For example, the fourth generation of cephalosporins is not recognized as such in Japan. In Japan, cefaclor is classed as a first-generation cephalosporin, though in the United States it is a second-generation one; and cefbuperazone, cefminox, and cefotetan are classed as second-generation cephalosporins. Cefmetazole and cefoxitin are classed as third-generation cephems.
The sleep charts that you see in parenting books and websites are based on how much time parentsâtypically, Western parentsâsay their babies spend sleeping. For instance, studies of Australian babies reveal that the average newborn gets about 16-17 hours of sleep over a 24-hour period.f course, not all of this sleep time occurred at night. One-month-old babies slept an average of 8 hours each night, with 96% of babies getting between 6 and 13.3 hours of nighttime sleep. At 3 months, babies spent more time sleeping at nightâ-10 hours, on average.
Newborns should get 14 to 17 hours of sleep over a 24-hour period, says the National Sleep Foundation. Some newborns may sleep up to 18 to 19 hours a day. Newborns wake every couple of hours to eat. Breastfed babies feed often, about 8 to 12 times a day. Bottle-fed babies tend to feed less often, about every 3 to 4 hours. Newborns who sleep for longer stretches should be awakened to feed. Wake your baby every 3 to 4 hours to eat until he or she shows good weight gain, which usually happens within the first couple of weeks. After that, it's OK to let your baby sleep for longer periods of time at night. The first months of a baby's life can be the hardest for parents, who might get up many times at night to tend to the baby. Each baby has a different sleep pattern. Some start to sleep through the night (for 5-6 hours at a time) by 2 to 3 months of age, but some don't. How Should Babies Sleep? During the first weeks of a baby's life, some parents choose to room-share.