Application and Satisfaction Analysis of Humanized Quality Nursing Intervention in the Care of Patients with Critical Respiratory Failure

Objective:To implement humanized quality care in critical respiratory failure nursing,observe the effect,and analyze the satisfaction.Methods:80 patients with severe respiratory failure were divided into 40 cases per group(admitted from February 2022 to December 2023)by double-blind method,the control group performed routine care,and the observation group was given humanized quality care.Results:After the nursing care,two respiratory function indexes of the observation group were lower than those of the control group,and two pulmonary function indexes were higher than those of the control group(P<0.05);regarding the complication situation,the incidence rate of the observation group was lower(P<0.05);regarding the nursing care satisfaction situation,the observation group had a higher level of total satisfaction(P<0.05).Conclusion:The application of a humanized quality nursing intervention model in the care of critical respiratory failure can actively improve patients’respiratory status and lung function,reduce complications,and satisfy patients.

Critical respiratory failure due to pregnancy complicated by COVID-19 and bacterial coinfection:A case report

BACKGROUND In the past 3 years,the global pandemic of coronavirus disease 2019(COVID-19)has posed a great threat to human life and safety.Among the causes of death in COVID-19 patients,combined or secondary bacterial infection is an important factor.As a special group,pregnant women experience varying degrees of change in their immune status,cardiopulmonary function,and anatomical structure during pregnancy,which puts them at higher risk of contracting COVID-19.COVID-19 infection during pregnancy is associated with increased adverse events such as hospitalisation,admission to the intensive care unit,and mechanical ventilation.Therefore,pregnancy combined with coinfection of COVID-19 and bacteria often leads to critical respiratory failure,posing severe challenges in the diagnosis and treatment process.CASE SUMMARY We report a case of COVID-19 complicated with Staphylococcus aureus(S.aureus)coinfection in a pre-gnant woman at 34 wk of gestation.Her rapid progression of pulmonary lesions caused severe respiratory failure,and she received noninvasive ventilator-assisted respiratory treatment.Subsequently,we delivered a foetus via emergency caesarean section after accelerating the maturity of the foetal pulmonary system,and the respiratory condition of the puerperant woman significantly improved after the delivery of the foetus.Lavage fluid was taken under tracheoscopy to quickly search for pathogens by the metagenomic nextgeneration sequencing(mNGS),and both COVID-19 and S.aureus were detected.After targeted anti-infective treatment,the maternal condition gradually improved,and the patient was discharged from the hospital.CONCLUSION The coinfection of pregnancy with COVID-19 and bacteria often leads to critical respiratory failure,which is a great challenge in the process of diagnosis and treatment.It is crucial to choose the right time to deliver the foetus and to quickly find pathogens by mNGS.

Failure Mode Effects and Criticality Analysis Method of Armored Equipment Based on Testability Growth

In view of the low level testability of armored equipment,the important significance of armored equipment testability growth is discussed in this paper.The failure mode effects and criticality analysis( FMECA) method to realize testability growth is introduced.Centering on the testability growth demands of new armored equipment,the deficiencies of traditional FMECA are analyzed.And an enhanced FMECA( EFMECA) method is proposed.The method increases the analysis contents,combines the information before the failure occurrence and impending failure modes together organically.Then the failure symptoms is analyzed,the failure modes and effects is determined,and the state development trend is predicted.Finally,the application of EFMECA method is illustrated by the example of the failure mode of typical armored equipment engine.

Failure Modes of Machining Center in Test Run

To analysis the early failures of machining centers,the failure mode effect and criticality analysis( FMECA) method was used. Based on the failure data collected from production lines in test run,all the failure modes of machining centers were summarized and criticality of all subsystems is figured out. And the process of FMECA was improved. The most critical subsystem was manipulator subsystem. The most critical failure mode was impacted manipulator. Reasons and effect of some important failure modes were analyzed. And some suggestions to solve failures were given.

The temperature-dependent fracture strength model for ultra-high temperature ceramics

Breaking down the entire structure of a material implies severing all the bonds between its atoms either by applying work or by heat transfer. Because bond-breaking is indifferent to either means, there is a kind of equivalence between heat energy and strain energy. Based on this equivalence, we assume the existence of a constant maximum storage of energy that includes both the strain energy and the corresponding equivalent heat energy. A temperaturedependent fracture strength model is then developed for ultrahigh temperature ceramics （UHTCs）. Model predictions for UHTCs, HfB2, TiC and ZrB2, are presented and compared with the experimental results. These predictions are found to be largely consistent with experimental results.

船用柴油机辅助系统关键故障人因失误概率评估

Human error,an important factor,may lead to serious results in various operational fields.The human factor plays a critical role in the risks and hazards of the maritime industry.A ship can achieve safe navigation when all operations in the engine room are conducted vigilantly.This paper presents a systematic evaluation of 20 failures in auxiliary systems of marine diesel engines that may be caused by human error.The Cognitive Reliability Error Analysis Method(CREAM)is used to determine the potentiality of human errors in the failures implied thanks to the answers of experts.Using this method,the probabilities of human error on failures were evaluated and the critical ones were emphasized.The measures to be taken for these results will make significant contributions not only to the seafarers but also to the ship owners.

Weakness Ranking Method for Subsystems of Heavy-Duty Machine Tools Based on FMECA Information

Heavy-duty machine tools are composed of many subsystems with different functions,and their reliability is governed by the reliabilities of these subsystems.It is important to rank the weaknesses of subsystems and identify the weakest subsystem to optimize products and improve their reliabilities.However,traditional ranking methods based on failure mode effect and critical analysis(FMECA)does not consider the complex maintenance of products.Herein,a weakness ranking method for the subsystems of heavy-duty machine tools is proposed based on generalized FMECA information.In this method,eight reliability indexes,including maintainability and maintenance cost,are considered in the generalized FMECA information.Subsequently,the cognition best worst method is used to calculate the weight of each screened index,and the weaknesses of the subsystems are ranked using a technique for order preference by similarity to an ideal solution.Finally,based on the failure data collected from certain domestic heavy-duty horizontal lathes,the weakness ranking result of the subsystems is obtained to verify the effectiveness of the proposed method.An improved weakness ranking method that can comprehensively analyze and identify weak subsystems is proposed herein for designing and improving the reliability of complex electromechanical products.

Reliability Analysis of Unmanned Aerial Vehicles Flight Control System Based on Reliability Analysis Technologies

The unmanned aerial vehicles( UAV) has been becoming more and more important in the aviation industry.Despite the superior performance and advanced technology,major accident of UAV happens frequently due to the impact of their systems,long distance of remote control and skill of manipulator technology.According to the application of engineering application,failure mode effects and criticality analysis( FMECA),failure reporting analysis and corrective action comprehensive analysis systems( FRACAS)and fault tree analysis( FTA)( 3 F) were combined.And also a set of user-friendly,more time,more efficient and accurate reliability analysis system were explored.