BACKGROUND Changes in cardiac power parameters incorporate changes in both aortic flow and blood pressure. We hypothesized that dynamic and non-dynamic cardiac power parameters would track hypovolemia better than equivalent flow- and pressure parameters, both during spontaneous breathing and non-invasive positive pressure ventilation (NPPV). METHODS Fourteen healthy volunteers underwent lower...

Modern spirometry, like no other monitoring technique, allows insight into breath-to-breath respiratory mechanics. Spirometers continuously measure volume, airway pressure, and flow while calculating and continuously displaying respiratory system compliance and resistance in the form of loops. The aim of this case series is to show how observation of spirometric loops, similar to electrocardiog...

Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease in which most patients die of respiratory failure. Although volume-targeted non-invasive bilevel positive airway pressure (BPAP) ventilation has been studied in patients with chronic respiratory failure of various etiologies, its use in ALS has not been reported. We present the case of a 66-year-old woman with ALS an...

Background. The use of echocardiography in intensive care settings impacts decision making. A prerequisite for the use of echocardiography is relative resistance to changes in volume status and levels of positive pressure ventilation (PPV). Studies on indices of diastolic function report conflicting results with regard to dependence on volume status. Evidence is scarce on PPV. Methods. Ten heal...

OBJECTIVE To provide stable anaesthesia of long duration in broiler chickens in order to perform a terminal caecal ligated loop procedure. STUDY DESIGN Prospective experimental study. ANIMALS Seven clinically healthy broiler chickens (Gallus domesticus) aged 27-36 days, weighing 884-2000 g. METHODS Anaesthesia was induced and maintained with isoflurane in oxygen. All birds underwent inter...

e letter by Yetim et al. discussed mechanical ventiion modes and parameters to prevent hypoxemia and prove lung function during robotic surgery, using Recruitnt Maneuvers (RMs), positive pressure ventilation mode, d Positive End-Expiratory Pressure (PEEP).1 We agree that pressure control ventilation is an option d PEEP and RMs may be needed during robotic surgery. wever, some studies have repor...

Salicylic acid (SA) inhibited germination of cocklebur (Xanthium pennsylvanicum Wlr), lower seeds, which are completely after-ripened and nondormant. SA also inhibited ethylene production during a pre-germination period of the seeds. Exogenous ethylene overcame the inhibtion of the seed germination by SA. Moreover, SA reduced respiration in pre-germinating whole seeds as well as excised axial...

In this paper, a method is proposed to measure the human respiration rate using mattress sensor. An unsupervised clustering method, combined with cluster selection algorithm, was used rate. The volume change of upper body during breathing process indicated by pressure on sensor and waveform estimated measuring change. measured changes were separated into respiratory-related clusters noise metho...

Histamine was administered to dogs by the intravenous route near the right atrium in doses of 9.6 to 19 y/Kg. body weight. It produced a severe drop in systemic blood pressure, negligible changes in heart rate and respiration, usually a fall in cardiac output and no change in left atrial or pulmonary artery wedge pressure. The pulmonary artery pressure showed an initial rise and then a fall fol...

Dynamic preload assessment tests, especially pulse pressure variation (PPV) and stroke volume variation (SVV), are increasingly acknowledged in mechanically ventilated patients as being predictors of fluid responsiveness. However, the limitations of this method are often neglected or overlooked. One of the prerequisites for PPV and SVV evaluation, in addition to intermittent positive pressure v...