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Low Energy Particle Accelerators and Laboratories
Published in Vlado Valković, Low Energy Particle Accelerator-Based Technologies and Their Applications, 2022
Another two containers arrived in the second week of June. One container was unloaded on top site, while the gas handling container was unpacked at the Sunbeam factory store. During this operation, the flywheel on the compressor was damaged and will need replacing. The console was shifted into the control room while the transformer and power distribution racks were positioned in the stand-by generator room. Finally, the two magnet halves were successfully positioned in the target room using the special frame.
Safe Patient Handling and Mobility
Published in Amy J. Litterini, Christopher M. Wilson, Physical Activity and Rehabilitation in Life-threatening Illness, 2021
Christopher M. Wilson, Amy J. Litterini
Utilizing a similar methodology of placing a device under a supine person in bed is the concept of air cushion lateral transfer devices. These devices are designed to be placed under the patient via the logroll technique and there is an attachable air compressor device. This device, when attached and activated, will inflate the air cushion underneath the patient and allow for a safe, efficient, low-effort in-bed repositioning (Figure 20.10). This is most frequently and efficiently applied during lateral slide transfers (e.g. sliding a person from a bed to a stretcher/gurney/recliner wheelchair). Instead of using a cloth draw sheet and three to four people for this lateral transfer, it can be safely done by two individuals with an overall decreased risk of injury.
Asphyxia
Published in Kevin L. Erskine, Erica J. Armstrong, Water-Related Death Investigation, 2021
Carbon monoxide is an odorless, colorless, tasteless, and nonirritating gas produced by the incomplete combustion of organic materials, thus emanating from cigarette smoke, cars, boat motors, house fires, charcoal grills, blocked chimneys, defective heating devices, and normally functioning generators operated in confined spaces. Low levels are generated in the body (in vivo) as a result of the breakdown of the component of hemoglobin called heme, or after exposure to methylene chloride contained in solvents, paint removers, and propellants.8,9 Rarely, carbon monoxide poisoning may result from contamination of scuba tanks filled by faulty oil-contaminated air compressors. The detrimental effect of CO gas underwater in scuba-related incidents is more severe and increases proportionately as the pressure on the body increases upon continued descent.10 Most deaths due to carbon monoxide poisoning are accidental, followed by suicidal and, rarely, homicidal. Importantly, individuals complaining of recurrent headaches, dizziness, flu-like symptoms, nausea, and lethargy may be experiencing chronic exposure from some source. There exist occasional news media reports of near deaths due to CO in homes that lacked CO detectors, contained defective furnaces or defective gas stoves, or improperly used indoor generators.
Effect of Wearing N95 Mask on the Quality of Chest Compressions in Prehospital Emergency Personnel: A Cross-over Study
Published in Prehospital Emergency Care, 2023
Liang Chen, Yang Shen, Shuangmei Liu, Yanyan Cao, Zhe Zhu
Wearing an N95 mask for chest compressions is a physical challenge for rescuers. Rescuers typically experience fatigue and a decrease in compression quality 1 min after the start of chest compressions (17). The AHA recommends that compressors be exchanged at least once every 2 min during CPR (21). Malysz et al. suggested changing the current 2-min replacement to 1 min to prevent a decrease in the quality of chest compressions due to PPE (22). AHA requires that the chest compression frequency should be greater than 100 bpm, the depth should be greater than 50 mm, and the chest should fully rebound after compression (21). The average compression frequencies of participants wearing N95 masks in 61-90 s and 91-120 s, and the average frequencies of participants wearing surgical masks in 91-120 s, were lower than 100 bpm. The average depth of participants wearing N95 masks at 61-90 s and 91-120 s, and the average depth of participants wearing surgical masks at 91-120 s, were all less than 50 mm. The full rebound of all participants in 91-120 s was less than 90%. This suggests that rescuers wearing N95 masks should perform chest compressions for shorter periods. To ensure high-quality chest compressions, we also recommend that the exchange time be reduced to no more than 1 min.
Evaluation of a semi-supervised self-adjustment fine-tuning procedure for hearing aids
Published in International Journal of Audiology, 2023
Jonathan Albert Gößwein, Jan Rennies, Rainer Huber, Tobias Bruns, Andrea Hildebrandt, Birger Kollmeier
We did not find any effect of sound scene on the preferred gain slope. In contrast, at least four studies found an effect of stimulus type on a preferred gain slope; however, whereas we used NAL-NL2 for the first fit, these studies used the revised linear prescriptive gain formula, NAL-RP (Byrne et al., 1990), and the original NAL (Byrne and Dillon, 1986). Using the original NAL, Keidser et al. (1995) found a negative correlation between the slope of the preferred real-ear response and the slope of the stimuli spectra. Using NAL-RP, Keidser et al. (2005) found a negative correlation between the preferred gain slope and the difference between the SNRs in the high and low-frequency bands separated by 1500 Hz. It is difficult to compare our study directly with these studies because the methods were so different. For one, the use of a multiband compressor in the current study could have compensated most of the effects observed in the four previous studies. In addition, the previous studies only examined gain slope and overall gain adjustments separately; while in the current study the two parameters were manipulated synchronously, and the noise spectra shape was not an independent variable as it was in the previous studies.
Care of children with home mechanical ventilation in the healthcare continuum
Published in Hospital Practice, 2021
Benjamin Kalm, Khanh Lai, Natalie Darro
In patients with poor respiratory strength, it is important to optimize airway clearance. Airway clearance techniques (ACTs) include postural drainage, percussion, chest wall vibration, and coughing. In children on HMV, recommended home equipment includes portable suctioning equipment, a heated humidifier, and a nebulizer/compressor [17]. Of note, many of our patients do not use nebulized medications and therefore do not have a nebulizer/compressor. A mechanical insufflation-exsufflation device (commonly called cough assist) may benefit children with HMV with ineffective cough, such as those with neuromuscular disease with respiratory muscle weakness. In children large enough for proper fitment, high-frequency chest wall oscillation is indicated for impaired clearance of secretions with impaired mobility. There is a lack of randomized controlled trials regarding choice of different ACT modalities in the pediatric HMV population.