Valeurs de référence : Questions médicales fréquentes
Nom anglais: Reference Values
Descriptor UI:D012016
Tree Number:E05.978.810
Termes MeSH sélectionnés :
Reference Values
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"name": "Diagnostic",
"headline": "Diagnostic sur Valeurs de référence",
"description": "Comment sont déterminées les valeurs de référence ?\nPourquoi les valeurs de référence varient-elles ?\nQuelles analyses utilisent des valeurs de référence ?\nLes valeurs de référence sont-elles universelles ?\nComment interpréter des résultats en dehors des valeurs de référence ?",
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"@type": "Question",
"name": "Comment sont déterminées les valeurs de référence ?",
"position": 1,
"acceptedAnswer": {
"@type": "Answer",
"text": "Elles sont établies à partir d'études sur des populations saines et varient selon l'âge et le sexe."
}
},
{
"@type": "Question",
"name": "Pourquoi les valeurs de référence varient-elles ?",
"position": 2,
"acceptedAnswer": {
"@type": "Answer",
"text": "Elles varient en fonction de facteurs comme l'âge, le sexe, l'origine ethnique et les méthodes de test."
}
},
{
"@type": "Question",
"name": "Quelles analyses utilisent des valeurs de référence ?",
"position": 3,
"acceptedAnswer": {
"@type": "Answer",
"text": "Elles sont utilisées dans les analyses sanguines, urinaires et d'autres tests diagnostiques."
}
},
{
"@type": "Question",
"name": "Les valeurs de référence sont-elles universelles ?",
"position": 4,
"acceptedAnswer": {
"@type": "Answer",
"text": "Non, elles peuvent différer selon les laboratoires et les populations étudiées."
}
},
{
"@type": "Question",
"name": "Comment interpréter des résultats en dehors des valeurs de référence ?",
"position": 5,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des résultats anormaux nécessitent une évaluation clinique pour déterminer leur signification."
}
},
{
"@type": "Question",
"name": "Quels symptômes peuvent indiquer des valeurs anormales ?",
"position": 6,
"acceptedAnswer": {
"@type": "Answer",
"text": "Fatigue, douleurs, changements de poids ou d'appétit peuvent signaler des anomalies."
}
},
{
"@type": "Question",
"name": "Les symptômes sont-ils toujours présents avec des valeurs anormales ?",
"position": 7,
"acceptedAnswer": {
"@type": "Answer",
"text": "Non, certaines anomalies peuvent être asymptomatiques et découvertes par des tests."
}
},
{
"@type": "Question",
"name": "Comment les symptômes influencent-ils les valeurs de référence ?",
"position": 8,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des symptômes peuvent indiquer des conditions sous-jacentes affectant les valeurs de référence."
}
},
{
"@type": "Question",
"name": "Les symptômes varient-ils selon l'âge ?",
"position": 9,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, certains symptômes peuvent être plus fréquents ou significatifs à différents âges."
}
},
{
"@type": "Question",
"name": "Les symptômes peuvent-ils masquer des anomalies ?",
"position": 10,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des symptômes peuvent masquer des problèmes sous-jacents, rendant le diagnostic difficile."
}
},
{
"@type": "Question",
"name": "Comment les valeurs de référence aident-elles à la prévention ?",
"position": 11,
"acceptedAnswer": {
"@type": "Answer",
"text": "Elles permettent d'identifier les risques et de mettre en place des mesures préventives."
}
},
{
"@type": "Question",
"name": "Quels examens préventifs se basent sur des valeurs de référence ?",
"position": 12,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les bilans de santé réguliers, les dépistages de maladies chroniques et les analyses sanguines."
}
},
{
"@type": "Question",
"name": "Les valeurs de référence changent-elles avec l'âge ?",
"position": 13,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, elles évoluent avec l'âge, nécessitant des ajustements dans les examens préventifs."
}
},
{
"@type": "Question",
"name": "Comment maintenir des valeurs de référence normales ?",
"position": 14,
"acceptedAnswer": {
"@type": "Answer",
"text": "Adopter un mode de vie sain, incluant une alimentation équilibrée et de l'exercice régulier."
}
},
{
"@type": "Question",
"name": "Les vaccinations influencent-elles les valeurs de référence ?",
"position": 15,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, certaines vaccinations peuvent aider à maintenir des valeurs de référence normales."
