Effect of transnasal insufflation on sleep disordered breathing in acute stroke: a preliminary study
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Background and Purpose
Sleep disordered breathing (SDB) is frequent in acute stroke patients and is associated with early neurologic worsening and poor outcome. Although continuous positive airway pressure (CPAP) effectively treats SDB, compliance is low. The objective of the present study was to assess the tolerance and the efficacy of a continuous high-flow-rate air administered through an open nasal cannula (transnasal insufflation, TNI), a less-intrusive method, to treat SDB in acute stroke patients.
Ten patients (age, 56.8 ± 10.7 years), with SDB ranging from moderate to severe (apnea–hypopnea index, AHI, >15/h of sleep) and on a standard sleep study at a mean of 4.8 ± 3.7 days after ischemic stroke (range, 1–15 days), were selected. The night after, they underwent a second sleep study while receiving TNI (18 L/min).
TNI was well tolerated by all patients. For the entire group, TNI decreased the AHI from 40.4 ± 25.7 to 30.8 ± 25.7/h (p = 0.001) and the oxygen desaturation index >3% from 40.7 ± 28.4 to 31 ± 22.5/h (p = 0.02). All participants except one showed a decrease in AHI. The percentage of slow-wave sleep significantly increased with TNI from 16.7 ± 8.2% to 22.3 ± 7.4% (p = 0.01). There was also a trend toward a reduction in markers of sleep disruption (number of awakenings, arousal index).
TNI improves SDB indices, and possibly sleep parameters, in stroke patients. Although these changes are modest, our findings suggest that TNI is a viable treatment alternative to CPAP in patients with SDB in the acute phase of ischemic stroke.
KeywordsTransnasal insufflation Stroke Sleep disordered breathing
Sleep disordered breathing
Continuous positive airway pressure
Cerebral blood flow velocity
Baseline diagnostic night
Respiratory effort-related arousals
Respiratory disturbance index
Oxygen desaturation indexes
National Institutes of Health Stroke Scale
Obstructive Apnea Index
Central Apnea Index
Mixed Apnea Index
The authors thank Pr Hartmut Schneider for his helpful comments.
This is not an industry-supported study. The authors have no financial conflicts of interest.
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