scholarly journals Tidal volume according to the 4-point sealing forces of a bag-valve-mask: an adult respiratory arrest simulator-based prospective, descriptive study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Dongchoon Uhm ◽  
Ajung Kim
Keyword(s):  
Regression Analysis ◽  
Tidal Volume ◽  
Simulation Study ◽  
Peak Pressure ◽  
Respiratory Arrest ◽  
Hierarchical Regression ◽  
Mask Ventilation ◽  
Hierarchical Regression Analysis ◽  
Adequate Ventilation ◽  
The One

Abstract Background For adequate ventilation during bag-valve-mask ventilation, rescuers should ensure a proper mask seal using the one-handed or two-handed technique. Little is known about the magnitude of sealing forces of a bag-valve-mask needed for adequate ventilation. This study aimed to explore the effect of the 4-point sealing forces of a bag-valve-mask on tidal volume while using the one-handed technique, focusing on the moderating effect of C length (the distance from the thumb to the index finger in the C shape of the one-hand EC grip). Methods A prospective, descriptive simulation study was conducted. A convenience sample of 125 undergraduate paramedic students from two universities was recruited. A self-reported questionnaire was used to collect subjective variables. Tidal volumes, 4-point sealing forces of the mask, peak pressure, and C length of the C shape in the one-hand EC grip were measured using the mechanical lung model under a simulated adult respiratory arrest. Hierarchical regression analysis was used to determine the moderating effect of C length on tidal volume in bag-valve-mask ventilation. Results The average C length, peak pressure, and tidal volume were 7.54 (± 1.85) cm, 11.62 (± 5.40) cmH2O, and 321.66 (± 135.18) mL, respectively. The average range of the 4-point sealing forces was 0.03–0.69 N. The apex sealing force was the weakest among the 4-point sealing forces. Hierarchical regression analysis demonstrated that tidal volume accounted for 62.7% of the variance by C length, peak pressure, and apex sealing force during bag-valve-mask ventilation (F = 9.676, p < 0.001). C length moderated the effect of the apex sealing force and peak pressure on the tidal volume, meaning the higher the peak pressure and apex sealing force, the more the tidal volume and the longer the C length. Conclusion This first simulation study measuring the 4-point sealing forces during bag-valve-mask ventilation provides effective advice that can be adopted in clinical practice without side effects and underpins the importance of continuous retraining and assessment focused on individual physical characteristics, such as C length and bag-valve-mask sealing forces.

scholarly journals Study on Tidal Volume According to the 4-Point Sealing Forces of Bag-Valve-Mask : An Adult Respiratory Arrest Simulator Based Prospective, Descriptive Study

2021 ◽  
Author(s):  
Dongchoon Uhm ◽  
Ajung Kim
Keyword(s):  
Regression Analysis ◽  
Tidal Volume ◽  
Simulation Study ◽  
Peak Pressure ◽  
Respiratory Arrest ◽  
Hierarchical Regression ◽  
Mask Ventilation ◽  
Hierarchical Regression Analysis ◽  
Adequate Ventilation ◽  
The One

Abstract Background For adequate ventilation during bag-valve-mask ventilation, rescuers should ensure a proper mask seal using the one-handed or two-handed technique. Little is known how much sealing forces of bag-valve-mask are needed for adequate ventilation. This study aimed to explored the effect of the 4-point sealing forces of a bag-valve-mask on tidal volume while using the one-handed technique, focusing on the moderating effect of C length ( C length is the distance from the thumb to index finger in the C shape of in the one-hand EC grip). Methods This was a prospective, descriptive simulation study design. Convenience sample of 125 undergraduate paramedic students from two universities was participated. A self-reported questionnaire was used to collect subject data. Tidal volumes, 4-point sealing forces of the mask, peak pressure, and C length of the C shape in the one-hand EC grip, were measured using the mechanical lung model under a simulated adult respiratory arrest. Hierarchical regression analysis was used to determine the moderating effect of C length on tidal volume in bag-valve-mask ventilation. Results The average C length, peak pressure and tidal volume were 7.54 (± 1.85) cm, 11.62 (± 5.40) cmH2O, and 321.66 (± 135.18) mL, respectively. The average range of the 4-point sealing forces were 0.03–0.69 newton. The apex sealing force was the weakest point among the 4-point sealing forces. Hierarchical regression analysis demonstrated that tidal volume accounted for 62.7% of the variance by C length, peak pressure, and apex sealing force during bag-valve-mask ventilation (F = 9.676, p < .001). C length moderated the effect of apex sealing force and peak pressure on tidal volume. That is, the more peak pressure and apex sealing force, the more the tidal volume, and the longer the C length, the more the tidal volume. Conclusion We developed effective advice that can be adopted in clinical practice without side effects as the first simulation study measuring the 4-point sealing forces during bag-valve-mask ventilation, as well as underpin continuous retraining and assessment that focus on individual physical characteristics, such as C length and bag-valve-mask sealing force.

