OBJECTIVE To describe the audiometric results after stapes surgery in a consecutive series of patients with stapes footplate ankylosis combined with another ossicular middle ear anomaly. STUDY DESIGN A retrospective analysis of charts collected between 1986 and 2001. SETTING A tertiary referral center. PATIENTS A total of 25 patients (30 ears) underwent exploratory tympanotomies and ossic...

BACKGROUND To evaluate the long-term surgical outcome(s) in patients who have undergone canal-wall-down operation with mastoid and epitympanic obliteration using autologous cortical bone chips, bone pate and meatally-based musculoperiosteal flap technique. METHOD Retrospective evaluation of seventy patients operated during 1986-1991 due to a cholesteatoma. An otomicroscopy was performed to ev...

OBJECTIVES The aim of this study was to compare the hearing outcomes between canal wall up mastoidectmy (CWUM) and canal wall down mastoidectmy (CWDM). METHODS One hundred seventy one chronic suppurative otitis media (CSOM) patients were enrolled in this retrospective study. The patients who underwent the second staged ossiculoplasty at least 6 months after mastoidectomy and who had an intact...

Pease et al. introduced the problem of Byzantine Generals (BGP) to study the effects of Byzantine faults in distributed protocols for reliable broadcast. It is well known that BGP among n players tolerating up to t faults is (efficiently) possible if and only if n > 3t. To overcome this severe limitation, Pease et al. introduced a variant of BGP, Authenticated Byzantine General (ABG). Here play...

BACKGROUND Noninvasive positive pressure ventilation (NIPPV) has emerged as a significant advancement in the management of acute respiratory failure. OBJECTIVE To identify factors, based on clinical and laboratory parameters, for predicting the outcome of NIPPV in patients with acute respiratory failure. MATERIALS AND METHODS Fifty patients were included in the study. Inclusion criteria wer...

Finite element analysis (FEA) is increasingly used to investigate the brain under various pathological changes. Although FEA has been used to study hydrocephalus for decades, previous studies have primarily focused on ventriculomegaly. The present study aimed to investigate the pathologic changes regarding sulcal deformation in normal pressure hydrocephalus (NPH). Two finite element (FE) models...

UNLABELLED INTRODUCTION Alternative fusion expanders are in clinical use for instrumented posterolateral fusion (PLF) to avoid donor site morbidity in autologous bone graft (ABG) harvesting. Purpose of this study was to evaluate demineralized bone matrix (DBM) in PLF as alternative to the gold standard of ABG in acute traumatic vertebral body fractures of the thoracolumbar spine. MATERIAL AND M...

BACKGROUND Arterial blood gas (ABG) analysis is useful in evaluation of the clinical condition of critically ill patients; however, arterial puncture or insertion of an arterial catheter may cause many complications. The aim of this study was to determine whether venous blood gas (VBG) values can be used as an alternative to arterial blood gas measurements in patients under mechanical ventilati...

OBJECTIVES The aim of the present study was to evaluate the efficacy of autogenous bone graft (ABG) and nano-crystalline hydroxyapatite (Ostim) in the management of human intrabony periodontal defects. STUDY DESIGN Twenty-four similar two and three wall intrabony periodontal defects with ≥5 mm probing depths and ≥3 mm depths of intrabony component in 12 healthy patients were selected. One def...