Body Mass Index as an Indicator of Pulmonary Dysfunction in Patients With Adolescent Idiopathic Scoliosis
Notice bibliographique
Résumé
STUDY DESIGN: Prospective clinical study. OBJECTIVES: To investigate the factors correlated with pulmonary function in adolescent idiopathic scoliosis (AIS) patients, and to determine the influence of body mass index (BMI) on the pulmonary function. SUMMARY OF BACKGROUND DATA: Impaired pulmonary function has been reported in patients with AIS. The factors reported to affect pulmonary function included the curve magnitude, location of the apex vertebrae, decrease in thoracic kyphosis, and the number of vertebrae involved. A low BMI has been well confirmed in AIS patients. However, the relationship between BMI and pulmonary function has never been investigated. METHODS: One hundred twenty female patients with a single thoracic curve were enrolled in this study. Pulmonary function test and radiographic examination were performed. Several radiographic parameters, including the curve magnitude, the curve type, location of the apical vertebra, the number of vertebrae involved, and the degree of thoracic kyphosis, were recorded. BMI was calculated according to the measurements of standing height and body weight. Patients were divided into 2 groups according to BMI, (group A >17.5 kg/cm and group B ≤17.5 kg/cm), and the pulmonary function was compared between the 2 groups with students t test. Partial correlation analysis and stepwise multiple regression analysis were used to assess the association between BMI and the results of the pulmonary function test. The receiver operating characteristics curve was created to identify the best dividing point for diagnostic variables. RESULTS: The average percentage of predicted vital capacity, forced vital capacity, and forced expiratory volume in 1 second was significantly decreased in patients with a lower BMI. A positive correlation was found between BMI and pulmonary function (r=0.41, P<0.001). The stepwise regression analysis showed that low BMI was significantly associated with pulmonary function impairment (R=0.206, P<0.001). According to the receiver operating characteristics curve, patients with a BMI <17.7 kg/cm are prone to have abnormal pulmonary function. CONCLUSIONS: BMI was found to be an important indicator for pulmonary function in AIS patients. The decreased BMI could explain approximately one-fifth of the variation in pulmonary impairment in AIS patients, which might shed some light on the rehabilitation of preoperative pulmonary function.
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Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».