OBJECTIVE To assess the ability of a decremental trial of positive end-expiratory pressure (PEEP) to identify an optimal PEEP level that maintains oxygenation after a lung-recruitment maneuver. DESIGN Prospective clinical trial. SETTING Surgical intensive care unit of a university hospital. PATIENTS Twenty sedated patients with acute lung injury and/or acute respiratory distress syndrome,...

OBJECTIVE The number of bypasses is the most important factor in lymphaticovenular anastomosis (LVA) for lymphedema treatment. Side-to-end (S-E) LVA, which can bypass bidirectional lymph flows via one anastomosis, is considered to be the most efficient bypass, but creation of lateral window to a small lymphatic vessel is technically demanding. To overcome the difficulty, we introduced S-E anast...

Class C physiologic incident reports during undergraduate pilot training (UPT) revealed that 1.7 episodes of G-induced loss of consciousness (LOC) occurred monthly in 1980-1984. The mean +Gz for the LOC episodes was +3.8 Gz; the minimum, +2.0 Gz. The mean time of total incapacitation was 12.0 s (maximum, 180.0 s) as subjectively estimated by the aircrew. Improper performance of the anti-G strai...

background during the four steps of the valsalva maneuver (vm), opposite changes can be observed in some physiologic parameters. manifestations of the vm in the electrocardiogram (ecg) have been studied in detail, but there have been few reports comparing vm-related biochemical and hemodynamic changes with a focus on the strain phase of the vm. objectives we studied strain-related ecg changes d...

Experienced drivers performed simple steering maneuvers in the absence of continuous visual input. Experiments conducted in a driving simulator assessed drivers' performance of lane corrections during brief visual occlusion and examined the visual cues that guide steering. The dependence of steering behavior on heading, speed, and lateral position at the start of the maneuver was measured. Driv...

In this paper we present a mobile robotic platform designed for experimental analysis of the robot control during sliding at high velocity. We use the developed platform for experimental analysis of the mobile robot performing aggressive 90 degrees steering maneuver at high speed (about 8 m/s) on the highly slippery surface (Coulomb friction coefficient about 0.4). The maneuver is performed in ...

background :although  laparoscopic   cholecystectomy  is   associated  with  less   post-operative  pain compared  to   open  cholecystectomy,  diffuse  shoulder  and  abdominal  pain  is   one    of   the    main postoperative complications in  this technique. the  aim  of this study was  to  compare the  abdominal and shoulder pain after laparoscopic cholecystectomy by  applying intra-abdomin...

Not uncommonly, when cerebral angiography is performed via the femoral route , a long flexible-tip guide wire may be introduced into the appropriate vessel , but because of tortuosity of the carotid artery the catheter does not follow the guide wire. During attempts to maneuver the catheter into the carotid artery, the catheter and guide wire are displaced into the aortic arch . To overcome thi...