}
},
{
"@type": "Question",
"name": "Comment les traitements sont-ils ajustés selon les valeurs de référence ?",
"position": 16,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les traitements sont adaptés en fonction des résultats des tests et des valeurs de référence."
}
},
{
"@type": "Question",
"name": "Les valeurs de référence influencent-elles les médicaments prescrits ?",
"position": 17,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, elles aident à déterminer les dosages et les types de médicaments appropriés."
}
},
{
"@type": "Question",
"name": "Quels traitements sont basés sur des valeurs de référence ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les traitements pour le diabète, l'hypercholestérolémie et d'autres conditions en dépendent."
}
},
{
"@type": "Question",
"name": "Les traitements peuvent-ils normaliser les valeurs de référence ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, un traitement efficace peut ramener les valeurs à la normale et améliorer la santé."
}
},
{
"@type": "Question",
"name": "Comment les valeurs de référence guident-elles le suivi des traitements ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Elles permettent d'évaluer l'efficacité des traitements et d'ajuster les stratégies si nécessaire."
}
},
{
"@type": "Question",
"name": "Quelles complications peuvent survenir avec des valeurs anormales ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des complications comme des maladies cardiovasculaires, diabète ou insuffisance rénale peuvent survenir."
}
},
{
"@type": "Question",
"name": "Les valeurs de référence anormales sont-elles toujours graves ?",
"position": 22,
"acceptedAnswer": {
"@type": "Answer",
"text": "Pas toujours, mais elles peuvent indiquer des problèmes de santé nécessitant une attention."
}
},
{
"@type": "Question",
"name": "Comment prévenir les complications liées aux valeurs anormales ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "Un suivi régulier et des ajustements de traitement peuvent aider à prévenir les complications."
}
},
{
"@type": "Question",
"name": "Les complications peuvent-elles être asymptomatiques ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, certaines complications peuvent ne pas présenter de symptômes jusqu'à un stade avancé."
}
},
{
"@type": "Question",
"name": "Comment évaluer le risque de complications ?",
"position": 25,
"acceptedAnswer": {
"@type": "Answer",
"text": "L'évaluation se fait par des tests réguliers et l'analyse des valeurs de référence."
}
},
{
"@type": "Question",
"name": "Quels facteurs de risque influencent les valeurs de référence ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "L'alimentation, l'activité physique, le tabagisme et l'hérédité influencent les valeurs."
}
},
{
"@type": "Question",
"name": "Les facteurs de risque varient-ils selon les populations ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les facteurs de risque peuvent varier selon l'origine ethnique et les conditions socio-économiques."
}
},
{
"@type": "Question",
"name": "Comment réduire les facteurs de risque ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Adopter un mode de vie sain, éviter le tabac et faire des examens réguliers peut aider."
}
},
{
"@type": "Question",
"name": "Les facteurs de risque peuvent-ils être modifiables ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des facteurs comme l'alimentation et l'exercice sont modifiables et influencent la santé."
}
},
{
"@type": "Question",
"name": "Comment les antécédents familiaux affectent-ils les valeurs de référence ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les antécédents familiaux de maladies peuvent augmenter le risque et influencer les valeurs."
}
}
]
}
]
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For interpretation of pulmonary function tests (PFTs), reference values based on sex, age, height and ethnicity are needed. In Norway, the European Coal and Steel Community (ECSC) reference values rem...
To assess the effects of changing from ECSC to GLI reference values for spirometry, DLCO and static lung volumes, using a clinical cohort of adults with a broad range in age and lung function....
PFTs from 577 adults (18-85 years, 45% females) included in recent clinical studies were used to compare ECSC and GLI reference values for FVC, FEV1, DLCO, TLC and RV. Percent predicted and lower limi...
In both sexes, GLI % predicted values were lower for FVC and FEV1, and higher for DLCO and RV, compared to ECSC. The disagreement was most pronounced in females, with mean (SD) difference 15 (5) perce...
The observed differences between GLI and ECSC reference values are likely to entail significant consequences with respect to criteria for diagnostics and treatment, health care benefits and inclusion ...
Magnetic resonance imaging (MRI) is the gold standard for evaluating body composition. However, the reference ranges have not been established....
Three lean tissue and seven adipose tissue parameters based on MRI data from the UK Biobank were used in this study. Participants with European ancestry and data on at least one parameter were screene...