Power, Conflict, and Effectiveness

2000 ◽  
Vol 5 (1) ◽  
pp. 28-33 ◽  
Author(s):  
M. Afzalur Rahim ◽  
David Antonioni ◽  
Krum Krumov ◽  
Snejana Ilieva
Keyword(s):  
United States ◽  
Regression Analysis ◽  
Interpersonal Conflict ◽  
The United States ◽  
Hierarchical Regression ◽  
Hierarchical Regression Analysis ◽  
Referent Power ◽  
Legitimate Power ◽  
Power Base ◽  
Effectiveness Data

This study investigated the relationships of bases of leader power (coercive, reward, legitimate, expert, and referent) and styles of handling interpersonal conflict (integrating, obliging, dominating, avoiding, and compromising) to subordinates' effectiveness. Data for this study were collected with questionnaires from the United States and Bulgaria and analyzed with hierarchical regression analysis for each country. Results indicated that in the United States referent power base of supervisors and integrating style of handling conflict of subordinates were positively associated with effectiveness. In Bulgaria, legitimate power base of supervisors was positively associated with effectiveness, but the subordinates' conflict styles were not associated with effectiveness.

scholarly journals Spotting Loneliness at School: Associations between Self-Reports and Teacher and Peer Nominations

2021 ◽  
Vol 18 (3) ◽  
pp. 971
Author(s):  
Flore Geukens ◽  
Marlies Maes ◽  
Antonius H. N. Cillessen ◽  
Hilde Colpin ◽  
Karla Van Leeuwen ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Children And Adolescents ◽  
Social Behaviors ◽  
Peer Status ◽  
Hierarchical Regression ◽  
Moderate Correlation ◽  
Hierarchical Regression Analysis ◽  
Teacher Nominations ◽  
Self Reports ◽  
Peer Nominations

In two independent studies, we aimed to examine the extent to which teacher and peer nominations of loneliness are associated with children’s and adolescents’ self-reported loneliness, respectively. Additionally, we examined whether loneliness nominations from teachers and peers were informative above and beyond peer status and social behaviors associated with loneliness. In Study 1 (N = 1594, Mage = 9.43 years), teacher nominations of loneliness showed a small to moderate correlation with children’s self-reported loneliness as assessed using the Loneliness and Social Dissatisfaction Questionnaire (LSDQ). The results of a hierarchical regression analysis showed that teacher nominations of loneliness predicted children’s self-reported loneliness above and beyond teacher nominations of peer status and social behaviors. In Study 2 (N = 350, Mage = 13.81 years), peer nominations of loneliness showed a small to moderate correlation with adolescents’ self-reported loneliness as assessed using the peer-related loneliness subscale of the Loneliness and Aloneness Scale for Children and Adolescents (LACA). The results of a hierarchical regression analysis showed that peer nominations of loneliness predicted adolescents’ self-reported loneliness above and beyond peer nominations of peer status and social behaviors. We conclude that loneliness nominations are valuable, but caution is needed when they are used exclusively to identify lonely children and adolescents.

Predictors of professional commitment for Chinese new generation cohorts in a sample of seafaring officers

2021 ◽  
pp. 1-17
Author(s):  
Xiaohui Jia
Keyword(s):  
Regression Analysis ◽  
Questionnaire Survey ◽  
Important Predictor ◽  
Professional Commitment ◽  
Hierarchical Regression ◽  
Dynamic Features ◽  
Hierarchical Regression Analysis ◽  
Generation Cohorts ◽  
New Generation

Abstract This study aims to examine the predictors of professional commitment of the Chinese new generation, divided into post-80s and post-90s cohorts. A questionnaire survey was employed to collect data from Chinese seafaring officers of these cohorts. The results through hierarchical regression analysis present the two cohorts as having both similar and different predictors. The main difference is that company management and policies positively drive the post-80s cohort to work at sea but not the post-90s. The main similarity is that the work itself is the most important predictor for both cohorts. This study contributes to helping maritime companies to estimate the possibility of Chinese new generation officers quitting sea jobs and can be of value to both managers and authorities as they seek to comprehend the generational dynamic features to better cope with the problem of shortage of younger qualified officers.

