Introduction Flow weighted gradient echo MRI techniques can be used for angiography. Furthermore, these techniques allow to visualise the ventilation of aquatic animals (1). Therefore using MRI, it should be possible to observe ventilation and blood flow in marine animals at the same time. Biochemical investigations led to the hypothesis that thermal tolerance is limited by insufficient oxygen ...

BACKGROUND Ineffective inspiratory triggering efforts are a major cause of poor patient-ventilator interactions during mechanical ventilation, but their routine identification requires the insertion of an esophageal catheter. OBJECTIVES We developed a mathematical analysis of ventilatory tracings recorded under noninvasive pressure ventilation in order to identify ineffective triggering effor...

Background and Objective: Tocilizumab is a monoclonal antibody against the Interleukin-6 (IL6) receptor, but its effect on improving the clinical condition of coronavirus disease of 2019 (COVID-19) patients is debated. Accordingly, this study investigated the impact of Tocilizumab as an alternative treatment on the outcomes of covid-19 patients. Methods: In this retrospective case-control stud...

Traditional management of neonatal respiratory failure has been accomplished with mechanical ventilation delivered by time-cycled, pressure-limited techniques. Although easy to use, this modality results in the delivery of tidal volumes that vary according to pulmonary compliance. In contrast, volume-targeted ventilation delivers a selected tidal volume at variable peak inspiratory pressure, re...

set ventilators. Objective: To define and characterize the transient re¬ sponse of VCO2 to a well-defined change in ventilation. Methods: Forty-four patients in stable condition re¬ ceiving volume-controlled mechanical ventilation had trend recordings of ventilator pressures, flow, volumes, Vco2, and end-tidal CO2 (ETCO2) for 20 min. At time t0, the minute ventilation was either increased (n=22...

When complete obstruction of an airway occurs, ventilation and gas exchange distal to the obstruction can be preserved if "collateral ventilation" exists. Three collateral pathways have been described: the interalveolar, the bronchioloalveolar and the interbronchiolar communications. The various techniques used to measure collateral flow, resistance, compliance and time constant are described, ...

INTRODUCTION Automatic ventilation for patients with respiratory failure aims at reducing mortality and can minimize the workload of clinical staff, offer standardized continuous care, and ultimately save the overall cost of therapy. We therefore developed a prototype for closed-loop ventilation using acute respiratory distress syndrome network (ARDSNet) protocol, called autoARDSNet. METHODS ...

Subcutaneous administration of aspartic acid results in a long-lasting but reversible depression of ventilation in male but not in female rats. Aspartic acid acts on N-methyl-D-aspartate receptors. The present study tested the hypothesis that a noncompetitive N-methyl-D-aspartate-receptor antagonist, dextromethorphan (Dex), would depress ventilation in female rats and stimulate it in male rats....

Design and operation of an extended hybrid ventilation system are fully investigated in this study through an example building. Tools of genetic algorithm optimization, computer fluid dynamics and energy simulation are employed to assist the process. The objective is to maximize natural ventilation while maintain good indoor thermal and air quality. The dynamic operation of vents is based on wi...