Nocturnal oximetry: utility in the respiratory management of XXXX .

@entity1 @entity387 @entity26 @entity519 @entity746
OBJECTIVE: Current recommendations are to institute nocturnal nasal ventilation for @entity746 @entity1 with a forced vital capacity (FVC) of <50% of predicted normal. The purpose of this study was to determine whether this is appropriate. DESIGN: A total of 87 nocturnal oximetry evaluations were performed on 78 consecutive @entity746 @entity1 symptomatic for @entity387 . Nocturnal oximetry measurements were compared for those with FVC >50% vs. those with FVC of <50% of normal. FVC was measured sitting and supine. RESULTS: A considerable number of these symptomatic @entity1 manifested evidence of @entity519 as measured by oximetry. However, there was no significant difference between @entity1 with sitting percentage-predicted FVC above and below 50% predicted in minimum @entity26 saturation, mean @entity26 saturation, percentage of time spent with @entity26 saturation of <88%, and number of events per hour. There was no significant difference between @entity1 with supine percentage-predicted FVC above and below 50% predicted in minimum @entity26 saturation, mean @entity26 saturation, percentage of time spent with @entity26 saturation of <88%, and number of events per hour. CONCLUSION: The recommendation that FVC be <50% of normal is inappropriate for justifying introduction of nocturnal nasal ventilation. Many @entity1 are symptomatic at higher FVC and manifest evidence of @entity519 . Nocturnal oximetry adds additional practical information for justifying earlier respiratory intervention for symptomatic @entity1 .
