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Arterial Blood Pressure Response to Transient Arousals From NREM Sleep in Nonapneic Snorers With Sleep Fragmentation FREE TO VIEW

Frédéric Lofaso; Françoise Goldenberg; Marie Pia d'Ortho; André Coste; Alain Harf
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From the Service de Physiologie-Explorations Fonctionnelles, Institut National de la Santé et de la Recherche Médicale, Hôpital Henri Mondor, Créteil, France

1998 by the American College of Chest Physicians

Chest. 1998;113(4):985-991. doi:10.1378/chest.113.4.985
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Study objectives: To assess the hemodynamic effects of graded arousals during nonrapid eye movement (NREM) sleep in patients with partial upper airway obstruction during sleep without obstructive sleep apnea/hypopnea, overnight beat-to-beat BP was recorded in six patients.

Setting: At the end of each nonapneic obstructive event, EEG responses were graded as follows: grade 2, grade 1, and grade 0 were defined as increased high-frequency EEG lasting > 15 s, 3 to 15 s, and no EEG arousals according to the American Sleep Disorders Association, respectively.

Measurements and results: The following were observed during grade 0, 1, and 2 EEG patterns (mean±SD): systolic pressure increased by 7.1±1.5, 11.7±1.9, and 14.2±3.4 (p<0.005), respectively; diastolic pressure increased by 4.6±0.6, 6.7±1.7, and 9.4±3.0 (p<0.005), respectively; heart rate increased by 2.9±0.4, 3.9±2.2, and 8.6±4.6 (p<0.005), respectively.

Conclusions: We conclude that nonapneic-nonhypopneic obstructive events are followed by arterial systemic pressure increases whose magnitude varies with the grade of the arousal.




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