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Perceptual and Acoustic Parameters of Vocal Nodules in Children by Andréa Cristina Joia Gramuglia; Elaine L.M. Tavares; Sérgio Augusto Rodrigues; Regina H.G. Martins is a Medicine article available to read on EtoBox.
What is Perceptual and Acoustic Parameters of Vocal Nodules in Children about?
Vocal nodules are the major causes of dysphonia during childhood and have been diagnosed in 40-60% videolaryngoscopic exams of dysphonic children. They prevail among boys until adolescence, peaking between 5 and 10 years of age [1][2][3]. Vocal abuse and incorrect use of the voice are the main predisposing factors [4,5]. Hyperactivity, impulsiveness and anxiety are psychoemotional features common to children with nodules [6]. Nodule formation starts with the traumatic collision between vocal folds, leading to damages to the epithelium and the lamina propria. Laryngeal hypercontraction causes increased pressure of capillaries of the lamina propria, which reaches values higher than 20 cm H 2 O, resulting in transudate, inflammatory cell influx and subepithelial edema [7]. The basement membrane and the epithelium concomitantly thicken, while the fibronectin and the collagen in the lamina propria increase, making the lesion more rigid and fibrotic [8,9]. Vocal nodules are diagnosed by means of videolaryngoscopic exams, which are easily performed for adults (Fig. 1). For children, however, these exams are impaired due to their lack of collaboration and immaturity. Although the videolary
Who reads Perceptual and Acoustic Parameters of Vocal Nodules in Children?
It is typically read by researchers, students, and practitioners in Medicine.
- Author
- Andréa Cristina Joia Gramuglia; Elaine L.M. Tavares; Sérgio Augusto Rodrigues; Regina H.G. Martins
- Publisher
- Elsevier BV
- Published
- 2013
- Language
- EN
- Field
- Medicine (Health Sciences)