ABSTRACT
To investigate the long-term survival of 95 patients treated by home mechanical ventilation, we prospectively analyzed the outcomes of their cases (treatments: 34, tracheostomy; 61, non-invasive methods) using the database of the local registration system in Aichi Prefecture. The annual actuarial probability of continuing home mechanical ventilation for the tracheostomized patients was 97.0% in the first year, 79.0% in the second year, 79.0% in the third year, and 69.2% in the fourth year, and those for the patients treated by non-invasive ventilation were 85.6%, 67.9%, 56.8%, and 46.4%, respectively. In comparison with patients with neuromuscular disease, patients with respiratory disease (both tracheostomized and non-tracheostomized) tended to show a lower continuation ratio, but the difference was not statistically significant. These data were comparable to those of previous reports, suggesting that home respiratory care in Aichi Prefecture satisfied the normal standards of quality.
Subject(s)
Home Care Services , Intermittent Positive-Pressure Ventilation , Neuromuscular Diseases/therapy , Respiratory Tract Diseases/therapy , Adolescent , Adult , Aged , Child , Child, Preschool , Female , Humans , Infant , Intermittent Positive-Pressure Ventilation/methods , Intermittent Positive-Pressure Ventilation/standards , Intermittent Positive-Pressure Ventilation/statistics & numerical data , Japan/epidemiology , Male , Middle Aged , Prognosis , Prospective Studies , Time Factors , Tracheotomy/statistics & numerical dataABSTRACT
The upper airway narrowing and changes in head posture and their relationship with apnea severity in patients with obstructive sleep apnea (OSA) were investigated. In 86 male OSA patients and 37 healthy men, one-night polysomnographic examination was performed and a lateral cephalogram by digital image processing system was taken in each subject. Fifteen variables concerning the upper airway dimensions, area and head postures were measured by using a computer software (NIH Image). The results showed that upper airway dimensions in the OSA group at all levels were significantly smaller than those in the control group and the results hold true when the age and body mass index were well controlled in these two groups. Significant forward inclination of the cervical column was found in the patients with an apnea index (AI) greater than 35episodes/h. And changes in the head posture variables in the whole study group were significantly correlated with AI and airway dimensions at various levels. It was suggested that there exist significant and extensive upper airway narrowing in OSA patients even in upright position and awake state; And as the apnea severity progresses, patients may assume certain compensatory head postures in an attempt to maintain an adequate airway patency.
ABSTRACT
The upper airway narrowing and changes in head posture and their relationship with apnea severity in patients with obstructive sleep apnea (OSA) were investigated. In 86 male OSA patients and 37 healthy men, one-night polysomnographic examination was performed and a lateral cephalogram by digital image processing system was taken in each subject. Fifteen variables concerning the upper airway dimensions, area and head postures were measured by using a computer software (NIH Image). The results showed that upper airway dimensions in the OSA group at all levels were significantly smaller than those in the control group and the results hold true when the age and body mass index were well controlled in these two groups. Significant forward inclination of the cervical column was found in the patients with an apnea index (AI) greater than 35episodes/h. And changes in the head posture variables in the whole study group were significantly correlated with AI and airway dimensions at various levels. It was suggested that there exist significant and extensive upper airway narrowing in OSA patients even in upright position and awake state; And as the apnea severity progresses, patients may assume certain compensatory head postures in an attempt to maintain an adequate airway patency.
