Methods for preventing middle ear barotrauma in computer-controlled pressurization of monoplace hyperbaric chambers

2019 ◽  
pp. 107-116
Author(s):  
Layoung Hwang ◽  
Moon Song ◽  
Yoonsuk Lee ◽  
Tae Min Shin ◽  
Keyword(s):  
Automatic Control ◽  
Middle Ear ◽  
Evaluation System ◽  
Valsalva Maneuver ◽  
Control Group ◽  
Pressure Equalization ◽  
Target Pressure ◽  
Computer Controlled ◽  
Experimental Group ◽  
Hbo2 Therapy

Middle ear barotrauma (MEB), one of the side effects of hyperbaric oxygen (HBO2) therapy, sometimes cannot be directly diagnosed during the therapy itself. Instead, its incidence and degree are judged based on subjective statements made by patients when in conversation with medical staff regarding how they feel. To prevent MEB in practice it is proposed that the tympanic membrane evaluation system and automatic control chamber developed in a previous study be applied as part of a prevention algorithm [16]. The proposed algorithm, which determines and equalizes the unbalanced pressure of a subject based on their tympanic admittance, was evaluated in conjunction with conventional HBO2 therapy in an experiment involving 100 subjects. Among the 50 subjects in the control group who received HBO2 therapy 16 subjects experienced MEB. In contrast, the experimental group of 50 subjects were treated with a hyperbaric chamber protocol incorporating the automatic control system and proposed algorithm. At the conclusion of the treatment, no subjects exhibited middle ear barotrauma. In the case of the control group, while the target pressure was achieved, middle ear barotrauma still occurred. However, in the case of the experimental group, the pressure inside the chamber was adjusted as per the algorithm, which allowed the target pressure for every subject to be achieved without experiencing MEB. When a particular subject was unable to perform any pressure equalization method such as swallowing or the Valsalva maneuver, the chamber was not pressurized based on the tympanic admittance and thus no MEB occurred.

scholarly journals Wireless Network Access and Emotion Recognition of Online English Translation Teaching System from the Perspective of Artificial Intelligence

2022 ◽  
Vol 2022 ◽  
pp. 1-17
Author(s):  
Yonglan Li ◽  
Wen Shu
Keyword(s):  
English Translation ◽  
Questionnaire Survey ◽  
Evaluation System ◽  
Teacher Feedback ◽  
Control Group ◽  
Network Access ◽  
Current Feedback ◽  
Teaching Process ◽  
Automatic Feedback ◽  
Experimental Group

The research is aimed at verifying the application effect of the online automatic evaluation system in English translation teaching and at understanding the satisfaction of students with different feedback methods. The research uses three classes of human resource management majors in Xi’an Technological University as the research object and uses questionnaire survey and comparative experiment methods to compare and analyse the three feedback methods: teacher feedback, online automatic feedback, and teacher feedback combined with online automatic feedback. The research answers the following three questions: (1) will the three feedback methods affect students’ English translation performance? (2) Which of the three feedback methods will improve students’ English performance better? (3) What about students’ satisfaction with current feedback methods? The research results show that the significance value between the control group (CG) and the experimental group 1 (EG1) is 0.029, that between CG and the experimental group 2 (EG2) is 0.432, and that between EG1 and EG2 is 0.001. There are obvious differences in the posttest scores of the three groups of students. EG2 has the largest average posttest score, which is 9.8182; there is no obvious difference in posttest translation scores between CG and EG2. It indicates that “teacher feedback + online automatic feedback” and teacher feedback have the equivalent effect on improving students’ translation. The results of the questionnaire survey show that students have the highest degree of recognition of “teacher feedback + online automatic feedback.” The research is helpful for teachers to better understand the shortcomings in the translation teaching process, so that they can take effective measures against these problems in the follow-up teaching process to improve their teaching effect.

