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Biomedical subjects

M Casanova Bellido

Publications and source records attributed to M Casanova Bellido.

11 recordsLinked to original sources
PubMed2004

[Body composition analysis using bioelectrical and anthropometric parameters].

BACKGROUND: Interest in the study of body composition in childhood is increasing. Bioelectrical impedance analysis (BIA) is an accurate and reliable method. OBJECTIVES: To determine anthropometric parameters, fat-free body mass and fat body mass using BIA and anthropometry, and to establish their relationship. MATERIAL AND METHOD: A total of 365 healthy children (188 boys, 177 girls) aged 6.0 to 14.9 years were studied. Weight, height, arm circumference, skinfolds (bicipital, tricipital, subscapular and suprailiac) and bioelectrical parameters were measured. Body density was calculated from the four skinfold measurements using Brook's formula. Bioelectrical impedance was measured with a BIA-101 S (RJL Systems) using a fixed frequency (50 kHz). Fat-free body mass from BIA was calculated using Deurenberg's equation (FFM = 0.82 x height2/resistance). RESULTS: We present the mean, standard deviation and 3rd, 5th, 10th, 25th, 50th, 75th, 90th, 95th and 97th percentiles of anthropometric variables and fat mass and fat-free mass estimated using BIA. Correlations were found between fat-free mass estimated using BIA and anthropometric variables. The reliability of BIA in estimating fat mass was assessed with intraclass correlation coefficients, which were excellent (0.948 in boys, and 0.945 in girls). CONCLUSIONS: BIA is an easy, low-cost, and highly reliable method, making it a useful technique for studying human body composition. This method shows excellent correlation with anthropometric variables.

Adolescent↗
PubMed2002

[Usefulness of ultrasound in the assessment of bone mineralization in newborns].

BACKGROUND: The study of bone mineralization in the neonatal period and of bone disease is receiving increasing interest. Osteosonography is a new method for measuring bone mineralization without exposing the patient to radiation. OBJECTIVE: To determine the speed of ultrasound in healthy newborns, the possible variations in preterm infants, and their relationship with gestational age and anthropometry. METHODS: One-hundred newborns (53 term infants [26 males, 27 females] and 47 preterm infants [27 males and 20 females]) were studied. The variables measured were gestational age, length, weight, circumferences (head and thoracic) and amplitude-dependent speed of sound (Ad-SOS). A prior study was carried out to select the area of measurement with ultrasound between both femora and humeri. RESULTS: No significant differences in Ad-SOS were found between the right and left femora or humeri, but there were significant differences between femora and humeri (p 0.001). The mean Ad-SOS in the population was 1706.6 36.3 m/s. Ad-SOS was 1726 26.2 m/s in term infants and 1679 36.7 m/s in preterm infants; this difference was statistically significant. Correlations were also found between Ad-SOS and gestational age and anthropometric variables. CONCLUSIONS: Ad-SOS is an effective method for bone mineralization screening in newborns and for detecting postnatal changes.

Anthropometry↗
PubMed1996

[Copper in the neonatal period. Maternal-fetal relations].

UNLABELLED: The objective of this study has been to know the copper levels in maternal and cord blood at delivery, the relationships between them, and the influence that maternal age, parity, social class, sex, gestational age and anthropometric parameters have over them. MATERIAL AND METHOD: Copper levels in serum from one hundred mothers and their newborns have been determined by atomic absorption spectrophotometry. RESULTS: The mean copper level in maternal serum was 232.4 +/- 31.3 micrograms/100 ml, and 50.2 +/- 18.4 micrograms/100 ml in cord blood. We do not find any influence of maternal age, parity, sex and neonatal anthropometry over these levels. We see an ascending tendency of serum copper in the newborns as they increase their gestational age, and in mothers as soon as they belong to a lower socioeconomic level. There is a significant difference between the cord copper levels of newborns from mothers with serum copper levels less or equal to P25 or P50 and those from ones over P75, and a significant positive correlation between maternal and newborns ones. CONCLUSIONS: Our results show the relationship between the maternal and neonatal copper status, the influence of the socioeconomic situation on the maternal levels, and the age gestational age on the newborns ones.

Adolescent↗
PubMed1992

[Neurologic alert signals in one-year-old infants: relation to signs of intrapartum hypoxia].

As a method to evaluate the neurologic evolution and to establish if there exists any differences in the relation with the signs of intrapartum hypoxia, we have explored the neurologic "alert signs" at a certain age (12 months of life) in 80 full-term newborn infants with normal weight and without criteria of neurologic risk. We did not find statistically significant differences in the presence of alert signs in regards to sex, gestational risk, type of amniotic fluid, way of delivery, one-minute and five-minute Apgar scores or acid-base state in the umbilical artery at birth. We did find a significant increase in the number of alert signs in patients with cardiotocographic patterns that were suspicious or not tranquil in relation to those whose cardiotocographic patterns were tranquil.

Apgar Score↗
PubMed1992

[Adverse reactions to vaccines].

The adverse reactions to vaccines are still a questioned subject because of the diversity of criteria they have been assessed with. We review the different etiopathogenic mechanisms that may be involved in their production, so as their local and general clinical features. We finally suggest that in despite of presentation of the adverse reactions that can be really attributed to vaccines, in order to known their real incidence it is necessary to develop a control system all over the vaccinated population.

Child↗
PubMed1990

[Usefulness of the determination of free erythrocyte protoporphyrin in relation to other hematologic parameters in iron deficiency].

Hematological parameters and free eythrocyte protoporphyrin (FEP) on a capillary blood sample were measured in 175 apparently healthy children ranging from 6 months to six years of age. Thirty eight children had hematological parameters descended and/or FEP elevated were asked to return for blood counts, FEP, serum ferritin, serum iron, total iron binding, capacity, transferrin saturation and ALA-D activity, on a venous blood sample. Only 34 children returned. Twenty seven, 15.4%, had iron stores descended or iron deficiency, 18 of them with anemia. FEP had significant correlation coefficients with hematologic parameters (p less than 0.001), serum iron and transferrin saturation (p less than 0.01). On iron deficiency anemia detection, the FEP had a sensibility and specificity of 0.94 and 0.75 respectively.

Anemia, Hypochromic↗
PubMed1989

[Evaluation of the treatment with clonidine of short stature in children].

We report the results obtained after a treatment with clonidine. 100 micrograms/m2/d, to 23 prepubertal children (11 boys and 12 girls) along six months. All of them presented the characteristics of constitutional growth delay, and responded to different stimuli with serum GH levels upper to 10 ng/ml. The growth speed and the somatomedin C levels increased and the height SD score decreased, in 87% of the subjects. We contrast this results with the ones obtained by others authors and we finally comment the clonidine acting mechanisms and the possible therapeutic indications.

Body Height↗