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416 infantometer

Manufactured by Seca
Sourced in Germany, United Kingdom, Jamaica

The Seca 416 Infantometer is a medical device designed for measuring the length of infants and small children. It features a stable base and a sliding measuring rod that allows for precise length measurements.

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25 protocols using 416 infantometer

1

Neonatal Anthropometric Measurements

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After childbirth (T4), the neonates were weighed on a Soehnle Multina Plus electronic baby scale (Soehnle®, Germany). Length (cm) was measured with a Seca® 416 infantometer (Seca®, Hamburg, Germany). In addition, HC (cm), thoracic perimeter - TP (cm), and AC (cm) were measured with a Seca® 201 flexible tape (Seca®, Hamburg, Germany). To ensure accuracy and reproducibility of the measurements, the researchers attended a dedicated training course.
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2

Body Composition Measurement in Infants

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Crown-to-heel length was measured in duplicate using a Seca 416 infantometer (Seca, Hamburg, Germany) with both measures being within 0.1 cm. Nude body weight was measured in duplicate with a Seca 728 scale (Seca, Hamburg, Germany) with both measures being within 10 g. On the rare occasion these measures exceeded the criteria set forth, a third measure was obtained and the two closest values averaged. Weight-for-length z-scores were calculated using World Health Organization data. Total adiposity (% fat), fat mass (g), lean mass (g), bone mineral density (g/cm2), and bone mineral content (g) were collected using a Lunar iDXA (General Electric, Fairfield, CT, USA) scanner as described previously [12 (link)]. During the scan, the infant wore only a diaper and was swaddled in a light blanket. The principal investigator (DAF) positioned all infants and performed subsequent scan analyses.
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3

Infant Anthropometry Measurements

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Research staff measured infant weight (Medela BabyWeigh II Scale, McHenry, Il) at each visit (enrollment, 1, 3, 8, and 16 weeks) in duplicate (or triplicate if the first two measurements differed by more than 50 g). Infant recumbent length (Seca 416 Infantometer, Hanover, MD) was measured at enrollment and 16 weeks in duplicate (or triplicate if the first two measurements differed by more than 0.2 cm). The weight and length protocols followed standardized procedures (Centers for Disease Control and Prevention). Anthropometry measurements were recorded on iPads by research staff using Qualtrics, a secure, web-based survey interface. Infant measurements were used to derive weight-for-age at enrollment, 3, 8, and 16 weeks and length-for-age, weight-for-length and BMI-for-age at enrollment and 16 weeks, which were converted to z scores and percentiles using World Health Organization (WHO) reference standards (de Onis et al., 2004 (link)).
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4

Infant Growth Measurement Protocol

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Birth weight was extracted from neonatal records. Head circumference, mid-upper arm circumference (MUAC), length (Seca 416 infantometer) and weight (SECA 354 digital baby scale from zero to six months of age and Seca 876 2-in-1 scale from six to 12 months of age) were measured at each of four study visits which included, within 21 days of birth and at two, six and 12 months of age by the study physician or nurse (Fig 1). Anthropometry was converted to standardized Z-scores using the WHO Child Growth Standards [15 ]. Conversion of anthropometry to Z-scores was not possible for preterm infants until corrected age surpassed term gestation.
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5

Infant Growth and Body Composition

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Birth weight was recorded from the medical records postdelivery. At all other time points, infants were weighed naked without nappies and before feeding using a Seca 757 electronic baby scale (Seca Ltd., Hamburg, Germany) to the nearest 1 g. Infant supine length was measured using a Seca 416 infantometer (Seca Ltd., Hamburg, Germany) to the nearest 0.1 cm.
To assess subcutaneous fat at various regions and to estimate relative subcutaneous body fat [18 ], skinfold thickness (SFT) was measured at 4 sites (triceps, subscapular, flank, and quadriceps) in triplicate on the left-hand side of the body using a Holtain Tanner/Whitehouse Skinfold Caliper (Holtain Ltd., Crymych, UK).
All anthropometry and body composition measurements were performed by one of three trained paediatric research nurses.
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6

Infant Growth and Body Composition

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At birth, one, three, and six months, infant length was measured with the infant undressed, but diapered using the Seca 416 infantometer (Seca, Birmingham, UK). Infant naked weight was measured using the high sensitivity scale embedded in the PEA POD (COSMED USA, Inc., Concord, CA, USA). Age and sex-specific LAZ, WAZ, and WLZ were subsequently calculated using the World Health Organization Z-score classification system for term infants [36 (link)]. At six months, infant BF%, FM, and FFM were assessed utilizing dual X-ray energy absorptiometry (DXA), with the infant in a supine position wearing only a disposable diaper and swaddled in a light cotton blanket [37 (link)]. All measurements were obtained using standardized protocols and after cross-training of study staff [38 ].
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7

Newborn Anthropometric Measurements

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Birth weight was recorded from the hospital notes. Other measurements in newborns, such as the length, head circumference and various skinfolds thicknesses, were made as soon as possible after birth [at a median (interquartile range) age of 2 (1–16) days of age] by trained paediatric research nurses. Each measurement was performed in triplicate and the mean of these measurements used for statistical analyses. Body length was measured using a SECA 416 Infantometer (Hamburg, Germany). Skinfolds thicknesses at the subscapular, flank, triceps and quadriceps regions of the left side of the body were measured using Holtain calipers and head circumferences were measured using a tape measure (both Chasmors Ltd., London, U.K.) [21 (link)]. Intra- and inter-observer technical errors of measurement were 0.4–2.8% and 2.0–3.2%, respectively, for the skinfold thicknesses.
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8

Measuring Caregiver and Child Anthropometrics

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Caregiver’s height (Proscale Stadiometer, Fletcher, NC) and weight (Seca Digital Scale, Hanover, MD) were collected in duplicate by trained researchers during the baseline laboratory visit. The mean of the two measurements was used to calculate current BMI and weight status. Child recumbent length (Seca 416 Infantometer, Hanover, MD) and weight (Seca 374 Digital Baby Scale, Hanover, MD) were collected in duplicate by trained researchers during the laboratory visit. The mean of the two measurements was used to calculate age- and sex-specific WFL z-scores at baseline using World Health Organization (WHO) reference standards.35 (link)
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9

Infant Anthropometrics and Body Composition

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At birth and 1, 3, and 6 months, infant length was measured using the Seca 416 infantometer. Infant naked weight was measured using the high-sensitivity scale embedded in the Pea Pod (COSMED USA Inc., Concord, California). Age- and sex-specific length for age z score (LAZ) and weight for age z score (WAZ) were subsequently calculated using the World Health Organization z score classification system for term infants.26 (link) Infant percentage body fat (BF), fat mass (FM), and fat-free mass (FFM) were assessed using Pea Pod at 1 and 3 months and using dual x-ray energy absorptiometry at 6 months, with the infant in a supine position, wearing only a disposable diaper, and swaddled in a light cotton blanket.27 (link)
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10

Infant Growth Measurements Protocol

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Infants were measured by trained paediatric research nurses, with weight, length and skinfold thickness assessed in the newborn, and then at three and 12 months of age. Weight was measured to the nearest 1 g using a Seca 757 electronic baby scale (Seca, Birmingham, UK). Supine length was measured to the nearest 0.1 cm using a Seca 416 Infantometer (Seca, Birmingham, UK). BMI was then calculated. Skinfold thickness was measured in triplicate at four sites (triceps, subscapular, flank and quadriceps) on the left hand side of the body using a Holtain Tanner/Whitehouse Skinfold Caliper (Holtain Ltd, Crymych, UK).
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