uvulopalatopharyngoplasty (U3P). METHODS Twenty newly diagnosed patie...

Noninvasive measurement of respiratory resistance during nasal ventilatory support could be useful to assess the mechanical status of the patient and to optimize the ventilator settings. The aim was to investigate whether the forced oscillation technique (FOT) applied through a nasal mask allows reliable noninvasive estimation of respiratory resistance (Rrs) in patients with severe chronic resp...

Chest 1976; 69:722-28 3 Smith BA, Kirby RR, Cooding JM, Civetta JM. Continuous positive airway pressure (CPAP) by face mask. Crit Care Med 1980; 8:483-85 4 Braun NMT. Nocturnal ventilation-a new method. Am Rev Respir Dis 1987; 135:523-24 5 Kerby GR, Mayer LS, Pingelton SK. Nocturnal positive pressure ventilation via nasal mask. Am Rev Respir Dis 1987; 135:738-40 6 Ellis ER, Bye PTP, Bruderer JW...

Intermittent mechanical ventilation via nasal CPAP mask was provided to 13 patients admitted to this institution for exacerbation of chronic respiratory failure. Ten suffered from COPD, two suffered from obesity hypoventilation syndrome (OHS), and one from severe hypothyroidism. All except one presented with dyspnea and hypercapnia due solely to progression of their underlying disease processes...