INTRODUCTION Patients with superior oblique muscle palsy often assume a compensatory head tilt to the contralateral side of the affected eye. This tilt serves to decrease the hypertropia and, in theory, might decrease the excyclotropia. METHODS A prospective investigation was undertaken of the effect of forced head tilt to the right and left on torsion and the hypertropia in patients with uni...

The purpose of this study was to determine the relationship between the head position and the subsequent ease of nasotracheal intubation by using the lightwand device Trachlight (TL). Patients requiring nasotracheal intubation were subdivided into 3 groups according to the intubated head position (group S: sniffing position; group E: extension position; and group N: neutral position). The numbe...

OBJECTIVE Several recent intraventricular hemorrhage prevention bundles include midline head positioning to prevent potential disturbances in cerebral hemodynamics. We aimed to study the impact of head position change on regional cerebral saturations (SctO2) in preterm infants (< 30 weeks gestational age) during the first 3 days of life. STUDY DESIGN Bilateral SctO2 was measured by near-infra...

Effect of posture on the hypercapnic ventilatory response was studied on the anaesthetized rats by using rebreathing techniques in the supine and head-down positions. There were no statistically significant alterations in tidal volume, frequency, minute ventilation, and P(ET)CO(2)between the head-down and supine positions during breathing at rest. However, the esophageal pressure inspiratory sw...

Background and aim: Considering the widespread development of implants in dental treatment plans, linear measurements on panoramic radiography are of especial importance. In the present study we investigated the effect of head misalignment up to 15&deg; around vertical and horizontal axes on the magnification rate of digital panoramic radiography in each part of upper and lower jaws. Materia...

background: detection of women at risk for dystocia will allow physicians to make preparations and treatment decisions that can minimize maternal and neonatal morbidity. we aimed to determine the risk factors for dystocia in nulliparous women. methods: this case series enrolled 447 nulliparous women who presented with a single pregnancy in the vertex presentation and gestational age of 38-42 we...