Ultrasound reference values for the calcaneus of children and adolescents at moderate altitudes in Peru
J. pediatr. (Rio J.)
;
97(1): 88-95, Jan.-Feb. 2021. tab, graf
Article
in English
| LILACS
| ID: biblio-1154720
ABSTRACT
Abstract Objective:
a) Establish reference values for bone parameters by using the speed of sound (SOS, m/s) of broadband ultrasound attenuation (BUA, dB/MHz) and establish a bone quality index (BQI = αSOS + βBUA) for children and adolescents living in a region of moderate altitude, b) compare bone parameters with an international standard (with different ethnic, socio-economic, and lifestyle backgrounds) by using ultrasound of the calcaneus (heel bone) (QUS).Methods:
A descriptive cross-sectional study was carried out with children and adolescents between the ages of 6.0 and 16.9 years old. The sample was selected randomly. A total of 1322 subjects were studied. Weight, height, and bone parameters, using ultrasound of the calcaneus, were evaluated SOS, BUA, and BQI. Body Mass Index BMI was calculated.Results:
The average age of males was 11.44 ± 0.35 years old, and for females, it was 11.43 ± 0.35 years old. The students in this research showed slightly higher values of SOS, BUA, and BQI for both sexes when compared with the international reference (the 50th percentile). Percentiles were generated (P3, P10, P25, P50, P75, P90, and P97) using the LMS method [median (M), standard deviation (S), and power of the Box-Cox transformation (L)] by age and sex.Conclusion:
The students living at a moderate altitude showed slightly higher values in bone parameters in relation to the international reference. This pattern depicted a population with a better state of bone health. The proposed percentiles may be used to categorize adequate to at risk bone parameters based on age and sex.
Full text:
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Index:
LILACS (Americas)
Main subject:
Calcaneus
Type of study:
Diagnostic study
/
Observational study
/
Prevalence study
/
Risk factors
Limits:
Adolescent
/
Child
/
Female
/
Humans
/
Male
Country/Region as subject:
South America
/
Peru
Language:
English
Journal:
J. pediatr. (Rio J.)
Journal subject:
Pediatrics
Year:
2021
Type:
Article
Affiliation country:
Chile
/
Peru
Institution/Affiliation country:
Center for Research/PE
/
Universidad Católica de Santa María/PE
/
Universidad Católica del Maule/CL
/
Universidad Privada San Juan Bautista/PE
/
Universidad San Sebastián/CL
/
Universidad del Bio Bio/CL
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