[Nursing approaches to improve extracorporeal membrane oxygenation (ECMO) care in a pediatric intensive care unit].

BACKGROUND: Medical technology advances have led to the increasingly frequent use of extracorporeal membrane oxygenation (ECMO) in intensive care unit applications. Four of the 26 patients treated using ECMO in 2009 at our hospital were under 18 years of age. Limited nurse experience with ECMO and resultant nursing staff nervousness / pressure when using this technique encouraged us to establish an ad hoc group to explore ECMO care and related issues. PURPOSE: Improvement measures were implemented to (1) raise the pre- ECMO placement integrity of order sheets to 98%; (2) reduce materials preparation time to below 60 minutes; and (3) enhance nursing care ECMO cognitive accuracy to 99%. RESOLUTION: We implemented the following intervention measures: (1) A dedicated ECMO vehicle was deployed to enhance clinical work convenience and safety; (2) a ECMO technique preparation checklist was developed to improve tubing placement and reduce preparation time; (3) an ECMO care in-service education program was developed to enhance nurses' ECMO care awareness and skills; (4) an ECMO trainee system was established to increase nurses ECMO care experience and reduce negligence-related errors. RESULTS: Project results included: material preparation order sheet accuracy rose from 25% to 100%; average materials preparation time fell from 90 to 40 minutes, and nursing staff ECMO cognitive accuracy increased from 51.2% to 99.2%. The program achieved all stated objectives. CONCLUSIONS: This program enhanced the quality of ECMO care for pediatric patients, reduced materials preparation times, and improved the nursing approach to ECMO care.

Effects of High-Frequency Chest Wall Oscillation on Acute Exacerbation of Chronic Obstructive Pulmonary Disease: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

Purpose: This study aimed to evaluate the efficacy of high-frequency chest wall oscillation for sputum expectoration and hospital length of stay in patients with acute exacerbations of chronic obstructive pulmonary disease. The improvements in pulmonary function and oxygenation were also investigated. Patients and Methods: This systematic review and meta-analysis followed the Preferred Reporting Items for Systematic Review and Meta-analyses (PRISMA) guidelines. Automated literature database searches were conducted from the earliest records to March 31, 2022. The methodological quality of the included studies was assessed using the Cochrane Risk of Bias tool (RoB 2.0), and meta-analysis software (RevMan 5.4) was used to analyze the data. Results: From 5439 identified articles, 13 studies (with 756 patients) were included in this meta-analysis. Compared to other airway clearance techniques, HFCWO significantly increased expectorated sputum volume by 6.18 mL (95% CI: 1.71 to 10.64; I2 = 87%), shortened hospital stay by 4.37 days (95% CI: -7.70 to -1.05; I2 = 84%). However, FEV1 (%), PaO2, and PaCO2 did not improve significantly. Conclusion: AECOPD patients may benefit from HFCWO therapy. HFCWO enables AECOPD patients to excrete more sputum and shorten their hospital stays. However, due to heterogeneity among the included research, these results should be interpreted with caution.

In Vivo Evaluation of the Effects of Sintering Temperature on the Optical Properties of Dental Glass-Ceramics.

In prosthodontics, the ability of glass-ceramics to express the optical properties of natural teeth is an important goal of esthetic restorations. Dental restorations do not merely need to be similar in color to natural teeth; proper optical properties, such as opalescence, transparency, etc., must be combined in order to achieve excellent esthetic effects. The optical properties of ceramic materials are mainly distinguished by different hues (e.g., A, B, C, and D) combined with translucency (e.g., high translucency (HT), medium translucency (MT), low translucency (LT), and medium opacity (MO)). However, there are many varieties of tooth color. Therefore, it is expected that glass-ceramics can change their nanocrystal size and porosity through different heat-treatment temperatures and times and, thereby, present different transparency effects. This study mainly analyzed the influence of changes in sintering temperature on the optical properties of glass-ceramics. The optical properties of glass-ceramics in the oral cavity were evaluated with human trials. We hypothesized that (1) the transparency of glass-ceramics can be changed by controlling the sintering temperature and (2) glass-ceramics modified by the sintering temperature can be suitable for clinical applications. Results showed that the transparency decreased, the nanoparticle size increased, the crystallinity increased, and the surface hardness decreased as the sintering temperature increased. High-brightness glass-ceramics have more-sensitive optical properties. Results of clinical trials showed that glass-ceramics whose transparency was changed by controlling the sintering temperature can be candidates for clinical applications. Based on the above results, the hypotheses of this study were supported. In the future, we will continue to explore the esthetic field of dental restorations.

PID tuning rules for SOPDT systems: review and some new results.

PID controllers are widely used in industries and so many tuning rules have been proposed over the past 50 years that users are often lost in the jungle of tuning formulas. Moreover, unlike PI control, different control laws and structures of implementation further complicate the use of the PID controller. In this work, five different tuning rules are taken for study to control second-order plus dead time systems with wide ranges of damping coefficients and dead time to time constant ratios (D/tau). Four of them are based on IMC design with different types of approximations on dead time and the other on desired closed-loop specifications (i.e., specified forward transfer function). The method of handling dead time in the IMC type of design is important especially for systems with large D/tau ratios. A systematic approach was followed to evaluate the performance of controllers. The regions of applicability of suitable tuning rules are highlighted and recommendations are also given. It turns out that IMC designed with the Maclaurin series expansion type PID is a better choice for both set point and load changes for systems with D/tau greater than 1. For systems with D/tau less than 1, the desired closed-loop specification approach is favored.

Near-infrared light device can improve intravenous cannulation in critically ill children.

BACKGROUND: Vascular access in critically ill children can be a real challenge for medical staff. METHODS: To evaluate the effectiveness of a near-infrared light vein-viewing device for critically ill children, 60 pediatric inpatients were enrolled in a randomized prospective observation trial for intravenous cannulation. The patients' demographic data, mean time required to find the first available vessel, first-attempt success rate, mean number of attempts per patient, and the total time taken on the attempts per patient were compared. RESULTS: Less time was required to find the first available vessel in the near-infrared light device group compared with the control group (126.37 vs. 383.61 seconds; p = 0.027). In addition, the near-infrared light device group had a fewer number of attempts compared with the control group (median 1 vs. 2; p = 0.004), and also a shorter total time of attempts per patient compared with the control group (186.16 vs. 497.23 seconds; p = 0.014). CONCLUSION: The use of a near-infrared light vein-viewing device for vascular access in critically ill children can decrease the total medical time and cost.