Thermal insulation and SIDS—an investigation of selected ‘Eastern’ and ‘Western’ infant bedding combinations

Wilson, Cheryl A.; Chu, Mi Seon

doi:10.1016/j.earlhumdev.2005.05.003

Cited by 11 publications

(8 citation statements)

References 33 publications

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“…Overheating of infants due to excessive bedding and clothing and its relevance to SIDS has been widely studied (Baddock et al 2004;Fleming et al 1990;Nelson et al 1989;Ponsonby et al 1992;Watson et al 1998;WigWeld et al 1993;Wilson and Chu 2005;Wilson et al 1994), but hardly any studies mention the association between SIDS and too little thermal insulation (Williams et al 1996). Little is known about the associations between climatic factors and child health (review of Bunyavanich et al 2003).…”

Section: Discussionmentioning

confidence: 98%

“…The size of the manikin was identical with the study infants and the clothes were well-Wtted, strengthening the reliability of the study (Kuklane et al 2004). However, there are number of factors, that could not be taken into consideration in the evaluation of clothing insulation, such as variation in how well the clothes Wt diVerent infants, diVerent kinds of prams or whether the covers were tightly or loosely placed over the infant, the reduction in insulation of clothes that have been washed or wetted a lot as well as body movements (ISO 9920, 2007) and sleep posture (Wilson and Chu 2005).…”

Section: Limitationsmentioning

confidence: 98%

“…Infants in Japan and Korea have been described to sleep in bedding combinations of greater insulation than infants in New Zealand in comparable season indoors (Wilson and Chu 2005). Traditional outdoor infant care practices, for example swaddling and living in traditional tents called "Ger" in the Mongolian winter (Tsogt et al 2006) as well as using the form of dressing called "manta pouch" in Peru (Tronick et al 1994), have been described as protecting the infant from the cold.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the thermal insulation of clothing of infants sleeping outdoors in Northern winter

et al. 2010

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It is a common practice in Northern countries that children aged about 2 weeks to 2 years take their daytime sleep outdoors in prams in winter. The aim was to evaluate the thermal insulation of clothing of infants sleeping outdoors in winter. Clothing data of infants aged 3.5 months was collected, and sleep duration, skin and microclimate temperatures, humidity inside middle wear, air temperature and velocity of the outdoor environment were recorded during sleep taken outdoors (n = 34) and indoors (n = 33) in families' homes. The insulation of clothing ensembles was measured by using a baby-size thermal manikin, and the values were used for defining clothing insulation of the observed infants. Required clothing insulation for each condition was estimated according to ISO 11079. Clothing insulation did not correlate with ambient air temperature. The observed and required insulation of the study group was equal at about -5 °C, but overdressing existed in warmer and deficiency in thermal insulation in colder temperatures (r (s) 0.739, p< 0.001). However, even at -5 °C a slow cooling (ca. 0.012 °C/min) of mean skin temperature (T (sk)) was observed. When the difference between observed and required insulation increased, the cooling rate of T (sk) increased linearly (r (s) 0.605, p < 0.001) and the infants slept for a shorter period (r (s) 0.524, p = 0.001). The results of this study show the difficulty of adjusting systematically the optimal thermal insulation for outdoor sleeping infants during northern winter. Therefore, the necessity for guidelines is obvious. The study provides information for adequate cold protection of infants sleeping in cold conditions.

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Section: Discussionmentioning

confidence: 98%

Section: Limitationsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Evaluation of the thermal insulation of clothing of infants sleeping outdoors in Northern winter

et al. 2010

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“…The greater deformability of the sleep surface of the PurFlo® mattress than the conventional mattress allowed a greater proportion of the infant's surface area (notably on the back and sides) to be in direct contact with the sleeping bag, thus reducing the size of the potentially large lateral air pockets beside the baby sleeping on a firm surface. Kerslake (24) and Wilson (25) have shown that if bedding is more closely applied to the shape of the baby, with smaller lateral air pockets, there is a reduction in convective heat loss, thus increasing overall effective thermal insulation. Wilson's three‐dimensional mathematical model of thermal balance of sleeping infants would support this suggestion (29,30).…”

Section: Discussionmentioning

confidence: 99%

“…The values for total energy expenditure expressed as Watts per square meter of body surface area (14,17,23,25,25), under conditions of thermal neutrality at all three ages, in QS and REM sleep, for infants sleeping on the conventional mattress are shown in Figures 2a and b.…”

Section: Metabolic Rate Measurementsmentioning

confidence: 99%

Is the mattress important in helping babies keep warm?—Paradoxical effects of a sleeping surface with negligible thermal resistance

et al. 2006

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Background: Heavy wrapping and head covering are risk factors for Sudden Infant Death Syndrome. A new mattress construction, PurFlo®, has extremely low thermal resistance, and when used with an infant sleeping bag minimizes the risk of head covering. Aim: To investigate the thermal balance and metabolic rate of infants sleeping on a conventional mattress or a Purflo® mattress in infant sleeping bags. Methods: A longitudinal study of thermal balance of infants during day‐time sleep on both mattress types in thermoneutral and cool conditions at ages 3 weeks (n = 24), 3 months (n = 22) and 5 months (n = 18). Results: In thermoneutral conditions axillary temperatures in quiet sleep were lower on the conventional mattress than on the PurFlo® mattress (p < 0.05, Wilcoxon test). On lowering room temperature to 15–16°C axillary temperatures fell, particularly in the older babies, and at each age were lower on the conventional mattress than the Purflo® (differences 0.14–0.72°C, p < 0.05, Wilcoxon test). Conclusion: In both thermoneutral and cool conditions, infant temperatures were higher on the PurFlo® than the conventional mattress. The more deformable surface of the PurFlo® mattress may lead to more effective insulation by the sleeping bag despite a lack of mattress insulation.

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Wearable Sensors and Smart Clothing: Trends and Potentials for Research

Pai¹,

Mukhopadyay²,

Abbas³

2023

Lecture Notes in Electrical Engineering

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Thermal insulation and SIDS—an investigation of selected ‘Eastern’ and ‘Western’ infant bedding combinations

Cited by 11 publications

References 33 publications

Evaluation of the thermal insulation of clothing of infants sleeping outdoors in Northern winter

Evaluation of the thermal insulation of clothing of infants sleeping outdoors in Northern winter

Is the mattress important in helping babies keep warm?—Paradoxical effects of a sleeping surface with negligible thermal resistance

Wearable Sensors and Smart Clothing: Trends and Potentials for Research

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