Infant double birth weight

Average Newborn Weight - American Pregnancy Association

It seems some of the most common questions parents hear from the moment a new baby arrives is “what does the baby weigh?” and “how is the baby growing?” The weight of a newborn is often used as a marker of general health, so it makes sense that it is something everyone is monitoring. But how does a parent know if their child is gaining weight at a healthy rate?
There are some general guidelines parents can look at to help keep an eye on their baby’s progress.

How to Monitor Your Baby’s Growth

Most babies who are born full-term (38-40 weeks gestation) weigh between 6-9 lbs. Birth weight can be affected by many factors, such as pregnancy gestation at birth ( whether earlier or later than “full term”), baby’s gender, mother’s health during the pregnancy, parents’ build, nutrition during pregnancy, multiples birth, or baby’s health at birth.
Babies can be born outside of the average guidelines and still be completely healthy. It is expected that newborns will lose some weight in the first 5-7 days of life. A 5% weight loss is considered normal for a formula-fed newborn. A 7-10% loss is considered normal for breastfed babies.
Most babies should regain this lost weight by days 10-14 of life. If a baby loses a significant amount of weight, is sick, or is premature, it may take up to 3 weeks to get back to his or her birth weight.

Formula-Fed and Breastfed Differences

Most newborns will gain about 5-7 oz a week for the first few months. Many babies will have doubled their birth weight by about 3-4 months. At 4 months, weight gain will begin to look different for breastfed and formula-fed babies. Research clearly shows that breastfed babies and formula-fed babies grow at different rates starting at about 4 months of age.
However, most growth charts are based only on formula-fed babies’ growth, which leads many breastfeeding moms wondering if their baby is “normal.” The World Health Organization (WHO) has worked to develop new growth charts based on breastfed babies, but not all physicians are using these when making their assessment.
Make sure your physician is clear on what feeding method you are using so the correct chart is used to assess your baby’s weight gain. For more information, see the WHO Growth Charts for Infant Boys and the WHO Growth Charts for Infant Girls.

Your Newborn’s Weight Gain

Newborns are often weighed throughout their stay in the hospital and sometimes again 48-72 hours after discharge. Newborns are then weighed a week after birth and sometimes again at two weeks after birth. If a baby has any health concerns, weight checks may be scheduled more frequently.
If parents don’t have a scale at home, they can monitor their baby’s intake of food in other ways:

After the first week, a newborn should be having at least 5-7 wet diapers a day and at least about 3-4 dirty diapers a day. (This may change with time, and formula-fed babies seem to have fewer bowel movements than breastfed babies.)
You can also monitor your baby’s intake by noticing if your baby seems satisfied at least for a little while after feeding. (Keep in mind that some babies do seem to want to eat all the time!)

If you have any questions or concerns regarding your baby’s weight gain, don’t hesitate to ask your health care provider.
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Compiled using information from the following sources:
The Nemours Foundation, https://kidshealth. org/
World Health Organization, https://www.who.int/
KellyMom Breastfeeding and Parenting, https://www.kellymom.com/
Ask Dr. Sears.com, https://www.askdrsears.com/

Birthweight doubling time: a fresh look

. 1976 Apr;57(4):469-73.

C G Neumann, M Alpaugh

PMID: 1264541

C G Neumann et al. Pediatrics. 1976 Apr.

. 1976 Apr;57(4):469-73.

Authors

C G Neumann, M Alpaugh

PMID: 1264541

Abstract

Infant birthweight doubling time is widely quoted as being achieved between 5 and 6 months. The purpose of this study was to determine the time of birthweight doubling and to identify important related variables. A total of 357 normal infants with birthweights between 2,500 and 4,100 gm were studied. Mean age of birthweight doubling for the entire group was 119 days (3.8 months). Bottle-fed infants doubled their birthweights earlier than breast-fed infants: 113 days vs. 124 days (P less than .05). Boys doubled their birthweights earlier than girls: 111 days vs. 129 days (P less than .0001). Solids were introduced earlier in bottle-fed infants (mean , 1.9 months) than in breast-fed infants (mean, 3.9 months). Harvard percentiles for mean group weight and length at the time of birthweight doubling were: for bottle-fed infants, 75th and 55th percentiles respectively: for breast-fed infants, 55th and 60th percentiles respectively; for boys, 75th percentile for both weight and length; for girls, 50th percentile for both weight and length. Thus, bottle-fed infants appear to have weight gains in excess of length gain and may be developing early obesity. In light of the poor prognosis in treating obesity, closer supervision of early infant feeding practices is indicated.