Auditory Brainstem Responses in Children with Early Recurrent Middle Ear Disease

1983 ◽  
Vol 92 (3) ◽  
pp. 249-253 ◽  
Author(s):  
Richard C. Folsom ◽  
Bruce A. Weber ◽  
Gary Thompson
Keyword(s):  
Middle Ear ◽  
Auditory Brainstem ◽  
Auditory Brainstem Responses ◽  
Control Group ◽  
Auditory Input ◽  
Sensation Level ◽  
History Of ◽  
Brainstem Function ◽  
Middle Ear Disease ◽  
Experimental Group

Auditory brainstem responses were recorded from an experimental group of 15 children with early histories of recurrent middle ear disease for the purpose of examining the effects of reduced auditory input on auditory brainstem function. The responses from these children were analyzed in terms of absolute latencies, interwave latencies and latency shifts across sensation level. Comparisons were made to a control group of children with no history of middle ear disease. Results indicated significant differences between the groups. The experimental group demonstrated greater absolute latencies for waves III and V as well as greater interwave latencies. These findings support the interpretation of an association between early recurrent middle ear disease and brainstem function.

The Effect of Tonsillectomy on Impedance Audiometry

1981 ◽  
Vol 89 (1) ◽  
pp. 20-26 ◽  
Author(s):  
G. Richard Holt ◽  
Thomas M. Watkins ◽  
Milton G. Yoder ◽  
Alicia Garcia
Keyword(s):  
Middle Ear ◽  
Lymphatic Drainage ◽  
Postoperative Recovery ◽  
Control Group ◽  
Significant Development ◽  
Impedance Audiometry ◽  
Acoustic Reflexes ◽  
Experimental Group

In an experimental group of 22 patients undergoing elective tonsillectomies and having normal preoperative middle ear function, there is a significant development of abnormal tympanogram types, loss of crossed acoustic reflexes, and decrease in middle ear compliance on the first postoperative day when compared to a control group. Postoperative recovery of middle ear function begins at one week and is usually completed by one month. The loss of acoustic reflexes occurs in those patients with extreme changes in compliance and abnormal tympanogram types. The authors postulate that these changes in middle ear function in the immediate posttonsillectomy period might be due to the surgical disturbance of the peritubal lymphatic drainage, causing engorgement of the tympanic and tubular mucosa; and to abnormal swallowing with impaired coordination of the nasopharyngeal and tubal musculature. These data are helpful in investigating the tonsillar effect on middle ear function and disease.

scholarly journals The Utility of Motor Evaluation in the Analysis of Effects of Motor Activities on Students

2017 ◽  
Vol 22 (3) ◽  
pp. 163-172
Author(s):  
Marcel Pomohaci ◽  
Ioan Sabin Sopa
Keyword(s):  
Evaluation System ◽  
Control Group ◽  
Final Test ◽  
Student Groups ◽  
Lower Member ◽  
Two Samples ◽  
Motor Activities ◽  
Motor Tests ◽  
Experimental Group ◽  
Relay Race

ABSTRACT This research aims to evaluate the effects of motor activities on pupils at primary education. The two samples of pupils were divided as follows: the first group, experimental group consisted of twenty-five students with the age between ten and twelve years old, thirteen boys and twelve girls, group which followed a specific program containing agonistic, playful and initiation training in sports games; and the second group, the control group, consisted of twenty-five students with the age between ten and twelve years old, fourteen boys and eleven girls, group that took the classical physical education and sports curriculum. The motor evaluation tests at which the students have been evaluated have been taken over from the national evaluation system: speed running on 50 m, 5x10 m relay race, resistance running, jumping, throw off the oina ball, abdominal force, back force, upper members force, and lower member force. The results showed that the pupils from the experimental group had better performances compared with those from the control group at the final test, indicating the effectiveness of the agonistic, playful and initiation programs in sports games. Differences in the final testing among student groups were significant in all motor tests (p <0.05). Conclusions have shown that the research hypothesis was valid, so we can say that inclusion of programs with agonistic, playful and initiation in sports games can influence in a good way the student’s motor performance at this age.

Morphometric analysis of peroxisomes in hepatocytes of alcohol-fed rats

1989 ◽  
Vol 47 ◽  
pp. 1100-1101
Author(s):  
D.C. Dominguez ◽  
J.T. Ellzey
Keyword(s):  
Caloric Intake ◽  
Volume Density ◽  
Controlled Study ◽  
Control Group ◽  
Numerical Density ◽  
Cacodylate Buffer ◽  
Paired Control ◽  
Experimental Group ◽  
Liver Peroxisomes ◽  
Single Lesion

