Sleep pattern alterations and brief airway obstructions in overweight infants
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A Kahn1, M J Mozin, E Rebuffat
1Pediatric Sleep Unit, University Children's Hospital, Brussels, Belgium.
Insights
Overweight infants exhibit altered sleep patterns, including reduced deep sleep and increased indeterminate sleep. They also experience more gross body movements, sleep stage shifts, and brief airway obstructions compared to healthy-weight infants.
Area of Science:
- Pediatric Sleep Medicine
- Infant Health
- Obesity Research
Background:
- Infant obesity is a growing concern with potential health implications.
- Sleep disturbances are common in various pediatric populations.
- Polysomnography is a standard tool for objective sleep assessment.
Purpose of the Study:
- To investigate polysomnographic sleep characteristics in overweight infants.
- To compare sleep patterns and respiratory events between overweight and control infants.
- To identify potential sleep-related risk factors associated with infant overweight.
Main Methods:
- Polysomnography was used to monitor sleep in 10 overweight infants and 10 matched controls.
- Infants were classified as overweight if weight exceeded 120% of ideal for height/age.
- Sleep stages, body movements, sleep stage shifts, and airway obstructions were analyzed.
Main Results:
- Overweight infants spent less time in NREM sleep stages 3-4 and more in indeterminate sleep.
- Significantly more gross body movements and sleep stage shifts were observed in the overweight group.
- Brief airway obstructions were more frequent in overweight infants, occurring during NREM and REM sleep.
Conclusions:
- Overweight infants demonstrate distinct polysomnographic sleep alterations compared to healthy-weight peers.
- Increased airway obstructions suggest a potential link between infant overweight and sleep-disordered breathing.
- These findings highlight the importance of monitoring sleep in overweight infants.
Abstract:
The sleep characteristics of 10 overweight infants were monitored polysomnographically and compared with those of 10 age- and sex-matched control infants with no weight excess. The infants were selected from a well-babies clinic. Infants were assigned to the weight excess group if their weight was greater than 120% of ideal weight/height for age. There were six boys and four girls in both groups, with a median age of 23.5 weeks in the weight excess group and 22.0 weeks in the control group. The infants with weight excess spent significantly less time sleeping in non-rapid-eye-movement (NREM) sleep stage 3-4 and more time in indeterminate sleep than their matched controls. The infants with weight excess had also significantly more gross body movements and more sleep stage shifts than the control infants. Brief airway obstructions were found significantly more frequently in the weight excess group than in the control group. Seven overweight infants showed a total of 74 brief airway obstructions; 41 occurred in NREM sleep stage 1 or 2 and 14 in rapid-eye-movement (REM) sleep. The median duration of the obstructive episodes was 8 s (range 3-13 s). Of the 10 control subjects, only 2 had one obstructive episode each, lasting 3 and 4 s and occurring during REM sleep. Only one mixed apnea of 6.5 s was recorded in a 39-week-old overweight boy. The obstructive episodes were accompanied by a median fall in heart rate of 9% (range 0-51%) and by a median fall in oxygen saturation of 0.9% (range 0-10%).(ABSTRACT TRUNCATED AT 250 WORDS)