A novel, simple, and inexpensive approach to sorptive extraction, which we call solvent in silicone tube extraction (SiSTEx), was applied to pesticide residue analysis and its effectiveness and efficiency were evaluated. In SiSTEx, which is a form of open tubular sorptive extraction, a piece of silicone tubing (4 cm long, 1.47 mm ID, 1.96 mm OD in this study) is attached to the cap of a 20 mL g...

Introduction: Since the days of Hippocrates, many modifications have been proposed in endonasal dacrocystorhinostomy (DCR), with the use of new drugs and implants showing variable results. The objective of this study was to analyze whether the use of silicon tubing or mitomycin C administration has an added advantage over conventional endonasal DCR.  Materials and Methods: A randomized controll...

Purpose: We explored the effects of silicone tube fixation using a nonabsorbable suture on adult nasal wall during intubation.Methods: The medical records patients (50; 54 eyes) diagnosed with nasolacrimal duct stenosis and canalicular lacerations who underwent to (using sutures) intubation from January 2019 June 2021 were followed-up for more than 3 months after surgery retrospectively investi...

INTRODUCTION To reduce the ischaemia time of injured limbs in wartime, temporary vascular shunts (TVS) are commonly used. However, TVS are stabilized at the ends of the injured vessels using manual suture ties, the risk of dislodgement is high, and tightening manual suture ties is too time consuming. TECHNICAL SUMMARY Locked temporary vascular shunts (LTVS) were designed, and each was compose...

Eustachian tube disorders can lead to chronic otitis media with consecutive conductive hearing loss. To improve treatment and to develop new types of implants such as stents, an adequate experimental animal model is required. As the middle ear of sheep is known to be comparable to the human middle ear, the dimensions of the Eustachian tube in two strains of sheep were investigated. The Eustachi...

Bioengineering of small-diameter blood vessels offers a promising approach to reduce the morbidity associated with coronary artery and peripheral vascular disease. The aim of this study was to construct a two-layered small-diameter blood vessel using smooth muscle cells (SMCs) and endothelial cells (ECs) differentiated from human adipose-derived stem cells (hASCs). The outer layer was construct...

BACKGROUND Long-gap peripheral nerve defects arising from tumor, trauma, or birth-related injuries requiring nerve reconstruction are currently treated using nerve autografts and nerve allografts. Autografts are associated with limited supply and donor-site morbidity. Allografts require administration of transient immunosuppressants, which has substantial associated risks. To overcome these lim...

INTRODUCTION External dacryocystorhinostomy (DCR) has been the gold standard for treatment of epiphora. Currently several endoscopic DCR techniques are described. We evaluated results of endonasal DCR in our institution. METHODS A retrospective chart review of a consecutive series of DCR procedures. Patients were subjected to a questionnaire a minimum of 6 months postoperatively to assess lon...

OBJECTIVES Endonasal dacryocystorhinostomy (DCR) is a well-established treatment method in patients with nasolacrimal duct obstruction. However, there are a few reports about the overall management of failed endonasal DCR. We investigated the causes and management strategies of failed endonasal DCR. METHODS This retrospective review included 61 patients (61 eyes) who had undergone revision su...

We present a 3-year-old, preterm, male patient, who suffered bronchopulmonary dysplasia and was tracheostomised, giving rise to Cotton grade III subglottic stenosis (SS) secondary to prolonged intubation, which was subsequently treated by laryngotracheofissure with a posterior cricoid split and interposition of anterior costal cartilage and placement of a new suprastomal stent (Fig. 1). The lar...