Background-Volume loading is commonly used to adjust preload and optimise cardiac output. It is difficult to monitor preload at the bedside because filling affects ventricular diastolic function and consequently end diastolic pressure, which is the variable used to monitor preload. Objective-To assess the effects of gradual volume loading on the different components of left ventricular diastoli...

BACKGROUND Volume loading is commonly used to adjust preload and optimise cardiac output. It is difficult to monitor preload at the bedside because filling affects ventricular diastolic function and consequently end diastolic pressure, which is the variable used to monitor preload. OBJECTIVE To assess the effects of gradual volume loading on the different components of left ventricular diasto...

BACKGROUND A large percentage of evidence concerning dental interventions is based on laboratory research. The apparent wealth of laboratory evidence is sometimes used as basis for clinical inference and recommendations for daily dental practice. In this study two null-hypotheses are tested: whether trial results from laboratory and controlled clinical trials concerning the comparison of high-v...

BACKGROUND Diastolic strain rate (SR) measurements that comprise all left ventricular (LV) segments are advantageous over myocardial velocity for assessment of diastolic function. Mitral early diastolic velocity (E)/SR ratio during the isovolumetric relaxation (IVR) period can be used to estimate LV filling pressures. METHODS AND RESULTS Simultaneous echocardiographic imaging and LV pressure ...

Vessel groundings cause severe, persistent gaps in seagrass beds. Varying degrees of natural recovery have been observed for grounding injuries, limiting recovery prediction capabilities, and therefore, management's ability to focus restoration efforts where natural recovery is unlikely. To improve our capacity for predicting seagrass injury recovery, we used an information-theoretic approach t...

The variation of the energy spectrum of n±i±p±i crystals under excitation was examined and the influence of the reduction of the screening length on the ratio between the coefficient of diffusion and the mobility of the current carriers was established. It is shown that the filling of subband states by carriers results in an anomalous behaviour of the diffusivity±mobility ratio. The effect occu...

introduction: the aim of this study was to evaluate the apical and coronal sealing of endodontic fillings promoted by the associations of sealer 26/gutta-percha, endofill/gutta-percha and resilon/ epiphany. materials and methods: it was used 38 human canines, 10 teeth for each test group and 4 teeth for each control group. after teeth conventional endodontic treatment, they were immersed in sal...

OBJECTIVES It is largely unknown why extravascular lung water may increase during fluid loading in the critically ill with presumed hypovolemia. In this study we evaluated the hemodynamic predictors of such an increase. DESIGN A prospective observational study. PATIENTS Sixty-three presumed hypovolemic mechanically ventilated patients (22 septic and 41 nonseptic patients). INTERVENTION Fl...

BACKGROUND AND PURPOSE Vertebroplasty has been commonly used for the treatment of vertebral compression fractures. Practitioners usually attempt to maximize filling of the vertebral body with polymethylmethacrylate (PMMA), either by using a bipediculate approach with separate infusions in both hemivertebrae or by using a unipediculate approach with central needle placement that allows bilateral...