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Perl O, Kemer L, Green A, Arish N, Corcos Y, Arzi A, Dagan Y. Respiration-triggered olfactory stimulation reduces obstructive sleep apnea severity: A prospective pilot study. J Sleep Res 2024:e14236. [PMID: 38740050 DOI: 10.1111/jsr.14236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 04/27/2024] [Accepted: 04/29/2024] [Indexed: 05/16/2024]
Abstract
Obstructive sleep apnea is a prevalent sleep-disordered breathing condition characterized by repetitive reduction in breathing during sleep. The current care standard for obstructive sleep apnea is continuous positive air pressure devices, often suffering from low tolerance due to limited adherence. Capitalizing on the unique neurocircuitry of olfactory perception and its retained function during sleep, we conducted a pilot study to test transient, respiration-based olfactory stimulation as a treatment for obstructive sleep apnea markers. Thirty-two patients with obstructive sleep apnea (apnea-hypopnea index ≥ 15 events per hr) underwent two polysomnography sessions, "Odour" and "Control", in random order. In "Odour" nights, patients were presented with transient respiratory-based olfactory stimulation delivered via a computer-controlled commercial olfactometer (Scentific). The olfactometer, equipped with a wireless monitoring, analysed respiratory patterns and presented odour upon detection of respiratory events. No odours were presented in "Control" nights. Following exclusions, 17 patients entered the analysis (four women, 47.4 (10.5) years, body mass index: 29.4 (6.3) kg m-2). We observed that olfactory stimulation during sleep reduced the apnea-hypopnea index ("Odour": 17.2 (20.9), "Control": 28.2 (18.6), z = -3.337, p = 0.000846, BF10 [Bayesian Factor 10]= 57.9), reflecting an average decrease of 31.3% in the number of events. Relatedly, stimulation reduced the oxygen desaturation index by 26.9% ("Odour": 12.5 (15.8), "Control": 25.7 (25.9), z = -3.337, p = 0.000846, BF10 = 9.522). This effect was not linked to the severity of baseline obstructive sleep apnea markers (ρ = -0.042, p = 0.87). Olfactory stimulation did not arouse from sleep or affect sleep structure, measured as time per sleep stage (F1,16 = 0.088, p = 0.77). In conclusion, olfactory stimulation during sleep was effective in reducing the severity of obstructive sleep apnea markers without inducing arousals, and may provide a novel treatment for obstructive sleep apnea, prompting continued research.
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Affiliation(s)
- Ofer Perl
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel
- Appscent Medical, Ra'anana, Israel
| | - Lilach Kemer
- The Sleep and Fatigue Institute, Assuta Medical Center, Tel Aviv, Israel
| | - Amit Green
- The Sleep and Fatigue Institute, Assuta Medical Center, Tel Aviv, Israel
- The Research Institute of Applied Chronobiology, The Academic College of Tel-Hai, Tel Hai, Israel
| | - Nissim Arish
- Pulmonary Institute, Sha'are Zedek Medical Center, Jerusalem, Israel
- The Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | | | - Anat Arzi
- Department of Medical Neurobiology, Institute for Medical Research Israel Canada, Faculty of Medicine, The Hebrew University, Jerusalem, Israel
- Department of Cognitive and Brain Sciences, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Yaron Dagan
- The Sleep and Fatigue Institute, Assuta Medical Center, Tel Aviv, Israel
- The Research Institute of Applied Chronobiology, The Academic College of Tel-Hai, Tel Hai, Israel
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裘 梦, 胡 晓. [Latest Findings on the Suck-Swallow-Breathe Mechanism of Direct Breastfeeding From the Breast to an Infant]. SICHUAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF SICHUAN UNIVERSITY. MEDICAL SCIENCE EDITION 2023; 54:1306-1311. [PMID: 38162076 PMCID: PMC10752769 DOI: 10.12182/20231160503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Indexed: 01/03/2024]
Abstract
A mother's breast milk is the best nourishing food for infants. No only does it provide sufficient nutrition, but it is also well suited to infants' immature digestive function, thus promoting their growth and organ maturation. A 6-month period of breastfeeding can provide infants with the necessary nutrients, energy, and fluids. The best feeding method is direct breastfeeding from the breast to an infant, yet the difficulties involved in breastfeeding should not be overlooked. Approximately 1/3 the mothers who are performing direct breastfeeding from the breast to an infant experience moderate or higher levels of feeding difficulties. Difficulties in direct breastfeeding from the breast to an infant can lead to decreased feeding efficiency, hamper the growth and development of infants, and affect the emotional communication between mothers and infants. At present, many relevant studies have focused on topics such as the mothers' psychology, family and social support, and the immature development of infants. However, little research has been done to investigate suck-swallow-breathe, a physiological mechanism that infants undertake during the process of direct breastfeeding from the breast to an infant. In this paper, we summarized published literature, research parameters, measurement instruments, and physical intervention methods of the suck-swallow-breathe mechanism in infants, aiming to facilitate the early identification of breastfeeding difficulties and the subsequently provision of early intervention measures and to promote the early identification of neurodevelopmental abnormalities and other developmental abnormalities in infants.
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Affiliation(s)
- 梦凡 裘
- 复旦大学护理学院 (上海 200032)School of Nursing, Fudan University, Shanghai 200032, China
- 复旦大学附属儿科医院 (上海 201102)Children's Hospital of Fudan University, Shanghai 201102, China
| | - 晓静 胡
- 复旦大学护理学院 (上海 200032)School of Nursing, Fudan University, Shanghai 200032, China
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