The final analysis set for each parameter ranged from 4842 to 14 148 participants (53.4%-56.6% women) with a median age of 61. For lean tissue parameters, compared with those at age 45, the median tot...
We have established reference ranges for MRI-measured body composition parameters in a large community-dwelling population. These findings provide a more accurate assessment of abnormal adipose and mu...
Beverages are an integral part of human nutrition, yet little is known about their contribution to daily intakes of minerals and trace elements in German consumers. Using inductively coupled plasma-ma...
Strength and muscle mass are important determinants of health status, and reference values for pediatric populations from every country or geographic region are needed. The aim of this study was to de...
Peripheral perfusion index (PPI) is useful in a variety of neonatal settings. Currently, available reference values are from small numbers and highly variable....
We sought to generate reference values of PPI by analysing previously collected data from newborns who underwent mandated universal pulse oximetry and PPI screening from 2018 to 2021 using uniform pro...
Data from 388 205 newborns who underwent universal pulse oximetry screening in the first week of life were used for this analysis. Pre and postductal values showed a non-normal distribution and skewed...
This study, based on the largest available dataset, provides reference values for PPI in newborns. A significant influence of gender and birth weight on PPI values in newborns has been identified. Fut...
The Life-Space Assessment (LSA) can compliment traditional physical performance measures of mobility by accounting for the interaction between individuals and their environment. However, there are no ...
Baseline data for participants aged 45-84 years old from the Canadian Longitudinal Study on Aging (CLSA) were used (n = 22,154). Quantile regression was used to estimate specific percentiles, with age...
On average, the sample was 62.5 ± 10.0 y.o. (51.1% males), with a weighted mean LSA score of 89.2 ± 17.0. There was also a decrease in LSA scores with age, where scores were lower for older age groups...
Reference data will aid in interpreting, comparing, and making inferences related to LSA scores obtained in clinical and research settings for Canadian adults....
Doppler ultrasound (DUS) is the main imaging modality to evaluate vascular complications of pediatric liver transplants (LT). The current study aimed to determine reference values and their change ove...
A consecutive cohort of pediatric patients undergoing an LT were retrospectively included between 2015 and 2020. Timepoints for standardized DUS were intra-operative and postoperative (day 0), days 1-...
One hundred twelve pediatric patients with 123 LTs were included (median age 3.3 years, interquartile range 0.7-10.1). Ninety-five HAs, 100 PVs, and 115 HVs without complications were included. Refere...
DUS reference values of hepatic vessels in children after LT are presented, reference values change over time with specific vessel-dependent patterns. Timepoint-specific reference values improve the i...
• Doppler ultrasound reference values of pediatric liver transplantations are not static but change over time. Applying the correct reference values for the specific timepoint may further improve the ...
The middle turbinate axilla (MTA) has always been used as a stable anatomic landmark for endoscopic surgeons to locate the lacrimal sac on the lateral nasal wall. Yet, little is known about whether th...
A series of 192 endoscopic dacryocystorhinostomy (DCR) surgeries were performed. All the patients had been diagnosed as unilateral nasolacrimal duct obstruction and received CT-DCG examinations. Accor...
The average distance from the sac superior fundus (SSF) to the MTA was 7.52 mm ± 3.23 mm, and it increased with the increase of the maximum transverse diameter of the sac among groups (p < 0.01). The ...
The lacrimal sac can be accurately located on the lateral nasal wall by the reference position of the MTA on CT-DCG images. The distance of the SSF to the MTA and the SSF to the CC is related to the l...
To establish the predicted value of pulmonary function determined by impulse oscillometry (IOS) in children (4-17 years old) in China....
A total of 6270 healthy children aged 4-17 years in China were included. The Master Screen IOS pulmonary function device (Jaeger Co, Germany) was used to detect the respiratory impedance (Zrs), resona...
The differences in the main IOS parameters between different age stages were statistically significant regardless of sex (P < 0.05). The stepwise multivariate regression analysis showed that IOS param...
The study revealed the reference values of IOS parameters in healthy Chinese children. In the evaluation of results for lung function measurements, this predicted value equation is more consistent wit...
ChiCTR: 1800019029....
Detection of syndesmotic ankle instability remains challenging in clinical practice due to the limitations of two-dimensional (2D) measurements. The transition to automated three-dimensional (3D) meas...