Cited by

Predictors of Infant Feeding Frequency by Mexican Immigrant Mothers.
Worobey J, Lopez MI, Hoffman DJ. Worobey J, et al. Top Clin Nutr. 2008 Oct 1;23(4):333-339. doi: 10.1097/01.TIN.0000341345.50589.45. Top Clin Nutr. 2008. PMID: 19584950 Free PMC article.
Maternal perception of body size as a determinant of infant adiposity in an African-American community.
Boyington JA, Johnson AA. Boyington JA, et al. J Natl Med Assoc. 2004 Mar;96(3):351-62. J Natl Med Assoc. 2004. PMID: 15040517 Free PMC article.
Infant feeding practices in Ottawa-Carleton: the introduction of solid foods.
Kwavnick BS, Reid DJ, Joffres MR, Guernsey JR. Kwavnick BS, et al. Can J Public Health. 1999 Nov-Dec;90(6):403-7. doi: 10.1007/BF03404146. Can J Public Health. 1999. PMID: 10680267 Free PMC article.
Percentile growth charts for Punjabi infants.
Kumar V, Bhalla AK. Kumar V, et al. Indian J Pediatr. 1988 Sep-Oct;55(5):773-82. doi: 10.1007/BF02734302. Indian J Pediatr. 1988. PMID: 3246385 No abstract available.
Solute and calorie loading in young infants: short- and long-term effects.
Taitz LS. Taitz LS. Arch Dis Child. 1978 Sep;53(9):697-700. doi: 10.1136/adc.53.9.697. Arch Dis Child. 1978. PMID: 363062 Free PMC article. Review. No abstract available.

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Girls with one body and two faces were born in an Australian family

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May 13, 2014, 03:12 pm Science

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In a large Australian family, girls were born who have one body, two brains and two faces for two. This is diprosopus, the rarest case of Siamese twins.

Extraordinary twins were born on May 8 to Australian Renee Young. Newborn girls, Hope and Faith, have one body, one set of internal organs, share arms and legs and one head, but each has its own brain and its own face, is reported by the Australian newspaper Sydney Morning Herald .

This is a very rare case of twin fusion (Siamese twins), which is called a diprosopus, or craniofacial duplication.

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Twins were born at the 32nd week of pregnancy in a hospital in Blacktown, the doctors performed a caesarean section on the woman. Their total weight at birth is more than two kilograms. The heart is working normally, and in the brain of each of the girls there are also no abnormalities. nine0003

Renee Yang and her life partner Simon Hovey learned of this unusual pathology during an ultrasound scan performed at 19 weeks of pregnancy. Despite the initial shock they experienced, the couple decided to continue with the pregnancy. Although the doctors dissuaded them from this, convincing them that the born child would be a "freak" for society.

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Parents now say they don't regret their decision. “Although our girls have only one body, they have two faces and we call them differently. These are our girls and we love them,” Hovey said. nine0003

The twins are now at the Children's Hospital in Westamd, a suburb of Sydney, and are doing well, breathing and eating.

Although doctors warned the couple that the twins might have difficulty breathing at birth. According to the father, they are already being bathed. “We are not going to stay in the hospital for a long time,” says Simon Hovey. “We want to bring them home healthy and happy so that our family can become even a little bit bigger.”

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Identical twins are produced when a fertilized egg divides and gives rise to two embryos. Siamese twins are formed when the egg divides very late - 14-15 days after fertilization.

By this time, the cells are already specialized, so that complete separation of the embryos becomes impossible.

About half of Siamese twins are stillborn, and babies survive in 5-25% of cases. Interestingly, in 70-75% of cases, Siamese twins are girls. nine0003

Diprosopus is one of the rarest types of Siamese twins. Scientists know that this pathology is associated with abnormal activity of the SHH protein. Increased activity of the protein leads to the growth of facial features, and sometimes to their duplication. Typically, these newborns do not survive.

This is only the 35th recorded case of twins born with diprosop in the world. But of all those born so far, there have been no survivors.

In 2008, a girl was born in India who had two noses, two pairs of eyes and two mouths, but only one pair of ears. The girl lived two months after birth and died of a heart attack. nine0003

Incredibly, Renee Young and Simon Hovey already have seven children. Moreover, they live on welfare in a council house in the suburbs of Sydney. Renee Yang receives a disability pension as she suffers from severe rheumatoid arthritis. This family is focused on children, and it is normal for them to have twins in the family, despite their unusualness. Parents say they would do the same if they had a child with Down syndrome.

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