BACKGROUND Damage to the perineum is common after vaginal delivery, and it can be caused by laceration, episiotomy, or both. This study investigated the effects of maternal position (lateral vs lithotomy) and other variables on the occurrence of perineal damage. METHODS A retrospective study included the examination of hospital records from 557 women. The effects of demographic characteristic...

AIM To study the effect of positional change on inferior vena cava (IVC) diameter. The influence of positional change on IVC size is not well studied. Although the American Society of Echocardiography guidelines for chamber quantification recommend imaging the IVC in the left lateral position, many labs routinely image the IVC from the supine position. METHODS AND RESULTS Forty-three patients...

BACKGROUND The most common method of anesthesia for cesarean section is spinal anesthesia, and postdural puncture headache (PDPH) remains a major complication of this procedure. Nowadays, PDPH is a major cause of morbidity in parturients after spinal anesthesia. This headache is the third most popular reason for claims against anesthesiologists in obstetrics. The position after spinal anesthesi...

IT IS WELL DOCUMENTED THAT PATIENTS WITH OBSTRUCTIVE SLEEP APNEA (OSA) OFTEN HAVE MORE APNEA EVENTS IN THE SUPINE POSITION THAN IN THE LATERAL POSITION,15 and positional treatment is effective in these patients.6 The positional OSA patients are reported to be thinner and have less severe apnea than nonpositional patients.3 An anatomic study of upper airways in OSA patients revealed that positio...

This paper presents the development and simulation results of a computer simulation software for the lateral position control of a moving web in roll-to-roll (R2R) systems. Mathematical models of the web dynamics are described first to explain the lateral motion of a moving web. Based on the models, a controller that employs the PID control method is developed, and embedded in simulation softwa...

PURPOSE To determine by ultrasound which access and position the child must stay to obtain the best transversal section of the right Internal Jugular Vein (RIJV) allowing a safer puncture. METHODS Three possible accesses to the RIJV, anterior, lateral and posterior, from 57 healthy children, were analyzed through ultrasound images in a sequence of positions of the head, in supine position, wi...

We have measured dynamic lung compliance or static lung thorax compliance, functional residual capacity (FRC), and two indices of pulmonary gas mixing (pulmonary clearance delay (PCD) and single breath alveolar mixing efficiency (SBAME)) in 25 children in the supine and lateral decubitus position during nitrous oxide-halothane anaesthesia. Fifteen children (5 month-8 yr) breathed spontaneously ...

aim and background:   safe airway maintenance in patients under general anesthesia is the most important duty of anaesthesiologists. classic laryngeal mask airway (clma) is a supra-glottic device to achieve this aim. there are different insertion techniques for this device, but the best of them is unknown. methods and materials:   two hundred patients were included in this mono-blinded clinical...

system evaluations were performed on 48 center pivots in different parts of saudi arabia. these systems, located on different farms in four different regions of the country, namely: riyadh, jouf, qassim and eastern regions, were evaluated to study the effect of lateral configuration on water application uniformity as regards the original vs. modified laterals. lateral configuration modification...