Reference equations that express indexes obtained from forced expiratory maneuvers in relation to height and/or other independent variables are lacking for infants and children with artificial airways. The present study was performed to establish normative data of forced expiration by forced deflation in healthy intubated and paralyzed infants and children and to develop prediction equations in relation to height and to ulna length to enable pulmonary assessments in children whose height is difficult to measure. Measurements of forced and passive expiratory maneuvers after inflation to +40 cmH(2)O inspiratory pressure were prospectively obtained in 100 healthy anesthetized children from 0 to 5 yr of age. Linear regressions of log-transformed forced vital capacity (FVC) and maximum expiratory flow at 25% and 10% FVC (MEF(25) and MEF(10), respectively) obtained by forced deflation (-40 cmH(2)O airway opening pressure) and of analogous indexes obtained by passive deflation were used to develop prediction equations from height or ulna length. FVC was significantly dependent on age and height or ulna length. Prediction equations for FVC using height or ulna length were as follows: ln(FVC in ml) = -5.6 + 2.8 x ln(height in cm) and ln(FVC in ml) = 0.46 + 2.5 x ln(ulna length in cm). Younger subjects had a significantly steeper slope for FVC vs. height than the older age group. Normal reference data for forced expiratory maneuvers in intubated infants and children up to 5 yr of age will enable improved assessment of pulmonary dysfunction in acutely or chronically ventilator-dependent children. Using ulna length instead of height should facilitate respiratory assessment in ventilated children with spinal or joint deformities.
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http://dx.doi.org/10.1152/japplphysiol.91649.2008 | DOI Listing |
Pediatr Pulmonol
January 2025
Texas Children's Hospital, Houston, Texas, USA.
Background: An accurate height estimate is important for assessing pulmonary function, and body mass index. If a patient cannot stand, an accurate standing height cannot be directly measured. Knee-heel length, arm span, ulnar length, and tibial length have been studied in otherwise healthy populations as single measurements for height estimation.
View Article and Find Full Text PDFJ Pediatr Orthop B
January 2025
Department of Orthopaedic Trauma Surgery, Children's Hospital Affiliated to Shandong University (Jinan Children's Hospital), Jinan, Shandong Province, China.
This study aimed to summarize the clinical characteristics of acute epiphyseal osteomyelitis and acute metaphyseal osteomyelitis of long bones in children. Data of 43 children with acute osteomyelitis of long bones diagnosed and treated from November 2017 to January 2021 were retrospectively analyzed. Medical records, laboratory results, and MRI were reviewed.
View Article and Find Full Text PDFJ Vet Med Sci
December 2024
The University Museum, The University of Tokyo.
The significance of forelimb morphology has been discussed with a focus on specific morphological aspects; nonetheless, the correlation of overall morphology, including various linear measurements, with respect to ecological preference and adaptation has not been extensively explored, particularly using multiple taxa. We investigated the morphological characteristics of the long bones in the forelimbs of mammalian species and their relationship with specific functional adaptations using 20 linear measurements and 22 terrestrial species from 7 orders. Principal component analysis and canonical discriminant analysis showed that the lengths of the humerus, radius, and ulna as well as the distance from the smallest width to the proximal and distal ends, and the deltoid tuberosity length distinguished four adaptations: arboreal, terrestrial, fossorial, and semi-aquatic.
View Article and Find Full Text PDFJMIR Form Res
December 2024
School of Health Sciences, University of Manchester, Manchester, United Kingdom.
Background: Malnutrition is a major global health challenge. Worldwide, approximately 390 million adults are underweight, while 2.5 billion are overweight.
View Article and Find Full Text PDFAnthropol Anz
December 2024
Department of Physiology, Faculty of Medical Science, Naresuan University, Thailand.
Stature estimation from skeletal remains is crucial in forensic anthropology. This study aimed to develop population-specific equations for stature estimation using ulna and radius measurements in a Northeastern Thai population, a region known for its ethnic diversity. A total of 400 ulnae and 400 radii (200 of each bone from each sex) were analyzed from dry bone specimens.
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