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Titolo:
Cardiac and respiratory activity at arousal from sleep under controlled ventilation conditions
Autore:
Trinder, J; Padula, M; Berlowitz, D; Kleiman, J; Breen, S; Rochford, P; Worsnop, C; Thompson, B; Pierce, R;
Indirizzi:
Univ Melbourne, Dept Psychol, Parkville, Vic 3052, Australia Univ Melbourne Parkville Vic Australia 3052 arkville, Vic 3052, Australia Austin & Repatriat Med Ctr, Dept Resp Med, Sleep Disorders Ctr, Heidelberg, Vic 3084, Australia Austin & Repatriat Med Ctr Heidelberg Vic Australia 3084 3084, Australia
Titolo Testata:
JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 4, volume: 90, anno: 2001,
pagine: 1455 - 1463
SICI:
8750-7587(200104)90:4<1455:CARAAA>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
BLOOD-PRESSURE; AIRWAY-RESISTANCE; ONSET; APNEA; CONSEQUENCES; OSCILLATIONS; HEMODYNAMICS; RESPONSES; HUMANS; STROKE;
Keywords:
sleep onset; waking; waking from sleep; heart rate; blood pressure;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Trinder, J Univ Melbourne, Dept Psychol, Parkville, Vic 3052, Australia Univ Melbourne Parkville Vic Australia 3052 ic 3052, Australia
Citazione:
J. Trinder et al., "Cardiac and respiratory activity at arousal from sleep under controlled ventilation conditions", J APP PHYSL, 90(4), 2001, pp. 1455-1463

Abstract

Arousal from sleep is associated with elevated cardiac and respiratory activity. It is unclear whether this occurs because of homeostatic mechanisms or a reflex activation response associated with arousal. Cardiorespiratory activity was measured during spontaneous arousals from sleep in subjects breathing passively on a ventilator. Under such conditions, homeostatic mechanisms are eliminated. Ventilation, end-tidal Pco(2), mask pressure, diaphragmatic electromyograph, heart rate, and blood pressure were measured in four normal subjects under two conditions: assisted ventilation and a normal ventilation control condition. In the control condition, there was a normal,sleep-related fall in ventilation and rise in end-tidal Pco(2). Subsequently, at an arousal, there was an increase in respiratory and cardiac activity. In the ventilator condition, a vigorous cardiorespiratory response to a spontaneous arousal from sleep remained. These results indicate that sleep-related respiratory stimuli are not necessary for the occurrence of elevated cardiorespiratory activity at an arousal from sleep and are consistent with the hypothesis that such activity is at least in part due to a reflex activation response.

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Documento generato il 03/04/20 alle ore 13:18:06