What Causes Macrocephaly?

Discussion “Macrocephaly is defined as [an occipitofrontal circumference or head circumference, OFC ] of> 2 standard deviations above the mean or above the 97th percentage for a given age, and gender, or when serial measurement shows progressive enlargement, crossing of one or more major percentiles, or when there is an increase in OFC> 2 cm/month in the first 6 months of life.” Megalencephaly is enlargement of the brain parenchyma. The OFC should be measured using a non-elastic tape which surrounds the head along the line of the glabella and posterior occipital protrusion. There are ethnic differences for head circumferences so the growth chart that best matches the child’s family heritage should be used. A review of the best growth charts can be found here. General averages for OFC increase are: Average at birth = ~35 cm 0-3 months = 2 cm/month (average 3 month old is ~ 41 cm) 0-1 year = 1 cm/month (average 1 year old is ~ 47 cm) > 1 year = only another 8 cm total (average adult is ~ 55 cm) A review of the other growth parameters can be found here. Patients should be evaluated for developmental delay, signs of intracranial infection or trauma, syndromic features, and family history of cutaneous or neurological abnormalities. Children with non-full fontanels, normal mentation and no signs of developmental delay are more likely to have familial, isolated or benign enlargement of the subarachnoid space. Changes in mentation, developmental delay a...
Source: PediatricEducation.org - Category: Pediatrics Authors: Tags: Uncategorized Source Type: news

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Source: NYT - Category: American Health Authors: Tags: Pregnancy and Childbirth Paralysis Birth Defects Spina Bifida Disabilities Spine (Body Part) Fetal surgery Texas Children ' s Hospital your-feed-healthcare Source Type: news
Publication date: August 2019Source: Research in Developmental Disabilities, Volume 91Author(s): Xiaomeng Chen, Lelin Liang, Minghui Lu, Miloň Potměšil, Jingxun ZhongAbstractThe purpose of this study was to examine the effects of reading mode (oral and silent reading) and braille reading patterns (one-handed pattern, mark pattern, parallel pattern, cooperative pattern) on the reading speed and comprehension of students with visual impairments in China. Seventy-three students with visual impairments aged 10–19 years participated in the study; 48 were students with congenital visual impairments and 25 were stu...
Source: Research in Developmental Disabilities - Category: Disability Source Type: research
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Source: LWT Food Science and Technology - Category: Food Science Source Type: research
In this study, subcritical water extraction (SWE), SWE in aqueous citric acid (pH 5.0) (SWEC), and ultrasound-assisted SWEC (USWEC) were used to extract soluble dietary fiber (SDF) from wheat bran. Results showed that SWE-based methods significantly influenced the physicochemical, functional, and biological properties of the SDF. The fraction SDF-III attained via USWEC had higher SDF yield (46.30%) and carbohydrate content (82.91%), and lower weight-average molecular weight (65.2 kDa) and particle size (1.17 μm), and looser and more porous surface structure, compared with the SDF-I and SDF-II obtained by SWE and SWE...
Source: Food Chemistry - Category: Food Science Source Type: research
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Source: Chemical Engineering and Processing: Process Intensification - Category: Chemistry Source Type: research
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Source: UNISON Health and safety news - Category: Occupational Health Authors: Tags: Article disabled members National Disabled Members sexual harassment women members young members Source Type: news
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Source: SafetyLit - Category: International Medicine & Public Health Tags: Age: Adolescents Source Type: news
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Source: SafetyLit - Category: International Medicine & Public Health Tags: Age: Elder Adults Source Type: news
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Source: Journal of the American College of Surgeons - Category: Surgery Tags: Western surgical association article Source Type: research
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