To develop a numerical method for the description of the flow field around a Björk-Shiley (BS) standard valve prosthesis in aortic position, detailed experimental measurements and numerical calculations are performed under steady flow conditions. The experiment was conducted at Reynolds numbers up to 800. In order to perform LDA measurement of velocity in the vicinity of the valve with a curved...

OBJECTIVE To validate a parent proxy instrument to study the voice-related quality of life (VR-QOL) for the pediatric population. METHODS The voice outcome survey (VOS) was administered to 108 caregivers of children aged 2 to 18 years, who either had a tracheotomy or had achieved surgical decannulation. The VOS was altered so that each item was addressed to the parent proxy as opposed to the ...

BACKGROUND The purpose of this study was to compare postoperative morbidities and functional outcomes of pectoralis major myocutaneous (PMMC) flap and cutaneous free flap reconstruction approaches in hypopharyngeal squamous cell carcinoma patients. METHODS We retrospectively reviewed records from 99 patients who underwent hypopharyngeal reconstruction with a cutaneous free flap (n=85) or PMMC...

OBJECTIVES The aim of this study was to compare the effect of the presence of one or two arytenoids on early/late period swallowing-aspiration functions. METHODS Supracricoid partial laryngectomy (SCPL) with the diagnosis of laryngeal cancer between 2012 and 2014 were retrospectively evaluated. The patients were categorized into two groups as follows: group I, patients who underwent SCPL with...

OBJECTIVES To quantify functional and other outcomes after major resection and fasciocutaneous free-flap reconstruction of the tongue and floor of mouth, and to describe reconstructive technique. DESIGN A hypothesis-generating, retrospective cohort study of 43 patients who underwent, at minimum, a hemiglossectomy and resection of the floor of the mouth for oral cancer followed by fasciocutane...

A 66-YR-OLD male patient developed expiratory stridor shortly after decannulation. Bronchoscopy showed, at the stoma site, a large flap (fig. A and B, arrows) that moved synchronously with the respiratory cycle and obstructed more than 80% of the lumen during expiration (fig. B). The reinsertion of the tracheotomy tube trapped the flap between the tube itself and the anterior tracheal wall, and...

OBJECTIVE The study goal was to determine the impact of various surgical procedures for bilateral vocal cord paralysis in children by using established principles of meta-analysis. STUDY DESIGN AND SETTING We conducted a retrospective review of the literature in which a predetermined protocol was used to identify articles for meta-analysis. Six articles met inclusion criteria, and pertinent d...

The aim of the present retrospective controlled study was to analyse and compare risk factors for tracheocutaneous fistula in patients who received tracheostomy after supracricoid partial laryngectomy with those who received tracheostomy for other causes. We enrolled 39 patients with tracheocutaneous fistulas who were divided into two groups. The first received temporary tracheostomy for suprac...