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This study examines oropharyngeal swallow disorders and measures of pharyngeal and laryngeal movement during deglutition from videofluorographic studies of oropharyngeal swallow in 9 patients who had undergone supraglottic laryngectomy and 9 age-matched normal subjects. The swallows of surgical patients were examined at 2 weeks and 3 months postoperatively.(More)
The speech of 17 Parkinsonian patients was evaluated before and after the administration of L-DOPA therapy. A significant difference was demonstrated after treatment for voice quality, articulation, and pitch variation, but not for rate of speech. Amount of speech improvement correlated significantly with amount of physical improvement. Although age and(More)
A novel approach to localize the origin of a right ventricular outflow tract tachycardia using an ablation catheter having an orthogonally oriented electrode array is described. Bipolar electrogram polarity reversal using minimally filtered (1-500 Hz) electrograms simultaneously acquired in two axes from the ablation catheter permitted accurate localization(More)
Three young women volunteers were trained through instructional feedback in two breathing procedures: diaphragmatic, derived from Eastern meditative techniques, and thoracic, involving opposite maneuvers. A single-subject reversal design was employed. Physiograph recordings of diaphragmatic expansion and mouth breathing provided the basis for feedback.(More)
A spectrographic comparison of the voices of two patients with spastic dysphonia demonstrated differences in vocal characteristics. The voice of one patient was characterized by intermittent breathiness which appeared spectrographically as a breakdown in formant structure or as the addition of fricative fill superimposed upon resonance bars. The voice of(More)
PURPOSE We determined instances of aspiration in adults with tracheostomies and investigated the effect of the Passy-Muir tracheostomy speaking valve on occurrences of aspiration. METHODS Adults with tracheostomies scheduled for videofluoroscopic swallowing examinations who met inclusion criteria were enrolled. According to study protocol, 6 presentations(More)
BACKGROUND Because of the inability of fluoroscopy to image intracardiac structures, the precise anatomic location of successful slow pathway (SP) ablation is controversial. We hypothesized that adjunctive intracardiac echocardiography (ICE) in concert with conventional fluoroscopy and electrogram guidance could identify the anatomic site of successful SP(More)
Clearance of mucus from airways is vital in the treatment of pulmonary obstructive diseases, and especially cystic fibrosis (CF). This paper reviews briefly the structure of respiratory system, and then describes mucus rheology and mucus clearance mechanisms. It goes on to describe the operation of the Frequencer electro-acoustical transducer and the unique(More)
Medical therapy for the treatment of supraventricular tachycardias is frequently ineffective and associated with significant side effects, whereas curative surgical approaches have generally been limited by their considerable morbidity and cost. Greater understanding of the mechanisms underlying supraventricular tachycardias has improved our ability to(More)