Unusually Low Oxyhemoglobin Saturation on Polysomnography
نویسندگان
چکیده
منابع مشابه
During Hypothermic Cardiopulmonary Bypass-Correlation with Oxyhemoglobin Saturation
In 8 adult patients undergoing cardiopulmonary bypass, the perfusion flow was altered from 2.4 to 1.8 and 1.2 L/min/m during hypothermia (26.5 ± 2.3°C). Following rewarming of the patients to 37°C, the perfusion flow was also altered from 2.4 to 1.8 and 1.2 L/min/m • The resulting mixed venous oxyhemoglobin saturation (Sv0 2 ) was measured in vivo by in-line oximetry at the actual body temperat...
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STUDY OBJECTIVES Physiological adaptation to high altitude hypoxia may be impaired in Andeans with significant European ancestry. The respiratory 'burden' of sleep may challenge adaptation, leading to relative nocturnal hypoxia. Developmental aspects of sleep-related breathing in high-altitude native children have not previously been reported. We aimed to determine the influence of development ...
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To determine the thermoregulatory effects of propofol and nitrous oxide, we measured the threshold for peripheral vasoconstriction in seven volunteers over a total of 13 study days. We also evaluated the effect of vasoconstriction on oxyhemoglobin saturation (SpO2). Anesthesia was induced with an intravenous bolus dose of propofol (2 mg/kg), followed by an infusion of 180 micrograms.kg-1 x min-...
متن کاملThe rate of fall of arterial oxyhemoglobin saturation in obstructive sleep apnea.
During breath holding, correlations have been demonstrated between the rate of fall of arterial oxyhemoglobin saturation (dSaO2/dt) and the following: thoracic gas volume at apnea onset, resting oxygen consumption, preapneic arterial oxyhemoglobin saturation (SaO2) and obesity. A key factor influencing dSaO2/dt is mixed venous oxyhemoglobin saturation (SvO2) as recently demonstrated in an anima...
متن کاملKinetics of changes in oxyhemoglobin saturation during walking and cycling tests in COPD.
BACKGROUND The patterns and kinetics of changes in SpO2 in the 6-min walk test (6MWT) and cycling test have not been addressed in patients with COPD. METHODS We studied 60 COPD subjects, with a mean ± SD FEV1 of 54 ± 18% of predicted. We compared the changes in SpO2 (ΔSpO2) within and between the 2 tests, and the differences between the desaturators and non-desaturators. RESULTS In the 6MWT...
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ژورنال
عنوان ژورنال: Journal of Clinical Sleep Medicine
سال: 2017
ISSN: 1550-9389,1550-9397
DOI: 10.5664/jcsm.6562