Journal of voice : official journal of the Voice Foundation
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Randomized Controlled Trial Comparative Study
Objective Evaluation of Presbyphonia: Spectroacoustic Study on 142 Patients with Praat.
Presbyphonia is the sequence of physiological events related to the process of senility of the vocal folds. The aim of our analysis was to provide deeper knowledge of presbyphonia, raising awareness of this condition as well as giving basic suggestions on how to treat related vocal alterations. ⋯ The Praat was confirmed to be a useful tool to detect the existence of the variation of the speech parameters in relation to aging and to quantify statistically significant differences that show a general deterioration in the voice quality, defined numerically. This might lead to a phoniatric treatment or speech therapy, which could improve patients' quality of life, leading to better vocal performance and social and communicative interaction.
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Randomized Controlled Trial Comparative Study
Evaluation of Electrostimulation Effect in Women With Vocal Nodules.
To evaluate the effect of transcutaneous electrical nerve stimulation (TENS) with and without tongue trills in women with vocal nodules. ⋯ TENS applied alone or combined with tongue trills was associated with improved glottal closure and phonation comfort. TENS associated with tongue trills yielded improved voice quality.
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Randomized Controlled Trial Comparative Study
Supraglottic Airway Devices and Effect on Voice-Comparison of LMA Proseal and i-gel: Double-Blind Randomized Clinical Trial.
Laryngeal mask airway (LMA) is an important alternative to endotracheal intubation for all professional voice users undergoing surgery. However, dysphonia is a known complication of LMA Proseal (PLMA) use. The i-gel airway (IGA) provides adequate airway seal without the need for an inflatable cuff. Hence, it helps to minimize the risk of tissue compression. This study compares effect of PLMA and IGA on voice at 24th hour after anesthesia. ⋯ PLMA and IGA both produce comparable and significant deterioration in acoustic variables at 24th hour after short duration general anesthesia.
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Randomized Controlled Trial
Beta-adrenergic blockade and voice: a double-blind, placebo-controlled trial.
This study investigated the effects of laboratory-induced stress and beta-adrenergic blockade on acoustic and aerodynamic voice measures. In a double-blind, placebo-controlled trial, 12 participants, six males and six females, underwent cold pressor-induced sympathetic activation followed by placebo or treatment with 40 mg propranolol. Aerodynamic and acoustic parameters of voice were collected at baseline, during cold pressor and after treatment with propranolol or placebo. ⋯ Jitter ratio increased significantly during propranolol treatment and cold pressor. Speaking rate demonstrated a statistically significant increase during cold pressor in the placebo control group. Gender differences were observed, but were few.
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Randomized Controlled Trial
Double-blind study on the effects of topical anesthesia on laryngeal secretions.
The application of topical anesthesia to the oropharynx is a common clinical practice during oral and nasal laryngoscopy. Clinically, questions have been raised about whether topical anesthesia alters laryngeal secretions, which distorts clinical impressions. A double-blind, placebo controlled design was employed to address this issue. ⋯ Null results in this data set replicate and extend previously reported findings by other authors. An incidental but potentially interesting finding was that the order of treatment condition (anesthesia versus placebo first) seemed relevant for secretions: Subjects who received the anesthesia condition first tended to show more secretion balling in general, as compared with subjects who received the placebo condition first. Speculation is entertained regarding possible physiological pathways for these incidental findings, which could be relevant for some clinical practice.