Peroxisomes which participate in 1ipid metabolism have been shown to be altered in several metabolic disorders and toxic conditions. In alcoholic liver disease, the single lesion most frequently found is lipid accumu1ation in hepatocytes. However, the mechanisms for this 1ipid accumu1ation are not clear. The occurrence of modifications of liver peroxisomes due to excess alcohol consumption has not been subjected to a controlled study. We utilized a combination of cytochemica1 and morphometrictechniques to study the size and number of liver peroxisomes in rats fed an alcohol-supplemented diet compared to those of matched-paired control animals.Male Sprague-Daw1ey rats (400-500 g) received a liquid diet. The experimental group (N = 5/group) was fed a diet containing 30% ethanol-derived calories (EDC) and the control group was fed an isocaloric diet to 30% EDC. A pair feeding procedure was employed to control for caloric intake. Small pieces of liver randomly selected, were fixed in 2.3% -glutaraldehyde in 0.1 M sodium cacodylate buffer, pH 7.2, incubated in a DAB medium and postfixed with. 2% aqueous osmium tetroxide. EM photographs were taken from sections of 3 tissue blocks from each sample (7,200X) with a Zeiss EM10-A (60 kV). With the use of a point counting method and a digital planimeter the volume density (Vv) and numerical density (Nv) were determined.

Values and intergroup perceptions of East Germans and West Germans in 1998 1This research was supported by a grant from the German Research Society (We 1106/3-1).

1999 ◽  
Vol 58 (4) ◽  
pp. 263-272
Author(s):  
Jörg Doll ◽  
Michael Dick
Keyword(s):  
Research Society ◽  
Frame Of Reference ◽  
Control Group ◽  
Perceived Similarity ◽  
The West ◽  
Need For Uniqueness ◽  
German Research ◽  
East German ◽  
Experimental Group ◽  
East West

The studies reported here focus on similarities and dissimilarities between the terminal value hierarchies ( Rokeach, 1973 ) ascribed to different groups ( Schwartz & Struch, 1990 ). In Study 1, n = 65 East Germans and n = 110 West Germans mutually assess the respective ingroup and outgroup. In this intra-German comparison the West Germans, with a mean intraindividual correlation of rho = 0.609, perceive a significantly greater East-West similarity between the group-related value hierarchies than the East Germans, with a mean rho = 0.400. Study 2 gives East German subjects either a Swiss (n = 58) or Polish (n = 59) frame of reference in the comparison between the categories German and East German. Whereas the Swiss frame of reference should arouse a need for uniqueness, the Polish frame of reference should arouse a need for similarity. In accordance with expectations, the Swiss frame of reference significantly reduces the correlative similarity between German and East German from a mean rho = 0.703 in a control group (n = 59) to a mean rho = 0.518 in the experimental group. Contrary to expectations, the Polish frame of reference does not lead to an increase in perceived similarity (mean rho = 0.712).

Rorschach Characteristics in Adolescents with Systemic Lupus Erythematosus

2006 ◽  
Vol 28 (1) ◽  
pp. 100-118 ◽  
Author(s):  
J. Santoantonio ◽  
L. Yazigi ◽  
E. I. Sato
Keyword(s):  
Lupus Erythematosus ◽  
Case Control Study ◽  
Activity Index ◽  
Disease Activity Index ◽  
Female Adolescents ◽  
Control Group ◽  
Intelligence Scale ◽  
The Mean ◽  
Experimental Group ◽  
Control Study

The purpose of this study was to investigate the personality characteristics in adolescents with SLE. The research design is a case-control study by means of the Rorschach Method and the Wechsler Intelligence Scale. Study group: 30 female adolescents with lupus, 12–17 years of age. The SLE Disease Activity Index was administered during the period of psychological evaluation. Control group: 32 nonpatient adolescents were matched for age, sex, and socioeconomic level. In the Wechsler Intelligence Scale the mean IQ of the experimental group was significantly lower than that of the control group (77 and 98, respectively, p < .001). In the Rorschach, the lupus patients showed greater difficulty in interpersonal interactions, although they displayed the resources to process affect and to cope with stressful situations. A positive moderate correlation (p = .069) between the activity index of the disease and the affect constriction proportion of the Rorschach was observed: the higher the SLEDAI score, the lower the capacity to process affect. There is a negative correlation between the activity index of the disease and the IQ (p = .001): with a higher activity index of the disease, less intellectual resources are available.

In a Working Mood?

