The sitting beach-chair position is regularly used for shoulder surgery and anesthesia may be induced in that position. We tested the hypothesis that the cardiovascular challenge induced by induction of anesthesia is attenuated if the patient is placed in a reclining beach-chair position. Anesthesia was induced with propofol in the sitting beach-chair (n = 15) or with the beach-chair tilted bac...

We study the modelling of the subjective sensation of discomfort for subjects seated during a long time, in terms of local discomforts. The methodology uses fuzzy measures and integrals in a multicriteria decision making perspective, which enables the modelling of complex interaction between variables. Results of the experiment are detailed, giving models with respect to different kinds of disc...

Percutaneous renal biopsy is now accepted as a useful diagnostic tool, with wvell-defined indications, risks, and limitations. Most commonly employed is the technique described by Kark and Muehrcke (1954) in which the patient lies prone across a sandbag throughout the procedure, so that the kidney is "fixed " against the posterior parietes and is therefore more easily entered by the biopsy need...

Purpose: The present study aimed to compare Musculoskeletal Discomforts (MSDs) among six different common postures while working with laptop in female students of University of Tehran, Tehran City, Iran. Methods: This was a crossover trial study. Eighteen female students voluntarily and purposefully participated in all stages of the study. The study participants were randomly assigned into gro...

BACKGROUND It is well known that upper airway resistance increases with postural change from a sitting to supine position in patients with obstructive sleep apnoea (OSA). It is not known, however, how the postural change affects the ventilatory and occlusion pressure response to hypercapnia in patients with OSA when awake. METHODS The responses of minute ventilation (VE) and mouth pressure 0....

aims: the installation of intravenous catheter is an unpleasant and painful experience for many patients. then, it is necessary to provide new methods to either reduce or remove pain in the patients’ injection point. the aim of this study was to investigate the effects of positioning (either sitting or lying) during the installation of intravenous catheter on pain level and the following anxiet...