Interval Identification Predicts Success in Melodic Dictation

2021 ◽  
pp. 002242942110119
Author(s):  
Bryan E. Nichols ◽  
D. Gregory Springer
Keyword(s):  
Regression Analysis ◽  
Demographic Variables ◽  
Hierarchical Regression ◽  
Musical Experience ◽  
Two Stage ◽  
Hierarchical Regression Analysis ◽  
Melodic Dictation ◽  
Identification Test ◽  
Predictive Relationships

The purpose of this study was to investigate possible predictive relationships between interval identification and melodic dictation performance on tasks where students identify short pitch spans after a brief tonicization. College musicians ( N = 35) completed an interval identification test and a series of melodic dictation tasks. Results indicated that interval identification and melodic dictation tests reflected a battery of items ranging from very easy to very difficult with acceptable Cronbach’s α levels. We conducted a two-stage hierarchical regression analysis to examine the extent to which interval identification served as a predictor of melodic dictation accuracy while controlling for selected music and demographic variables. Results indicated that interval identification served as a significant predictor of melodic dictation scores, contributing 28.9% of the variance in melodic dictation scores while controlling for musical experience variables. The analysis indicated a dictation task by interval ability interaction based on grouping by lower, mid-, and upper performing groups on the interval identification test. Issues in measurement of melodic dictation accuracy and strategies that affect the development of melodic dictation skills are discussed.

The Relationships among Perceived Stress, Athletic Burnout and Leisure Participation for the Badminton Player

2017 ◽  
Vol 2 (4) ◽  
pp. 07-12
Author(s):  
Chih-Wei Lin ◽  
Ching-Chi Wu ◽  
Jen-Wei Chen ◽  
Bo-Hao Lai ◽  
Su-Shiang Lee ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Perceived Stress ◽  
Questionnaire Survey ◽  
Jel Classification ◽  
Hierarchical Regression ◽  
Research Subjects ◽  
Hierarchical Regression Analysis ◽  
Study Results ◽  
Convenience Sampling ◽  
National Ranking

Objective - This study examines the relationship between perceived stress, athletic burnout and leisure amongst badminton players. Methodology/Technique - The research subjects were all first national ranking tournament badminton players in 2012. The study uses convenience sampling to conduct a questionnaire survey. 350 questionnaires were distrubuted, with 288 valid questionnaires being returned (male 195, female 93). The rate of effectiveness was 82%. All of the data collected was analyzed using descriptive statistic and hierarchical regression analysis. Findings – The research subjects were all first national ranking tournament badminton players in 2012. The study uses convenience sampling to conduct a questionnaire survey. 350 questionnaires were distrubuted, with 288 valid questionnaires being returned (male 195, female 93). The rate of effectiveness was 82%. All of the data collected was analyzed using descriptive statistic and hierarchical regression analysis. Novelty – The study highlights that badminton players who participate in leisure-based activities are able to effectively adjust their perception of pressure to a "reduced sense of accomplishment" which has an effect on athletic burnout. Additionally, the study results give rise to variety of proposed solutions or suggestions for dealing with burnout or stress. Type of Paper - Empirical Keywords: Hierarchical Regression Analysis; Sources of Stress; Leisure; Badminton Players. JEL Classification: M10, Z20.

scholarly journals The Relationship between Mental Health, Educational Burnout and Strategies for Coping with Stress among Students. A Cross-Sectional Study of Poland

2021 ◽  
Author(s):  
Piotr Długosz
Keyword(s):  
Mental Health ◽  
Risk Factors ◽  
Regression Analysis ◽  
Coping Strategies ◽  
Satisfaction With Life ◽  
Mental Health Disorders ◽  
Hierarchical Regression ◽  
Coping With Stress ◽  
Hierarchical Regression Analysis ◽  
Health Disorders

Objective The study aims to investigate the risk factors of bad psychosomatic health among students in quarantine during the first wave of the COVID-19 pandemic. Method:The survey was conducted on-line, on a sample of 1,978 respondents in Poland. The study was carried out by the end of the summer semester. The questionnaire was designed in a way which allows for the observation of main risk factors which have impact on the students&rsquo; mental health. The variance analysis and the hierarchical regression analysis were used to determine the predictors of mental health. Results:The results indicate that average and high levels of psychosomatic disorders were observed among 61% of respondents. The hierarchical regression analysis has revealed that the main factors influencing the level of mental health disorders were educational burnout, satisfaction with life, strategies for coping with stress and gender. As indicated by the respondents, mental health disorders increase in tandem with educational burnout, the application of emotion-focused coping strategies and the lack of satisfaction with one&rsquo;s life. Moreover, it was observed that female respondents scored higher on the scale of disorders in comparison to males. Conclusions:The results of research indicate that distance education and negative coping strategies are the main risk factors of mental health disorders among students during the pandemic.

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