The prone or side sleep
position can increase the risk of rebreathing expired gases, resulting in hypercapnia and hypoxia.54, — , 57 The prone
position also increases the risk of overheating by decreasing the rate of heat loss and increasing body temperature compared with infants sleeping supine.58, 59 Recent evidence suggests that prone sleeping alters the autonomic control of the infant cardiovascular system during sleep, particularly at 2 to 3 months of age, 60 and can result in decreased cerebral oxygenation.61 The prone
position places infants at high risk of SIDS (odds ratio [OR]: 2.3 — 13.1).62, — , 66 However, recent studies have demonstrated that the SIDS risks associated with side and prone
position are similar in magnitude (OR: 2.0 and 2.6, respectively) 63 and that the population - attributable risk reported for side sleep
position is higher than that for prone
position.65, 67 Furthermore, the risk of SIDS is exceptionally high for infants who are placed on their side and found on their stomach (OR: 8.7).63 The side sleep
position is inherently unstable, and the probability of an infant rolling to the prone
position from the side sleep
position is
significantly greater than rolling prone from the back.65, 68 Infants who are unaccustomed to the prone
position and are placed prone for sleep are also at
greater risk than those usually placed prone (adjusted OR: 8.7 — 45.4).63, 69,70 Therefore, it is critically important that every caregiver use the supine sleep
position for every sleep period.
Position in the water — submerged versus at the surface — also
significantly affected prey - capture success, with two-fold
greater capture rate when submerged while attacking prey.
Washington Post education columnist Jay Mathews echoes Loveless»
position, explaining in his blog that while he has «interviewed hundreds of teachers who
significantly raised student achievement... [n] ot one has ever said it was because of
great state learning standards.»
When I talk with clients in this sort of
position, they're often looking to break into a role with larger scope,
greater responsibility,
greater appreciation - and often,
significantly better pay.