Faculty Opinions recommendation of MafB deficiency causes defective respiratory rhythmogenesis and fatal central apnea at birth.

Author(s):  
Jack Feldman
2003 ◽  
Vol 6 (10) ◽  
pp. 1091-1100 ◽  
Author(s):  
Bruno Blanchi ◽  
Louise M Kelly ◽  
Jean-Charles Viemari ◽  
Isabelle Lafon ◽  
Henri Burnet ◽  
...  

2020 ◽  
Vol 129 (6) ◽  
pp. 1441-1450
Author(s):  
Ruchi Rastogi ◽  
M. S. Badr ◽  
A. Ahmed ◽  
S. Chowdhuri

This study demonstrates for the first time in elderly adults without heart disease that intervention with supplemental oxygen in the clinical range will ameliorate central apneas and hypopneas by decreasing the propensity to central apnea through decreased chemoreflex sensitivity, even in the absence of a reduction in the plant gain. Thus, the study provides physiological evidence for use of supplemental oxygen as therapy for mild-to-moderate SDB in this vulnerable population.


1995 ◽  
Vol 126 (6) ◽  
pp. 979-982 ◽  
Author(s):  
Virender K. Rehan ◽  
Ruben E. Alvaro ◽  
Jaques Belik ◽  
Doug W. Allen ◽  
Kim Kwiatkowski ◽  
...  

1998 ◽  
Vol 84 (4) ◽  
pp. 1374-1380 ◽  
Author(s):  
Christopher A. Richard ◽  
Sarah S. Mosko ◽  
James J. McKenna

Mother-infant bed sharing, compared with the solitary sleeping condition, has recently been associated with several physiological and behavioral effects. Because the physiological effects of bed sharing may also include respiratory changes, we compared the incidence of central and obstructive apneas and periodic breathing in bed-sharing and solitary sleeping infants. Twenty routinely bed-sharing mother-infant pairs and fifteen routinely solitary sleeping pairs slept for 3 nights in a sleep laboratory. After an initial adaptation night, each pair spent 1 night bed sharing and 1 night in solitary sleep in random order. Apnea and periodic breathing were scored from polysomnographic recordings. The frequency of central apnea was significantly increased on the bed-sharing night, compared with the solitary night, regardless of routine sleeping arrangement. There were significantly fewer obstructive apneas on the bed-sharing night than on the solitary night, but only in routinely solitary sleeping infants. In both groups, there was a significantly higher frequency of periodic breathing events on the bed-sharing night than on the solitary night. These findings demonstrate that the bed-sharing environment can have a significant impact on respiratory control in the infant. Evidence is also presented to suggest that routine bed sharing may result in subtle neurophysiological and/or developmental differences in infants.


1995 ◽  
Vol 78 (1) ◽  
pp. 247-257 ◽  
Author(s):  
P. J. Ohtake ◽  
H. V. Forster ◽  
L. G. Pan ◽  
T. F. Lowry ◽  
M. J. Korducki ◽  
...  

The ventrolateral medulla (VLM) has been reported to be important as a source of tonic facilitation of dorsal respiratory neurons and as a site critical for respiratory rhythmogenesis. We investigated these theories in awake and anesthetized goats (n = 13) by using chronically implanted thermodes to create reversible neuronal dysfunction at superficial VLM sites between the first hypoglossal rootlet and the pontomedullary junction (area M (rostral) and area S). During halothane anesthesia (arterial PCO2 = 57.4 +/- 4.5 Torr), bilateral cooling (thermode temperature = 20 degrees C) of 60–100% of areas M and S for 30 s produced a sustained apnea (46 +/- 4 s) that lasted beyond the period of cooling. While the animals were awake (arterial PCO2 = 36.0 +/- 1.9 Torr), cooling the identical region in the same goats resulted in a decrease (approximately 50%) in pulmonary ventilation, with a brief apnea seen only in one goat. Reductions in both tidal volume and frequency were observed. Qualitatively similar responses were obtained when cooling caudal area M-rostral area S and rostral area M, but the responses were less pronounced. Minimal effects were seen in response to cooling caudal area S. During anesthesia, breathing is critically dependent on superficial VLM neurons, whereas in the awake state these neurons are not essential for the maintenance of respiratory rhythm. Our data are consistent with these superficial VLM neuronal regions providing tonic facilitation to more dorsal respiratory neurons in both the anesthetized and awake states.


2018 ◽  
Vol 124 (1) ◽  
pp. 83-90 ◽  
Author(s):  
Susmita Chowdhuri ◽  
Sukanya Pranathiageswaran ◽  
Hillary Loomis-King ◽  
Anan Salloum ◽  
M. Safwan Badr

The reason for increased sleep-disordered breathing with predominance of central apneas in the elderly is unknown. We hypothesized that the propensity to central apneas is increased in older adults, manifested by a reduced carbon-dioxide (CO2) reserve in older compared with young adults during non-rapid eye movement sleep. Ten elderly and 15 young healthy adults underwent multiple brief trials of nasal noninvasive positive pressure ventilation during stable NREM sleep. Cessation of mechanical ventilation (MV) resulted in hypocapnic central apnea or hypopnea. The CO2 reserve was defined as the difference in end-tidal CO2 ([Formula: see text]) between eupnea and the apneic threshold, where the apneic threshold was [Formula: see text] that demarcated the central apnea closest to the eupneic [Formula: see text]. For each MV trial, the hypocapnic ventilatory response (controller gain) was measured as the change in minute ventilation (V̇e) during the MV trial for a corresponding change in [Formula: see text]. The eupneic [Formula: see text] was significantly lower in elderly vs. young adults. Compared with young adults, the elderly had a significantly reduced CO2 reserve (−2.6 ± 0.4 vs. −4.1 ± 0.4 mmHg, P = 0.01) and a higher controller gain (2.3 ± 0.2 vs. 1.4 ± 0.2 l·min−1·mmHg−1, P = 0.007), indicating increased chemoresponsiveness in the elderly. Thus elderly adults are more prone to hypocapnic central apneas owing to increased hypocapnic chemoresponsiveness during NREM sleep. NEW & NOTEWORTHY The study describes an original finding where healthy older adults compared with healthy young adults demonstrated increased breathing instability during non-rapid eye movement sleep, as suggested by a smaller carbon dioxide reserve and a higher controller gain. The findings may explain the increased propensity for central apneas in elderly adults during sleep and potentially guide the development of pathophysiology-defined personalized therapies for sleep apnea in the elderly.


2015 ◽  
pp. 149-151
Author(s):  
Richard B. Berry ◽  
Mary H. Wagner
Keyword(s):  

2015 ◽  
pp. 134-137
Author(s):  
Richard B. Berry ◽  
Mary H. Wagner
Keyword(s):  

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