2008 ◽  
Vol 20 (1) ◽  
pp. 3-14 ◽  
Author(s):  
Leonard Reinecke ◽  
Sabine Trepte
Keyword(s):  
Cognitive Task ◽  
Prior Experience ◽  
Computer Game ◽  
Control Group ◽  
Mood Management ◽  
Management Processes ◽  
Quasi Experimental ◽  
Personal Media ◽  
Experimental Group ◽  
Subsequent Task

Abstract. This quasi-experimental study examined the effects of exposure to a computer game on arousal and subsequent task performance. After inducing a state of low arousal, participants were assigned to experimental or control conditions via self-selection. Members of the experimental group played a computer game for five minutes; subjects in the control group spent the same amount of time awaiting further instructions. Participants who were exposed to the computer game showed significantly higher levels of arousal and performed significantly better on a subsequent cognitive task. The pattern of results was not influenced by the participants' prior experience with the game. The findings indicate that mood-management processes associated with personal media use at the workplace go beyond the alteration of arousal and affect subsequent cognitive performance.

Impact of an educative program on dialysis patients’ knowledge and mental health: controlled before and after program

2018 ◽  
Vol 10 (2) ◽  
pp. 20204
Author(s):  
Laetitia Idier ◽  
Aurélie Untas ◽  
Nicole Rascle ◽  
Michèle Koleck ◽  
Maider Aguirrezabal ◽  
...  
Keyword(s):  
Mental Health ◽  
Depressive Symptoms ◽  
Vascular Access ◽  
Educational Program ◽  
Psychological State ◽  
Control Group ◽  
Dialysis Patients ◽  
Emotional Change ◽  
The Impact ◽  
Experimental Group

Introduction:Psychological impact of Therapeutic Patient Education (TPE) for dialysis patients is rarely evaluated since the focus of many studies is on medical variables (i.e., adherence).Objectives:The aims of this study were: 1) to estimate the impact of a TPE program on knowledge, depression and anxiety, 2) to examine change in knowledge as a mediator of the effects of a TPE program on mental health.Method:This study was conducted in three hemodialysis units and comprised two groups: an experimental group with education and a control group with routine care. The program was based of 5 educative sessions. Knowledge, depressive and anxious symptoms were assessed with self-reported outcomes measured before and 3 months after the program.Results:The sample comprised 125 patients. Knowledge about vascular access and nutrition (p < 0.01) and depressive symptoms increased in the experimental group (p < 0.01). Analysis of mediation showed that changes in knowledge about vascular access were a significant mediator of the effects of the program on depressive symptoms (F = 4.90;p = 0.01).Discussion:Knowledge acquired during an educational program could lead to an emotional change. Improving knowledge often leads to an awareness of the risks that can modify the psychological state of patients by reminding them of their vulnerability. This study shows that it is required to be attentive to the way of transmitting knowledge. It’s necessary adapting this transmission to the needs of patients and promoting the acquisition of psychosocial competence too.Conclusion:This study shows that knowledge acquired during an educational program can lead to an emotional change in the short term. A long-term follow-up of the population should be interesting to observe these emotional effects.

Соматические дисфункции у детей с задержкой речи

2017 ◽  
pp. 61-65
Author(s):  
E. L. Kuznetsova ◽  
L. A. Dultsev ◽  
E. V. Safin
Keyword(s):  
Standard Treatment ◽  
Control Group ◽  
Complex Therapy ◽  
Osteopathic Treatment ◽  
Positive Effect ◽  
Experimental Group

Goal of research - the study aims to examine the osteopathic profi le of children with dysarthria and to develop recommendations for osteopathic correction of somatic dysfunctions in 2-3 year old children presenting this pathology.Materials and methods. 30 2-3 year old children with the symptoms of dysarthria took part in the research. All the children were divided into 2 groups: the control group of 15 children received standard treatment, and the experimental group of 15 children received both standard and osteopathic treatment. The dysarthria severity and the osteopathic profi le were evaluated with account of the number of somatic dysfunctions at global, regional, and local levels.Results. The osteopathic correction was shown to have a positive effect on dysarthria severity. The study established a correlation between the dysarthria severity in children and the number of somatic dysfunctions at the local level.Conclusion. The study suggests using osteopathic correction of somatic dysfunctions in the complex therapy of dysarthria in children.

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